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 speed of sound (Mach 34) and several times the muzzle velocity of a rifle 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, escape velocity is the speed at which the kinetic energy plus the gravitational potential energy of an object is zero.
Which one of the following is not. the same as the other three ?
The widely used 7-bit ASCII code is employed:
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URL stands for
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Non impact printer
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What does a light pen contain?Â
Which of the following options is used to check spelling and grammar in a Microsoft Word document?
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