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1. ### 2 runers initially standing 2gthr runaway frm each othr with the same speed v,after20s are 360m apart.Wat isV ?

2( v x 20) = 360 40 v = 360 v = 9 m/s

2 Answers · Science & Mathematics · 26/12/2012

2. ### A vertical spring (ignore its mass), whose spring stiffness constant is 900 N/m, is attached to a table and is?

The potential energy of the compressed spring isV = 1/2 k x^2. This potential energy all is converted into mechanical...

2 Answers · Science & Mathematics · 06/06/2011

3. ### Find the velocity and acceleration as functions of t?

s = t^3 - 3*t v(t) = ds/dt = 3t^2 - 3 a(t) = dv/dt = 6*t a(2) = 6*2 = 12 m/s^2 v = 0 = 3t^2 - 3 t^2 = 3/3 t^2 = 1 t=+1 t = - 1 has no meaning. at t=1 the acceleration is a(1) = 6*1 = 6 m/s^2

1 Answers · Science & Mathematics · 28/09/2011

4. ### Find the total potential at the location P.?

You can do this question by using the superposition principle for potential. The net potential thus isV =k[q/2d+q/d+(-q/d)+-q/d)]=-kq/d, where k=1/4(pi)(epsilon).Therefore, V=-9x(10^9)x2.2x(10^-6)/0.61=32.46x(10^3) V.

1 Answers · Science & Mathematics · 12/02/2008

5. ### Help with deriving a physics equation?

... Energy is zero (car starts from rest) this isv written; W = (1/2)mv^2 By definition, Power is...

1 Answers · Science & Mathematics · 18/01/2011

6. ### What movie magic (an event that the laws of physics prove could not happen) is shown in the movie Avatar?

...screen was well thought out. Remember that interstellar spacecraft ( ISV Venture Star) that you saw in the first minute of the...

5 Answers · Science & Mathematics · 16/05/2010