Ahelium-filled balloon occupies a volume of 15 cubic meters at sea level. the balloon is released and raises to a point in the atmosphere where the pressure is .75 atm. what is its volume if the temperature remains the same?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Frequency of electromagnetic waves that a radio station is assigned is called

An impulse is the product of the on an object and time during which it is applied