Lets say a train is traveling at a certain velocity v emitting a certain frequency f. will the inrease in frequency as heard by someone in front of the train be equal to the decrease in frequency as heard by someone from behind the train? explain and or prove your answer.

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

Which governments provide garbage collection services to homes and businesses

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)