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dolphi86 [110]
3 years ago
12

WILL AWARD BEST ANSWER! find the current flowing across the 30 ohm resistor i = _ a

Physics
1 answer:
Lelu [443]3 years ago
6 0

0.143 A

Explanation:

The total resistance of the circuit is

r =  \frac{(40)(30)}{40 + 30}  +  \frac{(50)(20 + 10)}{50 + (20 + 10)}   \\ = 35.89 \: ohms

so the total current is

Itotal= V/R = 9V/35.89 ohms

= 0.25 A

To find the voltage drop across the 30-ohns resistor, use

V = Itotal × (combined resistance of 40 30)

= 0.25 A × 17.14 ohms = 4.285 volts

so the current through the 30-ohm resistor is

I = (voltage drop)/30-ohms

= (4.285 V)/(30 ohms)

= 0.143 A

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Answer:

Option C

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An object of mass kg is released from rest m above the ground and allowed to fall under the influence of gravity. Assuming the f
IgorLugansk [536]

Answer:

Explanation:

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Assuming that:

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Let's recall that:

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Similarly, The equation of mption:

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replacing our assumed values:

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x(t) = 0.981t+0.1 (0 - 0.981) (1-e^{-(10)t}) \ m

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So, when the object hits the ground when x(t) = 1000

Then from above derived equation:

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3 years ago
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dedylja [7]

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