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noname [10]
2 years ago
11

Velocity is defined as:

Physics
1 answer:
gogolik [260]2 years ago
6 0

Velocity is defined as a change in position.

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As fuel is burned in an electrical generator, the chemical energy of the fuel is converted into thermal energy that is used to b
amid [387]

Answer: A

Explanation:

3 0
2 years ago
What is a direct result of having greenhouse gases in the atmosphere?
andrew-mc [135]
A direct result of having greenhouse gases in the atmosphere would be energy from the sun trapping its self within the earth's atmosphere and ground, producing a lot of heat in the process since it cannot escape, making some temperatures rise substantially in some regions. However, another direct result would be plant growth. Greenhouse gasses are made of carbon dioxide, or CO2, and plants cannot live without carbon dioxide. It also causes a significant amount of water vapor which provides more rain as a direct result like it does carbon dioxide, which makes our planet healthier and able to survive easier.

I hope this helped in some way! Have a pleasant morning/day/night!
6 0
3 years ago
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

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2 years ago
Why do we eat today
earnstyle [38]
Because if we don't you'll be hungry, if you don't eat for about a month you'll die
3 0
3 years ago
Read 2 more answers
The angle of reflection is the angle between the normal line and the___?
Aleks [24]

Answer:

Reflected line

Explanation:

The angle between the reflected ray and the normal ray is called angle of reflection.

4 0
3 years ago
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