If Veronica spins in a circle with the compass in her hand, which force keeps the compass' needle pointing north? A.
an electrical force
B.
a magnetic force
C.
a contact force
D.
a gravitational force

Are hallucinogen a clinically useful drugs?

Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law

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%