A copper tube with circular cross section has length L 5 1.25 m, thickness t 5 2 mm, and shear modulus of elasticity G 5 45 GPa. The bar is designed to carry a 300 N m? torque acting at the ends. If the allowable shear stress is 25 MPa and the allowable angle of twist between the ends is 2.58, what is the minimum required outer diameter d?

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

Prove the equivalence between the two statements of the 2nd law of thermodynamics (i.e., a violation of one statement leads to the violatio the other statement)