The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance lose energy during a change of state. Before the change, the atoms are close together but are able to slide past one another.

A diagram has a triangle at center with gas on top, liquid on bottom right, solid on bottom left. An arrow from gas to liquid is labeled O, and an arrow from liquid to gas is labeled N. An arrow from solid to liquid is labeled P, and an arrow from liquid to solid is labeled Q. An arrow from solid to gas is labeled L, and an arrow from gas to solid is labeled M.

Which arrow represents the change of state described above?

M N P Q

The vertical velocity of the projectile upon returning to its original is 17. 74 m/s

Using the formula:

Vertical velocity component , Vy = V * sin(α)

Where

V = initial velocity = 36. 6 m/s

α = angle of projectile = 29°

Substitute into the formula

Vy = 36. 6 * sin ( 29°)

Vy = 36. 6 * 0. 4848

Vy = 17. 74 m/s

Thus, the vertical velocity of the projectile upon returning to its original is 17. 74 m/s

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The cut off frequency of the magnesium atom is obtained as 8.9 * x 10^18 Hz.

The cut off frequency is the lowest frequency of the incident ray at which photoelectric effect occurs.

Given that;

1 eV  gives 1.60 x 10-19 J

3.70 eV  gives 3.70 eV * 1.60 x 10-19 J/1 eV

= 5.92x 10^-19 J

Now;

Wo = hfo

fo = Wo/h

fo = 5.92x 10^-19 J/6.6 * 10^-34

fo = 8.9 * x 10^18 Hz

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Answer:

I'm not a scholar of hydroelectric power in Nepal, so consider my answers carefully, below.

Explanation:

High Potential:  Hydroelectric power comes from the potential energy stored in a mass that is above Earth's surface.  As the word "hydro" implies, the mass in this case is water.  Water from snow and glacier melt, and from normal precipitation (rain) in mountainous regions eventually cascades down the mountains in fast-flowing rivers or waterfalls.  Often, there are lakes or man-made reservoirs to collect and store the water before it flows down.  Mt. Everest is 8848 meters tall (about 29,000 feet).    If a lake forms at just 2,000 meters, one can calculate the amount of energy in each kilogram of water stored in the lake that represents the potential energy available at that altitude.  1 kg of water at 2,000 meters has potential energy, PE, according to the equation:  PE = mgh, where m is the mass in kg, g is Earth's acceleration due to gravity (9.8 m/sec^2), and h is height, in meters.  

PE = mGH

PE = (1 kg)*(9.8 m/sec^2)*(2,000 meters) = 19,000 kg*m/sec^2

1 kg*m/sec^2 is the SI unit for 1 Joule, a measure of energy.

This potential energy can be converted into electrical energy by releasing the water so that it can flow down to a water-powered turbine that spins magnets and coils of wire that produce electricity.  The 19,000 Joules of water potential energy can be converted to electrical power, less any inefficiency in the system, such as friction.

Nepal has the natural advantage in that it has many high mountain ranges with water flows that can be used for generating electrical power.  The result is low operating costs (the fuel is the flowing water) and no greenhouse gas emissions

The difficulty in developing hydroelectric power in Nepal is due to the same factor that gives it an advantage:  it is difficult constructing large hydroelectric plants in such rough terrain, and the power lines that are needed to transport the power to its destination are expensive and difficult to maintain and repair.

Answer:

1,800kg

Explanation:

Force = Mass x Acceleration

F = m x a

15840N = m x 8.8

8.8 x m = 15840

m = 15840/8.8

= 1,800kg

Answer:

[tex]\displaystyle 1800\:kg.[/tex]

Explanation:

[tex]\displaystyle am = F_{net} \\ \\ \frac{15840}{8,8} = \frac{8,8m}{8,8} \\ \\ \boxed{1800 = m}[/tex]

I am joyous to assist you at any time.

Answer:

The magnitude of acceleration should be increasing.

Velocity is positive as the mass is moving towards the maximum positive displacement. Velocity would be decreasing. Acceleration is negative as velocity is decreasing. Additionally, the magnitude of acceleration would be increasing (becomes more negative.)

Explanation:

As the mass in this question moves upwards, the displacement of this mass is becoming more positive. Hence, the velocity of this mass would be positive.

In a simple harmonic motion, velocity is:

The mass in this question is moving from [tex]0[/tex] displacement (where velocity is maximized) towards maximum displacement (where velocity is [tex]0[/tex].) Thus, the velocity of the mass would be decreasing.

Since the velocity of this mass is decreasing, the acceleration of this mass would be negative. In a simple harmonic motion, acceleration is:

The mass in this question is moving from the equilibrium position (where acceleration is [tex]0[/tex]) towards maximum displacement (where acceleration is most negative.) Thus, the magnitude of the acceleration of this mass would be increasing, and the acceleration of the mass would become more negative.

Answer:

the acceleration should be increasing, not decreasing.

or in other words, D.

The time period resulting in oscillations will be 1.986 seconds.

The period is the amount of time it takes for a particle to perform one full oscillation. T is the symbol for it. Taking the reciprocal of the frequency yields the frequency of the oscillation.

The time period of the oscillation is;

[tex]\rm T = 2 \pi\sqrt{\frac{L}{g}} \\\\ \rm T = 2 \times 3.14 \times \sqrt{ \frac{98.2 \ \times 10^{-2} \ m}{9.81 \ m/s^2}} \\\\ T= 1.986 \ sec[/tex]

Hence the time period resulting oscillations will be 1.986 seconds.

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Answer:

The value of mass 1, m1= 6/5m

The value of mass 2, m2= 3/5m

Explanation:

case 1:

here tension and the acceleration will be:

for m1;

for m2:

adding the both equations,

2mg - 2T + 2T-mg = 2ma + ma/2

a = 2/5 g

putting the value of a into the equation 1.

mg - T = m* (2/5)g

T = 3/5 ( mg )

now

case 2:

The two identical blocks are released from the rest, the tension remains the same as the case 1.

so,

for m1:

for m2:

adding both equations we get,

2T-m2g + 2m2g - 2T = 0

m2 = m1 / 2

T = m1*g / 2

here we know that

T (case1) = T (case2)

3/5 ( mg ) = m1*g / 2

m1 = 6/5 m

hence

m2 = 3/5 m

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Answer:

HELIOS- The god of the sun in

HAZMAT-Hazardous materials

NIRSpec- Near Infrared Spectrograph

Explanation:

The acronyms will be:

HAZMAT is an abbreviation for “hazardous material that is the substances in quantities or forms that may pose a reasonable risk to health, property, or the environment.

Near-infrared spectroscopy (NIRS) is a brain imaging method that measures light absorbance to calculate oxy-hemoglobin (oxy-HB) and deoxy-hemoglobin.

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Answer:

The area under V-t graph gives displacement.

More to know -

Velocity = speed/ time

it's speed with direction.

acceleration = rate of change of velocity

A velocity-time graph provides information about the motion of an object over time Acceleration, displacement, and velocity. The correct option is option (B).

Acceleration: The slope of the velocity-time graph represents the object's acceleration. A positive slope indicates positive acceleration (speeding up), a negative slope indicates negative acceleration (slowing down or decelerating), and a flat line indicates zero acceleration (constant velocity).

Displacement: The area under the velocity-time graph represents the displacement of the object. By calculating the area between the graph and the time axis, we can determine the total displacement.

Velocity: The graph directly shows the object's velocity at different points in time. The vertical position of the graph at any given time represents the object's instantaneous velocity.

Therefore, a velocity-time graph can provide information about the acceleration, displacement, and velocity of the moving object. The correct option is option (B).

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The initial horizontal velocity of the rock, in m/s is 21.241 m/s.

When an object is thrown at an angle from the horizontal direction, the object is said to be in projectile motion. The object which follows the projectile motion.

Time taken by the stone to reach the ground is

t = √2h/g

t = √(2x 86)/9.81

t = 4.19s

The horizontal velocity is

V(x)  = Horizontal distance traveled / Time taken t

Put the values, we get

V(x) = 89 m/4.19 s

V(x) = 21.241 m/s

Thus, the horizontal velocity is 21.241 m/s

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b. The wavelength of light emitted by the object is 233 nm

c. The type of radiation originally emitted by the object is ultraviolet radiation.

To find the wavelength, we need to know what redshift is.

Redshift is the increase in wavelength and the corresponding decrease of frequency and photon energy of electromagnetic radiation.

Redshift is given by z = λ'/λ - 1 where

Making λ subject of the formula, we have

λ = λ'/(1 + z)

Given that has a redshift of 7.6 and the JWST observes the object at a wavelength of 2 micrometres (mid-infrared light).

So,

Substituting the values of the variables into the equation, we have

λ = λ'/(1 + z)

λ = 2μm/(1 + 7.6)

λ = 2μm/8.6

λ = 0.233 μm

λ = 233 nm

So, the wavelength of light emitted by the object is 233 nm

Since the wavelength is 233 nm and the wavelength is in the range of ultraviolet radiation 200 nm - 315 nm.

So, the type of radiation originally emitted by the object is ultraviolet radiation.

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Anita has to pay attention to biometrics since even the most accomplished athletes may benefit from it.Option B is correct.

Biometrics is the measurement of physiological traits that may be used to identify a person, including but not limited to fingerprint, iris pattern, and face features.

Anita is aware that she is one of her team's top basketball players. She has drawn interest from several colleges.

One has offered her the chance to collaborate with a biometrics expert once she joins the company. Since she is already a very accomplished athlete.

Anita does not believe that this is truly essential. The best piece of advice I can give Anita is to pay attention to biometrics since even the most accomplished athletes may benefit from it.

Hence,option B is correct.

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Both the butterfly and the large car will have equal forces but in opposite direction.

Newton's third law of motion states that action and reaction are equal and opposite. That is, the force exerted on an object is equal to the reaction experienced by the object.

Fa = - Fb

where;

Thus, both the butterfly and the large car will have equal forces but in opposite direction.

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Answer:

The strength of the electromagnet increases.

Explanation:

Answer:

Roots are basically hooked into the ground?

Explanation:

Maybe you could comment here the choices if it's multiple choice.

Answer:

337.5m

Explanation:

Kinematics

Under constant acceleration, the kinematic equation holds:

[tex]s=\frac{1}{2}at^2+v_ot+s_o[/tex], where "s" is the position at time "t", "a" is the constant acceleration, "[tex]v_o[/tex]" is the initial velocity, and [tex]s_o[/tex] is the initial position.

Defining Displacement

Displacement is the difference in positions: [tex]s-s_o[/tex] or [tex]\Delta s[/tex]
[tex]s=\frac{1}{2}at^2+v_ot+s_o[/tex]

[tex]s-s_o=\frac{1}{2}at^2+v_ot[/tex]

[tex]\Delta s=\frac{1}{2}at^2+v_ot[/tex]

Using known information

Given that the initial velocity is zero ("skier stands at rest"), and zero times anything is zero, and zero plus anything remains unchanged, the equation simplifies further to the following:

[tex]\Delta s=\frac{1}{2}at^2+v_ot[/tex]

[tex]\Delta s=\frac{1}{2}at^2+(0)*t[/tex]

[tex]\Delta s=\frac{1}{2}at^2+0[/tex]

[tex]\Delta s=\frac{1}{2}at^2[/tex]

So, to find the displacement after 15 seconds, with a constant acceleration of 3.0 m/s², substitute the known values, and simplify:

[tex]\Delta s=\frac{1}{2}at^2[/tex]

[tex]\Delta s=\frac{1}{2}(3.0[\frac{m}{s^2}])(15.0[s])^2[/tex]

[tex]\Delta s=337.5[m][/tex]

Answer:The velocity of the object will be 5[tex]\sqrt7[/tex]m/s or 13.23m/s

Explanation:

force exerted by the object= 30N

distance displayed by the object by the action of force=6.0m

mass of object=10kg

velocity gained by the object=?

[tex]\frac{1}{2}mv^{2}= forcexdisplacement\\\frac{1}{2}10v^{2} = 30x6\\ 5v^{2}=180\\ v^{2}= 180-5\\ v^{2} =175\\v=\sqrt{175} \\v=5\sqrt{7} or 13.23[/tex]

The two most successful theories of light were the corpuscular (or particle) theory of Sir Isaac Newton and the wave theory of Christian Huygens. Newton's corpuscular theory stated that light consisted of particles that travelled in straight lines.

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Answer:

a single closed path of electrical components including a voltage source

Answer:

.5102 s

Explanation:

Net force acting to accelerate the body is 5000- 100 = 4900 N

F = ma

4900 N = 50 kg * a       then a = 98 m/s^2

v= at

50 m/s  =  98 m/s^2  t        then t =  50/98 =.5102 s

Answer:

42.417 cm³

Explanation:

The formula to find the volume of a cone is :

V = [tex]\frac{1}{3}[/tex] × π r² h

Here,

r ⇒ radius ⇒ 3 cm

h ⇒ height ⇒ 4.5 cm

Let us find it now.

V = [tex]\frac{1}{3}[/tex] × π r² h

V = [tex]\frac{1}{3}[/tex] × π × 3 × 3 × 4.5

V = [tex]\frac{1}{3}[/tex] × π × 9 × 4.5

V = [tex]\frac{1}{3}[/tex] × π × 9 × 4.5

V = [tex]\frac{1}{3}[/tex] × π × 40.5

V = [tex]\frac{1}{3}[/tex] × 3.142 × 40.5

V = [tex]\frac{1}{3}[/tex] × 127.251

V = 42.417 cm³

The volume in the pump when the pump piston is all the way down represents the end systolic volume.

End systolic volume is the volume of blood in a ventricle at the end of contraction, or systole, and the beginning of filling, or diastole.

End systolic volume is the lowest volume of blood in the ventricle at any point in the cardiac cycle.

Thus, the volume in the pump when the pump piston is all the way down represents the end systolic volume.

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The statement that differentiates an audiologist from an anthropologist is that an audiologist examines physical characteristics of humans. That is option C.

Audiologist is an individual that specializes in the diagnosis, treatment and management of hearing loss and balance disorders in adults and children.

An anthropologist is also an individual that studied the past and present experiences of individuals.

Therefore, the statement that differentiates an audiologist from an anthropologist is that an audiologist examines physical characteristics of humans.

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The increase in potential energy of his mother if her mass is 56.0 kg will be 6031.97 J.

The energy that an item has due to its location in a gravitational field is known as gravitational potential energy.

The potential energy increases by 3773 J

PE₂-PE₁=mg(h₂-h₁)

3773 J = 35.0 × 9.81 × (h₂-h₁)

(h₂-h₁) = 10.98

Case 2 ;

ΔPE =?

ΔPE=mg(h₂-h₁)

ΔPE=56.0 × 9.81 ×10.98

ΔPE=6031.97 J.

Hence, the increase in potential energy of his mother if her mass is 56.0 kg will be 6031.97 J.

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The cliff diver jumps off with a velocity of 7.85m/s at an angle of 86° with respect to the ground.

The height of the cliff = 57m

The horizontal distance from the cliff = 2.15m

The time is taken = 4.3s

The acceleration due to gravity g = 9.81m/s²

Consider the vertical y-axis

                    d = ut +1/2gt²

                   57 = u (4.3) + 1/2 (9.81) (4.3)²

                   57 = 4.3u + 90.69

                    u = -7.836m/s

The y component of initial velocity is in the upwards direction

Consider the horizontal x-axis

                    d = ut

                    2.15 = u (4.3)

                    u = 0.5 m/s

The net velocity is the square root of the summation of the squares of the x and y components of velocity

Net velocity = 7.85m/s

For the direction, tan θ = y/x = 15.67

θ= 86°

So the cliff diver jumps off with a velocity of 7.85m/s at an angle of 86° with respect to the ground.

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Answer:

C

Explanation:

First the water heats up to the boiling point ( temp increases)

  then, as it boils it remains at constant temp ( boiling point)

The temperature of water changes when it is heated as it increases first and then remains constant. So, option C is correct.

When a liquid is heated to its boiling point, the temperature at which the vapor pressure of the liquid equals the pressure that the surrounding environment exerts on the liquid, boiling is the fast vaporization of the liquid that takes place.

Boiling can be divided into two primary categories: nucleate boiling, in which tiny bubbles of vapor develop at specific locations, and critical heat flux boiling, in which the boiling surface is heated above a critical temperature and a film of vapor forms on the surface. Transition boiling is an unstable, transitional kind of boiling that contains both sorts of components. Due to the decreased air pressure found at higher elevations, water's boiling point, which is 100 °C or 212 °F, is lower.

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Answer:

See below

Explanation:

Measure the distance and the amount of time to cover that distance

 then speed   =    distance / time

Answer:

s=d/t

Explanation:

s=speed

d=distance

t=time

Just basic formula stuff

Answer:

48 kilometers per hour

Explanation:

144/3 = 48 km/h