Awater rocket can reach a speed of 76 m/s in 0.060 seconds from launch.
what is its average acceleration?

(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.)

In a good thermo flask the main cause of heat loss is

If you put a helium-filled balloon in the refrigerator, what will happen?