The relaxed length of a vertical spring is 4.22 m. When a 5 kg object is attached to the end of the spring, the vertical length of the spring is 5.72 m and the object is found to be 10. m from the ground. Calculate using significant figures. a) X = m

b) The spring constant K = N/m

c) The elastic potential energy PEe = J

d) The gravitational potential energy PEG = J

e) Given that formula to calculate the total potential energy of the system is PETOTAL = PEG + PEe, calculate the PETOTAL = J

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

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