2
2.3.2 Quiz: Work and Power
Question 1 of 10
2 Points
A boy performs 100 J of work pushing a chair a distance of 4 m. How much
force does the boy use? Assume there is no friction
O A. 200 N
O B. 400 N
O C. 100 N
Oo
O D. 25 N
SUBMIT

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?