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3 years ago

Please someone help me plz I don’t understand 1 or 2 plz help me plz plz plz

Physics

1 answer:

Sati [7]3 years ago

7 0

Answer: 1.Magnification and resolution are important because the magnification in larges the image and the resolution makes it move shape and detailed creating the perfect image. 2. i dont know the second one, sorry

Explanation:

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What do you know about nuclear energy?

aev [14]

Answer:

Nuclear energy comes from splitting atoms in a reactor to heat water into steam, turn a turbine and generate electricity. Ninety-three nuclear reactors in 28 states generate nearly 20 percent of the nation's electricity, all without carbon emissions because reactors use uranium, not fossil fuels.

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6 0

3 years ago

if Xc = 7,500 and the resistance is 10,000 in a series RC circuit , what is the impedance of the circuit?

mr_godi [17]

Answer:

The impedance of the circuit = 12500 Ω

Explanation:

Impedance: This is the overall opposition to the flow of current in an a.c circuit by any two or all of the three circuit elements.(R, L, C) is called impedance.

The S.I unit of Impedance is Ohms. (Ω), It can be represented mathematically as

Z = √(Xc² + R²).................... Equation 1

Where Z = impedance, Xc = reactance of the capacitor, R = resistance of the resistor.

Given: Xc = 7500 Ω, R = 10000 Ω

Substituting these values into equation 1,

Z = √(7500² + 10000²)

Z = √(56250000 + 100000000)

Z = √(156250000)

Z =12500 Ω

Therefore, The impedance of the circuit = 12500 Ω

3 0

3 years ago

Read 2 more answers

Which statements accurately describe matter? Check all that apply.

sasho [114]

Here are some examples of statements that accurately describe matter:
Matter makes up everything in and on the earth
Nothing can create or destroy matter
The matter is made up of atoms, atoms cannot be divided
Hope this helped!

7 0

4 years ago

Read 2 more answers

The temperature scale used in science is the _______ scale.

vivado [14]

The temperature scale used in science is the Kelvin scale. The correct option among all the options given in the question is option "a". This is the standard scale used for measuring in astronomical and thermodynamics fields. The other scales can create complications as different countries use different type of scales.

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4 years ago

Which of the following statements are true? Check all that apply.

stiks02 [169]

Answer:

B,C

Explanation:

In the law of magnetism, like poles repel and unlike poles attract. The north and South Pole attracts which makes B correct. The north and north or south and south poles repel.

In a compass ,the north end of a magnet is attracted to the south magnetic pole which is in close proximity to the geographic South Pole. This makes

Option c correct.

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3 years ago