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A Carnot heat engine has a thermal efficiency of 0.510, and the temperature of its hot reservoir is 700 K. If 3900 J of heat is rejected to the cold reservoir in one cycle, what is the work output of the engine during one cycle?
A 200-m-wide river flows due east at a uniform speed of 4.5m/s. A boat with a speed of 9.0m/s relative to the water leaves the south bank pointed in a direction 28o west of north. How long does it take for the boat to cross the river
q1. two point charges q1 -10.0 nc and q2 20.0 nc are 15 cm apart on the x-axis. what is an electric potential at the
A block of mass m = 331 g is dragged with a string across a rough horizontal table. The string tension is T = 3.27 N, What is the power supplied by the force of friction
A ship travels 155 km from the port on a course of 35 degrees south of west to an island, then it travels 142 km east of south to a second island, Find the displacement from the starting point to the ending point
a particle is moving in the xy plane with constant acceleration. at t=0, it has a velocity of v=(4.00i-5.00j) m/s. At t=4.00 s, determine the acceleration of the particle (magnitude and direction)
The engine of an aircraft propeller delivers an amount of power 177 hp to the propeller at a rotational velocity of 2390rev/min, How much torque does the aircraft engine provide
Calculate the center of mass of a system of a system of 1 kg weights located at the following positions: (1,4),(-1,4),(-1,-4),(1,-4),(1,5),(1,7)
The calorimeter is constructed of a material that has a specific heat of 0.10 cal/ g. ^{circ}C. When equilibrium is reached, what will be the final temperature.
question 1the system shown below is released from rest.nbspa calculate the smallest coefficient of static friction
questionthe cornea of the eye has a radius of curvature of approximately 0.50 cm and the aqueous humour behind it has
Although California is known for earthquakes, it has large regions dotted with precariously balanced rocks that would be easily toppled by even a mild earthquake. What would be the magnitude of the maximum acceleration of the oscillation, in terms ..
A 66-N %u22C5 m torque acts on a wheel with a moment of inertia 175 kg %u22C5 m2. how long will it take the wheel to make one revolution?
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