Which law best describes this statement? Earth moves faster in the winter when it's closest to the sun.
A. Newton's law of gravity
B. Kepler's law of orbits
C. Kepler's law of areas
D. Kepler's law of periods

Which changes of state do the labels represent? a: b: c:

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)