Newton's rings illustrate
A) refraction.
B) reflection.
C) dispersion.
D) polarization.
E) interference.
Answer: E
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Every second at Niagara Falls, some 5 000 m3 of water falls a distance of 50 m. What is the increase in entropy per second due to the falling water? (Assume a 20°C environment)
The siphon shown is used to transfer liquid from a higher level to a lower level. If the fluid is drawn up and is continuous through the tube, determine the velocity of flow of gasoline if the vertical distance from the liquid surface to the outlet is 1.0 m.
A. 1.1 m/s B. 2.2 m/s C. 4.4 m/s D. 9.8 m/s E. 6.5 m/s
A circuit consists of 2N resistors, all of resistance R, connected as shown below. A potential difference V is applied to one end, and the other end is at ground potential. The equivalent resistance of the circuit is
A.
.B.
C.
.D.
E.
An ideal transformer is one that:
a. has an output frequency of 60 Hz. c. experiences no power loss. b. has a turn ratio, N2/N1, equal to 1. d. works with direct current.