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In a design test of penetration resistance, a 12-gram bullet is fired through a 400-mm stack of fibrous plates with an entering velocity of 600 m/s. If the bullet emerges with a velocity of 300 m/s, calculate the average resistance R(a force) to penetration.
refrigerant -134a at 800kPa and 25 C is throttled to a temperature of -20C. determine the pressure and the internal energy of the refrigerant at the final state.
a train made up of 3 cars of weight 60000 lb each connected by coupling springs of stiffness 15000 lbin. is released by
A 60 ohm, 40 ohm, and 20 ohm resistor are each connected in parallel across a 120VAC source. What is the total current.
Gear A rotates with an angular velocity of 100 rpm clockwise. Knowing that the angular velocity of arm AB is 50 rpm counterclockwise, determine the corresponding angular velocity of gear B.
What is the composition of the last solid remaining prior to complete melting?
two refrigerators are arranged in series. one of them receives 300 kjcycle from a reservoir at 300 k. the heat
a pressurized water tank is used as a source of water for a fire hose. the pressure of the air in the top of the tank
the force f of magnitude 800 n is to be resolved into two components along the lines a-a and b-b. determine by
What would have been the advantages or disadvantages of Tata collaborating with another automaker on the Tata? Who might it have collaborated with?
The cylinder of a water-cooled reciprocating compressor contains 0.05m^3 of air at 1.01bar. It is compressed isothermally to 8.0 bar. Determine the work input and the amount of heat rejected to the compressor cooling water.
The humidity of air can be determined by use of two different thermometers; a 'dry bulb' thermometer and a 'wet bulb' thermometer. explain how these thermometers can be used to estimate the amount of water vapour in the air.
Explain what is meant by an overall heat transfer coefficient and explain what is mean by failing and what its effect will be on the value of the overall heat transfer coefficient.
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