Im going to give 15 points for this question please answer it

Mathematics

1 answer:

pochemuha3 years ago

6 0

I think it is either 4.41 or 1.84 Sq Ft

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An electret is similar to a magnet, but rather than being permanently magnetized, it has a permanent electric dipole moment. Sup

Bumek [7]

Answer:

In this question, we need to find the magnitude of the electric force on the ball; the answer is $9.21$ $*$ $10^{-3}$ N.

Step-by-step explanation:

To resolve this question, we're going to need E= $\frac{k(2p)}{r3 }$ that is the magnitude of an electric field in the axis of a dipole at some distance "r" .

where "p" is the magnitude of the electric dipole moment, so in this case p= 1.0 $*$ $10^{-7}$ Cm or what is the same $10^{-7}$ cm; and k is a constant k value is = $k=8.99$ $*$ $10^{9}$ $\frac{Nm2}{C2}$

now to get the force on the ball we need to use F=qE where $E=$ $\frac{k(2p)}{r3 }$

so we have

$F= q*$ $\frac{k(2p)}{r3 }$

for this, "q" is the charge on the ball, so we got 80nC or what si the same 80× $10^{-9}$ C, and r is the distance between the ball and the dipole, r= 25cm= 0.25m (1m=100cm, so we need to divide 25cm into 100 to get it in meters)