Author Question: What is the ratio of the intensities of two sounds with intensity levels of 70 dB and 40 dB? A) ... (Read 77 times)

cool · **on:** Jul 29, 2018

What is the ratio of the intensities of two sounds with intensity levels of 70 dB and 40 dB?

A) 10:1
B) 100:1
C) 1000:1
D) 10,000:1

Question 2

Three boxes rest side-by-side on a smooth, horizontal floor. Their masses are 5.0 kg, 3.0 kg, and 2.0 kg, with the 3.0-kg mass in the center. A force of 50 N pushes on the 5.0-kg box, which pushes against the other two boxes.

What magnitude force does the 5.0-kg box exert on the 3.0-kg box? A) 0 N
B) 10 N
C) 25 N
D) 40 N
E) 50 N