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lesantik [10]
3 years ago
14

You have created a circuit in science class. You are using a 9 volt battery. You have generated what type of current?

Physics
2 answers:
gavmur [86]3 years ago
7 0

Batteries always provide Direct Current (DC).

If you're powering your project with batteries and you need some Alternating Current (AC) in parts of the circuit, then you have to provide an extra section of the circuit to take the DC from the battery and make AC with it.

marishachu [46]3 years ago
5 0

Batteries produce direct current.

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Please help <br>Newton second law of motion is F =ma <br>​
mamaluj [8]

Answer: ma is the formula of Newton's Second Law of Motion. Newton's Second Law of Motion is defined as Force is equal to the rate of change of momentum. For a constant mass, force equals mass times acceleration.

Explanation: Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

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2 years ago
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If two temperatures differ by 25 degrees on Celsius scale, the difference of temperature on Fahrenheit scale is?
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Answer:

25 x 9/5 = 45 degrees Fahrenheit

Explanation:

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What is the function (job) of the genes in protein synthesis (how proteins are made in the cell)?
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3 years ago
A bridge to be fabricated of steel girders is designed to be 500 m long and 12 m wide at ambient temperature (assumed 20°C). Exp
andrew-mc [135]

Answer:

23

21.7391304348 m

Explanation:

L = Initial length = 500 m

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Change in length is given by

\Delta L=L\alpha \Delta T\\\Rightarrow \Delta L=500\times 12\times 10^{-6}\times (40-(-35))\\\Rightarrow \Delta L=0.45\ m

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The number of joints would be

n=\dfrac{0.45}{0.02}\\\Rightarrow n=22.5\\\Rightarrow n\approx 23

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The length of each bridge section would be 21.7391304348 m

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3 years ago
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