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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

Unreasonable Results

A physicist scatters (rays from a substance and sees evidence of a nucleus 7.5 × 10 13 m in radius. (a) Find the atomic mass of such a nucleus. (b) What is unreasonable about this result? (c) What is unreasonable about the assumption?

To determine

(a)

The atomic mass of the nucleus.

Explanation

Given info:

The radius of the nucleus is

  r=7.5×1013m

The radius of proton is

  ro=1.20×1015m

Formula used:

The relation between atomic mass and radius is

  A=(r r o )3

Calculation:

Substituting the values

  A=( 7

To determine

(b)

The unreasonable result in mass of nucleus.

To determine

(c)

The cause of unreasonable mass number value

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