Which statement does not correctly describe a theory?

A. It is based on scientific evidence.

B. It can be used to make predictions.

C. It can be modified as new discoveries are made.

D. It is directly testable.

How is an electromagnet different from a bar magnet? A) Only a bar magnet has a magnetic field. B) Only an electromagnet attracts materials made of iron.

State Einsiein's equation of photoelectric effect and what conservation principle does Einstein's equation represent

A person bounces up and down on a trampoline, while always staying in contact with it. The motion is simple harmonic motion, and it takes 1.90 s to complete one cycle. The height of each bounce above the equilibrium position is 45.0 cm.

How many particles are there in 111.6 g of iron?

Large vehicles need more room to make turns. when you approach an intersection and see a truck ahead signaling a right turn, you should stay next to the truck, close to the curbside, until the turn is completed.

1. At one time, people thought that heat was a substance called

How are magnet'so magnetic force and magnetic field different

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground? A. A bird sat on a telephone wire. B. A woman moved her child from one place to another in a wagon. C.

What types of mediums are involved in the energy transfer

When two frequencies are added together, the beat frequency and the average frequency are an octave apart?