Why does a submarine rise when its volume is increased?
a. because it now weighs less
c. because it fills with air
b. because its density is now lower than the water around it
d. because it is less buoyant when it is larger

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical