PLEASE HURRY! I AM BEING TIMED! Which statements correctly describe theories? Check all that apply.

All theories that scientists could discover have already been written. Theories develop over time as new scientific evidence is discovered. Parts of theories cannot be disproved, but new parts can be added. Theories and laws are the same types of rules about how nature works. Theories can be changed when new fields of scientific study develop.

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine