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3 years ago

6

Margaret walks to the store using the following path 0.630 mi west, 0.370 mi north, 0.180 mi east. assume north to be along the

+y-axis and west to be along the -x-axis. what is the magnitude of her total displacement?

1 answer:

svp [43]3 years ago

3 0

Answer:

d = 0.583 mi

Explanation:

d = √((-0.630 + 0.180)² + 0.370²)

d = √(-0.450² + 0.370²) = 0.582580... = 0.583 mi

direction would be arctan(0.370/ -0.450) = 39.42780... = 39.4° N of W

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Answer:

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Explanation:

From the question we are told that

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The potential difference is $V = 12 \ V$

The permitivity of free space is $\epsilon_o = 8.85 *10^{-12} C^2 \cdot N^{-1} \cdot m^2$

The dielectric constant of glass is K = 5.0

Generally the capacitance of this capacitor is

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substituting values

$C = \frac{8.85*10^{-12} * 0.40}{0.0001}$

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The charge stored is mathematically evaluated as

$Q = CV$

substituting values

$Q = (3.54*10^{-8} * 12)$

$Q = 4.25 *10^{-7 } \ C$

The energy stored is

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$E = 0.5 * (4.25 *10^{-7} * 12^2)$

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