Compare the normal force exerted on the book by the inclined plane and the weight force exerted on the book by the earth. Are they equal in magnitude?

1. Yes

2. No

3. Their magnitudes cannot be determined

since the forces are not in the same direction.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Could we see a galaxy that is 20 billion light-years away?

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?