A train of weight 5000 kN is pulled on a level track with a constant speed of 10 m/s. The frictional force is 75 kN. The power of the engine is:

Laser beam welding employs a vacuum chamber and thus avoids use of a shielding method

A train of weight 5000 kN is pulled on a level track with a constant s

1.	A train of weight 5000 kN is pulled on a level track with a constant speed of 10 m/s. The frictional force is 75 kN. The power of the engine is:
A.	375 kW
B.	750 kW
C.	Laser beam welding employs a vacuum chamber and thus avoids use of a shielding method
D.	3000 kW
Answer» C. Laser beam welding employs a vacuum chamber and thus avoids use of a shielding method

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A train of weight 5000 kN is pulled on a level track with a constant speed of 10 m/s. The frictional force is 75 kN. The power of the engine is:

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