Answer:
When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force.
The force you apply to a machine is called the effort force.
What is a machine?A machine is a device that is designed to make work easier by changing the direction or magnitude of a force. Machines can be simple, like a lever or pulley, or complex, like an engine or computer.
The basic principle behind all machines is the idea of mechanical advantage, which allows us to do more work with less effort by trading off the force for distance.
The efficiency of a machine is a measure of how much of the input energy is converted into useful output work.
The efficiency of a machine is calculated as the ratio of output work to input work, expressed as a percentage:
Efficiency = (Output work / Input work) x 100%
Output work refers to the amount of work that is done by the machine,
input work is the energy that is put into the machine to make it work.
The difference between the two is the energy that is lost to friction, heat, or other inefficiencies.
Mechanical advantage is a measure of the amplification of force achieved by a machine. It is defined as the ratio of the output force(Load) to the input force (effort). A machine with a mechanical advantage greater than 1 will make it easier to do work by amplifying the force applied to it.
The mechanical advantage of a machine can be calculated using the following formula:
Mechanical Advantage = Output Force(load) / Input Force(effort)
The velocity ratio is a measure of how much the speed of the machine is changed relative to the input speed. It is defined as the ratio of the distance moved by the effort or input force to the distance moved by the load or output force. Velocity ratio is commonly used in the analysis of machines such as pulleys and gears.
The velocity ratio of a machine can be calculated using the following formula:
Velocity Ratio = Distance moved by effort force / Distance moved by load force
Here in the question,
The force you apply to a machine is called the effort force. The effort force is the force applied to a machine, such as a lever or a pulley, in order to move an object or overcome resistance.
In simple machines, the effort force is used to overcome a load or resistance, which is the force that opposes the movement of the object being moved.
The relationship between the effort force and the load or resistance is often described in terms of mechanical advantage, which is the ratio of the output force to the input force. By applying a smaller effort force, a machine can increase its mechanical advantage and make it easier to move a larger load or overcome a greater resistance.
Hence the force we applied to a machine is called effort force.
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how far will an automobile move if 168000 j of work is created by 2000 n of force
Answer:
Distance = 84 meters
Explanation:
Given the following data;
Work done = 168,000 Joules
Force = 2,000 Newton
To find the distance covered by the automobile, we would use the formula;
[tex] Workdone = force * distance [/tex]
Substituting into the formula, we have;
[tex] 168000 = 2000 * distance [/tex]
[tex] Distance = \frac {168000}{2000} [/tex]
Distance = 84 meters
_______ is responsible for all the genetic material in living things. DNA Codon Anticodon Replication
A. DNA
B. Codon
C. Anticodon
D. Replication
in each of the following divide the second number by the first number and find the quotient:3/4,-3/8
Answer:
[tex]\dfrac{-1}{2}[/tex]
Explanation:
We need to divide the second number by the first number and the numbers are 3/4,-3/8.
First number = 3/4
Second number = -3/8
Dividing the second number by the first number.
So,
[tex]\dfrac{\dfrac{-3}{8}}{\dfrac{3}{4}}[/tex]
We know that,
[tex]\dfrac{\dfrac{a}{b}}{\dfrac{c}{d}}=\dfrac{a}{b}\times \dfrac{d}{c}[/tex]
So,
[tex]\dfrac{\dfrac{-3}{8}}{\dfrac{3}{4}}=\dfrac{-3}{8}\times \dfrac{4}{3}\\\\=\dfrac{-1}{2}[/tex]
So, the answer is (-1/2)
A 4 kg mass is moving at 8 m/s collides with a 2 kg mass moving at 5 m/s.
After the collision, both objects stick together, what is the velocity of the
two cars? *
Answer:
V = 7 m/s
Explanation:
Given that,
Mass 1, m₁ = 4 kg
Speed of the object 1, v₁ = 8 m/s
Mass 2, m₂ = 2 kg
Speed of object 2, v₂ = 5 m/s
After the collision, both objects stick together. Let V be the common velocity. Using the conservation of linear momentum to find it.
[tex]m_1v_1+m_2v_2=(m_1+m_2)V\\\\V=\dfrac{m_1v_1+m_2v_2}{m_1+m_2}\\\\V=\dfrac{4(8)+2(5)}{4+2}\\\\V=7\ m/s[/tex]
So, the velocity of two cars is 7 m/s.
nilai x
Hitung
3^x2 x 3^5x
= 3^24
Answer:
x = - 8 atau 3
Explanation:
3ˣ² × 3⁵ˣ = 3²⁴
Penarikan:
Mᵃ × Mᵇ = Mᵃ⁺ᵇ
3ˣ² × 3⁵ˣ = 3ˣ²⁺⁵ˣ
Karena itu
3ˣ² × 3⁵ˣ = 3²⁴
3ˣ²⁺⁵ˣ = 3²⁴
x² + 5x = 24
Mengatur kembali
x² + 5x - 24 = 0
Pemecahan dengan faktorisasi
x² - 3x + 8x - 24 = 0
x (x - 3) + 8 (x - 3) = 0
(x + 8) (x - 3) = 0
x + 8 = 0 atau x - 3 = 0
x = - 8 atau x = 3
Karena itu,
x = - 8 atau 3
The speed of S-waves is what percent of that of P-Waves?
Help plz
Answer:
For the distance range 50 to 500 km, the S-waves travel about 3.45 km/s and the P-waves around 8 km/s.
hope it helps.
a person travelled 350 m east from his home and returns back home an hour has displacement of_?
Answer:
vector of zero magnitude
Explanation:
The displacement is a vector magnitude, therefore, in addition to being a module, it has direction and sense.
In this case it moved 350 m and then returned the same 350 m, so the total displacement is zero.
If we draw the vector, one has a directional direction to the right and the other direction to the left, therefore when adding the two vectors gives a vector of zero magnitude
A charge of .006 C passes through a cross sectional area of a wire in 2 seconds. What is the current in the wire?
Answer:
0.003 A
Explanation:
Q = It
Q = charge = 0.006C
I = current = ?
t = time = 2 s
I = Q/t
I = 0.006 / 2
I = 0.003 A
What is the force between a 3 C charge and a 4 C charge separated by a distance of 2 meter
Answer:
[tex]fr = \frac{9 \times 10 {}^{9} \times 3 \times 4}{2 {}^{2} } \\ fr = 27 \times 10 {}^{9} n[/tex]
The international space station (ISS) orbits the earth with a velocity 7.6 km/s. How much energy is required to lift a payload of 2500 kg from the surface of the earth to the ISS
Answer:
7.22×10¹⁰ J
Explanation:
From the question given above, the following data were obtained:
Velocity (v) = 7.6 Km/s
Mass (m) = 2500 kg
Energy (E) =?
Next, we shall convert 7.6 Km/s to m/s. This can be obtained as follow:
1 km/s = 10³ m/s
Therefore,
7.6 Km/s = 7.6 Km/s × 10³ m/s / 1 km/s
7.6 Km/s = 7.6×10³ m/s
Finally, we shall determine the energy required as follow:
Velocity (v) = 7.6×10³ m/s
Mass (m) = 2500 kg
Energy (E) =?
E = ½mv²
E = ½ × 2500 × (7.6×10³)²
E = 1250 × 57760000
E = 7.22×10¹⁰ J
Thus, 7.22×10¹⁰ J of energy is required.
PLEASE I NEED HELP
Best answer gets BRAINLIEST
A 3.23kg book falls off the top of a 3.01 m bookshelf. What is its kinetic energy right before it hits the ground? ( g= −9.81m/s2 )
Show work please
Answer:
K= 95.4 J
Explanation:
For this exercise we must use the conservation of mechanical energy.
We set a reference system on the floor.
Starting point. Higher
Em₀ = U = m g h
Final point. Just before taking the floor
Em_f = K = ½ m v²
energy is conserved because there is no friction
Em₀ = Em_f
mg h = K
The height is
h = y -y₀h = 0- y₀
let's calculate
K = 3.23 (-9.81) (-3.01)
K= 95.4 J
A car accelerates at a rate of 4.00 m/swest for 5.0 seconds. What is the car's change in
velocity?
Answer:
20 m/s
Explanation:
Acceleration = Change in velocity/ time
4 = Change in Velocity/ 5
Change in velocity = 20 m/s
A light ray bounces off a fish in your aquarium. It travels
through the water, into the glass side of the aquarium, and
then into air. As the light from the glass hits the air, the index of
refraction for air is much
than the index of refraction
for glass which causes the light to bend toward the angle that it
entered the air.
Answer:
Correct
Explanation:
Because the light can't travel as quickly in the water as it does in the air, the light bends around the pencil, causing it to look bent in the water. Basically, the light refraction gives the pencil a slight magnifying effect, which makes the angle appear bigger than it actually is, causing the pencil to look crooked.
Answer:
Because the light can't travel as quickly in the water as it does in the air, the light bends around the pencil, causing it to look bent in the water. Basically, the light refraction gives the pencil a slight magnifying effect, which makes the angle appear bigger than it actually is, causing the pencil to look crooked.
Explanation:
A day on a distant planet observed orbiting a nearby star is 21.5 hr. Also, a year on the planet lasts 69.3 Earth days. In other words, for the purposes of unit conversion, there are 24 hr in a day, 60 min in an hour, and 60 s in a minute, as it would for astronomers on Earth observing the planet. Calculate the average angular speed of the planet about its own axis of rotation in radians per second, with the second as measured on Earth. what is the speed of rotation? Calculate the average angular speed of the planet as it travels around its neighboring star, with the second as measured on Earth. what is the speed of orbit?
Answer:
Part A
The angular speed of rotation of the plane is 8.11781 × 10⁻⁵ rad/s
Part B
The angular speed of orbit of the planet is 1.04938 × 10⁻⁶ rad/s
Explanation:
The parameters of the planet are;
The duration of a day on the distant planet = 21.5 hr.
The duration of a year on the distant planet = 69.3 Earth days
Part A
The duration of a day = The time to make one complete revolution of 2·π radians
∴ The average angular speed about its axis, [tex]\omega_{rotation}[/tex] = Angle turned/Time
∴ [tex]\omega_{rotation}[/tex] = 2·π/(21.5 × 60 × 60) s ≈ 8.11781 × 10⁻⁵ rad/s
The average angular speed of the planet about its own axis, [tex]\omega_{rotation}[/tex] = 8.11781 × 10⁻⁵ rad/s
The angular speed of rotation of the plane [tex]\omega_{rotation}[/tex] = 8.11781 × 10⁻⁵ rad/s
Part B
The time it takes the planet to revolve round the neighboring star once = 69.3 Earth days
Therefore, the average angular speed of the planet around its neighboring star, [tex]\omega _{Star}[/tex], is given as follows;
[tex]\omega _{Orbit}[/tex] = 2·π/((69.3 × 24 × 60 × 60) s) = 1.04938 × 10⁻⁶ rad/s
The average angular speed of orbit, [tex]\omega _{Orbit}[/tex] = 1.04938 × 10⁻⁶ rad/s
The angular speed of orbit of the planet, [tex]\omega _{Orbit}[/tex] = 1.04938 × 10⁻⁶ rad/s.
As a projectile travels down its trajectory path, it covers _____.
A. more distance each second
B. a distance that depends on how it was dropped
C. the same amount of distance each second
D. less distance each second
Answer:
it is C.
definitely C
Explanation:
if I am right.
plz help me out and give brainliest
In an experiment, you test whether the number of times you rub a cloth against a balloon changes how long it will stick against the wall. You start by rubbing the balloon 10 times with the cloth and stick it to the wall. You repeat this three times and record your results in a table.
Observation
Number of Times Balloon is Rubbed by Cloth Trial #1 Trial #2 Trial #3
10 6 seconds 20 seconds 20 seconds
What statement best reflects why you should do repeated trials in an experiment? (2 points)
a
Rubbing the balloon against a cloth 10 times produces very different results each time it is repeated.
b
The first trial is right because it is done with new materials that give the best results.
c
The second and third trials were wrong because they were very different from the first trial.
d
You would make a wrong conclusion if it were based on the first trial in the experiment.
Uranium-238 undergoes alpha decay. In addition to the alpha particle, which isotope forms?
Answer: B - 234/90 TH
Explanation: A P 3 X
Answer: B - 234/90 TH
Explanation:
Can anyone plz send me the solved questions this is Energy chapter
Answer:
34' jhm
Explanation:
Pedro uses a bar magnet to pick up a nail. He then touches the tip of the nail to some staples.
Answer:
B) The nail has become a temporary magnet, while the bar magnet remains a permanent magnet.
Explanation:
I hope this helped you ;)
A planet outside of our solar system
Answer:
exoplanets is any planet beyond our solar system.
5) Apply according to the Law of Universal Gravitation, is there a stronger gravitational force between you and Earth or an elephant and Earth? Why?
Answer:
Elephant and the eath because Fg is determined by Mass of an object.. So elephant has greater mass therefore, it's Fg is higher
According the universal law of gravitation, the gravitational force is directly proportional to the mass of an object. An elephant weighs so much than a man and thus it will experience larger gravitational force from earth.
What is gravitational force?Gravitational force is a resistive force by which an object attracts other objects towards its centre of mass. The force exerted by the object depends on the mass and the force experienced by the other object depends on its mass and distance between the two objects.
According to universal law of gravitation, the gravitational force is directly proportional to the mass of the object and distance from the ground. The expression for the law is written as:
[tex]\rm g = G \frac{M_{1} M_{2}}{r^{2}}[/tex]
Where, G is the universal gravitational constant and M1 and M2 be the masses of two objects which and r be the distance between them. As per this relation gravity decreases with increase in distance and increase with an increase in mass.
Therefore, a massive body such as an elephant will experience greater gravitational force from the earth.
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How can knowing a chemical property such as flammability help you to use a product safely?
Answer:
When a substance burns, it produces new substances during a chemical change. Therefore, whether or not a substance is flammable is a chemical property. Knowing which substances are flammable helps you to use them safely. Another chemical property is how compounds react to light
PLZ hurry! Thank you
A blu-ray player that is not playing still uses 6 W of power. What is the current into the blu-ray player if it is plugged into a standard 120V outlet?
Answer:do it again
Explanation:
It will work
38. How would you dilute a concentrated solution...
Answer:
Water
Explanation:
A dilution is a solution made by adding more solvent to a more concentrated solution (stock solution), which reduces the concentration of the solute. An example of a dilute solution is tap water, which is mostly water (solvent), with a small amount of dissolved minerals and gasses (solutes).
~Hope this helps
HELP ME ANSWER THIS FOR 96 POINTS PLEASE!!
The three modified Atwood's machines shown below have blocks of mass M on a frictionless surface
and hanging from a string. When the blocks are released, they accelerate.
Rank them from smallest to largest and explain why in a short paragraph using the mass terms and force.
Answer:
Smallest - B
Largest - C
Middle - A
The hanging mass provides the force for accelerating the system.
In case A the force M G accelerates 2 * M
So you have for F = M a M * g = 2 * M * a or a = g / 2
In case B F = M a M * g = 3 * M * a and a = g / 3
In case C F = 2 * M * g 2 M * g = 3 * M * a and a = 2 * g / 3
Rank from smallest to largest force Smallest - B, Middle - A, Largest - C.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Smallest - B
Largest - C
Middle - A
The hanging mass provides the force for accelerating the system.
In case A the force M G accelerates 2 * M
So you have for F = M a M * g = 2 * M * a or a = g / 2
In case B F = M a M * g = 3 * M * a and a = g / 3
In case C F = 2 * M * g 2 M * g = 3 * M * a and a = 2 * g / 3
Rank from smallest to largest force Smallest - B, Middle - A, Largest - C.
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ok this is the one i need help with but no
links bc i know its viruses
Answer:
polar covalent bonding
Explanation:
Water (H2O) is polar because of the bent shape of the molecule. The shape means most of the negative charge from the oxygen on side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule. This is an example of polar covalent chemical bonding.
A 6 kg object has a speed of 24 m/s. What is its kinetic energy?
Explanation:
K.E = 1/2mv²
K.E = 1/2 * 6 * 24²
K.E = 1728J
Answer:
K.E = 1/2mv²
K.E = 1/2 * 6 * 24²
K.E = 1728J
Explanation:
3.- Un barco que tiene el motor averiado es ayudado por dos remolcadores para entrar en el puerto. Cada uno de ellos tira de él con una fuerza de 10000 N y ambas forman un ángulo de 60o. Calcula el módulo de la fuerza neta que actúa sobre el barco.
Answer:
F_total = 10000 N
Explanation:
For this exercise we use that the force is a vector and the best way to do the sum is that since the two tugs pull the boat with the same intensity and angle, the sum of the component of the force perpendicular to the movement becomes zero.
The components parallel to the movement of the tugs is
∑ F = 2 Fcos θ
let's calculate
F_total = 2 10000 cos 60
F_total = 10000 N
!!!!URGENT!!!! Which of these does not change with the increase in pressure?
A- Changing the number of particles
B- Changing the volume
C- Change the temperature
D- Changing the states of matter.
Answer:
a the number of particles
Explanation:
the volume will decrease because the particles are closer
if the particles are closer they generate more heat and thus can change their state of matter
What is
Magnetism ?
pls help
Answer:
A motion produced by electric charge which causes attractive and repulsive forces between objects.
