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Several 2-m-wide, 4-m-long thin metal plates are towed for an underwater construction. Assuming the tow vehicle moves at a speed of 2 m/s and the plates are parallel to the free stream, calculate the drag force for a single plate positioned as in cases a and b in the figure. Calculate the boundary-layer thickness at the end of the plate (for the two cases). Assume laminar flow (Blasius solution) and use seawater properties from Table 1.1.
a tennis racket hits a tennis ball with a force of where 1230 500 and is the time in milliseconds. the ball is in
A pure copper sphere of radius 1 cm is dropped into an agitated oil bath that has a uniform temperature of 130C. The initial temperature of copper sphere is 20C.
Design a simple inverting comparator circuit with a hysteresis voltage of 120 mv and adnominal threshold of +2.5 V. indicate component volues. A sensor provides temperature data as 360 mv/ c. Develop a comparator circuit that goes high when the tempe..
An air-conditioner which uses refrigerant R134-a operates on the Carnot refrigeration cycle. Determine the rate of heat transfer (kW) out of the condenser. Determine the power input (kW) to the compressor.
A 35lb block of tin is to be heated from room temperature to a relevant temperature for casting, Calculate enough points and plot a time-temperature graph if the heating is provided by a 5kw electric heating element with 70% efficiency.
the front of a jet engine acts as a diffuser receiving air at 900 kmh -5degc 50 kpa bringing it to 80 ms relative to
you are looking for a power unit to run an irrigation pump in your operation. the pump requires 92 horsepower to turn
a small water droplet of diameter d100 micro meter and temperature tmp 0 deg c falls on a nonwetting metal surface
Also, a current limiting resistor of 20 kΩ is available for the base of the BJT and a resistor of 200 Ω is available in series with the power supply and the LED. Indicate a practical application of this device.
Assume that the charge cooler incoming cooling water is at 45 oC and its effectiveness is 80% and the air pressure loss in charge cooler is 10 kN/m2, calculate the air temperature and density at the outlet of the charge cooler. Estimate the % increas..
How many engagement points on the flywheel would be necessary to make this machine safe?
a cylinderpiston arrangement contains water at 105 c 85quality with a volume of 1l. the system is heated causing the
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