Answer:
B
Explanation:
Laboratories are usually controlled: however, in public places, there are way too many factors that could change an experiment
Answer:
Explanation:
I believe what you're looking for is :
Opposites
Density
Could be wrong but I think so.
Answer:
<em>Answer: D. Only R</em>
Explanation:
<u>The Principle Of Conservation Of Mechanical Energy</u>
In the absence of friction, the total mechanical energy is conserved. That means that
Em=U+K is constant, being U the potential energy and K the kinetic energy.
At the top of the path (point Q), Joshua is at rest but his height is at a maximum. Thus his kinetic energy is zero.
At point P, Joshua is at the minimum level (potential energy zero) and his speed is at a maximum.
At point R, Joshua has some height and some speed which means he has both types of energy.
Answer: D. Only R
Are there any answer choices?
Submarines use <span>buoyancy by filling ballast tanks up with water. When they are filled with water, they are more dense than the surrounding water, so they are able to sink. If they want to rise, they fill these tanks up with air so that the density is less than the water it surrounds.
Hope this helps! :)</span>
The answer is c.
Hope this helps!!!!!!!!!!
