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# Physics/physics

Gena wrote at 2010-07-06 21:07:15
Azhar, there is an error to your methods of calculations.

The velocity is displacement/time, yes. And your time provided is correct. But your displacement is incorrect.

1.5*10^11 is just the radius, in order to find the displacement, you must find the circumference.

So take the 1.5*10^11 and plug it in the equation 2*pi*r to get 9.4*10^11. Then plug this new number as the displacement over time to get your velocity.

Gena

Christian Webb wrote at 2015-10-24 17:27:08
the velocity has to be multiplied by 2(pie) to get 29885.87

Physics

Volunteer

#### Azhar Ali Haidry

##### Expertise

I can try to give the answers about general physics (including, mechanics, thermodynamics, waves and oscillations, modern physics and electronics) of undergraduate level. I can also try to give the answers about quantum mechanics.

##### Experience

I have been teaching in a university, since last three and half year.

Education/Credentials
MSc physics. and my MPhil is in progress.