Aweather balloon contains 12.0 m3 of hydrogen gas when it is released from a location at which the temperature is 22°c and the pressure is 101 kpa. it rises to a location where the temperature is -30°c and the pressure is 20 kpa. if the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon?

What is the momentum of a 2 kg object moving at 15 meters per second

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?