How many electrons does an aluminum atom have

1. Pressure is a (n) pusing in all directions.

You are playing catch with a friend in a moving train. When you toss the ball in the direction the train is moving, how does the speed of the ball appear to an observer standing at rest outside the train?

A car moves along a road that has markers every kilometer. Over time, it passes the markers in shorter periods of time. Which best describes the motion of the car? A The car is keeping the same direction. B The car is maintaining the same speed.

If a coil is rotated in a magnetic field at twice the speed - - ie twice the frequency - - the amplitude of the EMF induced in the loop will ... A. remain unchaged B. reduce by half C. double

What does set up transformer do? Set down transform

Explain how the energy of a rubber ball is transformed as it rolls down a ramp.

Which type of friction acts on an object that is not moving? static friction fluid friction sliding friction rolling friction

A substance maintaining a uniform appearance throughout

How much work will it take to lift a 2-kg pair of hiking boots 2 meters off the ground and onto a shelf in your closet? O A. 2.45 J OB. 4J C. 39.2 J D. 20 J

Two cars collide on the parkway. The drivers are following too closely and the driver in the front slows because of traffic to a velocity of 20.0m/s and the driver behind is still moving at 30.