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A carnot refrigerator takes heat from water at 0 degrees Celsius and rejects heat to a room temperature at 20 degrees Celsius. Assume that 78 grams of water at 0 degrees Celsius are converted to ice at 0degrees Celsius by the refrigerator. Compute the mechanical energy that should be supplied to the refrigerator. (Note: The heat fusion of water is 3.34 x10^5 J/kg)
A 10.0-V battery is connected to a 120-(ohm) resistor. Ignoring the internal resistance of the battery, calculate the power delivered to the resistor
A horizontal wire carries a current I 1=80 A. A secondwire is suspended parallel to it. If the second wire carries 20 Aand has a mass per unit length of 0.2 g/m,
The solution uses on 450 nm and 525 nm however there is a 3rd gap in the problem, 630 nm. Is there a reason why this information in not utilized in calculating the index refraction of the mica sheet?
Cold fusion theory.
The radius of the earth's orbit around the sun (assumed to becircular) is 1.50 108 km,and the earth travels around this orbit in 365 days. What is the magnitude of the orbital velocity of the earth in m/s
Explain how do Decisions concerning span of management and the use of committees and coordination techniques affect basic organizational structure
A styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended
A fluid with viscosity n flows through a tube of radius R and length L. What must be the radius of the second tube so that both fluids have the same volume flow rate
The mass of Dr. Smith and the skateboard are 80 k. Dr. Alex throws a 2.5 kg bal horizontally at 3.0 m/s to the right at Dr. Smith, who catches it
A 1300kg sports car accelerates from 0m/s to 33m/s in 12s . What is the average power of the engine?
optimus prime is flying straight up at 47 ms when he accidentally drops his mega-ray blaster and it falls 72 m to the
In an RLC series circuit the phase angle between the currentand voltages is 30 degrees. If the AC frequency doubles, what is the resulting phase angle
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