Describe escape velocity, Physics

Assignment Help:

Q. Escape Velocity

An object will conquer the force of gravity when its kinetic energy in the direction away from earth exceeds its potential energy. We find the smallest kinetic energy required by solving K.E. = P.E..

Then

mv2/2=mgr,

Where m is the mass of object and v is its velocity and g is the acceleration due to gravity and r is the radius of the earth.

Solving for v

v2= 2gr

v =√2gr

Taking the earth's radius as 3960 miles as well as the acceleration due to gravity as 32 feet per second2 we have

V=√232/5280 × 3960

Which reduces to 6.9 miles per second


Related Discussions:- Describe escape velocity

Interference, Construction and working of Fabry perot interferometer

Construction and working of Fabry perot interferometer

Describe how the law of conservation of energy, Describe how the law of con...

Describe how the law of conservation of energy holds good in light interference pattern

Illustrate how are amps and watts related, Q. Illustrate how are amps and w...

Q. Illustrate how are amps and watts related? Answer:- In a nutshell the power calculated in watts dissipated by a resistance is directly proportional to the square of the

Demonstrating the cause of the phases of the moon, Demonstrating the cause ...

Demonstrating the cause of the phases of the moon Place a lighted candle or electric lamp on a table in a darkened room. Paint an 8 cm rubber ball white. Hold the ball in your

Kl, #quuiujiestion..

#quuiujiestion..

Direction of the current if any induced to flow in the loop, Question: ...

Question: A wire loop as well as a bar magnet lie in one and the same horizontal plane. The bar magnet is exterior of the loop. The bar magnet is rotating at a constant rate co

Variation of temperature according to newton''s law, Variation of temperatu...

Variation of temperature of a body according to Newton's law: Let Consider a system has a temperature Φi at time t = 0. It is placed in an environment whose temperature is Φ0. We a

Determine the concept of beam of light, When a certain beam of light falls ...

When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it.  The number of photoelectrons ejected per second by the beam of light depends upon on

Fundamental units of kelvin and mole, Kelvin : Kelvin is the fundamental un...

Kelvin : Kelvin is the fundamental unit of temperature. It has quantity of zero where the molecular activity of gases ceases. Mole : Mole is the fundamental unit of quantity of

What is least count of stop watch, The least count of the stopwatch is 0.1 ...

The least count of the stopwatch is 0.1 second because in stopwatch we can measure milliseconds also.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd