how important is knowing and understanding the nature of the tasks and the function of a tool to successfully accomplish a specific task?​

What are atoms of the same element with varying number of neutrons

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

The force it would take to accelerate an 900-kg car at the rate of 6m/s2