18) Wnet = AEK = Ekr-Eki
When a net force does work on an object, then there is always a change in
A)
position.
B)
distance.
0
kinetic energy.
D)
net forces acting on the object.

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

Place me with this question is my last question

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules