Alittle boy pushes a wagon with his dog in it. the mass of the dog and wagon together is 45kg. the wagon accelerates at 0.85 m/s^2. what force is the boy pulling with?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

70 give a real life example showing how sensory neurons work with the motor neurons