The capture of too few solar neutrinos by Davis in the solar neutrino experiment
a. has been disproved by the results of later experiments.
b. can be explained if the sun is not undergoing thermonuclear fusion of hydrogen in its core.
c. indicates that the sun's core is much hotter than expected.
d. indicates that the sun's core is convective.
e. none of the above
E
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Monochromatic light from a He-Ne laser (? = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first-order maximum
a. 18.4° b. 39.2° c. 14.6° d. 27.7° e. 13.9°
At the end of 2 seconds an apple freely falling from rest has a speed of
A) 1 m/s. B) 5 m/s. C) 10 m/s. D) more than 10 m/s.
Projectile Motion: A projectile is fired from ground level on a horizontal plain. If the initial speed of the projectile is now doubled, and we neglect air resistance,
A. its range will be increased by 
.
B. its range will double.
C. its range will be decreased by a factor of two.
D. its range will quadruple.
E. its range will decrease by a factor of four.
Why does a July day in the Gulf of Mexico generally feel appreciably hotter than a July day in Arizona?
What will be an ideal response?