An ideal diode in an ac circuit
A. doubles the current.
B. halves the current.
C. permits the current to flow in only one direction.
D. permits the current to flow in one direction and double the current to flow in the other.
E. permits the current to flow in one direction and half the current to flow in the other.
C. permits the current to flow in only one direction.
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Increasing the speed of waves on a guitar string increases the _________ of the sound it produces
Fill in the blank(s) with correct word
A wire in a uniform magnetic field of 0.350 T carries a current of 3.50 A. If the magnitude of the magnetic force per unit length on the wire is 0.278 N/m, what is the angle between the magnetic field and the current?
a. 13.1° b. 19.9° c. 4.56° d. 52.6°
Free Fall: Ball A is dropped from the top of a building. One second later, ball B is dropped from the same building. Neglect air resistance. As time progresses, the difference in their speeds
A. increases. B. remains constant. C. decreases. D. cannot be determined from the information given.
What is the underlying physical idea behind the operation of the electron microscope?
A) Radiation has a particle-like behavior--i.e., it acts like it is made of particles. B) the moon behaves as though it is made of cotton candy. C) Matter has a wave-like behavior. D) Matter has a particle-like behavior. E) Radiation has a wave-like behavior.