Work is being done in which of these situations? all motions are at a constant velocity (including velocity = zero).
a. jessica pushes a 25 kilogram cart a distance of 10 meters.
b. bane carries a 20 kilogram box a distance of 50 meters.
c.
a weightlifter holds a 100 kilogram barbell over his head.
d.
all is trying to push a truck away from the parking lot.
e.
yana carries a 5 kilogram bag a distance of 1 kilometer.
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High schoolphysics 5+3 pts a neon light consists of a glass tube with metal wires at each end. when connected to a high-voltage source, the gas glows. if a fly lands on the glass tube, what will most likely happen? a) the fly will not feel a shock because the glass conducts any free electrons back into the gas. b) electrons will flow directly from the metal wires along the glass and shock the fly. c) the fly will not feel a shock because the glass insulates it from the electrons in the gas and the metal. d) electrons that are moving through the gas will be conducted through the glass and shock the fly.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.