When a pair of balanced forces acts on an object, the net force that results is?

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

What property of an object determines its inertia?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?