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Consider an ideal refrigeration cycle that has a condenser temperature of 40 degree C and an evaporator temperature of -14 degree C. if the refrigerant is R-134a, determine: a) the coefficient of performance for this refrigerant and b) the Exergy destruction when the temperature of the surroundings is 20 degree C.
A silver wire has resistivity ? = 1.88 × 10-8 ?·m and a cross-sectional area of 5.80 mm2. What is the displacement current in the wire at that time
Consider a neutron star whose mass is twice the mass of the Sun and whose radius is 14.1 km. What is the radius of the geostationary orbit for this neutron star
find the force exerted by the rope on the bucket. A metallic object is given the negative charge by the process of induction. What happens to object's mass.
A hydrogen atom is in the 5d state. What is the magnitude of its orbital angular momentum
Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead. What is the power loss due to resistance in the line
A length of wire has a radius of 3.00 × 10 -3 m and a resistance of 0.200 ?. When the potential difference across the wire is 10.0 V, calculate the density of free electrons in the wire
A drug prepared for a patient is tagged with 9943Tc which has a half-life of 6.05 h. What is its activity at the time it is injected
Two identical piano wires have a fundamental frequency of 640 Hz when kept under the same tension. What fractional increase in the tension of one wire would lead to the occurrence of 10 beats/s when both wires oscillate simultaneously.
An 85 kg man lowers himself to the ground from a height of 5.6 m by holding onto a rope that runs over a frictionless pulley to a 75 kg sandbag
At a party, a stereo system comprises of two identical balanced speakers located right next to each other, and they are playing atmaximum volume. A drunken participant trips over one of thespeaker wires and disconnects it leaving the one remaining..
This magnetic field accelerates the electron in a circular motion. What is radius of the circle. The final situation is observed to be all water at 18°C. What was the mass of the ice cube.
A 0.00275-kilogram air inflated balloon is given an excess negative charge, q1 = -3.50 × 10-8 C, by rubbing it with a blanket. what polarity of charge must the rod possess
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