Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A convenient measure of the performance of a refrigerator is expressed by the coefficient of performance w, which is the ratio of the heat extracted from the low-temperature resevoir to the work done on the refrigerant. Unlike the thermal efficiency n, w may be considerably larger than unity.
Derive an expression for the heat rejected to the high-temperature reservoir.
Such a refrigerator is called a "heat pump" and can warm a house in winter by refrigerating the ground, outside air, or water supplied in the mains. Assume a value of 5 for the coefficient of performance and comment on the effectiveness of a heat pump.
A 0.250 mm thick strip of calcium metal is placed in a perpendicular magnetic field of 5.00T. how many free electrons per calcium atom are there
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
a brass ring of diameter 10.00 cm at 20.0degc is heated and slipped over an aluminum rod with a diameter of 10.01 cm at
The spaceship Enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be +0.80c. A sister ship, What is the velocity of Enterprise 2
How many excess electrons can be counted in a rubber rod of -8* 0.00001 nano coulombs of charges? A metal ball has -1 coulomb of charge. If it receives 0.50*10^20 number of electrons , what will be the net charge of the ball?
A car radio draws 0.13 A of current in the auto's 12-Velectrical system. How much electric power does the radio use?What is the effective resistance of the radio?
A cylindrical copper cable carries a current of 1380 A. There is a potential difference of 1.6 10-2 V between two points on the cable that are 0.21 m apart. What is the radius of the cable
A ball thrown upward returns to the same level after 4s in the air. How long would that ball take to reach the same level
A particle starts from the origin at t=0 with a veolicty of 6.0i m/s and moves in the xy plane with a constant acceleration of (-2.0i+ 4.0j). how far is it from the origin
A diving board length = 5.60 that weighs 250 is supported by two pillars. One pillar is at the left end of the diving board; the other is distance = 1.65 away. Determine the magnitude of the force exerted by the left pillar while an 80.0 diver sta..
after a completly inelastic collision between 2 objhects ofequal mass, each having initial speed v, what was the angle between their initial directions
A spaceship moves away from the Earth with a speed of 0.80c. Thespaceship then fires a missile with a speed of 0.50c relative to the spaceship. What is the velocity of the missile measured by observers on the Earth if the missile is fired toward th..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd