Author Question: An electric generating plant produces 400 MW of electric power while operating at 40 efficiency. The ... (Read 106 times)

Destiiny22 · **on:** Jul 29, 2018

An electric generating plant produces 400 MW of electric power while operating at 40 efficiency. The rate at which this plant consumes energy in the form of the thermal energy obtained by burning the coal that is fed into the plant is

A) 160 MW. B) 600 MW. C) 240 MW. D) 1000 MW. E) 1400 MW.

Question 2

An ideal massless spring with a spring constant of 2.00 N/m is attached to an object of 75.0 g. The system has a small amount of damping. If the amplitude of the oscillations decreases from 10.0 mm to 5.00 mm in 15.

0 s, what is the magnitude of the damping constant b? A) 0.00693 kg/s
B) 0.0462 kg/s
C) 0.00762 kg/s
D) 0.0100 kg/s
E) 0.00857 kg/s