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3 years ago

Witch of the following is the best exsample of potential energy

Physics

2 answers:

11Alexandr11 [23.1K]3 years ago

8 0

An object or living organism that is stationary(not moving) for example the car is stopped at the top of the hill

bearhunter [10]3 years ago

5 0

A water slid.

This is because you use energy to climb up the water slid, then once your up there you have the potential to use gravitational energy. Once you head down the slid you are using kinetic energy. Once you hit the bottom there is a splash that also used kinetic energy.

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What does relative humidity measure?

FromTheMoon [43]

Answer:

It is D

Explanation:

edge unit test review thing

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3 years ago

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Realizing that she often doesn't have her students' full attention during class, a professor devises an elaborate device on whic

kakasveta [241]

Answer:

i assume the system is in equilibrium

Explanation:

(W_p-T)(2)+W_b(2.5)= T(sin 45 degrees)(5)

T(((sin 45 degrees)(5)) + 2) = (W_p)(2) + W_b(2.5)= T(5.5355)

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3 years ago

A 2kg ball rotates on the end of a 1.4m long string. The ball makes 5 revolutions in 4.4s. What is the speed of the ball?

nlexa [21]

The speed or the linear velocity of the stone is 9.93 m/s; option C

<h3>What is the speed or linear velocity of the stone?</h3>

The linear velocity of the stone is given by the formula below:

v = wr

where w is angular velocity and r is radius.

w = θ/t

1 complete revolution = 2π radians

5 revolutions = 10π radians

w = 10π/4.4 rad/s

v = 10π/4.4 rad/s * 1.4

v = 9.93 m/s

In conclusion, the linear velocity is obtained from the angular velocity and radius of the string.

Learn more about linear and angular velocity at: brainly.com/question/15154527

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3 0

2 years ago

Which is true of a step-down transformer but not a step-up transformer? The core is made of copper and the coils are made of iro

Agata [3.3K]

The primary winding has more coils than the secondary winding

Explanation:

A transformer is a device consisting of two coils (called primary and secondary coil) wrapped around a soft iron core. As the primary coil is connected to alternate voltage, a variable magnetic field inside the iron core is produced; the lines of this field cut also the secondary coil, and due to the phenomenon of electromagnetic induction, an e.m.f is produced in the secondary coil (so, an alternate voltage).

The voltages in the two coils are related by the transformer equation:

$\frac{V_1}{V_2}=\frac{N_1}{N_2}$ (1)

where

$V_1$ is the voltage in the primary coil

$V_2$ is the voltage in the secondary coil

$N_1$ is the number of turns in the primary coil

$N_2$ is the number of turns in the secondary coil

In a step-down transformer, the voltage in the secondary coil is lower than the voltage in the primary coil (they are used to decrease the voltage in input), therefore:

$\frac{V_1}{V_2}>1$