Problem 2: (15 pts) a 10-m high cylindrical container is half-filled at the bottom with water of density =1000 kg/m3 while the top half is filled with oil of specific gravity of 0.85. what is the pressure difference between the top and bottom of the container?

Explanation:

specific gravity of oil is

we know that

change in pressure  for oil is given as

here density and h is for oil

change in pressure  for WATER is given as

here density is for water and h is for water

pressure change due to both is given as

answer: option c.

explanation:

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft