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1. ### What happens if gravity accelerates a object to a speed faster than light?

... following is the General Relativity equation for 4-acceleration: aᵏ = d²xᵏ⁄dτ² = -⌈ᵏᵤᵥ(...

9 Answers · Science & Mathematics · 04/11/2019

...p/p0)=10 log(0.5*10^6/20)=60 *0.025=1.5 Wave length= 343/349=0.12 m For the pressure equation you need the amplitude value. I have to guess Wave=sqrt(0.)5 sin wt, pressure will...

2 Answers · Science & Mathematics · 22/10/2019

3. ### I need physics help?

0 = 24m + (7 m/s)t - (1/2)(9.8 m/s^2)t^2 => 4.9 t^2 - 7 t - 24 = 0 => t = use quadratic formula and pick only the positive answer for t.

3 Answers · Science & Mathematics · 14/10/2019

4. ### Help 10 points?

25 mile/hr = 6.94 m/sec 6 mile/hr = 1.67 m/sec deceleration = (1.67 m/sec - 6.94 m/sec) / 10 sec = -0.53 m/sec^2

2 Answers · Science & Mathematics · 29/09/2019

5. ### Physics Help!!!!?

This is just a straightforward kinematics problem.  You just need to take care with the units.  I use the suvat symbols. s = displacement...

2 Answers · Science & Mathematics · 25/09/2019

6. ### pls help me asap?

...release does the mailbag reach the ground?  we need height and speed at t=4 h(4) = 1.1•4³ = 70.4 m v = h'.../2g = 52.8²/2•9.8 = 142.2 m time for that t = v/g = 52.8/9.8 = 5.39 s it reaches...

1 Answers · Science & Mathematics · 18/09/2019

7. ### What is the rpm of an electron whizzing around an atom?

...behave that way, the path lengths will vary according to the orbital. you need to define a unit distance for a root-mean square "revolution" and divide the speed of light by that value to get the average rpm. It is not obvious to ...

3 Answers · Science & Mathematics · 18/09/2019

8. ### Hi guys, i need a bit of help with an physics assigment ( can't solve it and my brother needs it for tomorrow)?

f’ = observed frequency f = source frequency v = speed of sound vₛ = source’s speed= 72 km/h = 20m/s v₀ = observer’s speed = 32km...

3 Answers · Science & Mathematics · 17/09/2019

9. ### Physics webassign help?

Welcome to Yahoo!Answers. Let's call the time for the rock to fall "t"; then the time for the sound to return from the bottom of...

3 Answers · Science & Mathematics · 14/09/2019

10. ### Physics HELP?

... = 0.16² + v² for v in m/s and so v = 0.61 m/s ◄ The bee needs to build in a easterly component to ...wind. So his resultant southerly speed is v - 0.63m/s * cos15º...

1 Answers · Science & Mathematics · 12/09/2019