the 4m long bar below starts from rest and rotates through 5 revolutions with a constant angular acceleration of 30 radians per second squared? how long did it take to make 5 revolutions?​

The reaction q+r2=r2q is found to be first order in r2 and

Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?