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

Find the amplitude of the simple harmonic motion, A microphone is attached ...

A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 440 Hzsource of sound. The microphone vibrates up and down in s

Describe the term amorphous solids, Describe the term amorphous solids. ...

Describe the term amorphous solids. Amorphous solids: Solids along with particles not arranged in an ordinary fashion. They have merely short range order or still the partic

What is the wavelength of the emitted photon, In the Compton effect, a phot...

In the Compton effect, a photon of wavelength l collides with a stationary electron.  The wavelength of the emitted photon is: a)  longer than l b)  shorter than l c)

Electronics 1, norton theorem and its application and uses in sciences

norton theorem and its application and uses in sciences

Reverse osmosis, Select one membrane industrial separation application for...

Select one membrane industrial separation application for (i) reverse osmosis (RO), (ii) ultrafiltration (UF) and (iii) microfiltration (MF) (at least one of the three (in total

Illustrate a phasor diagram for the two-wattmeter method, (a) Show that the...

(a) Show that the total power in a 3-phase, 3-wire system using the two-wattmeter process of measurement is given by the sum of the wattmeter readings. Illustrate a connection diag

Electricity, what are the properties of quantisation of charge??

what are the properties of quantisation of charge??

What is the angular acceleration, The merry-go-round described in the previ...

The merry-go-round described in the previous problem is pushed with a constant force of 53 N. What is the angular acceleration?

Speed of light in vacuo, Speed of light (in vacuo); c The speed on whic...

Speed of light (in vacuo); c The speed on which electromagnetic radiation propagates within a vacuum; it is described as 299 792 458 m/s.

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