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Mashutka [201]
3 years ago
14

Which of the following correctly shows the four most abundant gases in the Earth's atmosphere in order from most abundant to lea

st abundant?
A.
oxygen, nitrogen, argon, carbon dioxide
B.
nitrogen, oxygen, argon, carbon dioxide
C.
oxygen, nitrogen, carbon dioxide, argon
D.
nitrogen, oxygen, carbon dioxide, argon
Physics
2 answers:
AURORKA [14]3 years ago
5 0

Answer:

B is the answer

Explanation:

ASHA 777 [7]3 years ago
3 0

The correct answer is

B. nitrogen, oxygen, argon, carbon dioxide


In fact, the abundance of the gases in the earth's atmosphere is as follows:

1) Nitrogen: 78.0 %

2) Oxygen: 21.0 %

3) Argon: 0.9 %

4) Carbon dioxide: < 0.1 %

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A neighborhood transformer on the top of a utility pole transforms 12.0 kV 60.0 Hz alternating voltage down to 120.0 V to be use
riadik2000 [5.3K]

Answer:

<em>The primary coil has 13,400 turns</em>

Explanation:

<u>Voltage Transformers</u>

A transformer is an electrical apparatus that converts an alternating electrical voltage to another. Step-down transformers lower the voltage from higher levels (kilovolts) to consumer levels (120/240 Volts).

The ratio between both voltages can be computed as

\displaystyle r=\frac{V_1}{V_2}

Where V1 is the primary voltage and V2 is the secondary voltage. This ratio depends on the turns ratio of the coils wounded in a common magnetic core.

\displaystyle r=\frac{N_1}{N_2}

Being N1 the number of turns of the coils of the primary side and N2 the number of turns in the secondary coil. Both relations give us

\displaystyle \frac{N_1}{N_2}=\frac{V_1}{V_2}

Solving for N1

\displaystyle N_1=\frac{V_1}{V_2}\cdot N_2

We have:

V_1=12,000\ V\\V_2=120\ V\\N_2=134

Calculate N1

\displaystyle N_1=\frac{12,000}{120}\cdot 134=13,400

The primary coil has 13,400 turns

8 0
2 years ago
What is the method of charging called?
lapo4ka [179]
The answer is conduction
3 0
3 years ago
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Calculate the speed of a bus that travels a distance of 55 miles in 0.75 hours.
Sonja [21]
Speed = distance / time = 55 / 0.75 = 73.3 miles per hour.
4 0
3 years ago
The plate area is doubled, and the plate separation is reduced to half its initial separation. What is the new charge on the neg
Norma-Jean [14]

Answer:

 Q = 4 Q₀

Explanation:

This is an exercise on capacitors, where the capacitance is

         C =  \epsilon_{o} \    \frac{A}{d}

if we apply the given conditions

         C = \epsilon_{o} \    \frac{2A}{0.5d}

         C = 4 \epsilon_{o} \    \frac{A}{d}

let's call the capacitance Co with the initial values

         C₀ = \epsilon_{o} \    \frac{A}{d}

         C = 4 C₀

The charge on each plate of a capacitor is

           Q = C ΔV

If the potential difference is maintained, the new charge is

       Q = 4 C₀ ΔV

       

let's call

        Q₀ = C₀ ΔV

we substitute

        Q = 4 Q₀

5 0
2 years ago
What is solar made from
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Hope this helps!

Please give brainliest!

5 0
3 years ago
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