Author Question: During each cycle, a thermodynamic engine takes in 4.0 J of energy, does 1.0 J of work, and expels ... (Read 96 times)

eruditmonkey@yahoo.com · **on:** Jul 29, 2018

During each cycle, a thermodynamic engine takes in 4.0 J of energy, does 1.0 J of work, and expels 3.0 J of energy. What is its efficiency?

What will be an ideal response?

Question 2

A 10-gram wire that is 6.0 m long is under tension. When a transverse wave of frequency 280 Hz travels along the wire, its wavelength is 0.60 m, and its amplitude is 8.4 mm.

How much time does it take for a crest of the transverse wave to travel the length of the wire? A) 36 ms
B) 31 ms
C) 40 ms
D) 44 ms
E) 49 ms