The charge on the proton is the same as
A) the charge on the neutron.
B) the charge on the neutron, but of the opposite sign.
C) the charge on the atom.
D) the charge on the electron.
E) the charge on the electron, but of the opposite sign.
E
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Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. If the third-order maximum of the diffraction pattern is observed at 32° from the centerline, what is the distance between the slits of the grating?
A) 0.93 ?m B) 1.4 ?m C) 2.8 ?m D) 8.5 ?m
About how many potentially hazardous asteroids pass within 0.05 AU of the Earth per decade in modern times?
A) None B) 10-20 C) 200-300 D) 5000-1000 E) A completely unknown quantity; it could easily be anywhere from just a few to millions.
Object 1 has twice the mass of Object 2 . Both objects have the same kinetic energy. Which of the following statements is true?
a. Both objects can have the same magnitude of momentum. b. Object 1 has a momentum of greater magnitude than Object 2. c. The magnitude of the momentum of Object 2 is four times that of Object 1. d. All the statements are false.
Double-lobed radio galaxies are____
a. spiral galaxies with unusually luminous nuclei b. elliptical galaxies with very broad emission lines c. explained by the double-exhaust model d. extremely luminous objects with high redshifts e. glowing green gases due to excitation from energy from an active core