Potential energy<span> is </span>energy<span> that is stored in an object. As the rubber band is released, </span>potential energy<span> is changed to motion. </span>Kinetic energy<span> is </span>energy<span> of motion. A rubber band flying through the air has </span>kinetic energy<span>.</span>
After stating the problem, we form a hypothesis, or an explanation that can be tested.
Explanation:
Lodestone am iron were the only known magnetic materials in Gilbert's day, and his task was to investigate magnetism. Gilbert was so sure that the earth was a giant lodestone and used the earth as a primary reference, defining the north(magnetic) pole of a needle, or a a nail floating on a piece of cork, to be that which turns towards the Earth's north geographic pole. he wanted to prove this with a model Terella, using short pieces of iron.
Answer:
Explanation:
Let's start finding the frequency heard by the bystander due to the moving car. We need to use Doppler effect here:
v is the speed of sound (v = 343 m/s)
So, we have:
Now, the beat frequency heard by the bystander is the combine of the frequencies, it means the difference between them. Therefore the equation is given by:
I hope it helps you!
