A wire is designed to ensure that its strain does not exceed 4.0 × 10–4when a force of 8.0kN is applied. The Young modulus of the metal of the wire is 2.1 × 1011Pa. It may be assumed that the wire obeys Hooke’s law. For a force of 8.0kN, calculate, for the wire:a)the maximum stress, (15%)b)the minimum cross-sectional area. (15%

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

What should the power status of a circuit be when measuring resistance with an ohmmeter?

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)