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The second engine receives this energy rejected by the first one, converts some of the work, and rejects the rest to a reservoir at 300 K. If the thermal efficiency of both engines is the same what
When a potential difference of 156 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 20.0 nC/cm2. What is the spacing between the plates?
An air-filled parallel-plate capacitor has plates of area 2.50 cm2 separated by 1.00 mm. The capacitor is connected to a 21.0-V battery.
The American Standard Code for Information Interchange has 128 characters, which are binary coded. If a certain computer generates 1,000,000 character per second, the minimum bandwidth required to
Air enters the compressor at 98 kPa and 295 K at a rate of 10 kg/s and exits at 1 MPa and 620 K. Determine the excess power produced by the generator that can be used for other purposes.
A binary channel with capacity 36 k bits/sec is available for PCM voic transmission. If signal is band limited to 3.2 kHz, then the appropriate values of quantizing level L and the sampling frequenc
Consider a Carnot Refrigeration cycle with a working fluid of R-134a operating between temperatures of -10oC and 20oC. What is the maximum coefficient of performance?
An aluminum sphere is 5.50 cm in radius. What is its volume expansion coefficient if it increases in volume 2.00 cm3 when heated from 100 oC to 151 oC?
The density of water is constant at 1000 kg/m3 what must the temperature of stream B be such that the temperature of the well-mixed result will be 60oC when the tank fills.
An infinitely wide ,charged , non-conducting slab with a non-zero thickness is centered over the xy plane as described. It has a thickness of 2a.The volume charge density is z dependent and piece-wi
Write the exit volume flow rate as a function of the volume flow rates at states 1 and 2, the heat transfer rate, P3, and k=Cp/Cv.
A capacitor consists of two closely spaced metal conductors of large area, separated by a thin insulating foil. It has an electrical capacity of 4000.0 oF and is charged to a potential difference of
Determine (A) the mass flow rate through the nozzle, (B) the exit temperature of the air, and (C) the exit area of the nozzle. Assume constant specific heats at 300 K.
The electric potential at a position located a distance of 18.9 mm from a positive point charge of 8.70×10-9 C and 13.9 mm from a second point charge is 1.42 kV. Calculate the value of the secon
A 85cm3 block of iron is removed from an 800oC furnace and immediately dropped into 200 mL of 20oC water. What fraction of the water boils away?
If the heat lost to the surroundings amounts to 10% of the power output, determine (A) the change in kinetic energy, (B) the power output, and (C) the turbine inlet area.
The power supplied to the compressor is 2.5 kW. Determine the volume flow rate of the refrigerant at both the inlet and exit to the compressor, in m3/min.
In a region of two-dimensional space, there are three fixed charges: 4 mC at (0,0), -4 mC at (-17 mm,5 mm), and 5 mC at (13 mm,1 mm). What is the absolute value of the net force on the -4-mC charge
An electron moving parallel to the x axis has an initial speed of 4.06 x 106 m/s at the origin. Its speed is reduced to 1.12 x 105 m/s at the point x = 2.00 cm. (a) Calculate the electric potential di
Calculate the proper diameter to prevent air entrainment. Is the calculated diameter realistic? If yes explain if no say why and suggest a proper solution.
How many electrons should be removed from an initially uncharged spherical conductor of radius 0.200 m to produce a potential of 9.00 kV at the surface?
Neglect air resistance for the following. A soccer ball is kicked from the ground into the air. When the ball is at a height of 11.35 m, its velocity is (vx,vy) = (6.13,4.59) m/s.what is the horizon
Nickel can be extracted from nickel sulfide concentrates at 1200 C via the reaction. Calculate the mass feed rates of both NiO and Ni3S2 of 99.0% purity that are required to make 200 kg/hr of pure nic
The tennis ball covers a horizontal distance of 14.014 m before it hits the ground. At what height h above the ground was the tennis ball launched?
Two point charges are on the y axis. A 4.80-µC charge is located at y = 1.25 cm, and a -2.2-µC charge is located at y = 1.80 cm. (a) Find the total electric potential at the origin.