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PtichkaEL [24]
3 years ago
9

How many electrons make up a charge of 3.5kC?

Physics
2 answers:
vladimir1956 [14]3 years ago
7 0
Well now, I don't know !
Let's figure it out.

The charge on one electron is 1.60 x 10⁻¹⁹ Coulomb .

To get 3,500 Coulombs of charge, you'd need to
go around and collect

             (3,500) / (1.60 x 10⁻¹⁹)  electrons.

That's  2.19 x 10²²  of the little fellas.

That's a big number.  But what's REALLY amazing is the
mass and weight of that many electrons:

             Mass:    1.989 x 10⁻⁵ gram

             Weight:  about  0.0000007 ounce  !

That's not one electron.  That's the whole  <span>2.19 x 10²²  uvvum
that it takes to hold 3,500 Coulombs of charge.</span>
ollegr [7]3 years ago
6 0
21.8452851 * 10^21 e. Which is 21.845.285.100.000.000.000.000 electrons. A lot.
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Vesnalui [34]

Answer:

a) 75.5 degree relative to the North in north-west direction

b) 309.84 km/h

Explanation:

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So the pilot should head to the West-North direction at an angle of

cos(\alpha) = 80/320 = 0.25

\alpha = cos^{-1}(0.25) = 1.32 rad = 180\frac{1.32}{\pi} = 75.5^0 relative to the North-bound.

b) As the North component of the airplane velocity cancel out the wind south-bound speed. The speed of the plane over the ground would be the West component of the airplane velocity, which is

320sin(\alpha) = 320sin(75.5^0) = 309.84 km/h

7 0
3 years ago
Read 2 more answers
Paula has walked in a straight line, 30.5° north of west, for 1650 meters. How far south and east should she walks to return to
olchik [2.2K]
The answer is A.
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2 years ago
What's an acrostic poem for climate each line has to be written in a full sentence?
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3 years ago
Pahelp po ako.
NeTakaya
D bc thats sound like the only resonable answer
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U= \frac{1}{2}kx^2
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The work done by the spring is the negative of the potential energy difference between the final and initial condition of the spring:
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In our problem, initially the spring is uncompressed, so x_i=0. Therefore, the work done by the spring when it is compressed until x_f is
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