Where does the energy come from that your body uses to keep you alive?
A) It comes from the foods you eat.
B) It is produced from the radiative energy of the Sun on your skin.
C) It is created during the time that you rest or sleep.
D) It comes from the water you drink.
E) It is in the air that you breathe.
A
You might also like to view...
An adiabatic free expansion of a gas in a thermally isolated container is not reversible because
A. work must be done on the gas to return it to its original volume. B. heat must be exchanged with the surroundings to return the gas to its original temperature. C. its internal energy has a greater value after the expanded gas is returned to its original volume and temperature. D. of all of the above. E. of (a) and (b) above only.
A girl is standing in front of a concave mirror. Consider two rays of light, one from her nose and one from her mouth that are parallel as they are traveling toward the mirror. These rays will come together
a. at the focal point. b. at the center of curvature. c. at the image point. d. behind the mirror if she is too close to the mirror.
What is the direction at point P2?
A. A B. B C. C D. D E. zero F. other G. AA H. BB I. CC J. DD
Which of the following types of stars are suitable for advanced life?
A) A-type B) F-type C) O-type D) K-type