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1. ### Does relativity apply to particles that (almost) reach the speed of light?

...use is ( U + V) / ( 1 + U*V) = (99.997% + 0.075%) / ( 1 + 99.997% * 0.075%) = 99.9970045%. Even if you combined two speeds...

4 Answers · Science & Mathematics · 28/02/2015

2. ### What is the horizontal distance that you should expect you projectile to travel before it touches the floor?

...root) then Vx = 3.4 cos30 =2.94 m/s X = Vx t = 2.94 (0..678) = 1.99 m so a) about 2 meters If someone gives you a good response...

1 Answers · Science & Mathematics · 23/02/2015

3. ### Uniform Circular motion?

...angular velocity v = Rω or ω = v/R = 29885.775 / [1.5 x 10¹¹] = 1.99 x 10^(-7) rad/s and (c) centripetal acceleration: = v² / R = 29885....

2 Answers · Science & Mathematics · 16/02/2015

4. ### Can someone help me answer this Physics problem?

The mass of the sun is also irrelevant. (T² / D³)_earth = (T² / D³)_mars (1 yr)² / (1.5e11 m)³ = T² / (2.28e11 m)³ T² = 3.5118 yr² T = 1.874yr * 365.25day/yr * 24h/day * 3600s/h = 5.91e7 seconds If...

2 Answers · Science & Mathematics · 20/01/2015

5. ### Why won't Voyager 1 return to our solar system but comets will?

... 117 x 1.49 x 10^11 = 1.7 x 10^13 m away currently. Answer to 1). Do the calculation. 2GM = 2 x 6.67 x 10^-11 x 1.99 x 10^30 = 26.55 x 10^19...

3 Answers · Science & Mathematics · 28/12/2014

6. ### Physics question?

It comes from the bumper of the car. It is the force required to accelerate the block at 1.99 m/s². It is also the force required to reduce the acceleration of the car by 0.01 m/s²

3 Answers · Science & Mathematics · 04/12/2014

7. ### Help!!!!!!!!!!1?

3) All are necessary? The volume of the object and the volume displaced by the object are the same thing, maybe you are supposed to 'not need' one or the other? 4) It's a cubical tank, so the water height is (root 3) of 10, = 2.154 metres...

1 Answers · Science & Mathematics · 08/10/2014

8. ### Help With Physics Homework!?

... ) / ( 4 * π ² ) ) (orbital radius in meters) You can do the calculation

2 Answers · Science & Mathematics · 11/10/2014

9. ### Please answer this!!! Its so easy there is a multiple choice!!?

1) Q = v*A = constant v1*A1 = v2*A2 Area is circular, so A = pi*d^2/4 v1*pi*d1^2/4 = v2*pi*d2^2/4 v1*d1^2 = v2*d2^2 Solve for v2 v2 = v1*d1^2/d2^2 Plug in numbers v2 = 2.0 m/s * (6)^2/(3)^2 = m/s 2) Specific gravity = density of the material...

1 Answers · Science & Mathematics · 06/10/2014

10. ### Certain stars are thought to collapse at the end of their lives, combining their protons and electrons to form?

There are different ways to do this. The simplest way (and the one I'm guessing you are supposed to use) is this. The radius, r, of a nucleus containing...

2 Answers · Science & Mathematics · 11/05/2014