The epiglottis covers and stops things from entering the larynx
A soil acidity affects plant growth
Think MPH on a car, The Faster you go the less time it takes to get there. For example, the car again, if a red and blue car are both start in Arizona and want to go to Disney Land they leave the same at the same time but the Blue car goes 50 mph and the Red car 75 mph. The Red car will get there first.
Its actually A. I did the same question and A was the correct answer.
Answer:
Answer in Explanation
Explanation:
Whenever we talk about the gravitational potential energy, it means the energy stored in a body due to its position in the gravitational field. Now, we know that in the gravitational field the work is only done when the body moves vertically. If the body moves horizontally on the same surface in the Earth's Gravitational Field, then the work done on the body is considered to be zero. Hence, the work done or the energy stored in the object while in the gravitational field is only possible if it moves vertically. This vertical distance is referred to as height. <u>This is the main reason why we require height in the P.E formula and calculations.</u>
The derivation of this formula is as follows:
Work = Force * Displacement
For gravitational potential energy:
Work = P.E
Force = Weight = mg
Displacement = Vertical Displacement = Height = h
Therefore,
P.E = mgh