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Bogdan [553]
4 years ago
14

Which best explains why a wood- burning fireplace represents an open system?

Physics
2 answers:
Anna11 [10]4 years ago
6 0

D. Fire requires oxygen

11111nata11111 [884]4 years ago
4 0
D-Because a fire requires oxygen from the atmosphere to burn
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How do I determine which object has the greatest acceleration?
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acceleration = (Final Velocity - Initial Velocity) / Time

Just plug-in values for what you have and see which one has the greatest acceleration. If you're given velocity-time graphs, then the one with the steepest slope would have the greatest acceleration.

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Why is it important to have a balanced centrifuge?
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4 years ago
Consider two transformers. Transformer A has 300 turns on its primary and 500 turns on its secondary. Transformer B has 250 turn
rusak2 [61]

Answer:

Secondary voltage on second transformer is 200 volt.

Explanation:

It is given two transformer

Let us consider first transformer.

Number of turns in primary N_p=300

Numb er of turns in secondary N_s=500

Now consider second transformer

Number of turns in primary N_p=250

Number of turns in secondary N_s=1000

Now it is given that same voltage of 50 volt is applied to primary of both the transformer.

For second transformer

\frac{N_p}{N_s}=\frac{V_p}{V_s}

\frac{250}{1000}=\frac{50}{V_s}

V_s=200volt

So secondary voltage on second transformer is 200 volt

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4 years ago
What is the relationship between thermal energy and temperature?
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What two factors determine gravitational potential energy?
Mashcka [7]
Mass & Height above the ground
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