2 years ago

A scientist that applies the laws of science to the needs of communities is called _____.

Physics

1 answer:

s2008m [1.1K]2 years ago

5 0

Answer:

The experimental scientist

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Answer:

8.08 x 10^-5 m

Explanation:

A = 2 mm^2 = 2 x 10^-6 m^2

Total number of electrons, N = 9.4 x 10^18

time, t = 3 s

n = 5.8 x 10^28 electrons/ m^3

Current, i = Q / t = N x e / t = (9.4 x 10^18 x 1.6 x 10^-19) / 3 = 0.5 A

Let vd be the drift velocity.

i = n e A vd

0.5 = 5.8 x 10^28 x 1.6 x 10^-19 x 2 x 10^-6 x vd

vd = 2.7 x 10^-5 m/s

Distance traveled by the electrons = velocity x time

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B) Applied and gravitational forces

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The heater element of a 120 V toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. The resistivity of nichrome

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Answer:

The power drawn by the toaster is closest to:

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$P=\frac{V^2}{R} =\frac{120^2}{38.7940} =371.191 Watts$

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The speed would be in a decimal? Or do you want it in a fraction?

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