3 years ago

A train travels 79 kilometers in 2 hours, and then 77 kilometers in 3 hours. What is its average speed?

1 answer:

4 0

Average speed=total distance traveled/time. Total distance=the sum of the two short distances=79*2+77*3=389 km. Total time used to travel is 2+3=5 hr. Average speed is 389/5=77.8 km/hr.

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navik [9.2K]

Answer:

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Explanation:

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2 years ago

(11%) Problem 5: A uniform stationary ladder of length L = 2.7 m and mass M = 11 kg leans against a smooth vertical wall, while

jeka94

Answer:

970.2 N

Explanation:

We are given that

Length of ladder=2.7 m

Mass,M=11 kg

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$\theta=51^{\circ}$

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3 years ago

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myrzilka [38]

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24. A 50-turn coil has a diameter of 15 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.50 T so that

finlep [7]

Answer:

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