Calculate the electric force that exists between two objects that are 5.0 × 10–2 m apart and carry charges of 2.5 × 10–6 C and –3.2 × 10–6 C. Is this force attractive or repulsive?

What is the length x of the side of the triangle below? (hint: use the cosine function)

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

Sound is a disturbance that travels through a medium as a