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Anestetic [448]

3 years ago

8

How much charge is on each plate of a 3.00-Î¼F capacitor when it is connected toa 15.0-V battery? b) If this same capacitor is c

onnected to a 2.00-V battery, what charge is stored?

1 answer:

Sauron [17]3 years ago

6 0

Answer:

(a) 45 micro coulomb

(b) 6 micro Coulomb

Explanation:

C = 3 micro Farad = 3 x 10^-6 Farad

V = 15 V

(a) q = C x V

where, q be the charge.

q = 3 x 10^-6 x 15 = 45 x 10^-6 C = 45 micro coulomb

(b)

V = 2 V, C = 3 micro Farad = 3 x 10^-6 Farad

q = C x V

where, q be the charge.

q = 3 x 10^-6 x 2 = 6 x 10^-6 C = 6 micro coulomb

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The magnitude of the resultant force on the balloon is 374.13 N.

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2 years ago

A 0.29 kg particle moves in an xy plane according to x(t) = - 19 + 1 t - 3 t3 and y(t) = 20 + 7 t - 9 t2, with x and y in meters

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Answer:

Part a)

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Part b)

$\theta = -137.7 degree$

Part c)

$\theta = -127.7 degree$

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So here we know that

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$a_x = \frac{d^2}{dt^2}(-19 + t - 3t^3)$

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$a_x = -18t$

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$a_y = \frac{d}{dt}(0 +7 - 18t)$

$a_y = -18$

Now the acceleration of the object is given as

$\vec a = (-18t)\hat i + (-18)\hat j$

at t= 1.1 s we have

$\vec a = -19.8 \hat i - 18 \hat j$

now the net force of the object is given as

$\vec F = m\vec a$

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Part b)

Direction of the force is given as

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$\theta = -137.7 degree$

Part c)

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$v_x = \frac{dx}[dt}$

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now the direction of the velocity is given as

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3 years ago

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3 0

3 years ago