Magnetic field lines, generated by a long straight wire carrying a current, are circles concentric with the wire and lie in plan
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Answer:
Volume of the sample: approximately .
Average density of the sample: approximately .
Assumption:
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- Volume of the cord is negligible.
Explanation:
<h3>Total volume of the sample</h3>The size of the buoyant force is equal to .
That's also equal to the weight (weight, ) of water that the object displaces. To find the mass of water displaced from its weight, divide weight with
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Assume that the density of water is . To the volume of water displaced from its mass, divide mass with density
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Assume that the volume of the cord is negligible. Since the sample is fully-immersed in water, its volume should be the same as the volume of water it displaces.
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Average density is equal to mass over volume.
To find the mass of the sample from its weight, divide with .
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The volume of the sample is found in the previous part.
Divide mass with volume to find the average density.
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We could determine the acceleration using this formula
Given from the question v₀ = 23 m/s, v₁ = 0 (the car stops), t = 5 s
plug in the numbers
a = -4.6
The acceleration is -4.6 m/s²
Given from the question v₀ = 23 m/s, v₁ = 0 (the car stops), t = 5 s
plug in the numbers
a = -4.6
The acceleration is -4.6 m/s²