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

Evaluate velocity of particle b relative to a, In laboratory frame of refer...

In laboratory frame of reference, particle A moves along X direction with velocity 0.5 c and particle B moves along Y direction with velocity 0.4 c. Evaluate velocity of particle B

Explain the cardinal principles of radiation protection, Question 1. Di...

Question 1. Discuss how will you provide radiation safety to the public and the occupational workers in your radiology department? 2. Explain the cardinal principles of radi

Whose resistance is twice that of the original resistor, Regard as a capaci...

Regard as a capacitor which is charged to 12 volts and then connected across a resistor. Allow t1/2 be the time it takes for the voltage to drop down to 6 volts. Presume the experi

Ray optics, how do i start studying for this topic where should i start

how do i start studying for this topic where should i start

.., functions of the time base on the C.R.O

functions of the time base on the C.R.O

Nucleus, Two stable isotopes of lithium and have respective abundances of 7...

Two stable isotopes of lithium and have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.

What action reaction pair is responsible for pushing a car, Q. What action ...

Q. What action reaction pair is responsible for pushing a car forward? Ans. The wheels push back on the ground using friction while the ground then pushes forward on the

Logic gate, investigatory poject class 12

investigatory poject class 12

Spherical conductor, infrigious system capacity of spherical conductor is e...

infrigious system capacity of spherical conductor is equal to ...........

Not gate , give me full detail about not gate i.e its logic symbol, truth t...

give me full detail about not gate i.e its logic symbol, truth table etc

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