10. Michael walks 10m north, 3m west, 5m south, 12m east, and then stops to catch his breath. What is the magnitude of his displacement from his original point?
a.
11.30m b. 1.11m c. 10.30m
d. 20.45m
e. .32m

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.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2