An object is submerged in a swimming pool and of course the water ...

[fagboi]

An object is submerged in a swimming pool and of course the water exerts a buoyant force on the object. Suppose a thousand gallons of oil is spilled into the pool and now floats above the water.
 
  How is the buoyant force on the object changed by the overlying oil?

Question 2

You fall, while skiing, and one ski (of weight W) loosens and slides down an icy slope (assume no friction), which makes an angle  with the horizontal. The force that pushes it down along the hill is
 
  A) W.
  B) W cos .
  C) zero; it moves with constant velocity.
  D) W sin .
  E) W tan .

[mathjasmine]

Answer to Question 1

No change at all as long as the density of the water remains unchanged. After all, the buoyant force depends upon the volume displaced and the DENSITY of the water.

Answer to Question 2

D

[fagboi]

Excellent

[FergA]

TYSM