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Serjik [45]
3 years ago
13

3. Rock A is thrown horizontally off of a cliff with a velocity of 20 m/s. The

Physics
1 answer:
Anna11 [10]3 years ago
4 0

Answer:

44.1 m

Explanation:

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A human being can be electrocuted if a current as small as 55 mA passes near the heart. An electrician working with sweaty hands
evablogger [386]

Answer:

The lethal voltage for the electrician under those conditions is 126.5 V.

Explanation:

To discover what is the lethal voltage to the electrician we need to find out what is the voltage that produces 55 mA = 0.055 A when across a resistance of 2300 Ohms (Electrician's body resistancy). For that we'll use Ohm's Law wich is expressed by the following equation:

V = i*R

Where V is the voltage we want to find out, i is the current wich is lethal to the electrician and R is his body resistance. By applying the given values we have:

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The lethal voltage for the electrician under those conditions is 126.5 V.

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3 years ago
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Answer:

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Explanation:

Given parameters:

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Unknown:

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Dust settling out of the air<br> chemical change or physical change
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