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A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle.
A) What is the engine's efficiency?
B) How much heat is supplied to the engine by the hot reservoir in each cycle?
A string is58.0cm long and has a mass of 3.00 g. A wave travels at5.25m/s along this string. A second string has the same length, butone-fourththe mass of the first. If the two strings are under the same tension, what is the speed of a wave along ..
Consider a concave mirror with a focal length of 18.90 cm. Find the location of the image when the object is 10.20 cm from the mirror. What is the magnification of the image? What is the radius of curvature of the mirror in cm? Is is virtual and u..
If a violin string transmits waves at 375 m/s and has 295 Hz as its fundamental frequency, what is the string's length.
During a thunderstorm, you see a flash of lightning hit the Earth far away from your location. You look at your watch and hear the thunder exactly 10 s after. How far away did the lightning strike the ground
The wire is located in a uniform magnetic field B directed perpendicular to the wire. Compute the magnitude of B when the force on the wire due to B is 0.200 N.
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.5 mm. What is the resistance ratio RA/RB, measured between their ends
Over a time interval of 2.16 years, the velocity of a planet orbiting a distant star reverses direction, Find the total change in the planet's velocity in m/s
A 0.20 kg block on a vertical spring with a spring constant of 5 multiplied by 103 N/m is pushed downward, compressing the spring 0.090 m. When free, the block leaves the spring and travels upward vertically. How high does it rise above point of r..
A 2 kg gun imparts a speed of 500 m/s to a 25 g bullet. what average force is exerted on the shooter's shoulder
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. If radar waves have a wavelength of 3.0 cm.
When his mom asked him why he is smoking he told her, "Don't worry mom, it is not that bad after all." Which term is being described in Trent's situation.
Visualize the one cubic centimeter as formed by stacking up identical cubes, with one copper atom at the center of each. Conclude the volume of each cube.
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