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

How and why cph theory does gainsay the relativity, how and why CPH Theory ...

how and why CPH Theory does gainsay the relativity? Answer; Never a CPH Theory gainsays the relativity. It can explain relativistic conceptions. Mainly; A. CPH Theory does c

Rectilinear motion, An elevator is stopped at the ground floor. It starts m...

An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant speed for 35 seconds. Finally, it slows do

Where do I upload, Where do I upload questions and answers for students?

Where do I upload questions and answers for students?

How are solid core fibers terminated, How are solid core fibers terminated?...

How are solid core fibers terminated? The very architecture of solid core fibers creates the precise termination is a not easy operation, although it should be said that in mos

Show electrons quantum theory, Q. For particles that have mass such like el...

Q. For particles that have mass such like electrons quantum theory gives the relationship of wavelength to momentum by which of the following formulas, where h is Plancks constant,

Magnetic flux, What angle we take between magnetic field and plane of loop....

What angle we take between magnetic field and plane of loop....discuss the cases when induced emf is zero in a rotating frame. Ans) We know that Magnetic Flux through a given area

Visible radiation (waves), Visible Radiation (Waves): Visible waves hav...

Visible Radiation (Waves): Visible waves have a wavelength range among 400 and 700 nanometre.

Define resistance, The characteristics of substance by virtue of which it o...

The characteristics of substance by virtue of which it opposes the flow of current by it, is called as the resistance.

Infra-red detectors, Part A) Infra-Red (IR) Detectors: An IR detector...

Part A) Infra-Red (IR) Detectors: An IR detector has an impedance of Z= (400+j200) ? . . During design tests the detector current is measured as 4 µA. What is

Write down the condition for dispersion without deviation, Write down the c...

Write down the condition for dispersion without deviation. Describe power of a lens. What do you mean by magnification?

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