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1. ### How to find escape velocity?

...r is the distance from the center of the earth. You have everything you need except for r, which you can calculate using centripetal acceleration: a = v^2 / r or g...

2 Answers · Science & Mathematics · 17/11/2012

2. ### using 186,000 miles per second as a speed of light, calculate the time needed for light to reach the earth fro?

..., or S = Vavg T = C T, where the average speed for light is the speed of light C, you can find T = S/C...

3 Answers · Science & Mathematics · 05/12/2011

3. ### Equations for the speed of light and sound?

The speed of light and sound is a magnitude, not an equation.

1 Answers · Science & Mathematics · 17/09/2010

4. ### What are three units for measuring speed?

The preferred units for speed, when using the physics formulas...speed units' denominator, because we prefer to not need four digit numbers to represent the duration of a trip...

5 Answers · Science & Mathematics · 16/03/2010

5. ### Gravitation and Escape Velocity?

...earth it will "travel forever" and never come to a stop it is possible for V to be greater than C the speed of light if M is great enough and r small enough. that is the "...

3 Answers · Science & Mathematics · 01/04/2012

6. ### What is the speed of light?! Need help!? [ 10 point for BA ]?

... in materials with index closer to 1, and slower for index larger. So that means the material with the highest index has the slowest light speed. Since A has a faster light speed, it has the...

1 Answers · Science & Mathematics · 26/03/2011

7. ### Desperate Need for Physics Help!?

...or on the internet, and you will also need to look up the electrical charge for an electron. 2) Find the speed of the electron from (1/2)mass*speed...calculate what field strength is needed. Be careful of the units...

3 Answers · Science & Mathematics · 21/05/2011

8. ### Speed...? need help...?

Distance is 35 miles. Average speed = 35 / 0.5 = 70 mph. I think?!

2 Answers · Science & Mathematics · 26/02/2008

9. ### Through what potential difference would an electron need to be accelerated for it to achieve a speed of 1.6%?

... to find the potential difference. Let us start at energy needed to accelerate the electron to that speed. The kinetic energy of the particle is clearly given by KE...

1 Answers · Science & Mathematics · 14/05/2011

10. ### Power needed to maintain speed?

...travel the distance S. S = vt, the distance traveled at v velocity for t time. Thus the power is WE/t = Fv = 1000 kg-m/sec...

1 Answers · Science & Mathematics · 25/07/2008