Earth revolves around the sun in 365 days. If the average distance from the sun is 150 million km. Find earth's linear velocity.

20 km/s

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30 km/s

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10 km/s

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40 km/s

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Solution

The correct option is B 30 km/s
Time period, $T = 365$ days
= $365 \times 24 \times 60 \times 60 s$
= $31536000 s$
Linear velocity $= \frac{2 π R}{T} = \frac{2 π \times 150, 000, 000}{31536000} = 30 k m / s$

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Earth revolves around the sun in 365 days. If the average distance from the sun is 150 million km. Find earth's linear velocity.

The correct option is B 30 km/sTime period, T=365 days = 365×24×60×60 s = 31536000 s Linear velocity =2π RT=2π×150,000,00031536000=30km/s

The correct option is B 30 km/s
Time period, $T = 365$ days
= $365 \times 24 \times 60 \times 60 s$
= $31536000 s$
Linear velocity $= \frac{2 π R}{T} = \frac{2 π \times 150, 000, 000}{31536000} = 30 k m / s$