Which of the following best illustrates chemical potential energy?
answers:
a skydiver about to jump out of a plane
a dog playing fetch
gasoline in a gas tank
water moving down a hill

Tungsten-filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?