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oksano4ka [1.4K]
3 years ago
12

What force is produced when a battery causes an electric current to flow trough a circuit made of copper wire

Physics
1 answer:
zzz [600]3 years ago
7 0
You'll hear that force called different things in different places. It
may be called "electromotive force", "EMF", "potential difference",
or "voltage".

It's just a matter of somehow causing the two ends of the wire
to have different electrical potential. When that happens, the
free electrons in the copper suddenly have a burning desire to
travel ... away from the end that's more negative, toward the end
that's more positive, and THAT's an "electric current".
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Irina18 [472]
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4 0
3 years ago
A girl and a boy are riding on a merry-go-round that is turning at a constant rate. The girl is near the outer edge, and the boy
masha68 [24]

Answer:

A. Both the girl and the boy have the same nonzero angular displacement.

Explanation:

Since girl and boy both are standing on the same merry go round so here we can say that boy and girl both will revolve with same angular speed as the speed of the merry go round

so the angular displacement is given as

\theta = \omega t

so here since both has same angular speed that is the speed of the disc so they both will turn by same angle in the same interval of time

So we have correct answer as

A. Both the girl and the boy have the same nonzero angular displacement.

4 0
3 years ago
The charge on an electron is −1.6×10−19 C. The charge on a proton is equal in magnitude, but positive. The electron's mass is 9.
prisoha [69]

A) The acceleration of the electron is 1.0\cdot 10^{23} m/s^2 towards the proton

B) The electric field magnitude at the electron's location is 5.76\cdot 10^{11} N/C

C) 2. The electric field in an atom is much greater than the dielectric strength of air

Explanation:

A)

In order to find the acceleration of the electron, we need to find the force acting on it first.

The force on the electron is the electrostatic force between the proton and the electron, which is given by:

F=k\frac{q_1 q_2}{r^2}

where:

k=8.99\cdot 10^9 Nm^{-2}C^{-2} is the Coulomb's constant

q_1 = 1.6\cdot 10^{-16}C is the charge of the proton

q_2 = -1.6\cdot 10^{-19}C is the charge of the electron

r=5.0\cdot 10^{-11}m is the distance between the electron and the proton

Substituting,

F=(8.99\cdot 10^9) \frac{(1.6\cdot 10^{-19})(-1.6\cdot 10^{-19})}{(5.0\cdot 10^{-11})^2}=-9.2\cdot 10^{-8} N

where the negative sign indicates the direction of the force is towards the proton (attractive).

Now we can find the acceleration of the electron using Newton's second law:

a=\frac{F}{m}

where

F is the force

m=9.11\cdot 10^{-31} kg is the electron mass

Substituting,

a=\frac{-9.2\cdot 10^{-8}}{9.11\cdot 10^{-31}}=-1.0\cdot 10^{23} m/s^2

where the negative sign means the direction is towards the proton.

B)

The magnitude of the electric field due to a single-point charge is given by

E=k\frac{q}{r^2}

where

k=8.99\cdot 10^9 Nm^{-2}C^{-2} is the Coulomb's constant

q is the charge

r is the distance from the charge at which the field is calculated

Here we have:

q=1.6\cdot 10^{-19}C (proton charge)

r=5.0\cdot 10^{-11} m (location of the electron with  respect to the proton)

Therefore, the magnitude of the electric field is

E=(8.99\cdot 10^9)\frac{1.6\cdot 10^{-19}}{(5.0\cdot 10^{-11})^2}=5.76\cdot 10^{11} N/C

C)

The electric field at which the air begins to spark is

E_b = 3\cdot 10^6 N/C

While the electric field in the atom (at the location of the electron), calculated in part B, si

E=5.76\cdot 10^{11} N/C

By comparing the two fields, we observe that

E_b

which means that the correct statement is

2. The electric field in an atom is much greater than the dielectric strength of air

Learn more about atoms:

brainly.com/question/2757829

#LearnwithBrainly

6 0
3 years ago
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sergiy2304 [10]

Answer:

It is spinning, making the ball a little more airborn than the one that isn't spinning

6 0
3 years ago
The reaction of magnesium ribbon with oxygen.what is the product formed?
zaharov [31]
When oxygen reacts with magnesium thenMgO3 is formed.

Mg +O2----> MgO3
6 0
3 years ago
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