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Refrigerant R 134 at 5 bars and 4°C enters a mixing chamber at a steady rate of 2 kg/s. Another source of refrigerant R134 at 6 bars and 50°C is first throttled before it enters the mixing chamber. The mixture leaves the chamber as a saturated liquid at 5 bars. If heat transfer to the chamber occurs at a rate of 4 kJ/s, determine the mass flow rate of refrigerant gas entering the chamber, in kg/s
Light of wavelength 640nm falls on two slits and produces an interference pattern in which the third-order bright red fringe is 48mm, obtain the separation of the two slits
While giving an injection with a hypodermic syringe, a nurseapplies a force of 3.95 N to the piston of a syringe. The pistonhas a circular cross section of radius 4.00 mm. What is the pressure increase in the fluid within the syringe?
Two people with a combined mass of 134 kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 9.00cm. Find the total load supported by the springs
A meter stick is supported on a fulcrum at the 17 cm mark. A 0.70 kg object is hung from the zero end of the meter stick, What is the mass of the meter stick
A 4.5×106kg spaceship moves away from Earth with a speed of 0.78c. What is the magnitude of the ship's relativistic momentum
A 15kg block is at the top of a smooth incline that is 20 degrees with respect to the horizontal and is 75 m in length. How far down the incline did it slide
A tennis ball of mass = 0.068kg and speed = 21m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. What is the magnitude of the impulse given to the ball
A forearm accelerates a 3.6-kg ball at 7.0m/s^2 by means of the triceps muscle.If the lever arm is 31cm, find the force that must be exerted by the triceps muscle
Someday in the future, an astronaut on Mars (where gMars = 3.71 m/s^2) might lean over the edge of 25.0-meter-tall spacecraft , What will be the package's speed when it strikes the ground
Glenn starts his day by walking around a circular track with radius 48 m for 15 minutes. what is his angular position with respect to where he starts
What is magnitude of the greatest force
q1. what fraction of the power radiated by the sun is intercepted by the planet mercury? the radius of mercury is 2.44
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