You drop the box. As it falls to its original level, its kinetic energy is 100 J
Indicate whether the statement is true or false
T
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The gamma radiation first classified by Rutherford was in fact which of the following?
a. helium nuclei b. high energy quanta c. electrons d. positrons
Spherical Mirrors: When an object is 12 cm in front of a concave mirror, the image is 3.0 cm in front of the mirror? What is the focal length of the mirror?
A. -0.25 cm B. 15 cm C. 4.0 cm D. 2.4 cm E. -1.3 cm
According to the theory of cosmic inflation, at what time in the history of the universe did inflation occur?
A) at the very beginning of the big bang B) at the time that the cosmic background radiation formed C) around the third or fourth minute D) around the third or fourth second E) at a tiny fraction of the first second, but not quite at the very beginning of the big bang
Find the binding energy (in MeV) of carbon-12. Assume: mC = 12.000 000 u m p = 1.007 825 u m n = 1.008 665 u u = 1.66 × 10^-27 kg
a. 14.8 b. 0.511 c. 9.11 d. 92.3 e. 46.2