Plzzz what forms a dune and a sandbar? select one: a. a sandbar is formed by wind. a sand dune is formed by water. b. a sandbar is formed by water. a sand dune is formed by wind. c. both are formed by wind. d. both are formed by water.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3