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Steam locomotives have an eff of 17% and operate with hot steam temp of 425C.
A.) what is the cold temp?
B.) what is the max eff if the cold temp 150C?
Compute the voltage drop along a 23 length of household no. 14 copper wire (used in 15- circuits). The wire has diameter 1.628 and carries a 12 current.
If the electric field in an EM wave in free space has a peak magnitude of 7.5*10^-5 v/m, what is the peak magnitude of the magnetic field strength
What is frequency of the rotational motion for the wheel
A soap bubble strongly reflects light of 463nm, wavelength, if the index of refraction of the film is 1.35, what is the thinnest thickness the soap film can be
Two optically flat glass plates, L = 16 cm long, are in contact at one end and separated by d = 0.020 mm at the other end. What is the number m of bright fringes which are visible
A circus performer stretches a tightrope between two towers. He strikes one end of the rope, find the tension in the tightrope
carnival ride has a large horizontal steel disc of radius 5m from which cars are suspended by a 6m long chain. the disx is rotated about its axis so that the cars swing out and revolve in a circular path. at operation speed the angle of the chains ..
A playground merry-go-round of radius R = 1.60 m has a moment of inertia I = 275 kg · m2 and is rotating at 8.0 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
A uniformly charged conducting sphere of 1.6 m diameter has a surface charge density of 9.9 µC/m2. What is the total electric flux leaving the surface of the sphere
Two large identical flat metal plates are placed parallel to one another, seperated by a small distance compared to their linear size. One plate is given a charge per unit area 1.80E-5 C/m2 and the other a charge per unit area -1.80E-5 C/m2. Using..
When a turntable rotating at 45 rev/min is shut off, it comes to rest in 20 s. Find the angular acceleration
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck, What is the speed of the truck when they are abreast, How far was the automobile behind the truck initially
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