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A radiant energy measurement is made to determine the temperature of a hot block of metal. The emitted energy from the surface of the metal is measured as 28 ± 0.4 kW/m2 and the surface emissivity is estimated as ? = 0.90 ± 0.05. Calculate the surface temperature of the metal and estimate the uncertainty.
an industrial machine of mass 453.4kg is supported on springs with a static deflection of 0.508cm. the machine has a
A bullet is fired horizontally into a wood block resting on a horizontal, frictionless surface. If the mass of the bullet is 0.02 Kg and the velocity is 600 m/s
a 12-ft-long overhaning timber beam ac with an 8-ft span ab is to be designed to support the distributed and
a missile with a conical nose cone with a semivertex angle of 16 deg is flying through sea level air at a speed of 817
a refrigerator consumes 280 w of electric power when it is running. the cost of electricity is 10 cents per kwh. what
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
a first-order system with a time constant equal to 10 ms is subjected to a sinusoidal forcing with an input amplitude
carbon dioxide is compressed in a reversible adiabatic process from 15 psia 70of to 60 psia using a steady-flow device
A pilot in an airplane flying horizontally with constant speed of v = 480 km/hour at an elevation of h=610 m above a level plain wishes to bomb a target B on the ground as shown below. At what angle below the horizontal should he see the target at th..
a hair dryer is basically a duct of constant diameter in which a few layers of electric resisiotrs are placed. a small
The cable supports a unit load w which decreases from 100 lb /ft at x = 0 to 40 lb /ft at x = 30 ft with the decrease propor- tional to x2. Determine the equation of the curve assumed by the cable.
Entropy Generation in a Steam Turbine, Steam at a rate of 15lbm/s enters a turbine at 500 Psia, 800f and exits at 5 Psia. For a reversible, adiabatic process (iseentropic)
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