All of the following examples involve chemical energy except: A. working muscles using food b. burning a candle c. lightng a match. d. coasting downhill on a bike

2. Two cars A and B are heading forward. The velocity of A and B are 30 m/s and 20 m/s respectively. If their masses are same as 9.

A rocket, as it clears the launch tower, is 100 m above the ground traveling at a rate of 250 m/s. If it is accelerating at a rate of 27 m/s/s, far will it be from the ground after 20 seconds?

I am starting out as a pilot. What single engine make of airplane should I get (Cheaper to bye one and train than to rent it) ?

An 85-g arrow is fired from a bow whose string exerts an average force of 105 n on the arrow over a distance of 75 cm. what is the speed of the arrow as it leaves the bow?

Explain why the energy in the sun moves out toward the surface

What is a result when the torques on each side of the fulcrum are equal? no motion rotate counterclockwise about the fulcrum rotate clockwise about the fulcrum iIt will teeter clockwise and counterclockwise about the fulcrum

Suppose a 58-turn coil lies in the plane of the page in a uniform magnetic field that is directed out of the page. The coil originally has an area of 0.175 m2. It is stretched to have no area in 0.100 s.

A yummy glazed doughnut is shown above. 1) where is the center of mass of this fantastic culinary delight? in the center of the hole. somewhere inside the solid part of the doughnut the center of mass is not defined in cases where mass is missing.

10. Explain the difference between the short-term effects of concussions and some of the long-term effects that scientists are recently discovering.

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?