How long does it take to increase the speed of the train
A freight train has a mass of 1.8 107 kg. If the locomotive can exert a constant pull of 8.1 x 105 N, how long does it take to increase the speed of the train from rest to 84 km/h?
Expected delivery within 24 Hours
How much work is required to pull him 65 m up a 30° slope (assumed frictionless) at a constant speed of 2.7 m/s?
The boiler is sized to provide a steam flow of 57.18 kg/s. Determine A) the power produced by the turbine and B) power consumed by the pump.
What is the ratio of total units wasted to total units infused?
Copper crystallizes in a face-centered cubic lattice. If theedge of the unit cell is 351 pm, what is the radius of the copperatom?
A projectile is launched with a speed of 41 m/s at an angle of 55° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight.
It has been proposed that a refrigerator which rejects heat at 20 C will be used to lower the temperature of the coldest reservoir to 0 C. Will the overall efficiency of the system be improved by adding this refrigerator?
The driving distance for the top 100 golfers on the PGA tour is between 284.7 and 310.6 yards (Golfweek, March 29, 2003). Assume that the driving distance for these golfers is uniformly distributed over this interval. What is the probability the
A boat moves through the water with two forces acting on it. One is a 1800 N forward push by the water on the propeller, and the other is an 1100 N resistive force due to the water around the bow. (a) What is the acceleration of the 1500 kg boat?
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