Chapter 28, Problem 3P

(a)

To determine

The mass of a gold foil which is 0.010 cm thick, having area $1\text{ cm}\times 1\text{ cm}$, when the density of gold is $19,300{\text{ kg/m}}^3$.

(b)

To determine

The number of gold atoms in the foil when the mass of each atom is $3.27\times {10}^{-25}\text{ kg}$.

(c)

To determine

The area of a circle if the radius of a gold nucleus is $7\times {10}^{-15}\text{ m}$.

(d)

To determine

The probability that an alpha particle passing through the gold foil which is $0.010\text{ cm}$ thick, having area $1\text{ cm}\times 1\text{ cm}$, will hit a gold nucleus of radius $7\times {10}^{-15}\text{ m}$.