State the work-energy principle

What will be an ideal response?


The net work done on an object is equal to the change in the object's kinetic energy.

Physics & Space Science

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Which is not an example of approximate simple harmonic motion?

a. A ball bouncing on the floor. b. A child swinging on a swing. c. A piano string that has been struck. d. A car's radio antenna as it waves back and forth.

Physics & Space Science

A pool ball moving at 3 m/s collides head-on with an identical pool ball that's initially at rest. Just after the collision, the second ball moves away at 2 m/s while the first ball

A) moves at 3 m/s in a direction opposite to the second ball. B) continues moving at 3 m/s in the same direction. C) is at rest. D) moves at 1 m/s in the same direction as the second ball. E) moves at 1 m/s in a direction opposite to the second ball.

Physics & Space Science

Identical point charges (+50 ?C) are placed at the corners of a square with sides of 2.0-m length. How much external energy is required to bring a fifth identical charge from infinity to the geometric center of the square?

a. 41 J b. 16 J c. 64 J d. 10 J e. 80 J

Physics & Space Science

A 120-V rms voltage at 60.0 Hz is applied across an inductor, capacitor and a 100-? resistor in series. If the maximum value of the current in this circuit is 1.60 A, what is the rms value of the current in this circuit?

A) 1.60 A B) 2.66 A C) 1.82 A D) 2.26 A E) 1.13 A

Physics & Space Science