Final answer:
The pressure exerted by an elephant on the ground is calculated using the formula pressure = force ÷ area. With a force of 30000 N and an area of 750 cm² (0.075 m²), the elephant exerts a pressure of 400 kPa on the ground.
Step-by-step explanation:
The student is asking about the pressure exerted by an elephant on the ground. To find this, we use the pressure formula, which is pressure = force ÷ area.
In this case, the force given is 30000 N and the total area of the elephant's feet is 750 cm². To use the formula, we need to convert the area from cm² to m² because the standard SI unit for pressure is pascals (Pa), and 1 Pa is equivalent to 1 N/m². There are 10,000 cm² in a m², so 750 cm² is equivalent to 0.075 m².
Now, we can calculate the pressure using the formula:
Pressure = 30000 N ÷ 0.075 m² = 400,000 Pa or 400 kPa.
Therefore, the pressure exerted by the elephant on the ground is 400 kPa.