The radius in kilometers, to which the present radius of the earth (R = 6400 km) is to be compressed so that the escape velocity velocity is increased

Question

The radius in kilometers, to which the present radius of the earth (R = 6400 km) is to be compressed so that the escape velocity velocity is increased

The radius in kilometers, to which the present radius of the earth (R = 6400 km) is to be compressed so that the escape velocity velocity is increased ten times is
A. 6.4
B. 64
C. 640
D. 4800

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - b
`(v_(e_(2)))/(v_(e_(1)))=sqrt((R_(1))/(R_(1)))`
`100=(R_(1))/(R_(2))`
`R_(2)=(R_(1))/(100)=(6400)/(100)=64.`

4 views Answered 2023-02-05 15:29