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given heat 1000 j is input to a carnot engine at 300 degrees celsius and waste heat rejected at 10 degrees C. find the thermal efficiency of the engine and the work performed.
q1. the magnitude of f is 384 newtons and it points at 344o measured counter clockwise from the positive x-axis. what
One of the events in the Scottish Highland Games is the sheaf toss, in which a 7.92-kg bag of hay is tossed straight up into the air using a pitchfork. Using the total impulse produced by gravity, determine how long the sheaf is airborne
A stamp collector is viewing a stamp with a magnifying glass held next to her eye. Her near point is 25 cm from her eye. What is the angular magnification when the image of the stamp is 39 cm from the eye
Which is cheaper for the company: to buy or lease real estate? Show your computations. Illustrate what non-quantitative factors should the management consider when making the decision?
When a 45.0-V emf device is placed across two resistors in series, a current of 15.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel,
A wheel has a rotational moment of inertia I=150. It is accelerated by a constant torque from rest to a final angular velocity of 1.0. what is the value of the torque applied
The coefficient of kinetic friction is 0.50. A horizontal force of magnitude 87 N begins to pull directly on the block. In unit-vector notation, what are the resulting accelerations of (a) block and (b) slab.
two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. How far should Rhoda compress the spring to score a direct hit
A scuba diver can withstand pressures up to 4.2 atm without rish of getting the bends. What is the maximum safe diving depth
A stone takes 0.28s to travel past a window 2.2m tall. From what height above top of the window did the stone fall?
An ideal gas has a pressure of 2.5 atm, a volume of 1.0L at at temperature of 30 degrees Celcius. How many molecules are there in the gas
A 8.85- g bullet from a 9-mm pistol has a velocity of 376.0 m/s. what was the velocity of the bullet as it emerged from the block
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