Atomic number of of silver metal is 47. calculate the speed at which a beam of protons has to be fired at a sheet of silver foil if the protons were able to approach to whithin `2.5xx10^(-14)` m of the silver nucleus?

Explanation

To solve the problem of calculating the speed at which a beam of protons has to be fired at a sheet of silver foil, we will use the principles of electrostatics and conservation of energy. Here’s a step-by-step solution:

### Step 1: Identify the Given Data
- Atomic number of silver (Z) = 47
- Distance from the nucleus (r) = \(2.5 \times 10^{-14}\) m
- Mass of a proton (m) = \(1.67 \times 10^{-27}\) kg
- Charge of a proton (e) = \(1.6 \times 10^{-19}\) C

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