over the summer break, jed earns extra cash working as a salesman at sensational sound systems. as one of the most knowledgeable salesmen on staff, jed tells a young couple shopping for a sound system that the more expensive models are worth the money because they

a. amplify sound up to 160 db
b. filter out frequencies below 1 hz
c. boost frequencies below 80 hz
d. buffer sounds that reach 60 db

Aballet student who learns with the of his instructor is demonstrating learning.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.