What is the actual pressure at a depth of 125 m in a dam? State your answer in m H. O and pascal.
[Atmospheric pressure = 10.3 m H2O, density of water, p = 1 000 kg m and
gravitational acceleration, g = 9.81 m s]​

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Am i correct on these two physics questions?