A 38.5 kg man is in an elevator accelerating downward. A normal force of 343 N pushes up on him. What is the acceleration? [?] m/s^2

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

The density of glycerin is 1.26grams/centimeter cubed . how many is this? use the conversion rates of and . express your answer to the correct number of significant figures.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of