Chemical changes are not usually physical so you can’t see them I guess so I would put D
Answer:
B) plants absorb energy from sunlight
Explanation:
Plants use energy from the sunlight to synthesize foods from carbon dioxide and water
Answer;
A person who sprints for 45 seconds obtains most of his or her energy from muscle glycogen.
Explanation;
Muscle glycogen is the glycogen that is stored in the muscles and liver.
Glycogen is the primary source of energy during exercise, and low glycogen levels decreases the ability to gain strength and muscle. An athlete who sprints for 45 seconds obtains most of his or her energy from the muscle glycogen.
An example of a situation in equilibrium is the amount of money in a bank account never changes.
What is Equilibrium?
Equilibrium is a point where the supply and demand are perfectly equal.
Equilibrium can be of two types:
- dynamic equilibrium
- static equilibrium
Example of equilibrium conditions include:
Chemical equilibrium - this refers to the equilibrium that exists in chemical systems. This form of equilibrium is a dynamic equilibrium where even though conditions in the system remain constant, the molecules in the system are constantly changing.
See-saw equilibrium - this is a static equilibrium where there os no change occurring in the sytem.
An equilibrium state is reached when when the supply and demand is equal such as the case when the amount of money in a bank account never changes.
In conclusion, equilibrium state is constant and never changes.
Learn more about equilibrium at: brainly.com/question/517289
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Answer:
Spinning a ball on a string or twirling a lasso: Here the centripetal force is provided by the force of tension on the rope pulls the object in toward the centre. Turning a car: Here the centripetal force is provided by the frictional force between the ground and the wheels.
Explanation:
