A light beam coming from an underwater spotlight exits the water at an angle of 74.9 ∘ to the vertical.

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .