X-rays with an energy of 400 keV undergo Compton scattering from a target. The scattered rays are deflected at an angle of 38° relative to the direction of the incident rays.What is the energy of the scattered x-rays?
a. 343 keV
b. 300 keV
c. 400 keV
d. 2410 keV
a
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If you could convert the entire mass of the Sun (mass 2 x 1033g) into pure energy, how much energy would be produced (in ergs) ? The speed of light c = 3 x 1010cm/s.
A. 2 x 1033ergs B. 1.8 x 1054ergs C. 6 x 10133ergs D. 1 x 1051ergs E. 6 x 1043ergs
The area under a graph of vx vs. t from t = ti to t = tf represents
A.
B.
C.
D.
(xi + xf).E.
The Ptolemaic model of the universe was heliocentric
a. True b. False Indicate whether the statement is true or false
Jupiter's "striped" appearance is a result of
A) alternating bands of rising and falling air at different latitudes. B) alternating bands of liquid and gaseous material at different latitudes. C) changes in the atmospheric composition with latitude. D) changes in the strength of Jupiter's magnetic field with latitude.