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3 years ago

7

If element X has 17 protons, how many electrons does it have?

1 answer:

OleMash [197]3 years ago

3 0

18 electrons because protons minus the atomic mass so it would be 35-17 which gives you 18.

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The electric current running through the wire coil in an electric motor exerts force directly onto

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C) A powerful magnet

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Your friend says that if Newton’s third law is correct, no object would ever start moving. Here is his argument: You pull a sled

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3 years ago

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3 years ago

Calculate the acceleration of a helium nucleus (charge +2e, where e-electronic charge), when it enters an electric field of stre

konstantin123 [22]

Answer:

3.8 x 10^10 m/s^2

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Charge, q = 2 e = 2 x 1.6 x 10^-19 C = 3.2 x 10^-19 C

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the force due to electric filed on a charge particle is given by

F = q x E

Where, q be the charge on the charged particle and E be the strength of electric field.

By substituting the values

F = 3.2 x 10^-19 x 790

F = 2528 x 10^-19 N

According to the Newton's second law

F = m x a

Where, me be the mass and a be the acceleration

By substituting the values

$2528\times 10^{-19}=6.645\times 10^{-27}\times a$

a = 3.8 x 10^10 m/s^2

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3 years ago