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A heat engine that operates on a Carnot cycle uses a low-temperature reservoir at 25 oC and runs at an efficiency of 0.350. The working substance is nitrogen gas, and the gas chamber contains 7.10 x 1023 N2 molecules.
What is the change in the thermal energy of the N2 gas between its lowest and highest temperatures?
We know light speed (average) gets slow while in transparent materials like glass and water. And fraction of it gets absorbed as a heat (K.E. of molecules of glass). But my question is that How it can then leaving glass slab or any glass material ..
A mass m hangs from a uniform spring of constant k. what is the period of oscillations in the system
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 11.7 rad/s. how far would you have gone if the bike could move
You are driving a car which is heading 30 m/s towards a brick wall. You sound a horn which emits at a frequency of 410 Hz when at rest. What is the beat frequency that you hear
As your bus rounds a flat curve at constant speed, a package with mass 0.300kg , suspended from the luggage compartment of the bus by a string 50.0cm long, What is the speed of the bus
while driving on the freeway at 110 kmh you pass a truck whose total length you estimate at 25 m a- .if it takes you
A ball is initially at rest in your hand. You then accelerate your hand upwards at 20 m/s2 for 0.1 s and release the ball. How far a distance did you lift the ball through
A spring with a spring constant of 224.8 N/m is compressed by 0.229 m. What is the speed of the ball bearing right after it loses contact with the spring
An unstable high-energy particle enters a detector and leaves atrack 1.22 mm long before it decays. Its speed relative to thedetector was 0.810c. What is its proper lifetime inseconds? That is, how long would the particle have lasted beforedecay had ..
Consider a solid sphere of radius 15 cm, at a temperature of 68 degrees Celsius. What is the power radiated (in watts) by the sphere
The moon orbits the Earth at a distance of about 3.84 x 108 meters in a path that takes 27.3 days to complete. What is the centripetal acceleration of the moon
A flat circular coil of 10 turns with an area of 4.4multiplied by 10-2m2 is located in a uniform magnetic field of13 mT. Initially, the magnetic flux passes through the coil perpendicularly. The coil is then rotated, in 150ms, so that its central a..
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