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TiliK225 [7]
3 years ago
13

The density of gold is 19 300kg/m cube. what is the mass of gold cube with the length 0.2015m?

Physics
1 answer:
Sergeeva-Olga [200]3 years ago
4 0

Answer:

157.9 kg

Explanation:

Density: This can be defined as the ratio of the mass of a body and it's volume.

The S.I unit of density is kg/m³.

From the question,

Density = Mass/volume

D = m/v............................ Equation 1

Where D = Density of gold, m = mass of gold, v = volume of gold.

make m the subject of the equation

m = Dv.................... Equation 2

Since the gold is a cube,

v = l³................... Equation 3

Where l = length of the gold cube.

Substitute equation 3 into equation 2

m = Dl³............... Equation 4

Given: D = 19300 kg/m³, l = 0.2015 m

Substitute into equation 4

m = 19300(0.2015)³

m = 157.9 kg.

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yaroslaw [1]

<em><u>One</u></em>

Givens

  • delta B = 0.20 T/s
  • A = 0.07 m^2
  • R = 3.5 ohms

Formula

Φ = ΔB*A

e = Φ

Solution (first part)

e = 0.2 * 0.07

e = 0.014 emf

Solution (second part)

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Answer

A

<em><u>Two</u></em>

Givens

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Formula

e = -N * delta B * A * Cos(phi)

Solution

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Answer

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4 0
3 years ago
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