Chan hee is inflating a basketball using an air pump. he notices that the pump gets warm as he uses it. what is a good hypothesis that could lead to new experimentation?

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?