The brass tube AB (E = 15 × 106 psi) has a cross-sectional area of 0.26 in2 and is fitted with a plug at A. The tube is attached at B to a rigid plate that is itself attached at C to the bottom of an aluminum cylinder (E = 10.4 × 106 psi) with a cross-sectional area of 0.40 in2. The cylinder is then hung from a support at D. To close the cylinder, the plug must move down through 364 in. Determine the force P that must be applied to the cylinder. The force P that must be applied to the cylinder is kips.

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical