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A blanking operation is to be performed on 2.0-mm thick cold-rolled steel (half-hard). The part is circular with diameter =75.0 mm. Determine the appropriate punch and die sizes for this operation.
A Charpy V Notch test was conducted for an ASTM A572 Grade 50 bridge steel. the average values of the test results at four different test temperatires were found to be
Assuming a density of 120/ft^3 for masonry brick work, determine the max height of a brick wall if the allowable compressive stress is limited to 150/in^2 and the brick is a) 4" wide b) 6" wide.
What are faecal coliforms and what is the test for them? Why are faecal coliforms used as an indicator of drinking water quality?
The composition of moist air is given on a molar basis to be 78 percent N2, 20 percent O2, and 2 percent water vapor. Determine the mass fractions of the constituents of air.
The water table is at a depth of 1 m. Compute the effective normal stress and the shear stress acting on a plane rotated 60 degrees clockwise from the horizontal at a depth of 2.5 m in this deposit.
1.a rectangular concrete channel is 3 m wide and 2 m high. the water 20 deg celsius in the main channel is 1.5 m deep
A water column in a glass tube is used to measure the pressure in a glass pipe. The tube is 1/4 in. in diameter how much of the water column is due to the surface tention effects
A classroom that normally contains 40 people is to be air conditioned with window air conditioning units of 5 kW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360kJ/h
Neglect friction and the mass of the small end roller and find the initial acceleration of A. Evaluate your result for θ = 30°
The National Institute for Occupational Safety and Health (NIOSH) sets standards for CCl4 in air at 12.6 mg/m^3 of air (a time average over 40 hr). The CCl4 found in a sample is 4800 ppb. Does the sample meet the NIOSH standard
Calculate the precentage of carbon hydrogen and oxygen in ethanoic acid.
A computer technician can handle on average 5 service calls per day. The cost of adding a technician (C1) is $200 per day and the estimated cost of waiting per incident (C2) is $250 per day.
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