Question
What is the minimum escape velocity of rocket to be
launched into space?Solution
On the surface of the Earth, the escape velocity is about 11.2 kilometers per second 06.96 mi/s), which is approximately 34 times the speedof sound(Mach34) andseveral timesthemuzzlevelocity ofarifle bullet (up to 1.7 km/s). However, at 9,000 km altitude in "space", it is slightly less than 7.1 km/s. In physics,escapevelocityisthespeedatwhichthe kinetic energy plus the gravitational potential energy of an object is zero.
If Swati says, “Jyoti’s father Rajiv is the only son of my father-in-law Arvind”, then how is Asha, who is the sister of Jyoti, related to Arvind?...
How is U related to R?
Find out the two signs to be interchanged in order to make the following equation correct.
8 + 7 x 6 / 16 – 8 = 48
How I related to F?
How is P related to S?
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How is D related to G?
Read the directions carefully and answer the following questions.
If,
‘X * Y’ means X is father of Y,
‘X # Y’ means X is ...
What will come in the place of question mark (?) in the expression ‘A + B @ C % D ? E’ if it indicates that ‘ C is grandfather of E&rs...
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