A guitar amplifier during a solo at a rock concert produces sound with a power of 40 W. Assume that the sound waves emit and spread spherically. A) What is the intensity of the sound waves as they reach a fan in the front row 16 meters from the amplifier?

B) What about in the back, 53 meters away?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Diamond will scratch quartz. true or false

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.