A sledgehammer with a mass of 10 kg is used to drive a spike into wood. The spike has a
mass of 1 kg. The blow from the sledgehammer exrts a force of 1000 N downward on the
spike.
What force does the spike exert upward on
the sledgehammer?

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?