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daser333 [38]
2 years ago
14

What is one advantage of reflecting telescopes? a they have two focal points. b they focus all colors perfectly. c they touch up

images. d they use smaller mirrors?
Physics
1 answer:
artcher [175]2 years ago
5 0
If I'm not mistaken it's b
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During combustion reactions, explain why the energy of the reactants must exceed the total energy of the products​
maxonik [38]

Answer:

In these reactions the products are higher in energy than the reactants. ... This barrier is due to the fact that to make CO2 and H2O we have to break 4 carbon-hydrogen bonds and some ...

Explanation:

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3 years ago
Which equation would you use to solve the following problem? An object is moved 29 m with a force of 289 N. What is the work don
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2 years ago
Two identical resistors are connected first in series and second in parallel. The equivalent resistances of the two types of con
trasher [3.6K]

Answer:

\frac{R_{s} }{R_{p} } =\frac{R_{1} }{R_{2} }+\frac{R_{2} }{R_{1} } +2

Explanation:

We have series and parallel combination of two resisters R_{1} and R_{2}.

Series combination is

R_{s}= R_{1}+R_{2} and Parallel is R_{p} = (\frac{1}{R_{1}}+\frac{1}{R_{2}}  )^-1

Now dividing series equivalent resistance by parallel resistance gives us

\frac{R_{s} }{R_{p} } =\frac{R_{1} }{R_{2} }+\frac{R_{2} }{R_{1} } +2.

Note! series Combination is simply superposition of two elements (resisters in this case ) in a circuit.

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2 years ago
Electric circuits and electric current
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an electric current is a flow of electric charge in electric circuits this is carried by moving electrons in a wire and an electric circuit is an electrical network of electrical components and model of interconnection consisting electrical elements

6 0
3 years ago
A circuit contains two resistors in series. The voltage drop across the first is 10 V. The voltage drop across the second is als
Norma-Jean [14]

Hi there!

Voltage in a series can be expressed by the following:

V_T = V_1 + V_2

In words, the total voltage is equal to the sum of the individual voltage drops in a SERIES circuit.

We can solve for the total voltage:

V_T = 10 + 10 = \boxed{\text{ D. 20 V}}

6 0
2 years ago
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