Find the resistance of a fiber with a cross-sectional area of 1.40 and length of 9 that is subjected to a voltage of 245 for which the current density is 1.30 . Assume the resistor is uniform in material and properties.(Enter your answer to three significant figures.)

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

What is the speed of an object at a given moment?

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig