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motikmotik
3 years ago
11

Jade wants to measure the thickness of a copper wire. She wound the copper wire 30 times around a pencil and used a ruler to mea

sure the length of the wound wire as shown in the figure.
Section of ruler is shown next to a pencil with a wire wound around it. The markings on the ruler are from zero to two centimeters. There are two small markings, one is between zero and one and the other is between one and two. The length of the entire wound wire starts at zero and goes to the small marking which is exactly between one and two.

Which of these is the most accurate thickness of the copper wire? (1 point)

0.001 cm

0.005 cm

0.01 cm

0.05 cm
Chemistry
2 answers:
Gala2k [10]3 years ago
3 0

Answer: 0.05

Explanation:Divide the length (1.5 cm) by the number of turns (30)

Nitella [24]3 years ago
3 0

Answer:

0.05

Explanation:

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Answer:

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Explanation:

We should use the following formula:

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3 years ago
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The molar heat of fusion of gold is 12.550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to release
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The mass of melted gold to release the energy would be  3, 688. 8 Kg

<h3>How to determine the mass</h3>

We have quantity of energy is;

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Let's find number of moles

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Note that molar mass of Gold is 197g/ mol

Number of moles = mass/ molar mass

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Mass = 18. 725 × 197

Mass = 3, 688. 8 Kg

Thus, the mass of melted gold to release the energy would be  3, 688. 8 Kg

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6 0
1 year ago
What type of reaction is KOH + H2SO4
Lady_Fox [76]
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