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Lera25 [3.4K]
3 years ago
7

Please help I’m so confused

Physics
1 answer:
elena55 [62]3 years ago
5 0

Answer:

The velocity of sound is greatest in option a water option be here option c vacancy option d metals.

Explanation:

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Pressure=hrg
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Density of copper is 8.96 g/cm3and density of zinc is 7.14 g/cm3. Brass is an alloy made of copper and zinc. You are given a sam
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Answer:

The material cost for making one ton of the brass sample that I have is $8149.04.

Explanation:

Density of copper = 8.96 g/cm^3 = 8.96×10^-3 kg/cm^3

Price of copper = $6.13/kg

Price of copper per volume = 8.96×10^-3 kg/cm^3 × $6.13/kg = $0.0549/cm^3

Density of zinc = 7.14 g/cm^3 = 7.14×10^-3 kg/cm^3

Price of zinc = $1.8/kg

Price of zinc per volume = 7.14×10^-3 kg/cm^3 × $1.8/kg = $0.0129/cm^3

Price of brass per volume = 0.0549 + 0.0129 = $0.0678/cm^3

Density of brass I have is 8.32 g/cm^3 = 8.32 g/cm^3 × 1 kg/1000 g × 1 ton/1000 kg = 8.32×10^-6 ton/cm^3

Price = $0.0678/cm^3 ÷ 8.32×10^-6 ton/cm^3 = $8149.04/ton

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3 years ago
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A bike rider was moving to the right at a constant speed. Suddenly the wind then starts blowing against her with 3 N of force to
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Answer:

The correct option is D

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Modern atomic theory states that atoms are neutral. how is this neutrality achieved in atoms? having more neutrons than protons
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