What type of heat transfer are involved when you mix hot and cold water (conduction, convection or radiation)?

When objects are charged by they do not need to touch each other. a. friction b. induction c. conduction d. all of these

The slope of a velocity time graph over any interval of time gives the during that interval

(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.)