Answer:
Explanation:
The lowest trophic level in an ecosystem is occupied by producers or autotrophs also known as plants.
Answer:
Option D. is the correct choice.
Explanation:
Resistances connected in series add up to give equivalent resistance.
R_eq = 10+20+30 = 60 ohm
Best Regards!
The electrostatic force between the two ions is
Explanation:
The electrostatic force between two charged particle is given by Coulomb's law:
where
is the Coulomb's constant
are the two charges
r is the separation between the two charges
In this problem, the ion of sodium has a charge of
while the ion of chlorine has a charge of
And the distance between the two ions is
Substituting, we find the electrostatic force between the two ions:
where the negative sign simply means that the force is attractive, since the two ions have opposite charge.
Learn more about electrostatic force:
brainly.com/question/8960054
brainly.com/question/4273177
#LearnwithBrainly
Hello!
1. Answer: D.
2. Answer: A.
3. Answer: C.
4. Answer: I believe the correct answer is A.
5. Answer: D.
6. Answer: B.
7: Answer: C.
I really hope this helped! :)
We use a spectrometer to help us determine what stars and planets are made of by passing a light through various chemical elements, different spectral patterns are created. By matching those patterns up to patterns generated in a laboratory environment we can tell what the composition of a distant star or planet is.