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Waly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. He claims that his engine is 92%
(a) What error did he made in his choice of temperature scale? And
(b) What is the actual maximum efficiency of his engine?
A toy train is pushed forward and released at = 2.0 with a speed of 1.5 . It rolls at a steady speed for 2.8 , then one wheel begins to stick. The train comes to a stop 5.6 from the point at which it was released. Elucidate the train's accelera..
A 0.599 kg object is at rest at the origin of a coordinate system. A 3.76 N force in the positive x direction acts on the object for 2.46 s. What is the velocity at the end of this interval
An electron is traveling through a region of space in which the electric field is along the +x direction and has a magnitude of 2313 N/C. What is the acceleration of the electron? magnitude m/s2 direction
A person with a nearsighted eye has near and far points of 20 cm and 26 cm, respectively. Assuming a lens is placed 1.4 cm from the eye, what power must the lens have to correct this condition? If I have found this answer to be -4.065 diopter, what w..
A molecule is shown schematically. The distance from the center of the larger atom to the center of the smaller atom is d = 0.96, and the angle between the smaller atoms is θ = 105.6°. Find out the center-to-center distance between the smaller ato..
A centrifuge is a common laboratory instrument that separates components of differing densities in solution. what is the magnitude of its angular deceleration
question1prairie dogs live in underground burrows with at least two entrances. one entrance is higher above ground and
A wire that is carrying a current is placed in a uniform magnetic field pointing out of the page. What direction does the force on the wire point
The space shuttle typically orbits 400 km above the earth's surface. The earth has a mass of 5.98 × 1024 kg, Use your knowledge of gravitation to determine the orbital speed of the shuttle's cargo
What is the work done by the tension in the cable.assume the roller coaster (h1 = 34 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach..
Two archers shoot arrows in the same direction from the same place with the same initial speeds, but at different angles. how far apart are the two arrows when they land
A 100000 liter water tower is to be drained. The pump can pull water out of the tank through a circular opening in the tank at a velocity of 10 meters per second
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