Question

9. A book with a weight of 12 N rests on

its back cover. If the back cover
measures 21 cm by 28 cm, how much
pressure does the book exert?

Answer 1

The answer to your problem is, D, 204 Pa

Explanation:

If.

Weight of book = 12 N

Area of book = 0.21 m × 0.28 m = 0.0058 m²

Pressure of book = ? ( We need to find out " ? " )

Formula of Operation:

pressure = force / area

P = f/ A

Put it now in values:

P = 12 N/ 0.0058 m²

P= 204 Nm⁻² ( Nm⁻²= Pa)

P = 204 Pa

Thus the answer to our problem is, 204 Pa