Which best explains why the diagram shows refraction but not reflection? a. it shows an incident ray. b. it shows that the ray is changing direction. c. it shows the ray passing through the boundary. d. it shows that angles form between the rays and the normal.

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 = 2.1 m below the tank bottom which is a = 7.4 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)

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader