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A 280 KN.m couple is applied to a wooden beam, of rectangular cross section 38mm by 90mm ,in a plane forming an angle of 30 degree with the vertical, determine the maximum stress in the beam.
What are the differences between airborne infectious diseases and diseases that are caused by air pollution? Give at least two examples for each category of diseases.
how many pounds of coal must be burned to keep one 100 watt light bulb lit for one hour. Assume efficiency of the power plant is 35%, the transmission losses are 10% fo the delivered poer, and the heating value of coal is 12,000 BTU/lb
Given a type of material used in a wire with diameter (d = 0.25 in) that stretches 2.3 inches while 80 feet of length is under tensile load of 1800 pounds. Find the elastic modulus of the material used to construct the wire.
Assume you are an observer standing at a point along a three-lane roadway. All vehicles in lane 1 are travelling at 30 mi/h, all vehicles in lane 2 are travelling at 45 mi/h, and all vehicles in lane 3 are travelling at 60 mi/h. There is also a const..
What are the inputs needed to determine stress a polymer with a fixed end on one side, and the other with a tension force of 50,000 lbs a year after the load is applied?
The aluminum end and the copper end are maintained at temperatures of 50°C and 260°C, respectively. The thermal conductivities of aluminum and copper are 205 and 385 W/m · K, respectively. The temperature of the aluminum-copper junction in the rod..
The porosity of both media is 0.40, the shape factor for the anthracite is 7.5, and the shape factor for the sand is 6.0. Assume a water temperature of 60 F.
A hazardous waste incinerator is to burn 200 Kg/h of PCB waste that is 30 % PCB and 70 % organic solvents. During testing phase, the concentration of PCB in the emission was recorded as 0.025 g/ m³
From a videotape, it was observed that a player kicked a football 126 {\rm ft} during a measured time of 3 seconds. Determine the initial speed of the ball and the angle(theta) at which it was kicked
it is required to dewater a construction site 80 m by 80 m. the bottom of the construction will be 1.5 m below the
Water flows over a waterfall that is 60m high. Assuming that all of the potential energy of the water at the top of the fall is converted to an increase in internal energy at the bottom of the fall
The drainage area upstream of a small dam is 20 acres. On a certainday the pond was 9 feet deep with a surface area of 1.6 acres. That night, a 5.4 inch rainstorm caused a large rise in the pond.
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