Which equation would you use to find the statistical definition of entropy?

Question

shamim · Answer

i think $$dS=\frac{ dQ }{ dT }$$

anonymous · Answer

Guys help me in this one! It takes Andy 0.50 seconds to lift a 98-newton box from the floor and place it on the table. If he expends a constant power of 137 watts during this time, what is the height of the table?

ivancsc1996 · Answer

Ok, so power is the rate at which work is done. Work is the change in energy of the object. In this case the work done is the energy given to the box as potnetial energy. You just need to solve for h in this equation:$$P=W/t=\Delta E/t=mgh/t \rightarrow h=\frac{ Pt }{ mg }=\frac{ 137W 0.5s}{ 98N }\approx 0.7m$$

ivancsc1996 · Answer

@anna.s214

ivancsc1996 · Answer

The answer is 0.69m

anonymous · Answer

ahh thank you, you were right!