Energy in Nuclear Reactions: Consider the nuclear reaction: 7Li + 1p ? 4He + 4He. The known atomic masses are7Li: 7.016005 uHe: 4.002603 u1p: 1.007825 uWhat is the Q-value (or reaction energy) of this reaction? (1 u = 931.5 MeV/c2)

A. 13.57 MeV
B. 15.37 MeV
C. 17.35 MeV
D. 17.53 MeV


Answer: C

Physics & Space Science

You might also like to view...

Which of the following statements about the atomic theory of matter is true?

Einstein helped prove the atomic theory by explaining x-ray production in 1905. The atomic theory of matter was universally accepted at the end of the nineteenth century. Proust put forth the law of definite masses, saying that a compound is made up of numbers of atoms so that the total of each element has equal mass. Dalton proposed that atoms of each element have characteristic properties. Atoms were originally thought of as particles, but the work of Dalton and Brown helped prove that atoms were waves.

Physics & Space Science

Sound waves are part of the Electromagnetic spectrum.

a. true b. false

Physics & Space Science

A planet is discovered at a distance of 1 AU from its parent star with a period of 1 year. How does the star's mass compare to our Sun's?

A. The star's mass is around 4 times smaller than the Sun's. B. The star's mass is around 2 times smaller than the Sun's. C. The star's mass is around 2 times larger than the Sun's. D. The star's mass is around 4 times larger than the Sun's. E. The star has the same mass as the Sun.

Physics & Space Science

Of all the planets known in antiquity, ________ is the hardest to observe visually

Fill in the blank(s) with correct word

Physics & Space Science