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Q. 24

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1082

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Short Answer

Consider the lead isotope .

a. How many electrons, protons, and neutrons are in a neutralatom?

b. The lead nucleus has a diameter of . What is the electric field strength at the surface of a lead nucleus?

a. In neutral number of neutrons are, number of protons are and the number of electrons are.

b. The electric field strength at the surface of the nucleus is.

See the step by step solution

Step by Step Solution

Part (a) step 1: Given information 

We have to find that How many electrons, protons, and neutrons are in a neutral atom.

Part (a) step 2: Simplify 

Start the solution by determining the proton number:

(from Periodic Table of Elements)

Putting the values

Here, is the atomic number, A is the mass number and N is the neutron number.

Part (b) step 1: Given information 

We have to find that the electric field strength at the surface of a lead nucleus.

Part (b) step 2: Simplify 

The expression for the electric field of the point charge:

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