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1. Estimate the wind force on your hand when you hold it out of your car window while driving 55 mph. Repeat your calculations if you were to hold your hand out of the window of an airplane flying 550 mph.
2. Estimate the energy that a runner expends to overcome aerodynamic drag while running a complete marathon race. This expenditure of energy is equivalent to climbing a hill of what height? List all assumptions and show all calculations.
determine the component of vector a in the direction of vector b. verify that the computed unit vector has a magnitude
in a refrigerator cycle r-12 enters an evaporator as saturated liquid at 100.4 kpa. it exits with a negligible pressure
A work center consisting of 3 machines operates 40 hours a week. In a 4-week period, it actually worked 360 hours and produced 468 standard hours of work. Calculate the utilization and efficiency of the work center. What is the demonstrated weekly..
Air in a piston cylinder assembly undergoes a Carnot power cycle. The isothermal expansion and compression processes occur at 1400 Kelvin and 350 Kelvin, respectively. The pressures at the beginning and end of the isothermal compression are 100 kPa a..
A metal plate (k = 180 w/(m*k), p = 2800 kg/m^3, cp = 880 J/(kg*k)) with a thickness of 1 cm is being cooled by air at 5 degrees C with a convection heat transfer coefficient of 30 w/(m*k). If the initial temperature of the plate is 300 degrees C, de..
What elution mechanisms were considered by the authors?
How could the sign of the modulating signal be accounted for during demodulation in each of these types of modulation?
explain viscous damping with a sketch. provide a model that may be used in studying vibrations. given m 2 b 8 and k
The fluid enters the pump rotor radially. Calculate the shaft work required per unit mass flowing through the pump.
a rocket motor is used to accelerate a kinetic energy weapon to a speed of 3500 mph in horizontal flight. the exit
A particle travels around a circular path having a radius of 80m. It is initially traveling with a speed of 10 m / s and its speed then increases at a rate of v = (0.05v) m /s2. Determine the magnitude of the particle's acceleration four seconds late..
Calculate the rate of heat loss per foot and the thermal resistance for a 6-in. schedule 40 steel pipe covered with a 3-in. thick layer of 85% magnesia. Superheated steam at 300°F flows inside the pipe (hc = 30 Btu/h ft2 °F) and still air at 60°F is ..
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