If you had something the size of a sugar cube that was made of white dwarf matter, it would weigh
A) as much as a truck.
B) about 5 pounds.
C) as much as the entire Earth.
D) as much as an average person.
A
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Which of the following is the largest object in the asteroid belt?
A) Ceres B) Io C) Titan D) Europa
Uniform Circular Motion: In a carnival ride, passengers stand with their backs against the wall of a cylinder. The cylinder is set into rotation and the floor is lowered away from the passengers, but they remain stuck against the wall of the cylinder. For a cylinder with a 2.0-m radius, what is the minimum speed that the passengers can have so they do not fall if the coefficient of static friction between the passengers and the wall is 0.25?
A. 8.9 m/s B. 2.3 m/s C. 3.0 m/s D. 4.9 m/s E. It depends on the mass of the passengers.
A reflection nebula appears blue because it scatters the ________ light of the stars near it
Fill in the blank(s) with correct word
The critical angle is that angle of incidence for which the angle of refraction equals ______
Fill in the blank(s) with correct word