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3 years ago

what is the electrical potential at the surface of gold nucleus? The radius of a gold atom is 6.6*10

Physics

1 answer:

MaRussiya [10]3 years ago

3 0

Complete question is;

What is the electrical potential at the surface of gold nucleus? The radius of a gold atom is 6.6 × 10^(-5) m and atomic number z = 79.

Answer:

172.36 × 10^(-5) V

Explanation:

We are given;

Radius; r = 6.6 × 10^(-5) m

Atomic number; Z = 79

Formula for Electric potential here is;

V = kZe/r

Where;

e is charge on proton = 1.6 × 10^(-19) C

k has a constant value of 9 × 10^(9) N⋅m²/C²,

Thus;

V = (79 × 1.6 × 10^(-19) × 9 × 10^(9))/(6.6 × 10^(-5))

V = 172.36 × 10^(-5) V

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3 years ago

The force of attraction between a -130.0 C and +180.0 C charge is 8.00 N. What is the separation between these two charges in me

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Applying the given values in the above relation we get

$8=9\times 10^{9}\times \frac{130\times 180}{r^{2}}\\\\r^{2}=\frac{9\times 10^{9}\times 130\times 180}{8}\\\\r^{2}=26325\times 10^{9}\\\\\therefore r=\sqrt{26325\times 10^{9}}=5.131\times 10^{6}meters$

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3 years ago

A runner traveled 15 kilometers north then backtracked 11 kilometers south before stopping. His resultant displacement was

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Resultant displacement is 4 km north.

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Let east represents positive x- axis and north represent positive y - axis. Horizontal component is i and vertical component is j.

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4 years ago

Read 2 more answers

what is the electrical potential at the surface of gold nucleus? The radius of a gold atom is 6.6*10​

what is the electrical potential at the surface of gold nucleus? The radius of a gold atom is 6.6*10