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Degger [83]
3 years ago
11

Scrie un eseu la tema:,,Rolul cîmpului magnetic al Pămîntului asupra omenirii

Physics
1 answer:
Savatey [412]3 years ago
5 0

Answer:

AREN'T

URGENT

NO

WHY

Explanation:

WHY

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Electrons in a particle beam each have a kinetic energy of 4.0 × 10 −17 J. What is the magnitude of the electric field that will
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Answer:

-833.3 N/C

Explanation:

Kinetic energy, K, in terms of electric field, E, is given as:

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E = Electric field

r = distance = 0.3m

The electric field can be gotten by making E subject of formula:

E = K/(qr)

The electeic field needed to stop the electrons must be equal in magnitude to the electric field carried by these electrons:

E = (4.0 × 10⁻¹⁷)/(-1.6 × 10⁻¹⁹ * 0.3)

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This is the electric field needed to stop the electrons.

The negative sign means that the electric field must be in a direction opposite to the motion of the electrons.

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