How does sound energy travel? A- By sound circles
B- By sound drums
C- By sound lines
D- By sound waves

D is the correct option you can see it by oscilloscope

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.