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denpristay [2]
3 years ago
13

Two bodies made of the same material have same external dimension and appearance, but one is compact solid and other is hollow.

When they heated for the same temperature range, is the overall volume expansion the same or different? Explain.
Physics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

Different

Explanation:

The hollow one will expand even more making it have a larger volume then the solid one so they are different

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zhuklara [117]

Answer:

Hi there!

The answer is: A. True

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the book has a mass of 2.5 kg. What net force must act on the book to mak it accelerate to the left at a rate of 7.0m/s2?
Reil [10]

Answer:

17.5 N

Explanation:

<h2>Given :</h2>

  • Mass (m) = 2.5 kg
  • Acceleration (a) = 7.0 m/s²

<h2>To calculate :</h2>

  • Force exerted (F)

<h2>Calculation :</h2>

<h3>• F = ma</h3>

→ F = (2.5 × 7.0) N

→ F = 25/10 × 7 N

→ F = 5/2 × 7 N

→ F = (5 × 7)/2 N

→ F = 35/2 N

→ <u>F</u><u> </u><u>=</u><u> </u><u>1</u><u>7</u><u>.</u><u>5</u><u> </u><u>N</u><u> </u><u>towards</u><u> </u><u>left</u>

Hence, 17.5 N of net force must act on the book to make it accelerate to the left.

5 0
2 years ago
Which determines the pitch of a sound? A. At the same wavelength, the sound with the most cycles per second will have the highes
kipiarov [429]
This would be known to be determined by its sound wave which would be the amplitude. The pitch of sound would actually be a little differenr in this matter. But know that we know and understand the sound wave of the pitch of sound, we know that this is done by amplitude.
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4 years ago
A little girl kicks a soccer ball, it goes 10 feet then comes back to her, how is this possible??
kirza4 [7]
Its gravitational force

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if a person with a mass of 70kg is standing on scale in an elevator when the cable snaps, what will the reading on the scale be
dybincka [34]

Answer:

The reading will be the same.

Explanation:

Mass does not depend upon anything and it remains the same anywhere. What changes is the weight of the body because it depends upon gravity and is different at different places.

Giving me the brainest will be helpful.

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3 years ago
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