The 60° strain rosette is mounted on the surface of the bracket. the following readings are obtained for each gage: pa = -780(10-6), pb = 400(10-6), and pc = 500(10-6). determine (a) the principal strains and (b) the maximum in-plane shear strain and associated average normal strain. in each case show the deformed element due to these strains

How are calculation for velocity and speed different

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

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !