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A Carnot engine has an efficiency of 0.38. The Kelvin temperature of its hot reservoir is quadrupled, and the Kelvin temperature of its cold reservoir is doubled. What is the efficiency that results from these changes?
A car weighing 8800 Newton moves along a level highway with a speed of 100 km/h. The power of the engine at this speed is 78 kilowatt. compute the new speed of the car on the hill
determine a set of non-orthogonal base vectors a j k b i k and c i j.a establish their reciprocal vectors and
A mass attached to a spring experiences a displacement x =3cos(t) + 4sin(t). What is the amplitude of the simple harmonic motion
To reduce the power requirement of elevator motors, elevators arecounterbalanced with weights connected to the elevator by a cablethat runs over a pulley at the top of the elevator shaft. Neglectany effects of friction in the pulley.
What is the relationship between the heat of fusion of a solid and the amount of heat needed to melt it?
A cannonball is shot (from ground level) with an initial horizontal velocity of 39.0 m/s and an initial vertical velocity of 27.0 m/s. What is the initial speed of the cannonball
A person drops a cylindrical steel bar (Y = 2.00 × 1011 Pa) from a height of 3.30 m (distance between the floor and the bottom of the vertically oriented bar). what is the maximum compression of the bar
For a single slit diffraction, first dark fringe appears at an angle 15 degrees from the central maxium. At which angle will the 3rd dark fringe be formed
A cockroach of mass m lies on the rim of a uniform disk of mass 8 m that can rotate freely about its center like a merry-go-round. determine the angular velocity of the cockroach-disk system
"For modeling purposes specific distribution assumptions are indispensable if we need precise and sharp results. Results based on bounded moment conditions are naturally imprecise and blunt." Discuss
An AC series circuit has 12.0 ? resistance, 15.00 ? inductive reactance and 10.00 ? capacitive reactance. obtain the power output
What is the final temperature of the heating element
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