13 Justify Why can a ray be used to represent light in a ray diagram?
A Light waves are electromagnetic waves.
B Light waves spread out in all directions.
C Light waves travel in straight lines.
D Light waves can be reflected or refracted.

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

What are atoms of the same element with varying number of neutrons

What is special about a dc circuit ?