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a heat engine operates between a hih temp reservoir at 610K and low temp reservoir at 320K. In one cycle, the engine absorbs 6400J from the high temp reservoir and does 2200 J of work. What is the net change in entropy as a result of this cycle?
Three balls are constrained to move on the circumference of a circle of radius R. find the characteristic frequencies of the system
An electron and a proton each have a thermal kinetic energy of 3×kBT/2. Compute the de Broglie wavelength of each particle at the temperature of 2050 K. (kb is Boltzmann's constant, 1.38×10-23 J/K).
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
A small, 10.0 g insect stand at one end of a thin uniform metal rod which is initially at rest on a frictionless horizontal table. What is the resulting angular speed of the rod
Resistance are 10N per 1000 for the engine 5N per 1000kg for the trailer. So what's the forward thrust exerted by the engine?
At the end of the run, she is 175 m away from the starting point at an angle of 15.0° north of west. Illustrate what were the direction and length of her second displacement? Use graphical techniques.
A common measure for length in the publishing business is a point, defined as 1/72 inch. Illustrate what is an area of 0.50 gry squared in points squared? Round answer to the nearest hundreth.
Batteries are rated in terms of ampere-hours (A · h). For example, a battery that can produce a current of 3.00 A for 5.00 h is rated at 15.00 A · h.
A 9.0 x 10 -2 ice cube at 0.0C is dropped into a Styrofoam cup holding 0.35 kg of water at 12C, Find the amount of ice remaining
A Circuit has two identical capacitors with capacitance 4x10^-6 in parallel connected to two identical four ohm resistors in parallel. What is the initial charge on the capacitors
Two forces, F? 1 and F? 2, act at a point. F? 1 has a magnitude of 8.20N and is directed at an angle of 60.0, What is the x and component of the resultant force
As a small aircraft approaches a landing strip, it is flying along horizontally at constant (low) altitude, What is the weight of the plane? Air density = 1.29 kg m-3
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