Answer with Explanation:
<em>I can see that you haven't attached the results.</em>
Under Ideal Gas Law, "pressure" is<u> directly proportional to the number of molecules</u> (provided that the volume and temperature remains constant).
Most of the atmosphere's molecules are drawn towards the surface of the Earth because of "gravity." This means that there are <u>more atmospheric molecules closer to the Earth's surface,</u> which also means the air pressure in lower altitude is higher due to a denser air space.
This, in turn, leaves a <u>lesser number of atmospheric molecules as the height increases</u> which means there is lesser atmospheric pressure in areas of higher altitudes due to a less denser air space.
So, this explains the answer.
The Answer Would You Are Looking For Would Be:
~Expand.
Hope this helps.
Answer:
A) The sum of the kinetic energy and the gravitational potential energy changes by an amount equal to the energy dissipated by friction,
Explanation:
- The kinetic energy is the energy that the object has and is defied by the work that is needed to accelerate the body.
- The gravitational potential is a mechanism by which an equal amount of energy is being transferred per unit mass that is needed for the object to move from the specific location.
- Hence when the sled moves down the hill with the force of gravity it has negligible resistance as an equal amount of energy is dissipated.
While skydiving, its not just freely falling under Earth's gravity. Additional force called drag acts against the gravity which slows down the rate of fall. Drag is caused by the air molecules which pushes against the body as it falls through them. This is actually a significant amount of force which slows down the rate of fall of the body. Drag depends on the contact surface area and weight. More the surface area in contact, more would be the drag. The sitting position of the skydiver would experience less drag than the chest down position because of the less contact surface area of the body with the air molecules while in the former case. No two persons have identical body shape and weight. Hence, the rate of fall can be made nearly equal but not exactly equal. This is would be possible when they are having same body position.
Early hypotheses were not based on observations.
Early hypotheses were not tested by experimentation.
Early hypotheses were formed from scientific questions.
Early hypotheses were influenced by creative thinking
