Nuclear fusion creates
A) radiant energy.
B) thermal energy.
C) both thermal and radiant energy.
D) nuclear energy.
E) all types of energy.
C
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The Chandra X-ray telescope must use:
A) a lens of fluorite. B) grazing incidence optics to focus the short wavelengths. C) a Newtonian reflecting design to avoid chromatic aberration. D) X-ray film instead of CCDs for imaging. E) a Schmidt corrector plate to avoid spherical aberration.
Newton's second law states: sum of forces = mass × acceleration. According to this, what property can you determine if you observe the acceleration of an object with a known mass?
A) the value of a single force acting on the object B) the current location of the object C) the current velocity of the object. D) the sum total of all forces acting on the object
Earth's primary atmosphere was probably mostly ____________, ____________, and ______________
Fill in the blank(s) with correct word
By locating the north celestial pole (NCP) in the sky, how can you determine your latitude?
A) The altitude of the NCP is your angular distance from the North Pole. B) The direction of the NCP is the angular distance from the North Pole. C) The direction of the NCP is the same as your latitude. D) The altitude of the NCP is the same as your distance from the North Pole. E) The altitude of the NCP is the same as your latitude.