Does a baseball have large quantum uncertainties, or small ones?
A) Small, because the baseball has such a large mass.
B) Large, because the baseball has such a large mass.
C) Large, because the baseball has such a small mass.
D) Small, because the baseball has such a small mass.
E) It's impossible to tell unless we know how fast the baseball is moving.
A
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Two masses m1 and m2, are separated by a distance r. The forces of attraction between the two masses is F.
a. if m1 is doubled, how does F change? b. if neither of the masses were changed, but r was doubled, how would F change? c. if r was not changed but both masses were doubled, how would F change? d. if r was halved and both masses were doubled, how would F change?
Astrobiology as a field of scientific research, includes contributions from
A) only astronomers and biologists B) biologists with an interest in astronomy C) astronomers with an interest in biology D) many different scientific disciplines
A hockey puck slides across a frozen pond. If ice friction and air resistance are neglected, the force needed to keep the puck sliding at constant velocity is
A) 0 N. B) equal to the weight of the puck. C) the weight of the puck divided by the mass of the puck. D) the mass of the puck multiplied by 10 m/s2. E) none of the above
A wave moves in a rope with a certain wavelength. A second wave is made to move in the same rope with twice the wavelength of the first wave. The frequency of the second wave is _________ times the frequency of the first wave
Fill in the blank(s) with correct word