Answer:
Explanation:
Diploid - Having pairs of chromosomes
Chromosome - A strand of DNA wrapped around a protein
Haploid - Having only one set of unique chromosomes
DNA - The molecule that carries genetic information
Sex Chromosome - An X or Y chromosome
Homologous Chromosome - A pair of chromosomes that contain information for the same traits
Answer:
2. The system will be defined by all the parts that act directly on the object, and the object itself.
So the parts are:
The ball.
The air.
The ground. (because this limits the motion of the ball)
The gravitational force (the force that pulls down the ball)
Why is it not the hand or you a part of the system? Because the phenomena is "a ball being dropped" the only action that you do in the ball is release it (you do not impulse it or anything) and we have our time t = 0s, when the ball is dropped, so the hand that was holding the ball is not in the picture for t ≥ 0s, then it is not part of the system.
3. Using what i wrote above, your hand is not in the system.
4. The air is important because it put resistance to the motion of the ball, if there was void, the ball would reach the ground in less time.
5. It is really hard to draw in a computer, so i will give a rough sketch of the system in this case:
Where: g = gravitational force.
H = initial height of the ball, which is really important for this problem.
Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. Hot water is less dense and will float on room-temperature water. Cold water is more dense and will sink in room-temperature water.
Answer: About 97 percent of Earth's water is in the ocean.