A nutritionist in the United States measures food energy in units of
A) kilocalories.
B) Calories.
C) both are the same
D) neither of the above
Answer: C
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Structure 1 with member BC of length L/2 has force P1 applied at joint C. Structure 2 with member BC of length L has force P2 applied at C. Both structures have constant flexural rigidity EI. If the ratio of the applied forces P1/P2 5 5/2, the ratio of the joint B rotations ?B1/?B2 is approximately:
(A) 1
(B) 5/4
(C) 3/2
(D) 2
You are holding a finishing sander with your right hand. The sander has a flywheel which spins counterclockwise as seen from behind the handle. You are sanding a wall in front of you
As you turn the sander towards the right, you feel a tendency in the sander to A) turn towards the left. B) turn upward. C) turn downward. D) push toward you. E) pull away from you.
A frequency of one hundred ________ means the wave is vibrating one hundred million times per second; this is a typical carrier frequency for FM (frequency modulation) radio
A) gigahertz B) millihertz C) megahertz D) hertz E) kilohertz
A material is optically active if it:
a. absorbs light passing through it. b. transmits all light passing through it. c. exhibits interference. d. rotates the plane of polarization of the light passing through it.