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A 1000 candela light source emits a beam of light. The source is held exactly 4 ft above a moveable surface. The surface can be sloped at angles in 10° intervals in the range of 0° to 90°, measured from horizontal. Determine the luminous intensity, in foot-candles, on the surface at each angle.
Compute the shear buckling coefficient for a long, simply-supported, rectangular plate.
a carnot heat engine receives 90 kj from a reservoir at 627 . it rejects heat to the environment at 27 . one-fifth of
A work piece is being cut at 76m/min (250 fpm), and the power is found to be 2.0 kW (2.7hp). The feed is .25 mm/rev (.010 in/rev) and the depth of cut is 5.0 mm (.200 in) What is the cutting force in Newtons (pounds)?
A motor gives gear A an angular acceleration of aA = (2t3) rad> s2, where t is in seconds. If this gear is initially turning at vA = 15 rad> s, determine the angular velocity of gear B when t = 3 s.
What is the minimum thickness of an alumina-silica insulation (kins = 0.125 W/m · K) needed to meet the outlet requirement under worst case conditions for which the duct is exposed to ambient air at Too = 250 K and a cross-flow velocity of V = 15 ..
Suppose you have data such as in the Shirt Orders database. How could this data be stored in an Excel file? Would anything be lost? In general, what is the advantage of storing such data in a database package such as Access rather than in Excel?
The boom OA carries a load P and is supported by two cables as shown. Knowing that the tension is 510 N in cable AB and 765 N in cable AC, determine the magnitude and direction of the resultant of the forces exerted at A by the two cables.
Determine the formula of the complex. Use linear least-squares to analyze the data.
atmospheric air at 90o f and 60 relative humidity flows over a cooling coil at an inlet volumetric flow rate of 2000
saturated ammonia vapor at 30 degree in celcius is passed over 30 vertical flat plates each of which is 10 cm high and
How long would it take to completely liquefy the paraffin, from an initial state for which all the paraffin is solid and at 27.4°C - How long would it take to melt the paraffin for m = 0.5 kg/s?
An air compressor is designed to compress ambient (assumed to be 100 kPa, 20C) to a pressure 1 MPa. The heat transfer rate to the ambient is anticipated to be equal to 10% of the power input to the compressor.
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