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Two bodies with temperature-independent heat capacities Chot and Ccold are used as reservoirs (with temperatures Thot and Tcold respectively) for a Carnot heat engine. (This differs from the situation discussed in class where the reservoirs were assumed to have infinite heat capacities and therefore always remained at the same temperature.) Derive an expression for the total work obtainable.
In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. how much energy will it take to melt the core
The helicopter in the drawing is moving horizontally to theright at a constant velocity. the weight of the helicopter isW=53800N. What is the magnitude of the lift force
Three blocks, each of mass 12 kg are on the frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 1.1 m/s2. What is the net horizontal force on b..
An automobile has a mass of 1690 kg and a velocity of 23.8 m/s. It makes a rear-end collision with a stationary car whose mass is 2100 kg. determine how far the cars skid before coming to rest
Indicate the negative x direction by including a negative sign in the answer, but omit a sign for the positive x direction.
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit agolf ball with a 6 iron. For how much more time was the ball in flight
The author's cat enjoys chasing chipmunks in the front yard.
A 10-kg box is stationary on the ground and pushed by a downward force of 30 N. Calculate the supporting normal force acted on the box from the ground
A person doing a chin-up weighs 655 N exclusive of the arms. During first 15 cm of the lift, each arm exerts an upward force of 355N on the torso. If the upward movement starts from rest, what is the person's velocity at this point.
River Pascal with a volume flow rate of 3.3×10^5 joins with River Archimedes, that carries 1.09×106 , to form the Bernoulli River. The Bernoulli River is 120 wide and 20 deep.
A hare and a tortoise compete in a race over a straight course 1.00 km long. The tortoise crawls at a speed of 0.200 m/s toward the finish line. For how long in time was the hare stationary
A second oil is then poured into the right arm until the two levels are even. A small object (density 0.640 g/cm3 ) is dropped into the second column of oil and it is found to float with 20.0% of its volume above the surface.
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