A solenoid with 3,000.0 turns is 70.0 cm long. If its self-inductance is 25.0 mH, what is its radius? (The value of μ0 is 4π x 1

0-7 N/A2 .) A. 0.02219 m B. 327 m C. 52 m D. 0.00199 m

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kicyunya [3294]

Answer:

The separation distance is $d = 0.092 \ m$

Explanation:

The mass of each ball is $m= 10 g = 0.01 \ kg$

The negative charge of each ball is $q_1 =q_2=q = 1 \mu C = 1 *10^{-6} \ C$

Since the lower ball is prevented from moving, it indicates that the net force acting on it equals zero.

This means that the gravitational force exerted on the lower ball balances the electrostatic force, represented as:

$F = \frac{kq_1 * q_2}{d}$

=> $m* g = \frac{kq_1 * q_2}{d}$

where k denotes Coulomb's constant, valued at $k = 9*10^{9} \ kg\cdot m^3\cdot s^{-4}\cdot A^2.$ .

Thus,

$0.01 * 9.8 = \frac{ 9*10^9 *[1*10^{-6} * 1*10^{-6}]}{d}$

$d = 0.092 \ m$

5 0

3 months ago

Softa [3030]

Look at the image for the solution

7 0

3 months ago