The force that holds the nucleus together is
A. gravitational force.
B. electromagnetic force.
C. weak interaction.
D. strong nuclear force.
D. strong nuclear force.
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The mass of 1H is 1.007825 u and the mass of 1n is 1.008665 u. The mass of 12C is 12.000000 u, of 13N is 13.005739 u, and of 14N is 14.003074 u. What is the binding energy of the last proton in 13N?
A) 2.5 MeV B) 1.9 MeV C) 9.8 MeV D) 10.6 MeV E) 3.8 MeV
Which of following statements about the image formed by a single diverging lens are true? (There could be more than one correct choice.)
A) The image is always real. B) The image is always virtual. C) The image is always inverted. D) The image is always upright. E) The image is always smaller than the object.
Stefan's law notes that total energy radiated is proportional to the ________ power of the temperature of the blackbody
Fill in the blank(s) with correct word
An ice skater performs a pirouette (a fast spin) by pulling in his outstretched arms close to his body. What happens to his angular momentum about the axis of rotation?
A) It does not change. B) It increases. C) It changes, but it is impossible to tell which way. D) It decreases.