Four equal-magnitude point charges (3.0uc) are placed at the corners of a square that is 40cm on a side. Two, diagonally opposite each other, are positive, and the other two are negative. find the force on either negative charge

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

Which type of basaltic lava flow has a fairly smooth

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?