Find average impulsive force exerted by wall on car bumper
A 2500 lb car moving with a velocity of 3 mi/h hits a garage wall and is brought to rest in 0.05 s . Determine the average impulsive force exerted by the wall on the car bumper.
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Steam at 10,000 kg/h passes through an adiabatic turbine from an initial state of 100 bars, 500 degrees C to a final state of 15 bars and 250 degrees C. Determine the isentropic efficiency.
When the energy in the inductor is 2/3 of its maximum value, what is the voltage across the resistor? The inductor ?
An adiabatic air compressor receives ambient air at 300K and 100 kPa, and compresses it to 1000 kPa. Determine the actual exit air temperature.
A solenoid with 500 tunrs per cm, length 18cm, radius of r=10mm and a resistance of R=20 . The coil carries a current i=2A . What is the rate of change of the current in the coil ?
A reversible-adiabatic (ideal) CO2 diffuser operates between 200 kPa and 300 kPa. The inlet temperature and velocity are 300 K and 250 m/s respectively. Determine the exit temperature and enthalpy.
Provide an estimate of the relative magnitudes of the forced and free convection if P1 is increased by a factor of ten while all other parameters, including temperatures, are kept the same.
Calculate the heat transfer coeffcient due to natural convection if the amplifer is mounted horizontally instead with the heated surface facing up.
A 50-Mg railroad car moving with a velocity of 3 km/h is to be coupled to a 30-Mg cae which is at rest determine the final velocity of the coupled cars.
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