Helen is driving her car if the kinetic energy of the car is 8.10 e4 j and the mass of the car and its contents is 1010 kg helen is driving at a speed of
1.26 m/s
9.01 m/s
12.0m/s
12.6m/s
81.1m/s

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Select the correct answer. what does the process of natural selection involve?