Question

Show all calculations. Give answers in correct UNITS to three significant digits.

1. Some planetary scientist believe Mars may have had an ocean that was 0.450 km deep. The acceleration of gravity (“g”) on Mars is 3.71 m/s^2. Determine:

a. The gauge pressure at the bottom of the Mars ocean. (assume freshwater)

b. The depth of an ocean on Earth to achieve the same gauge pressure

2. A diving bell is designed to dive 250 m below the sea (Earth). Determine:

a. The absolute pressure at a depth of 250 m

b. The force exerted upon a circular window on the diving bell of radius 20.0 cm. (Assume atmospheric pressure inside the diving bell.)

3. An eardrum can rupture if the force exerted upon it exceeds 1.60 N. Assume that an eardrum has a diameter of 8.00 mm. At what depth will an eardrum of a diver in seawater rupture?

Answer 1