Ashear force of 400 n is applied to one face of an aluminum cube with sides of 30 cm. what is the resulting relative displacement? (the shear modulus for aluminum is 2.5 x 1010n/m2).

a) 4.4 x 10-8 m
b) 8.2 x 10-8 m
c) 1.9 x 10-8 m
d) 5.3 x 10-8 m

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