Daytime high temperatures generally occur:
What will be an ideal response?
about 3:00 p.m.
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Charge Q is distributed uniformly along a semicircle of radius a. Which formula below gives the correct magnitude of the force on a particle of charge q located at the center of the circle?
A.
.B.
.C.
.D.
.E.
.Alpha Centauri A and B have an average orbital separation of about 23 AU and a period of about 80 years. Approximately what is the sum of their masses? If we presume that Alpha Centauri A is a star like our Sun, what is Alpha Centauri B's mass?
What will be an ideal response?
If y = 0.02 sin (30x ? 400t) (SI units) and if the mass density of the string on which the wave propagates is 0.005 kg/m, then the transmitted power is
a. 1.03 W. b. 2.13 W. c. 4.84 W. d. 5.54 W. e. 106 W.
According to Einstein's special theory of relativity, when compared to an identical clock at rest, a clock moving with constant velocity will run
(a) Slow (b) Fast (c) At the same rate (d) Alternately fast and slow