A solid object floats in water with three-fourths of its volume beneath the surface. What is the object's density? The density of water is 1000 kg/m3
A) 1333 kg/m3
B) 1000 kg/m3
C) 750 kg/m3
D) 250 kg/m3
C
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The motion of a particle connected to a spring is described by x = 10 sin (?t). At what time (in s) is the potential energy equal to the kinetic energy?
A. 0 B. 0.25 C. 0.50 D. 0.79 E. 1.0
Because of their short lifetimes, very few muons that are produced in the upper atmosphere at high speeds should be observed at the surface of the Earth. Yet we detect large numbers of muons at ground level because of the Pauli exclusion principle
a. True b. False Indicate whether the statement is true or false
According to Kepler, the line from the Sun to any planet sweeps out equal areas of space
A) with each complete revolution. B) only when the paths are ellipses. C) in equal time intervals.
Nebular theory predicts that other solar systems that formed in the same way should also have 8 planets
Indicate whether the statement is true or false