Draco malfoy? anyone?

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th