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Makovka662 [10]
3 years ago
6

1. A car with a mass of 2500 kg accelerates when the traffic light turns green. If the net force

Physics
1 answer:
soldier1979 [14.2K]3 years ago
5 0

;Net force = mass of the body × acceleration of the body due to the net force

; 5000 = 2500 a...then divide both sides by 2500

; acceleration(a) = 2 m/s^2

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A copper wire has a diameter of 2.097 mm. what magnitude current flows when the drift velocity is 1.54 mm/s? take the density of
frozen [14]

By using drift velocity of the electron, the current flow is 7.20 ampere.

We need to know about drift velocity of electrons to solve this problem. The drift velocity can be determined as

v = I / (n . A . q)

where v is drift velocity, I is current, n is atom number density, A is surface area and q is the charge.

From the question above, we know that

d = 2.097 mm

r = (0.002097 / 2) m

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q = e = 1.6 x 10¯¹⁹C

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n = 6.022 x 10²³ x 8.92 x 10³ / 0.635

n = 8.46 x 10²⁷ /m³

Find the current flows

v = I / (n . A . q)

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I = 7.20 ampere

For more on drift velocity at: brainly.com/question/25700682

#SPJ4

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