The "big bang" was an explosion of material that created galaxies flying away from the center of the explosion
a. True
b. False
Indicate whether the statement is true or false
False
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The energy of a photon:
A) is inversely proportional to the frequency of the light. B) is inversely proportional to the wavelength of the light. C) depends only on the speed of the light. D) depends only on the mass of the photon.
A 30. N stone is dropped from a height of 10. m, and strikes the ground with a velocity of 13. m/s. What average force of air friction acts on it as it falls?
A) 7.2 N B) 2.9 N C) 1.2 N D) 4.1 N E) 0.13 KN
Two capacitors with capacitances of 1.5 ?F and 0.25 ?F, respectively, are connected in parallel. The system is connected to a 40-V battery. What electrical potential energy is stored in the 1.5-?F capacitor?
a. 1.1E–4 J b. 2.0E–4 J c. 1.2E–3 J d. 1.1E–3 J e. 2.0E–3 J
What is the Q value for the following reaction?
7Li + 1p = 4He + 4He (7.016005 ) (1.007825 ) (4.002603 ) (4.002603 ) A) 13.35 MeV B) 13.57 MeV C) 15.37 MeV D) 17.35 MeV E) 17.53 MeV