Which two temperature changes are equivalent?
A) 1 C° = 1 K B) 1 F° = 1 C° C) 1 K = 1 F° D) none of the above
A
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A disk-shaped space station 175 m in diameter spins uniformly about an axis perpendicular to the plane of the disk through its center. How many rpm (rev/min) must this disk make so that the acceleration of all points on its rim is g/2?
What will be an ideal response?
Hydrogen is the major gas in the interstellar medium
Indicate whether the statement is true or false
A sphere is made up of two layers: The first is lead (density 11340
and is of radius R. The second is tin, (7310
and is concentric with the first, from radius R to radius 2R. The sphere is placed in a pool of mercury (density 13600 
How much of the volume of the sphere is below the surface?
A. 68.5% B. 57.5% C. 57.0% D. 64.2%
Synchronous rotation is when a moon's rotation period and orbital period are the same
Indicate whether the statement is true or false