Blood flow is directly proportional to _____ and inversely proportional to ____.

An object is released from rest a height h above the ground. A second object with four times the mass of the first is released from the same height. The potential energy of the second object compared to the first is

A) one-fourth as much. B) one-half as much. C) twice as much. D) four times as much. E) eight times as much.

The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.00-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?

a. 0.025 kg b. 0.049 kg c. 0.051 kg d. 0.081 kg e. 0.037 kg

When water boils, its temperature

a. increases. b. decreases. c. stays constant. d. cannot be determined.

What is the current flowing through the 2-? resistor?

a.
2 A

b.
3 A

c.
4 A

d.
6 A