A grandfather clock keeps time using a pendulum whose length is finely adjustable. If you have a grandfather clock that is running fast, should you shorten or lengthen the pendulum?
A. Shorten it
B. Lengthen it
C. You should reduce its mass
D. You should add mass to it
B. Lengthen it
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The positron
a. is an antielectron b. was the first antimatter particle discovered c. is the same as a proton d. all of the above
As frequency is varied in an RLC series circuit, resonance is reached when
A. the voltages VR, VL and VC all become equal. B. the voltages VL and VC become zero. C. the voltage VR becomes equal to the source voltage. D. None of the choices are correct.
A meteorite that is discovered on or in the ground, but not seen to fall, is called a(n) _______________
Fill in the blank(s) with correct word
If you wish to spear a red fish with a red laser beam, you should compensate for refraction and aim your laser
A) directly at the sighted fish. B) above the sighted fish. C) below the sighted fish.