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A 5-kg object is given a displacement r = -4 m i + 1 m j - 3 m k along a straight line. During the displacement, a constant force F = 4 N i - 4 N j + 2 N k acts on the object. Find the work done by F for this displacement.
A steel rod 1 cm in diameter and 30 cm long protrudes from a steel surface at 150 C. The rod is surrounded by air at 10 C with a convective heat transfer coefficient of 10 W/m2 C. The thermal conductivity of steel is 114 W/m C. Determine the heat ..
A reversible heat engine operates between 875 K and 310 K and drives a reversible refrigerator operating between 310 K and 225 K. the engine receives 2000 kJ of heat and the net work output from the arrangement equals 350 kJ. make calculations for..
Knowing that the gage pressure inside the tank is 5 MPa, determine the maximum stress and the maximum shearing stress at point L.
a circular sheet metal duct carries refrigerated air to a cold storage room for apples. the duct itself is 200 mm in
Longitudinal versus Transverse Vibrations in a bar, A 48 inch long by 2 inch diameter round steel rod (E=30e6 psi, density=0.28 lb/in3) is fixed at one end and free at the other. If the rod is struck transversely so that there is both a longitudin..
a constant-thickness plate specimen of width w and thickness t containing a crack has a compliance c given byc a1 a2
Consider a 70-kg woman who has a total foot imprint area of 400 cm2. She wishes to walk on the snow, but the snow cannot withstand pressures greater than 0.5 kPa. Determine the minimum size of the snow shoes needed.
a potato is baked in an oven at 200degc. the potato is then removed from the oven and put on a table in the kitchen.
Design the pump power and the diameter of brunching pipes D1, D2, D3, so that the flow rate coming into all buildings are Q1=Q2=Q3=4.5m^3/hr, when all four valves v, V1, V2, V3 are open.
State what the joints are in the system and knowledge of computational kinematics explain what you believe is the procedure to calculate each variable.
a tensile force of 4200 lbs is applied to a 9 feet long 8515 brass rod. an elongation of 0.36 inch is measured on the
measuring fracture toughnessthe aim of this demonstration is to use measurements of the load required to propagate a
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