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2 years ago

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A train Traveled from hong kong to beijing. It traveled at an average speed of 160 km/h in the first four hours. After that, it

traveled at another average speed of 180 km/h. If the distance between hong kong to beijing is 1180 km, what was the total time for the whole journey

1 answer:

4vir4ik [10]2 years ago

3 0

The answer is 7 hours

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Can someone explain it with steps?

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Answer:

Option C is the correct answer

Explanation:

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1. You place an object 63 cm in front of a converging lens, with a 40 cm focal length.

NikAS [45]

Answer:

1.

109.6 cm , - 1.74 , real

2.

1.5

Explanation:

1.

d₀ = object distance = 63 cm

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using the lens equation

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2

d₀ = object distance = a

d = image distance = - (a + 5)

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using the lens equation

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