In the figure, a horse pulls a barge along a canal by means of a rope. The force on the barge from the rope has a magnitude of 7890 N and is at the angle θ = 13° from the barge's motion, which is in the positive direction of an x axis extending along the canal. The mass of the barge is 9500 kg, and the magnitude of its acceleration is 0. 12 m/s2. What are (a) the magnitude and (b) the direction (measured from the positive direction of the x axis) of the force on the barge from the water? Give your answer for (b) in the range of (-180°, 180°]

The power required to run the compressor is 18,506 W or approximately 18.5 kW, calculated using the rate of heat transfer through the insulation and the efficiency of the refrigerator.

To determine the power required to run the compressor, we need to consider the heat transfer that occurs through the insulation and the temperature difference between the interior of the refrigerator and the room.

First, we can calculate the rate of heat transfer through the insulation using the formula:

Q = kA (ΔT / d)

where Q is the rate of heat transfer, k is the thermal conductivity of the insulation material, A is the surface area of the refrigerator, ΔT is the temperature difference between the interior and exterior of the refrigerator, and d is the thickness of the insulation. Plugging in the given values, we get:

Q = (0.0119 J/m·s·°C) × (2.6 m²) × ((46.5°C - 8.5°C) / 0.045 m)

Q = 581.6 W

This represents the rate at which heat is flowing into the refrigerator from the warmer surroundings. To maintain the interior temperature at 8.5°C, the refrigerator must remove this heat at the same rate.

The ratio of the heat extracted from the interior to the work done by the motor is 3.8% of the theoretical maximum. The theoretical maximum is given by the Carnot efficiency, which is:

η = 1 - (T_cool / T_hot)

where T_cool is the temperature inside the refrigerator and T_hot is the temperature outside. Plugging in the given values, we get:

η = 1 - (8.5°C / 46.5°C) = 0.8172

So the actual efficiency of the refrigerator is:

ε = 0.038 × 0.8172 = 0.0314

This means that for every 1 W of power consumed by the motor, the refrigerator extracts 0.0314 W of heat from the interior. Therefore, the power required to run the compressor is:

P = Q / ε = 581.6 W / 0.0314 = 18,506 W

So the power required to run the compressor is 18,506 W or approximately 18.5 kW.

To learn more about compressors

https://brainly.com/question/31672001

#SPJ4

(1) The rock came to be in a various position than you thought it was by way of the wonder of refraction. The rock's position seemed different due to light refraction as it travels at varying speeds through different mediums.

2. Rock looks red as it absorbs all colors of sunlight except red.

2b.  When white light enters water, it refracts and splits into various colors.

This causes the object to perform at a different position than it literally is. In this case, the light indications coming from the rock were bent when they entered the water, making the rock to appear at a more ignorant wisdom than it actually was.

Therefore, in response to question 2, rock appears red by way of the selective assimilation and reflection of light. The rock absorbs all of the banner of silvery light except for flaming, which is mirrored back to our eyes. This is because the microscopic structure of the rock absorbs all the banner except that red, that is reflected back.

Learn more about Rock from

https://brainly.com/question/398139

#SPJ1

Because the total voltage supplied by the battery is distributed among all the components in a series circuit, if a switch is closed, the potential difference across the resistor and bulb will remain unchanged.

The light cannot be turned on when the switch is open because the circuit is incomplete. The circuit lacks a closed-loop channel for the current to follow.

The potential difference between the two extremes of the arrangement in a series connection of resistors is equal to the total of the potential differences across individual resistors.

To learn more about series circuit visit:

brainly.com/question/11409042

#SPJ9

The correct answer is c. Both Technician A and B are correct.

Technician A is correct because there is often more than one circuit being protected by each fuse. Fuses are used to protect electrical circuits from excessive current, which can cause damage or fire. It is common for multiple circuits to be connected to a single fuse, as it simplifies the electrical system and reduces the number of fuses needed.

Technician B is also correct because more than one circuit often shares a single ground connector. A ground connector provides a path for excess electrical energy to flow safely to the ground, preventing damage to components and electrical shock. By sharing a ground connector, multiple circuits can utilize a common grounding point, further simplifying the electrical system and reducing the need for additional connectors.

Overall Both technicians are correct, as multiple circuits can be protected by a single fuse, and multiple circuits can share a single ground connector.

To Know more about fuse in electrical circuits click here:

https://brainly.com/question/31229645

#SPJ11

The observation from the constructive interference supports the model of the wave nature of light. The correct option (A).

The observation of diffraction and interference lends weight to the idea that light behaves like a wave. When two or more waves interact with one another, interference occurs. It can be constructive (where the waves reinforce one another) or destructive (where the waves cancel one another out). When light waves from various sources overlap or pass through small gaps, this phenomenon can be seen.

Another property of waves, including light waves, is diffraction. When waves approach an obstruction or pass through an opening, they may bend or spread out. When light waves come into contact with sharp edges, slits, or other obstructions, diffraction patterns can be seen, and they are compatible with how waves behave.

Strong proof that light is a wave and that theories like the electromagnetic wave theory of light are correct can be found in the observations of interference and diffraction.

Hence, The observation from the constructive interference supports the model of the wave nature of light. The option is (A).

To learn more about Constructive interference, here:

https://brainly.com/question/31857527

#SPJ12

Complete Question:

Which observation supports a model of the nature of light in which light acts as a wave?

A. Constructive interference

B. Temperature change

C. Blackbody radiation

D. Photoelectric effect​

The distance between the two asteroids is approximately [tex]1.39 * 10^9[/tex]meters.

The gravitational force between two objects can be calculated using the formula:

[tex]F = G * (m_1 * m_2) / r^2[/tex]

where F is the gravitational force, G is the gravitational constant

[tex](6.67 * 10^{-11} Nm^2/kg^2)[/tex].

[tex]m_1[/tex]and [tex]m_2[/tex] are the masses of the two objects, and r is the distance between them.

In this case, we are given that:

[tex]m_1=m_2=1.41 * 10^{14} kg[/tex]

F = 1,030 N

G = [tex]6.67 *10^{-11} Nm^2/kg^2[/tex]

We can rearrange the formula to solve for r:

r = [tex]\sqrt{((G * m_1 * m_2) / F)}[/tex]

Plugging in the given values, we get:

r = [tex]\sqrt{((6.67 * 10^{-11} Nm^2/kg^2 * 1.41 * 10^{14} kg * 1.41 x 10^{14} kg) / 1,030 N) }[/tex]

r = [tex]1.39 * 10^9 meters[/tex]

To know more about gravitational force refer here

https://brainly.com/question/12528243#

#SPJ11

The new pressure of the oxygen is 128 kPa. The correct answer is (a).

In the given problem, we are given the initial pressure, volume, and temperature of oxygen in a bottle and asked to find the new pressure of oxygen after the bottle breaks open and leaks into the outer container. We can use the combined gas law equation to find the new pressure of oxygen. The volume and temperature of the oxygen changes from 0.3 L and 290 K to 1.5 L and 370 K, respectively, while the amount and state of the oxygen remain constant. Using the combined gas law equation P₁V₁ / T₁ = P₂V₂ / T₂, we can find the new pressure of the oxygen:

P₂ = (P₁ x V₁ x T2) / (V₁ x T₁)

P₂ = (500 kPa x 0.30 L x 370 K) / (1.5 L x 290 K)

P₂ = 128 kPa

To know more about temperature, here

https://brainly.com/question/11464844

#SPJ4

The stunt woman experienced a force of 1393 N while landing in the net.

A 100 kg stunt woman falls from a 9.9 m high building and is slowed down by a net over the course of 1 s. To calculate the force she experienced while landing, we first need to determine her velocity when hitting the net.

We can use the formula: v^2 = u^2 + 2as
where v is the final velocity, u is the initial velocity (0 m/s), a is the acceleration due to gravity (9.81 m/s^2), and s is the distance fallen (9.9 m).

v^2 = 0 + 2(9.81)(9.9)
v^2 = 194.118
v = √194.118 ≈ 13.93 m/s

Now, we can use the impulse-momentum theorem to find the force: Ft = mv - mu
where F is the force, t is the time taken to slow down (1 s), m is the mass (100 kg), and v and u are the final and initial velocities, respectively.

F(1) = (100)(13.93) - (100)(0)
F = 1393 N

To know more about the force, click here;

https://brainly.com/question/13191643

#SPJ11

The concept or principle used to determine that the two rock types were deposited during the same time period is the principle of faunal succession.

This principle states that fossils of similar organisms found in rocks from different locations were deposited during the same time period, as the distribution of fossils in the rock layers is related to the relative ages of the rocks.

By finding the same fossil trilobites in both the Indiana and Colorado limestone rocks, it can be inferred that the rocks were deposited during the same time period and were likely part of the same geologic formation.

To know more about faunal succession, refer here:

https://brainly.com/question/13674871#

#SPJ11

The current in the 5.00 ohm resistor is 0.052 A.

The induced emf in each metal rod is given by e = Blv, where B is the magnetic field strength, l is the length of the metal rod moving in the magnetic field, and v is the velocity of the rod. For the 10.0 ohm rod, the induced emf is e = (0.0100 T)(0.100 m)(4.00 m/s) = 0.00400 V. The current through the 10.0 ohm rod is then I1 = e/R1 = 0.000400 A.

For the 15.0 ohm rod, the induced emf is e = (0.0100 T)(0.100 m)(2.00 m/s) = 0.00200 V. The current through the 15.0 ohm rod is then I2 = e/R2 = 0.000133 A. Since the two rods are connected in series, the current through the 5.00 ohm resistor is the same as the current through the two rods: I = I1 + I2 = 0.000533 A.

Using Ohm's law, the voltage drop across the 5.00 ohm resistor is V = IR = (0.000533 A)(5.00 ohm) = 0.00266 V. Therefore, the current in the 5.00 ohm resistor is I = V/R = (0.00266 V)/(5.00 ohm) = 0.052 A.

To know more about the Parallel, here

https://brainly.com/question/31272540

#SPJ4

If you look at them with a telescope that has an angular resolution of 0. 5 arcsecond, you will see two distinct stars. Therefore, the correct statement is option A.

An angular resolution of 0.5 arcseconds means that the telescope can distinguish between two objects that are at least 0.5 arcseconds apart. This is because angular resolution is the smallest angle between two objects that can be distinguished as separate entities.

In this case, if the two stars are separated by more than 0.5 arcseconds, they will be seen as two distinct stars. However, if they are separated by less than 0.5 arcseconds, they may appear as a single blurred image, which is known as the telescope's point spread function.

This is because the light from each star is diffracted by the telescope's aperture, causing them to overlap and blur together.

If the stars are separated by more than the telescope's angular resolution, they will be seen as separate and distinct points of light. Therefore, option (a) is the correct statement.

In summary, with an angular resolution of 0.5 arcseconds, a telescope can distinguish between two objects that are at least 0.5 arcseconds apart.

If the two stars are separated by more than 0.5 arcseconds, they will appear as two distinct stars, but if they are closer together, they may appear as a single blurred image.

To know more about angular resolution refer here:

https://brainly.com/question/30575514#

#SPJ11

Complete Question:

Choose the correct statement describing, what will you see if you look at them with a telescope that has an angular resolution of 0.5 arcsecond.

a. Two distinct stars.

b. One point of light that is the blurred image of both stars.

c. Nothing at all.

Bumper cars are a popular ride at fairs and amusement parks, designed for riders to bump into each other while driving around. When two bumper cars move towards each other, there are two factors that affect the momentum of each car.

The first factor is the mass of the car. The heavier the car, the more momentum it has. So, a heavier bumper car will be harder to stop and will have more force when it hits another car. The second factor is the speed of the car. The faster a car is moving, the more momentum it has.

Therefore, if two cars are moving at the same speed, they will have equal momentum. However, if one car is moving faster than the other, it will have more momentum and cause a greater impact when it collides.

When two bumper cars crash into each other, both cars come to a stop. This is due to the law of conservation of momentum. This law states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision.

In this case, the two bumper cars collide and their momentum is transferred to each other, causing both cars to come to a stop.

When the cars collide, the force of the impact causes the cars to stop. The cars' kinetic energy is transferred to other forms of energy, such as heat and sound.

Additionally, the cars' bumpers are designed to absorb some of the impact, which also helps to slow the cars down and prevent injury to the riders.

In conclusion, the momentum of a bumper car is affected by its mass and speed. When two cars collide, they come to a stop due to the law of conservation of momentum. The force of the impact and the design of the bumpers also play a role in the cars' deceleration.

To know more about momentum refer here

https://brainly.com/question/30677308#

#SPJ11

Under such conditions the motion of the ball is periodic with a period of about 2.02 s, but not simple harmonic. Therefore, the correct answer is option D.

When a ball is dropped from a height and collides elastically with a hard surface, its motion is not simple harmonic because the force acting on the ball is not proportional to its displacement from a fixed point. Instead, the motion is periodic, meaning it repeats itself after a fixed period of time.

In this case, we can use the laws of conservation of energy and momentum to determine the motion of the ball. When the ball is dropped, it has potential energy equal to its mass times the acceleration due to gravity times its height above the surface.

As the ball falls, this potential energy is converted into kinetic energy, and when it collides with the surface, the momentum of the ball is transferred to the surface, causing the ball to rebound.

The time it takes for the ball to fall and rebound can be calculated using the equation:

[tex]time = 2 \times \sqrt{(height / acceleration\;due\;to \;gravity)}[/tex]

[tex]time = 2 \times \sqrt{(10 m / 9.8 m/s^2)}[/tex]

time = 2.02 s

Therefore, the motion of the ball is periodic with a period of about 2.02 s, but not simple harmonic.

In summary, when a ball is dropped and collides elastically with a hard surface, its motion is not simple harmonic because the force acting on the ball is not proportional to its displacement.

Instead, the motion is periodic, meaning it repeats itself after a fixed period of time. Using the laws of conservation of energy and momentum, we can determine the period of the motion. In this case, the ball's motion is periodic with a period of about 2.02 s. Therefore, the correct answer is option D.

To know more about motion refer here:

https://brainly.com/question/29255792#

#SPJ11

Answer: The various possible standing waves on a string are called Harmonics (or resonant modes). Harmonics are the frequencies of the standing waves that are produced when a string is plucked or struck. The harmonics are also sometimes referred to as overtones or partials. The nodes and antinodes are the points on the string where there is no displacement and maximum displacement respectively. The incident waves are the initial waves that are set up on the string before any reflections occur.

Explanation:

The various possible standing waves on a string are called Harmonics (or resonant modes).

Standing waves occur when two waves with the same frequency, amplitude, and wavelength travel in opposite directions and interfere with each other. This interference creates a unique pattern with specific points called Nodes and Antinodes.
Nodes are points on the string where the displacement is always zero, meaning they do not move. These points occur when the two waves perfectly cancel each other out.
Antinodes, on the other hand, are points on the string where the displacement is maximum. These points occur when the two waves perfectly reinforce each other, resulting in the greatest possible amplitude.
Harmonics (or resonant modes) are the different frequencies at which a string can support standing waves. The fundamental frequency, or first harmonic, is the lowest frequency at which a standing wave can form. Higher harmonics, or overtones, are multiples of the fundamental frequency and create more complex standing wave patterns.

Learn more about Harmonics here:-
https://brainly.com/question/9253932

#SPJ11

Dummy without a helmet experienced a higher force of impact causing a fracture, while the helmet reduced the risk of fracture by absorbing some of the impact energy.

The difference in outcome between the two identical test dummies dropped from the same height can be explained by the concepts of force, impulse, and time.

Force refers to the push or pull exerted on an object, while impulse refers to the change in momentum caused by a force acting over time. Time, on the other hand, refers to the duration of an event or the period during which a force acts on an object.

When the first dummy was dropped onto the concrete without a helmet, the force of impact caused a significant impulse in a very short amount of time. The skull could not withstand this sudden change in momentum, resulting in a fracture.

However, the second dummy wearing a bicycle helmet experienced a lower force of impact due to the helmet's ability to absorb some of the impact energy. This spread out the impulse over a longer period of time, reducing the overall force acting on the skull and minimizing the risk of fracture.

In summary, the use of a bicycle helmet reduces the force of impact by absorbing some of the energy and increasing the time it takes for the impulse to act on the skull. This demonstrates the importance of protective gear in reducing the risk of injury in potentially hazardous situations.

To know more about force refer here:

https://brainly.com/question/26115859#

#SPJ11

Answer:

Trait

Explanation:

You already have the right answer chosen.

Answer:

trait

Explanation:

Looks like you already had the right answer

It is safe to assume that each cart would experience a distinct force during each collision caused by the carts, and the force distribution would change depending on the aforementioned criteria.

During each individual collision, it is unlikely that the two carts received the same force during the collision. This is because the force of the collision depends on various factors such as the mass and velocity of the carts, the angle of collision, and the materials of the carts.

For instance, if one cart was heavier and moving faster than the other, it would exert more force during the collision. Additionally, the angle of collision can also affect the force received by each cart.

If the collision was head-on, the force would be distributed evenly between the carts. However, if the collision was at an angle, one cart would receive more force than the other.

The materials of the carts can also affect the force of the collision, as carts made of more rigid materials would receive more force than carts made of softer materials.

Overall, it is safe to say that each individual collision created by the carts would result in different forces being exerted on each cart, and the force distribution would vary depending on the aforementioned factors.

To learn more about :collision

https://brainly.com/question/7221794

#SPJ11

The frequency with which these waves meet the dock is 0.5 Hz.

To calculate the frequency of the water waves meeting the dock, you can use the formula:

Frequency (f) = Velocity (v) / Wavelength (λ)

Given that the velocity (v) is 1.2 m/s and the wavelength (λ) is 2.4 m, you can plug in these values into the formula:

f = 1.2 m/s / 2.4 m

f = 0.5 Hz

So, the frequency with which these waves meet the dock is 0.5 Hz.

To learn more about frequency, refer below:

https://brainly.com/question/5102661

#SPJ11

The elastic limit is the maximum stress that a material can withstand without undergoing permanent deformation.

When a structure is built on a fault line, the elastic limit plays a crucial role in determining its ability to withstand seismic forces.

If the stress caused by an earthquake exceeds the elastic limit of the structure's materials, the structure may experience permanent deformation, which can lead to compromised structural integrity and potential failure.

In contrast, if the stress remains within the elastic limit, the structure can return to its original shape once the stress is removed, maintaining its structural integrity.

In conclusion, the elastic limit affects a structure built on a fault line by determining its resilience to seismic forces.

Ensuring that the stress remains within the elastic limit can help maintain the structure's integrity and minimize damage during earthquakes.

To learn more about elastic, refer below:

https://brainly.com/question/13479805

#SPJ11

The wavelength of a microwave frequency is the inverse of its frequency; that is, the wavelength is equal to the speed of light (in a vacuum) divided by the frequency. In this case, the frequency is 10 GHz, meaning the wavelength is approximately 3 cm.

Wavelength is the distance from one peak of a wave to the next, and is inversely proportional to frequency; that is, as frequency increases, wavelength decreases. Microwaves, which have frequencies between 300 MHz and 30 GHz, have wavelengths of 1 m to 1 cm, respectively. This makes them ideal for applications that require short-range communication, such as microwave ovens, wireless communication, and radar.

Microwaves are also used in remote sensing, as they can penetrate some materials, such as clouds, allowing us to measure the properties of objects behind them.

Know more about wavelength here

https://brainly.com/question/12924624#

#SPJ11

The weight-watcher must climb: approximately 4.653 km to work off the equivalent of a large piece of chocolate cake rated at 948 food Calories.

To determine how high the person must climb, we'll first convert food Calories to calories, then use the formula for potential energy.

1 food Calorie = 10^3 calories, so 948 food Calories = 948 x 10^3 = 948,000 calories.

Potential energy (PE) is given by the formula: PE = mgh, where m is the mass, g is the acceleration due to gravity (9.8 m/s^2), and h is the height.

We can rearrange the formula to solve for the height (h): h = PE / (mg)

First, convert calories to joules: 1 calorie = 4.184 joules, so 948,000 calories = 3,968,112 joules.

Now, substitute the values into the formula:

h = 3,968,112 J / (87 kg x 9.8 m/s^2) = 3,968,112 / 852.6 ≈ 4653.24 meters

To convert meters to kilometers, divide by 1000:

4653.24 m / 1000 = 4.65324 km

So, the weight-watcher must climb approximately 4.653 km to work off the equivalent of a large piece of chocolate cake rated at 948 food Calories.

To know more about Calories, refer here:

https://brainly.com/question/3541581#

#SPJ11

About 130,346,719.13 meters per second is the speed of light in a medium having an absolute index of refraction of 2.3.

The difference between the speed of light in the medium and the speed of light in a vacuum or in air is known as the refractive index of a media.

n = c / v

We are given that the absolute refractive index of the medium is 2.3. So, we can write:

n = 2.3

Thus, the speed of light in the medium is:

v = c / n = c / 2.3

The speed of light in a vacuum or in air, denoted by the symbol c, is around 299,792,458 meters per second. Therefore, by substituting this value, we obtain:

v = 299,792,458 m/s / 2.3

Simplifying this expression gives:

v = 130,346,719.13 m/s

Therefore, About 130,346,719.13 meters per second is the speed of light in a medium having an absolute index of refraction of 2.3.

Learn more about refractive index here : brainly.com/question/12469161

#SPJ1

The Lagrangian is then given by L = T - V.

(a) Writing down the Lagrangian (L): The Lagrangian is the difference between the kinetic and potential energies of the system.

In this case, the particle is confined to move on the surface of a circular cone, so we need to express the kinetic and potential energies in terms of the spherical polar coordinates (r, θ).

The kinetic energy can be expressed as T = (1/2) m (dr/dt)^2 + (1/2) m r^2 (dθ/dt)^2, where m is the mass of the particle.

The potential energy can be expressed as V = m g r cosθ, where g is the acceleration due to gravity.

The Lagrangian is then given by L = T - V.

(b) Finding the equations of motion: The equations of motion can be obtained by applying the Euler-Lagrange equations to the Lagrangian L.

This involves taking partial derivatives of L with respect to the generalized coordinates (r, θ) and their derivatives (dr/dt, dθ/dt), and then solving the resulting equations.

One of the resulting equations of motion will be related to the angular momentum tz. It can be interpreted as the conservation of angular momentum around the z-axis.

The r equation of motion can be used to eliminate θ from the r equation, in favor of a constant fz.

The r equation should make physical sense even when θ = 0.

To find the value ro of r at which the particle can remain in a horizontal circular path, you would need to analyze the equilibrium conditions of the system and solve for r.

(c) Analyzing stability and frequency of oscillation: By assuming r(t) = ro + E(t), where E(t) is a small radial perturbation from the equilibrium position ro, you can substitute this expression into the r equation of motion to determine whether the circular path is stable.

Stability can be determined by examining the behavior of the perturbation E(t) over time.

The frequency of oscillation about ro can be obtained by analyzing the form of the solution E(t) and determining the frequency at which it oscillates.

To learn more about frequency, refer below:

https://brainly.com/question/5102661

#SPJ11

The peak value of the associated magnetic field is approximately 1.19×[tex]10^{6}[/tex] Tesla.

To find the peak value of the associated magnetic field, we can use the formula:

Peak magnetic field (B) = √(2P/μ0c)

Where P is the average power per unit area, μ0 is the permeability of free space, and c is the speed of light.

Substituting the given values, we get: B = √(2(2.12)/4π×[tex]10^{7}[/tex]×3×[tex]10^{8}[/tex])

Simplifying the expression, we get: B = √(1.41×[tex]10^{11}[/tex])

Therefore, the peak magnetic field is: B = 1.19×[tex]10^{6}[/tex] T

So the peak value of the associated magnetic field is approximately 1.19×[tex]10^{6}[/tex] Tesla.

To know more about magnetic field, refer here:

https://brainly.com/question/23096032#

#SPJ11

The statement "The idea of 'visible' and 'invisible' work is related to other hierarchical dichotomies in our culture about work, including 'valuable' and 'unvalued' work" is true.

Visible work refers to tasks that are easily seen and recognized, such as high-profile jobs in fields like business, law, or medicine. Invisible work, on the other hand, refers to tasks that are often unseen and undervalued, such as caregiving, domestic work, or service industry jobs.

This dichotomy is further perpetuated by the gendered division of labor, where women are often expected to perform invisible work while men are expected to perform visible work. This results in a devaluation of traditionally feminine jobs and reinforces gender inequalities in the workforce.

Furthermore, the value placed on certain types of work is often linked to the economic rewards and social status that accompany them. This creates a hierarchy of jobs where those in visible, high-status positions are paid more and afforded more respect than those in invisible, low-status positions.

In summary, the idea of visible and invisible work is related to other hierarchical dichotomies in our culture about work, including valuable and unvalued work. This perpetuates gender inequalities and creates a hierarchy of jobs based on economic rewards and social status.

To know more about dichotomies refer here:

https://brainly.com/question/31110702#

#SPJ11

Complete Question:

The idea of "visible" and "invisible" work is related to other hierarchical dichotomies in our culture about work, including "valuable" and "unvalued" work. True or False.

The change, on its own, that will cause the voltmeter to show a positive reading is Reduce the intensity of light incident on the light-dependent resistor (LDR). Option C

When the intensity of light incident is reduced on the light-dependent resistor  LDR, it will increase its resistance.

This would cause a massive drop in voltage across the LDR.

This will then cause the potential at Y to be lower than that at X. This change alone could result in a positive reading on the voltmeter.

Find more exercises on light-dependent resistor  LDR;

https://brainly.com/question/27844122

#SPJ1

The plane's speed with respect to the ground is the vector sum of its velocity and the wind's velocity, which is 75 km/hr to the east.

To determine the plane's speed with respect to the ground, we can use vector addition.

We can break down the plane's velocity vector into its components: a northward component of 150 km/hr and an eastward component of 0 km/hr (since the plane is not moving eastward).

Similarly, we can break down the wind's velocity vector into a northward component of 0 km/hr and an eastward component of 75 km/hr.

To find the resultant velocity vector, we add the corresponding components of the plane and the wind.

The northward components cancel each other out, and we are left with an eastward component of 75 km/hr. Therefore, the plane's speed with respect to the ground is 75 km/hr.

In summary, the plane's speed with respect to the ground is the vector sum of its velocity and the wind's velocity, which is 75 km/hr to the east.

To know more about vector addition, refer here:

https://brainly.com/question/28501946#

#SPJ11

The solar cell that applies photosynthesis chemistry to generate hydrogen is different from traditional solar cells that directly convert sunlight into electricity because it uses a chemical process to store the energy generated by sunlight, whereas traditional solar cells directly produce electricity.

In the photosynthesis-based solar cell, the energy from sunlight is used to split water into hydrogen and oxygen through a chemical reaction, and the hydrogen is stored for later use in a fuel cell to generate  the electricity. Traditional solar cells, on the other hand, generate electricity by converting sunlight directly into electrical energy through the photovoltaic effect.

To know more about photosynthesis, here

brainly.com/question/29764662

#SPJ4

--The complete Question is, How does the solar cell that applies photosynthesis chemistry to generate hydrogen differ from traditional solar cells that directly convert sunlight into electricity? --

The magnitude of the electric field between two parallel plates is given by:

E = V/d

where V is the potential difference between the plates and d is the distance between them.

In this case, V = 12 V and d = 0.59 cm = 0.0059 m. Substituting these values, we get:

E = 12 V / 0.0059 m

E = 2033.9 V/m

Therefore, the magnitude of the electric field is 2033.9 V/m.

According to the question, the gravitational force is 98 N. The frictional force is 39.2 N. The acceleration is 1.5 m/s².

Gravitational force is a natural phenomenon that exists between any two objects with mass. It is the force of attraction between two masses that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This force is usually expressed in Newton's law of universal gravitation, where the force of gravity between two objects can be calculated by multiplying their masses and dividing by the square of the distance between them.

The gravitational force is the force of gravity that acts on the box and is equal to the mass of the box times the acceleration due to gravity.

Gravitational force = 10 kg × 9.8 m/s² = 98 N

The normal force is equal to the mass of the box times the acceleration due to gravity.

Frictional force = coefficient of friction × normal force

          = 0.4 × (10 kg × 9.8 m/s²)

          = 39.2 N

The acceleration of the box is calculated using Newton's second law of motion, which states that the net force on an object is equal to the mass of the object times its acceleration.

Net force = mass × acceleration

15 N = 10 kg × a

a = 1.5 m/s²

To learn more about gravitational force

https://brainly.com/question/72250

#SPJ4