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Refrigerant R134a is compressed under steady conditions from a saturated vapour at 100 kPa to 500 kPa. The compressor's isentropic efficiency is 85%. Heat losses from the compressor can be ignored, as can kinetic energy and potential energy effects. Determine the temperature of the refrigerant exiting the compressor.
The speed of sound in air is 343 m/s. What is the speed of a supersonic plane that travels at 1.90 times the speed of sound
1 a singly charged particle accelerated through a potential difference of 115v has a wavelength of 4.4fm. find its
A helicopter 9.00m above the ground and descending at 4.10m/s drops a package from rest (relative to the helicopter). find the y-component of the velocity of the package
Each of the two identical slender bars shown has a length L = 30 in. Knowing that the system is released from rest when the bars are horizontal, use computational software to calculate and plot the angular velocity of rod AB and the velocity of po..
A balloon is filled with 5.45 liters of helium at a pressure of 1.35 atm and a temperature of 24.0° C. Discover the mass of the helium. Discover the buoyant force on the balloon if it is placed in the atmosphere with air pressure at 1.00 atm and temp..
A student in a parked car honks the horn, which has a `proper' frequency of 310 Hz. Calculate the speed of the approaching vehicle
a small sphere carrying a positive charge of 10.0microc is moved against an electric field through a potential
An airplane travels at speed of 125 m/s in calm air. The plane wants to undergo a change of displacement delta x= 183 km i. How lond will it take the plane to reach its destination
At what angle should the road be banked. The charge on the inner shell is 4.59 x 10- 8 C and that on the outer shell is 2.15 x 10- 8 C. Find out the electric field (in N/C) (a) at r = 12.7 cm and (b) at r = 37.3 cm.
Pseudo-wavevectors within first Brillouin zone
Velocity and time for the moving particle.
An electric field of 9.50 105 V/m is desired between two parallel plates, each of area 44.5 cm2 and separated by 2.45 mm of air. What charge must be on each plate
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