The bluer the light, the ____ each photon contains
a. more energy
b. less energy
c. less speed
d. more speed
e. none of the above
a
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Radiation Doses: A 70-kg researcher absorbs 4.5 × 108 neutrons in a work day, each of energy 1.2 MeV. The relative biological effectiveness (RBE) for these neutrons is 10. What is the equivalent dosage of the radiation exposure for this researcher, in millirem?
A. 1.2 mrem B. 0.39 mrem C. 0.77 mrem D. 3.7 mrem E. 12 mrem
The primary purpose of an astronomical telescope is to magnify the images of distant objects, making them appear closer
Indicate whether the statement is true or false
Refraction occurs for both sound and light. When refraction occurs there is a change in
1) frequency. 2) wavelength. 3) speed. 4) all of the above. When sound travels faster near the ground than above, bending of sound tends to be 5) upward. 6) downward. 7) neither of these.
Which of the following is the best definition of inertial frame?
A. a frame of reference in which Newtonian mechanics holds true, but relativistic mechanics does not B. a frame of reference in which relativistic mechanics holds true, but Newtonian mechanics does not C. a frame of reference where there are no accelerations without applied forces D. a frame of reverence in which Newton's second and third laws hold, but not his first E. None of these choices are correct.