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1. ### A marble of mass m and radius r rolls along the looped rough track of the figure. Ignore frictional losses....?

R denotes Radius of loop, r denotes radius of sphere a...gt; I (moment of Inertia of sphere) = 2/5mr^2 --> v= r *w (omega denotes angular velocity) therefore w=v/ r --> at top of...

1 Answers · Science & Mathematics · 28/11/2010

2. ### v=kQ/ r ????????????????????

description of r : look at the figure where potential is required at point P ...)----------------------. (P) .... <----------- r ---------> r & Q are given k = 8.987 X 10^9 N...

3 Answers · Science & Mathematics · 01/02/2011

3. ### Consider the circuit shown in the figure below, in which V = 3 V and R = 11 . Find and tabulate the current th?

The R , 16, & 48 are parallel so 1/Req = 1/11 + 1/16 + 1/48 = 0.1742 ... = 8.74Ω So the current through the 3Ω = V/ R = 3/8.74 = 0.343A and V (3) = 0.343*3 = 1.03V Now...

2 Answers · Science & Mathematics · 01/06/2010

4. ### Dynamics - A solid sphere of mass M and radius R ?

... a short time interval dt, the particle has covered a distance pi R t/T, and so has covered a latitude angle measured from...

2 Answers · Science & Mathematics · 26/01/2010

5. ### Please answer my calculus question below which is about scalar line integrals in ( R ^3)?

r '(t) = <-2 sin t, 0, 2 cos t>. || r '(t)|| = √(4 sin²t + 4 cos²t) = 2, since sin²t + ...

2 Answers · Science & Mathematics · 13/11/2011

6. ### is current decay dependent on R or C or both?

Dependent R and C Go here http://images.google.fr/imgres...

1 Answers · Science & Mathematics · 12/12/2009

7. ### Average rate of change R (t) = 30t − 3t^2; t = 3?

R (t+h)= 30t+30h-3t^2-6th-3h^2 (substituting t=t+h in your given equation) the average rate of change of R (t) would be given by R (t+h)- R (t)/((t+h)-t) = R (t+h...

1 Answers · Science & Mathematics · 17/12/2012

8. ### an electric field, E=1/ r ^2 Nm^2/C is located in the xy-plane. what is the potential difference between r =6m?

Taking definite integration of given Electric field equation for r =6m to r =8m r =8m we have potential difference V.D=ʃ( E.dr)=1/24 Nm^3/C r =6m

2 Answers · Science & Mathematics · 08/02/2012

9. ### A spherically symmetric charge distribution produces the electric field E( r )= 6000r^2 , where r is in m.?

The formula is wrong; it should be: E( r )= 6000/r² This could also be written...symmetric charge distribution produces the electric field E( r )= 6000/r², where r is in m and E ...

5 Answers · Science & Mathematics · 07/06/2013

10. ### Convert r =sin(4theta) into rectangular form. Please! :(?

r =sin 4A r = sq root [x^2 +y^2] r ^2 = x^2 +y^2 since sin 4A = y / r so r = y / r r ^2 = y x^2 +y^2 = y ---answer

2 Answers · Science & Mathematics · 31/05/2011