1. The water in the plumbing in a house is at a gauge pressure of 400,000 Pa. What force does this cause on the top of the tank inside a water heater if the area of the top is 0.4 m²? (Ignore atmospheric pressure.)

2. A viewing window on the side of a large tank at a public aquarium measures 43 in. by 53 in. The average gauge pressure from the water is 7 psi. What is the total outward force on the window?

3.

A small statue is recovered in an archaeological dig. Its weight is measured to be 12.6 lb and its volume 0.06 ft³.

(a) What is the statue's weight density?

(b) What substance is it, most likely?

1. diamond

2. juniper

3. wood

4. iron

5. brass

6.ebony wood