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Compute all parts of given problem:
Problem: The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically ur=0.002. Suppose a 180,000kg locomotive is rolling at 21m/s on level rails.
Part A: If the engineer disengages the engine, how much time will it take the locomotive to coast to a stop?
Part B: How far will the locomotive move during this time?
I want help to determine how much time will it take the locomotive to coast to a stop.
a firefighter directs a horizontal stream of water toward a fire at an angle of 40deg measured from the horizontal.
A thing, rigid, spherical shell with a mass of 4.00 kg and diameter of 0.200 m is filled with helium at 0 degrees celsius and 1 atm pressure. It is after that free from rest on the bottom of a pool of water that is 4.00 m deep.
A sky diver (m = 58.0 kg) jumps out of an airplane at 20,000 feet and has a v2 drag coefficient of D = 0.26 kg/m. Find the terminal velocity for this diver in air
Explain, using thermodynamically sound principles, what each of the following temperatures represents:
crew members attempt to escape from a damaged submarine 70 m below the surface. what force must they apply to a pop-out
A 65.0 kg object slides down a 30o angle slope from rest at a height of 15.0 m. The coefficient of kinetic friction between the object, find vthe object's speed at the bottom of the slope
What is magnitude of the unknown force
A merry go round has a moment of inertia of 1000 kgm^2. When it is rotating at 2.62 rad/sec, the motor shut off. How large was the friction torque
Assuming constant temperature, as a helium balloon rises through the air: (Select all that apply.) The air pressure inside the balloon decreases. The air pressure outside the balloon decreases. The air pressure outside the balloon increases. The air ..
A proton moves 68 cm on a path parallel to the direction of a uniform electric field of strength 2.8 N/C. What is the charge in electrical potential energy?
a 1.00 x 10^4 kg railroad car is rolling at 6 meters per sec. What is the cars speed just after gravel is loaded
A ball is thrown horizontally from the roof of a building 56 m tall and lands 45 m from the base. What was the ball's initial speed
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