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sweet-ann [11.9K]
3 years ago
6

How many miles is 20,500 ft?

Physics
1 answer:
kap26 [50]3 years ago
4 0

3.8825757575758 miles

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When something is transparent, it means that it allows light to pass through or is see-through . For example:

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When operated on a household 110.0 V line, typical hair dryers draw about 1650 W of power. The current can be modeled as a long,
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Explanation:

Given that,

Voltage of household line, V = 110 V

Power of the hairdryer, P = 1650 W

During use, the current is about 1.95 cm from the user's hand.

(a) Power is given by :

P=V\times I\\\\I=\dfrac{P}{V}\\\\I=\dfrac{1650\ W}{110\ V}\\\\I=15\ A

(b) Again the power is given by :

P=\dfrac{V^2}{R}

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R=\dfrac{V^2}{P}\\\\R=\dfrac{(110)^2}{1650}\\\\R=7.34\ \Omega

(c) The magnetic field produced by the dryer at the user's hand is given by :

B=\dfrac{\mu_o I}{2\pi r}\\\\B=\dfrac{4\pi \times 10^{-7}\times 15}{2\pi \times 1.95\times 10^{-2}}\\\\B=1.53\times 10^{-4}\ T

Hence, this is the required solution.

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3 years ago
1. A ball falls from a height "h" from a tower. Which of the following statements is true?
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the total kinetic and potential energy of the ball is constant (mechanical energy remains the same)

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3.07 m/s

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