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cluponka [151]
3 years ago
14

Two identical tiny spheres of mass m =2g and charge q hang from a non-conducting strings, each of length L = 10cm. At equilibriu

m, each string makes and angle θ =50 with the vertical. Find the size of the charge on each spere.

Physics
1 answer:
garri49 [273]3 years ago
8 0

Answer:

q = 7.88μC

Explanation:

In the diagram attached, you can visualize the situation. Separation distance between the 2 charges is:

D = 2*L*sin θ = 0.1532m

From a sum of forces on the X-axis:

T*sin \theta = Fe

And on the y-axis:

T*cos \theta = m*g   Solving for T and replacing its value on the X-axis equation we get:

m*g*tan \theta = Fe  Since Fe = \frac{K*q^2}{D^2}

m*g*tan \theta = \frac{K*q^2}{D^2}  Solving for q we get:

q = 7.88μC

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R=\frac{V}{I}

In order to calculate the current, we can use an amperemeter that must be in series with the circuit, this way it will not affect the circuit.

And in order to calculate the voltage, we can use a voltmeter that must be in parallel with the resistance, this way it will not affect the circuit.

The correct option that shows an amperemeter in series and a voltmeter in parallel is the fourth option.

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1 year ago
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Ivan

Answer:

40s

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3 years ago
What does it mean to say that a wave is a cyclic, or periodic, disturbance
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This motion of medium particles or this to and fro motion is about their mean position and this will always be cyclic or periodic motion

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y = A sin(\omega t + kx + \phi)

so here above equation of wave is a travelling wave in which displacement of medium particle from its mean position is given by "y"

Now we can see that this disturbance depends upon the sine function and it will repeat its same position after every 2 pi time interval as it is cyclic function for this value

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