How is mass conserved in chemical reaction?

The volume of a gas is doubled while the temperature is held constant. How does the gas pressure change? a. It is reduced by one half. b. It does not change. c. It is doubled. d. It varies depending on the type of gas.

Which object would experience the largest force of gravity A train A car A pen The force of gravity is the same for all objects

A sprinter explodes out of the starting block with an acceleration of + 4.2 m/s2, which she sustains for 0.9 s. Then, her acceleration drops to zero for the rest of the race. (a) What is her velocity at t = 0.9 s.

How many foot-pounds of work does it take to throw a baseball 90 mph? a baseball weighs 5 oz, or 0.3125 lb?

How does a vector quantity differ from a scalar? check all that apply. a. vectors have direction. b. vectors have units. c. vectors are bigger. d. vectors are faster.

How do you say scuba dive in spanish

a boy hears the echo of his own voice from a distance hill after 0.8 seconds. If the speed of sound in air is 340m/s, calculate the distance of the hill from the boy.

Which of the following are found in plant cells buh not animal cells?

The diagram shows the field lines near the poles, X and Y, of two magnets Based on the field lines, what are the poles of the magnets? O X: north Y south X: south Y north X north Y north Х Y X south Y south

Why is it safe to watch an eclipse of the Moon but not an eclipse of the Sun