Acar slows down from 27.7 m/s to 10.9 m/s in 2.37s. what is the acceleration?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

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.