A body of mass 2.0kg and which is rest is subjected to a force of 200N for 0.20 s followed by a force of 400 N for 0.30 s acting in the same direction. Calculate (a)The total impulse on the body and (b) the final speed of the body​

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

(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.)

What sort of waves exhibit the doppler effect?