In which situation is an object accelerating? a. a rock has a constant velocity of 0 m/s. b. a motorcycle is parked on the side of the street. c. a leaf's velocity remains 1 m/s as it falls from a tree. d. a bicyclist's velocity changes from 2 m/s to 5 m/s as she travels down the street.

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

List the path of the respiratory system

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?