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nikitadnepr [17]

3 years ago

8

When a 1.50V battery is shorted by a copper wire whose resistance can be ignored, the current through the copper wire is 2.75 A.

What is the internal resistance of the battery?

1 answer:

viva [34]3 years ago

5 0

Answer:

Internal resistance = 0.545 ohm

Explanation:

As per ohm's law we know that

$V = iR$

here we know that

i = electric current = 2.75 A

V = potential difference = 1.50 Volts

now from above equation we have

$1.50 = 2.75 ( R)$

now we have

$R = \frac{1.50}{2.75}$

$R = 0.545 ohm$

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A boat with a mass of 1000 kg drifts with the current down a straight section of river parallel to the +x+x axis with a speed of

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Answer:

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4 years ago

A plane is flying due west at 34 m/s. It encounters a wind blowing at 19 m/s south. Find the resultant veloci

Drupady [299]

Answer:

<em>The resultant velocity has a magnitude of 38.95 m/s</em>

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<u>Vector Addition</u>

Given two vectors defined as:

$\vec v_1=(x_1,y_1)$

$\vec v_2=(x_2,y_2)$

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$\vec v=(x_1+x_2,y_1+y_2)$

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The sum of both velocities gives the resultant velocity:

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3 years ago