Since energy is lost in the roller coaster due to friction, the hill should little lower than the starting height since some of the kinetic energy at the bottom of the first hill is lost due to friction so it will not have as much potential energy at the top of the next hill.
A roller coaster is a good way to demonstrate the principle of conservation of energy. Recall that energy is neither created nor destroyed but can be converted from one form to another.
In a roller coaster, all the heights are not the same because energy is lost along the line. Therefore, the students must bear in mind that the hill should be at least a little lower than the starting height because some of the kinetic energy at the bottom of the first hill will be converted to other types of energy due to friction so it will not have as much potential energy at the top of the next hill.
Learn more: brainly.com/question/14281129
Explanation:
Given:
Let 
= mass of the asteroid and 
= orbital radius of the asteroid around the sun. The centripetal force 
is equal to the gravitational force 
or
where
with T = period of orbit. Rearranging the variables, we get
Taking the square root,
The density differences in the ocean water are due to different salt concentration and differences in temperature. B) temperature
If this is one of the following, it's correct
<span>"concentrating denser materials nearer the sun"
I hope this helps!
My source is Quizlet</span>
