4 years ago

Agora elimine os parênteses dessas expressões

Physics

1 answer:

Reil [10]4 years ago

3 0

Answer:

wurk wurk dont stop yes maam or yes sirrrrr

Explanation:

periodt cheat then sis

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A piece of amber is charged by rubbing with a piece of fur. If the net excess charge on the fur is +8.0 nC (+8.0 10-9 C), how ma

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Answer:

Number of electron on the fur will be $5\times 10^{10}electron$

Explanation:

We have given net charge on the fur $q=8nC=8\times 10^{-9}C$

Charge on one electron $e=1.6\times 10^{-19}C$

Let there are n number of electrons

So $ne=8\times 10^{-9}$

$n\times 1.6\times 10^{-19}=8\times 10^{-9}$

$n=5\times 10^{10}electron$

So number of electron on the fur will be $5\times 10^{10}electron$

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Which of the following statements is true about static electricity?

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3 years ago

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While in a park, you walk west for 52 m, then you walk 34.6° north of west for 44 m, and finally you walk due north for 25 m. Fi

Georgia [21]

Answer:

88m west and 50m north

Explanation:

1. Find the components of each vector in x and y:

(Please see the picture below)

- Vector 1:

Fx = 52m

Fy = 0m

- Vector 2:

Fx = 44m*cos34.6

Fy = 44m*sin34.6

- Vector 3:

Fx = 0m

Fy = 25m

2. Find the components of the final displacement acting in x and y:

For west direction:

Rx = 52m + 44m*cos34.6 + 0

Rx = 88m

For north direction:

Ry = 0 + 44m*sin34.6 + 25m

Ry = 50m

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Society wants scientific evidence to prove what is true about the universe.

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