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1. ### 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

2. ### F=GMm/r^2 help needed please?

r is the center to center distance of the two masses. If the ...

2 Answers · Science & Mathematics · 30/10/2014

3. ### How can an electric field of a dipole be like this when r>>a? Plz ans ASAP for sure & comprehensively. Thanks.?

At point r the positive charge on the right creates a field kq/(r-a)^2, this field ...the right direction. The negative charge creates a field of magnitude kq/(r+a)^2, and this field is pointed to the left. To get the net field...

5 Answers · Science & Mathematics · 31/01/2009

4. ### A cylindrical metal bar conducts heat at a rate R from a hot reservoir to a cold reservoir.?

R = k.A.∆θ / L R depends on area A .. doubling dia. increases R by factor 4 .. (A proportional to D²) R depends on 1...

1 Answers · Science & Mathematics · 17/11/2011

5. ### Relationship Between Boltzmanns Constant and R?

... the number of moles of moles in the gas, and so R relates the energy of a mole of molecules to the temperature. ...

4 Answers · Science & Mathematics · 13/01/2007

6. ### The gas constant, R in Arrhenius equation?

R is ion fact Avogadro's number multiplied by the...via Maxwell-Boltzmann statistics, if you must know, but essentially, R is slightly more fundamental than it initially appears.

1 Answers · Science & Mathematics · 31/10/2013

7. ### how is the formula for centrifugal force equal to mv^2/r?

...yet undetermined magnitude v and direction, draw an arc of a circle with radius of curvature r and draw a vector V1 tangent to that arc. The back of the vector ...

4 Answers · Science & Mathematics · 23/06/2011

8. ### How does one derive a=v^2/r?

...a long a circle would be given by <p> = <r*cos(Ө) , r*sin(Ө)> To get the velocity vector we take the...

1 Answers · Science & Mathematics · 06/05/2012

9. ### r1 = 1.2 m at 59 above +x axis, r2 = 7.3 m at 55 below +x axis. Find the angle of resultant of r = r1 + r2?

vector addition r = r1 + r2 resolve vector along (x) and (y) directions with respective unit vectors as (i) and (j) r(x) = r1 cos 59 (i) + r2 cos 55 (i) r(x) = 1.2 cos 59 (i) + 7.3 cos 55 (i) r(x) = [1.2 cos 59 + 7.3 cos 55] (i...

1 Answers · Science & Mathematics · 04/07/2007

10. ### How to Integrate d^2 r(t)/dt^2 = -MG r(t)^-2?

Multiply both sides by r'(t). Then we have r'r'' = -MGr'/r^2. ... expression. The extra factor of 2 comes from integrating r'r'' after multiplying each side by r'. So yes, it...

1 Answers · Science & Mathematics · 26/10/2014