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The density of liquid water at 25 C is 997 kg/m3 and the specific gravity of solid water (ice) at 0 C is 0.98. 100 kg of liquid water at 25 C and 50 kg of ice at 0 C are placed in an isolated container. Find: 1. the initial volume of the liquid-ice mixture, in m3, 2. the volume after all the ice is melted, in m3, 3. will the temperature of the liquid water increase or decrease? Why?
How does artificial aging affect KIC in a 7075 alloy? Which is likely to have a higher KIC: 7075-T6 or 7075-T7? Explain.
260-pound weight is supported by two ropes, one forming a 40 degree angle with the ceiling and the other a 50 degree. Find the tension in each rope.
For a normal distribution, find the z score values that separate
a ball is thrown vertically up with a velocity of 91 ftsec at the edge of a 190-ft cliff. calculate a the height h to
(a) Find the angular velocity of link CD and the velocity of the pin relative to the slot in link CD. (b) Find the angular acceleration of link CD and the acceleration of the pin relative to the slot in link CD.
, determine the speed of the boy at the instant = 4 . Neglect the size of the limb. When = 0, = 8 so that and are coincident, i. e., the rope is 16 long.
a 1.5 ton crate is hoisted by three steel wires. each wire is 1/4 in. in diameter and each carries one-third of the load. determine the stress in the wires.
Determine a symbolic expression for the total thermal resistance of wall, including inside and outside convection effects for prescribed conditions.
a steel strut is pinned at both ends. the strut has a solid circular cross section and is 6 m long. the strut
determine the expressions for attractive and repulsive energies, EA and ER as a functions of r where r is in nm and E is in eV.
find: a) the pitch diameter of the pinion. b) the pitch diameter of the gear. c) the output torque of the gear. d) the minimum length of the key used to attach the gear?
How is the mechanical deformation energy defined? How do you calculate the work of fracture of a brittle material?
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