If the height of an object is doubled, the potential energy will

What is the unit of measurement for power? A. m/s2 B. watts C. joules D. newtons

Which of the following statements is true about light? A. Light needs a medium through which to travel B. Light can not be diffracted around objects C. Light can travel through the vacuum of space D. Light moves slower than sound

Match the wave motion with the correct seismic wave. P wave S wave Surface wave A. motion that involves compression and expansion of the material through which it passes; may pass through solids, liquids, and gases B.

A 49 kg skier skis directly down a frictionless slope angled at 13° to the horizontal. Choose the positive direction of the x axis to be downhill along the slope. A wind force with component Fx acts on the skier.

A car begins at rest at a stop light. when the light turns green, the car accelerates to a speed of 36.3 m/s after 3.5 seconds. what is the car's acceleration away from the stop light?

Between a substance and a mixture.

Two massive objects are fixed in position. A third object is placeddirectly between the first two at the position at which the totalgravitational force on the third object due to the two massiveobjects is zero.

Which statement best describes the magnetic properties of a material? Magnetic materials have many spinning, unpaired electrons Paired electrons of magnetic materials can move to other atoms Electrons of magnetic materials are strongly held by

when we examine the structures of the other terrestrial planets in our solar system, we see that their structure is similar to Earth's. Why do you think this is the case?

An ant is crawling along a straight wire, which we shall call the x axis, from A to B to C to D