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1. A Carnot engine works between two heat reservoirs at temperatures Thot= 314.0 K and Tcold= 225.0 K. What is its efficiency?
2. If it absorbs 156.0 J from the hot reservoir during each cycle, how much work does it do per cycle?
3. How much heat does it reject during each cycle?
4. What is the coefficient of performace, COP, of this engine when it works as a refrigerator between the same two reservoirs?
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.3 mm. What is the resistance ratio RA/RB , measured between their ends
A 4.0x104 kg spaceship located halfway between them. What is the total potential energy of the ship
Two rockets, A and B, approach the earth from opposite directions at speed 0.60c. What is the length of rocket A as measured by the crew of rocket B
An adventurous archaeologist crosses between two rock cliffs. If the angle between the rope and the horizontal is = 11.8, find out the tension in the rope.
Many people mistakenly believe that the astronauts orbiting the earth are "above gravity." Compute the acceleration because of gravity, g, for space shuttle territory, 245 kilometres above the earth's surface (dashed line in sketch). Earth's mass ..
A 75 kg patient swallows a 30 micro Ci beta emitter wtih a half life of 5 days. The beta partiles are emitted with an average energy of .35MeV. What dose equivalent does the patient recieve
A 38 ohm resistor is made from a coil of copper wire whose total mass is 11.2 g. Find out the length and diameter of the wire.
A 44.0-? resistor is connected in series with a 68.0-µF capacitor and a generator having a maximum voltage of 1.20E2 V, find the capacitive reactance of the circuit
An electron is accelerated from rest through a potential difference of 2.50 kV. What would be its de Broglie Wavelength
The root-mean-square speed at 299K is 483 m/s. What is its average translational kinetic energy at that speed
Find out the moment of inertia of the wheel if the block rises to a height of = 7.70 cm before momentarily coming to rest.
A square loop 15.0cm on a side has a resistance of 8.05? . It is initially in a 0.395T magnetic field, Calculate the electric energy dissipated in this process
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