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A heat engine operating between a pair of hot and cold reservoirs with respective temperatures of 500 °K and 300 °K will have
(a) what maximum efficiency?
(b)lf the input energy is 3000 J, what is the output energy?
The mean distance between the Earth and the Sun is 1.50×1011 m. The average intensity of solar radiation incident on the upper atmosphere of the Earth is 1390 W/m2, determine the total power radiated by the Sun
An object has a total energy of 5.60 × 1015 J and a kinetic energy of 1.40 × 1015 J. find the magnitude of the object's relativistic momentum
You can simulate radioactive decay by tossing pennies. Assemble a collection of as many pennies (or other coins) as you can; around 100 would be ideal. What is the half-life in numbers of tosses
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×106N, What is the total work done by the two tugboats on the supertanker
A 139 x 139 timber is used as a short foundation post. It must support a load of 42 kN. Determine the average axial stress in the post
The loop consists of a single turn of flexible conducting wire that is wrapped around a flexible mount such that the dimensions of the rectangle can be changed.
Two motorcycles are traveling due east with different velocities. However, four seconds later, they have the same velocity. During this four-second interval, Which motorcycle was moving faster
The potential on the axis of a uniformly charged disk at 5.5cm from the disk center is 140V ; the potential 12cm from the disk center is 110V. Find the disk radius in cm
A pipe is closed at one end. A speaker attached to an adjustable signal source is placed very near the open end. The volume of the speaker is set very low so that the sound can barely be heard. However, as the frequency of the source is adjusted i..
An unknown resistor is connected between the terminals of a 5.5 V battery. At what rate is energy now dissipated
In 2.8 days the number of radioactive nuclei decreases to one-eighth the number present initially
An ocean liner leaves New York City and travels 13° north of east for 268 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the following directions.
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