Will mark brainliest jelp ! describe the difference between an element and a compound. enter your answer in the space provided.

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Asher cycles 12 miles in 16 hours. what is his speed?

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