Ultraviolet light from the sun can a. damage nerve cells but not skin cells. b. damage molecules in skin cells, such as dna. c. cause skin cells to release stinging chemicals. d. skin cells to repair dna faster.

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%

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Compare and contrast the bohr model and the electron cloud models of the atom.