Explqin how energy is different from work

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Ain is , is 's of ? 0.62 0.79 1.27 1.50

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