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A Carnot engine whose cold reservior temperature is 262.09 in Celsius has a thermal efficiency of 15.88%. By how much should the temperature of the hot reservior be increased to raise the efficiency to 40.58%
When a car is traveling at 25 m/s on level ground, the stopping distance is found to be 22m. This distance is measured by pushing hard on the brakes so that the wheels skid on the pavement. The same car is driving at the same speed down an incline th..
A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 7.70 cm. If the cork is 13.5 m from shore, how long does it take a ripple passing the cork to reach the shore? _____s
A charged isolated metal sphere of diameter 13 cm has a potential of 9800 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere.
A block just begins to slide down a ramp after being elevated to an angle of 40 degrees. What is the coefficient of static friction
When a water gun is fired while being held horizontally at a height of 1.00 m above ground level, the water travels a horizontal distance of 4.90 m. how far will the water travel horizontally
In an oscillating LCcircuit, when 86.0% of the total energy is stored in theinductor's magnetic field, what multiple of the maximum current is in the inductor
In 0.181s, through a distance of 8.05 m, a test pilot's speed decreases from 88.9m/s to 0m/s. If the pilot's mass is 70 kg, how much work is done against his body.
a 4-omega and 6-omega resistor are connected in series to a battery with V=12V. Calculate the power dissipated in the 6-omega resistor
two equal masses m are connected to three identical springs spring constant k on a frictionless horizontal surface. one
For a certain block on a spring, the block's displacementx = X sin() and its velocity v = X cos(), with X = 0.57 m. If the block has a mass of 0.19kg and the spring constant is 55 N/m, calculate the total energywhen = 44°.
In the old west, a marshal riding on a train traveling 50 m/s seesa duel between two men standing on the Earth 50 m apart parallel tothe train. Who was struck first
A block with mass of 4.52 kg is attached to a horizontal spring with spring constant k = 3.59 102 N/m, Find the speed of the block at the equilibrium point
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