Which of these is the best example of potential energy?

a. a ball rolling across the floor

b. a runner lying on the ground after a race

c. a wind-up toy with the spring tightly wound

d. Jack and Jill at the bottom of their hill

A woman does 260 J of work to move a table 1.9 m across the floor. What is the magnitude of the force applied by the woman to the table if this force is applied in the horizontal direction?

What is the power of a light bulb that has 20 Amps of current and is supplied by a battery of 5 Volts?

The zone along the southern margins of the Sahara is called the A. Laterite. B. Savannah. C. Sahel. D. Veldt.

What is borax made out of

What statement about the salinity of ocean water is true? A.) The salinity of seawater decrease as one moves from the surface to the depths of the ocean. B.) The salinity of surface ocean water does not change from latitude to latitude. C.

Which statement is NOT true? Light travels with or without a medium Light travels faster than sound Sound must have a medium to travel through Both light and sound must have a medium to travel through

When light bends as it enters a different medium the process is known as what?

Work out the kinetic energy of a 2.5 kg remote-controlled car that is moving at 2 m/s.

Suppose a block moves across a rough horizontal surface at constant speed under the action of a horizontal 3-N force. Which statement concerning this situation is not true? a. There is more than the 3-N horizontal force acting on the block. b.

A m = 2.45 kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a F W = 18.9 N horizontal force. Find the magnitude of the tension in the rope and the rope's angle from the vertical.