Author Question: A 15.0-m rope is pulled taut with a tension of 140 N. It takes 0.545 s for a wave to propagate along ... (Read 11 times)

kellyjaisingh · **on:** Jul 29, 2018

A 15.0-m rope is pulled taut with a tension of 140 N. It takes 0.545 s for a wave to propagate along the rope. What is the mass of the rope?

A) 1.67 kg
B) 2.10 kg
C) 2.77 kg
D) 5.09 kg
E) 3.19 kg

Question 2

The energy density of an electromagnetic wave is

A) entirely in the electric field.
B) entirely in the magnetic field.
C) 1/4 in the electric field and 3/4 in the magnetic field.
D) 1/4 in the magnetic field and 3/4 in the electric field.
E) equally divided between the magnetic and the electric fields.