Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

What’s #16 asking and how do i solve it?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.