Calculate the energy from the Sun falling on a football pitch of dimensions 106 m × 68 m in 90 minutes. - Leaving Cert Physics - Question e - 2015

The area of the football pitch can be calculated using the formula for the area of a rectangle:

$A = \text{length} \times \text{width} = 106 \text{ m} \times 68 \text{ m} = 7208 \text{ m}^2$

The energy from the Sun that falls on the area can be determined using the energy formula:

$E = 5.3 \times 10^4 \text{ J/m}^2 \text{s} \times 7208 \text{ m}^2 \times 5400 \text{ s}$ Evaluating this, we get:

$E = 5.3 \times 10^4 \text{ J/m}^2 \times 7208 \text{ m}^2 \times 5400 \text{ s}$