Write chemical equation of the given statements and balance them copper reacts with dil nitric- acid.​

Abug is 12 cm from the center of a turntable that is rotating with a frequency of 45 rev/min . what minimum coefficient friction is required so that the bug stays on the turntable?

What is the rate of change in a objects position?

In the first law of thermodynamics, triangle e=q-w, what does q stand for