3 years ago

What are voltage and current in electricity?

1 answer:

7 0

Answer:

Voltage, electric potential difference, electric pressure or electric tension is the difference in electric potential between two points, which is defined as the work needed per unit of charge to move a test charge between the two points.

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Define Potential Energy

Mariulka [41]

Answer:

potential energy is a type of energy an object has because of it's position

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3 years ago

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goblinko [34]

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A graph shows how the temperature of a substance changes as energy is added steadily over time.

OlgaM077 [116]

Answer:

A flat, horizontal line

Explanation:

A flat, horizontal line indicates a phase change.

The temperature does not increase because the added heat goes into converting one phase into another.

A is wrong. A downward-sloping line indicates that the temperature is decreasing with time.

C is wrong. An upward-sloping line indicates that the temperature is increasing with time.

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What is a half-life?

Serggg [28]

Answer:

option D is correct

Explanation:

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When the atom's electrons step down to lower energy levels in a thin cloud of hot gas, what is produced?

Reika [66]

Answer: The correct answer is an emission line spectrum.

Explanation:

When the electrons are excited to the higher energy level, the energy is absorbed in this case.

When the electrons in the atom step down to lower energy levels in a thin cloud of hot gas then the radiation will emit.

The electron will lose energy in this case in the form of radiation. There will be an emission line spectrum.

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3 years ago

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