Asimple harmonic oscillator oscillates with frequency f when its amplitude is a. if the amplitude is now doubled to 2a, what is the new frequency?
a) 2f
b) 4f
c) f
d) f/2
e) f/4

What is a good example of instantaneous speed

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.

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices