Consider an a-36 steel (g= 11,000 ksi) shaft made of two solid parts (ab and cd) and one tubular(hollow) part (bc). the solid parts both have a diameter of 10 in. and the tubular part has an outerdiameter of 8 in. and an inner diameter of 7 in. the shaft is supported at both ends by bearings (aand d) such that it can rotate freely, and it is subjected to 40 lb-ft and 40 lb-ft torques as shown infigure. determine the angle of twist of gear b relative to gear c.

c) up is the direction the magnetic force is acting on the charge.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.