Answer:
A. China rose
B. Methyl red
C. Phenolphthalein
Explanation:
An indicator is a substance used to detect the presence of an acid or base as characterized by the indicators color change. An indicator can either be natural or synthetic depending on whether it is obtained from naturally occurring substance (natural) or synthesized in a laboratory (synthetic).
A. China rose is a type of natural indicator that turns deep PINK or MAGENTA in the presence of an acid or GREEN in the presence of a base.
B. Methyl red is a synthetic Indicator that turns RED in the presence of an acid or YELLOW in the presence of a base.
C. Phenolphthalein is an organic dye that is originally colorless but turns PINK in the presence of a base but remains colorless in the presence of an acid or neutral substance.
Answer:
The force of gravity does not affect the horizontal component of motion; a projectile maintains a constant horizontal velocity since there are no horizontal forces acting upon it.
I got A it was the same question to. Guess its a different answer for every one
I am fairly certain it's D. Good luck!
Answer:
Pushing from the same direction: 343 N
Pushing from opposite directions: 171 N
Explanation:
If Dani and Gina are pushing in the same direction then you would add up the forces they are pushing with since the force is applied in the same direction.
257N+86N=343 N
If Dani and Gina are pushing in the opposite direction then you would subtract the forces they are pushing with because they are going against each other.
257N-86N=171 N
Hope this helped! :)
