Which labels belong in the areas marked X, Y and Z x is convex lens

Y is both

Z is concave lens

Describe the path of a ray that approaches a mirror parallel to the principal axis.

How is the gravitational force related to the distance between two objects?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.