Which of the following correctly compares the Sun's energy generation process to the energy generation process in human-built nuclear power plants?
A) The Sun generates energy by fusing small nuclei into larger ones, while our power plants generate energy by the fission (splitting) of large nuclei.
B) Both processes involve nuclear fusion, but the Sun fuses hydrogen while nuclear power plants fuse uranium.
C) The Sun generates energy through nuclear reactions while nuclear power plants generate energy through chemical reactions.
D) The Sun generates energy through fission while nuclear power plants generate energy through fusion.
A
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Who discovered Neptune in the late 19th century?
a. Galileo b. Herschel c. Galle d. Le Verrier and Adams e. Tombaugh and Lowell
In a single-slit diffraction experiment, a beam of monochromatic light of wavelength 630 nm is incident on a slit of width 0.400 mm. If the distance between the slit and the screen is 1.80 m, what are the positions of the first dark fringes?
A) 0.440 × 10-3 m B) 0.870 × 10-3 m C) 1.30 × 10-3 m D) 1.65 × 10-3 m E) 2.84 × 10-3 m
Which space mission orbited Jupiter and dropped a probe into Jupiter's atmosphere?
a. Pioneer b. Voyager c. Galileo d. Cassini e. New Horizons
A mouse is running away from a cat at 0.75 m/s and, at 1.25 m from his mouse hole, he accelerates at a constant rate of 0.25 
until he reaches his hole safely. How long a time was required for him to cover the last 1.25 m?
A. 1.4 s B. 1.7 s C. 1.2 s D. 10 s