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3 years ago

I don't get this stuff!!! help me!!!

Physics

1 answer:

Harrizon [31]3 years ago

8 0

The answer is A.) igneous rocks

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Which model could represent a neutral atom of boron?

UNO [17]

Answer:

model 3

Explanation:

Boron with atomic number 5 will have 3 valence electrons

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3 years ago

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A wire of resistance R is cut into ten equal parts which are then connected in parallel. The equivalent resistance of the combin

Greeley [361]

Answer:

<em>The equivalent resistance of the combination is R/100</em>

Explanation:

<u>Electric Resistance</u>

The electric resistance of a wire is directly proportional to its length. If a wire of resistance R is cut into 10 equal parts, then each part has a resistance of R/10.

Parallel connection of resistances: If R1, R2, R3,...., Rn are connected in parallel, the equivalent resistance is calculated as follows:

$\displaystyle \frac{1}{R_e}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_n}$

If we have 10 wires of resistance R/10 each and connect them in parallel, the equivalent resistance is:

$\displaystyle \frac{1}{R_e}=\frac{1}{R/10}+\frac{1}{R/10}+\frac{1}{R/10}...+\frac{1}{R/10}$

This sum is repeated 10 times. Operating each term:

$\displaystyle \frac{1}{R_e}=\frac{10}{R}+\frac{10}{R}+\frac{10}{R}+...+\frac{10}{R}$

All the terms have the same denominator, thus:

$\displaystyle \frac{1}{R_e}=10\frac{10}{R}=\frac{100}{R}$

Taking the reciprocals:

$R_e=R/100$

The equivalent resistance of the combination is R/100

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3 years ago

Which factor is least likely to limit the rate of photosynthesis?

madreJ [45]

Answer:

oxygen concentration

Explanation:

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3 years ago

What substance is used by plants as a source of food

harkovskaia [24]

Answer:

dart

Explanation:

dart and sun and water so that the plant be okay

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2 years ago

Is water wet my friends have been arguing about this for about 3 months now but now it is time to hear other people

nirvana33 [79]

Water is not wet, wet is a state of being. Water, however, can make things wet.

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