# Yahoo Web Search

1. ### A satellite is in a circular orbit around a planet at an altitude 3r above the planets surface. The radius of the planet is r and the?

radius of orbit is 4r V = √(GM/ R ) V = √(GM/4r) V²4r = GM M = V²4r/...

1 Answers · Science & Mathematics · 28/10/2020

2. ### An electron and a proton are separated by a distance r . ?

A) Fe / Fg = (kQq / r²) / (GmM / r²) = kQq / GmM Fe / Fg = 8.99e9N·m²/C² * (1.6e-19C)² / 6.674e−11N·m²/kg² * 9.11e-31kg * 1.67e-27kg Fe / Fg ≈ 2.3e39...

1 Answers · Science & Mathematics · 28/10/2020

3. ### Are we, the remaining users of YA R &S page a little bit like the brass band on the Titanic? ?

LOL..yeah.   Magistra told me another user here said "YA is where jerks come to be jerks." I could comment further..but it's pointless. Rest assured you're one of the good ones, that...

10 Answers · Society & Culture · 03/11/2020

4. ### A light ray enters an unknown medium from air. Some reflects at 47.5 degrees and the rest refracts at 34 degrees. What is the unknown medium?

so refractive index r (air) = 1 , r (unknown) = x By Snell's law   r (air)*sin(angle of...

1 Answers · Science & Mathematics · 30/10/2020

5. ### Calculate the index of refraction of water when a light ray that hits the top of a glass of water at incidence angle 35° is refracted at 25°?

so refractive index r (air) = 1 , r (water) = x By Snell's law r (air)*sin(angle of incidence...

1 Answers · Science & Mathematics · 30/10/2020

6. ### The International Space Station orbits Earth at about 350km above Earth's surface.?

...sure about your formula. centripetal acceleration = gravitational acceleration v² / ( R +h) = GM / ( R +h)² which leads to v = √(GM / ( R ...

1 Answers · Science & Mathematics · 27/10/2020

7. ### What is the minimum speed the bucket can travel so no water spills out?

Centripetal force must equal weight mV²/ r = mg V² = rg = 0.98•9.8 V = 3.05 m/s Centripetal force...

1 Answers · Science & Mathematics · 17/11/2020

8. ### In the figure, a 120 g ball on a 58.0 cm rope is swung in a vertical circle about a point 245 cm ?

minimum speed such that g = v²/ r v = √(gr) = √(9.81m/s² * 0.580m) = 2.39 m/s time to fall from h = (2.45...

1 Answers · Science & Mathematics · 30/10/2020

9. ### Cylinder capacity 4.25 L, cylinder diameter of 13 what is the height of the cylinder?

Let height of the cylinder =  h cm  and  R = Radius of the Cylinder Capacity of the cylinder  =  π...

2 Answers · Science & Mathematics · 09/11/2020

10. ### a) what is the centripetal acceleration of the stone? b) what is the tension on the chain?

a)a=  v^2 / r = 400/2 = 200 m/s^2 b) F = ma = 10 * 200 = 2000N  ( approximately 200kg weight equivalent assuming no mass is in the chain )

2 Answers · Science & Mathematics · 18/11/2020