Ineed fast!

the best example of diffraction is the image of

a) a ring around the sun caused by particles in the air.

b) a pencil that appears broken in a glass of water.

c) a fingerprint that appears to be enlarged under a magnifying glass.

d) a reflection in the mirror

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

All forces cause motion? true or false