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 long will fiber optics last, How long will fiber optics last? In ca...

How long will fiber optics last? In case of glass basically indefinitely the inert characteristics of the material. It refers to the actual fiber, but not to the polymer claddi

Like Parallel Forces, Tell some examples of Like and Unlike Parallel Forces...

Tell some examples of Like and Unlike Parallel Forces.

Determine the head loss, The pump shown in the figure adds 20 kW of power t...

The pump shown in the figure adds 20 kW of power to the flowing water. The only significant loss is that which occurs across the filter at the inlet of the pump. Determine the head

Doppler effect, Doppler effect (C.J. Doppler) Waves emitted through a ...

Doppler effect (C.J. Doppler) Waves emitted through a moving object as attained by an observer will be blueshifted (compressed) if approaching, redshifted (elongated) if reced

PHYSICS PRACTICAL., I WANT SHORT THEORY OF DEFLECTION MANGNETOMETER TAN A& ...

I WANT SHORT THEORY OF DEFLECTION MANGNETOMETER TAN A& TAN B

Determine the vertical support reactions, The I beam weighs 0.6kN/m and sup...

The I beam weighs 0.6kN/m and supports the load which is P33 kN as shown. The distance from the load to point B is P34 m.  Determine the vertical support reactions at A and B.  (A

Explain plane transmission grating, In plane transmission grating the width...

In plane transmission grating the width of the each slit is same to half of the opaque portion. Which order of spectra will be absent?

Do glass or polymer transmits the radiation, Do glass or polymer transmits ...

Do glass or polymer transmits the radiation? There is not a simple answer since it will always depend on the last use and working conditions of the system. Usually speaking gla

Determine the power absorbed by the circuit, A 20 Ω non-reactive resistor i...

A 20 Ω non-reactive resistor is connected in series with a coil of inductance 80mH and negligible resistance. The combined circuit is connected to a 200V, 50Hz supply. Calcula

Electrostatics, is the potential in the cavity of a charged conductor zero

is the potential in the cavity of a charged conductor zero

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