Asurface receiving sound is moved from its original position to a position three times farther away from the source of the sound. the intensity of the received sound thus becomes
a. three times as low.
b. three times as high.
c. nine times as low.
d. nine times as high.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Use the information presented in the graph to answer the questions. which segments show acceleration? which segment indicates that the object is slowing down? what is the velocity of segment b? what is the acceleration of segment b?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?