Author Question: Although perpetual motion is the natural order of things in the universe A) it follows that ... (Read 60 times)

theo · **on:** Jul 29, 2018

Although perpetual motion is the natural order of things in the universe

A) it follows that machines can operate and do work by perpetual motion.
B) no perpetual-motion device that multiplies energy exists.
C) both of these are false statements

Question 2

Suppose that the force of gravity between the sun and Earth suddenly stopped operating. What would happen?

A) Earth would stop in its orbit around the sun, and remain motionless at its present position.
B) Earth would continue orbiting the sun, but objects on Earth would have no weight and would float into space.
C) Earth would fall directly inward, into the sun.
D) Earth would fly directly outward from the sun.
E) Earth would move straight ahead, in a straight line, rather than orbiting the sun.