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3 years ago

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A scale reads 184 N when a piece of copper is hanging from it. What does it read (in N) when it is lowered so that the copper is

submerged in water?

1 answer:

3241004551 [841]3 years ago

4 0

Answer:

163 N

Explanation:

The density of copper is about 8.96. The ratio of the weight in water to the weight in air is about 1-1/ρ, so is about 0.8884.

0.8884 × 184 N ≈ 163 N

The submerged weight is about 163 N.

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Which has the greater acceleration, a person going from 0 m/s to 10 m/s in 10 seconds or an ant going from 0 m/s to 0.25 m/s in

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<u>P</u><u>e</u><u>r</u><u>s</u><u>o</u><u>n</u><u>-</u><u>1</u>

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<u>P</u><u>e</u><u>r</u><u>s</u><u>o</u><u>n</u><u>-</u><u>2</u>

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Time=t=2s

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3 years ago

A lens of focal length 10.0 cm

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Answer:

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Explanation:

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3 years ago

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Answer:

23 m/s downward

__________________________________________________________

<em>Taking the downward direction as positive</em>

<u>We are given:</u>

Initial velocity of the marble (u) = 0 m/s

Time interval (t) = 2.3 seconds

Final velocity (v) = x m/s

<u>Solving for the Final velocity:</u>

<u>Acceleration of the Marble:</u>

We know that gravity will make the marble accelerate at a constant acceleration of 10 m/s

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Object height 10cm is placed in front of plane mirror. The height of the image will also be 10cm as the height of image is same as height of object in the case of plane mirror

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3 years ago

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The average velocity of the car for the whole journey is 69.57 km/h.

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Learn more about average velocity here: brainly.com/question/6504879

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