Acar experiences a 12m/s increase in speed in 22s estimate the acceleration to the nearest tenth of a meter per square second ?

Stage in which a star’s outer layers have started to cool and grow outward?

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures