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Tcecarenko [31]
3 years ago
7

How is it possible that charcoal, graphite, and diamonds are largely composed of the same element?

Physics
1 answer:
brilliants [131]3 years ago
3 0
<h3>Both <em>graphite </em>and <em>diamonds </em>are made out of pure carbon. The chemical composition of the two is <em>exactly the same</em>. This makes graphite and diamonds allotropes of carbon along with amorphous, which is commonly called soot or carbon black. </h3>

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Explanation:

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What is the resistance of the coil A at 600 kelvin if its resistance at 300 kelvin is 50 ohms? (Assume the temperature coefficie
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155Ω

Explanation:

R = R ref ( 1 + ∝ ( T - Tref)  

where R = conduction resistance at temperature T

R ref = conductor resistance at reference temperature

∝ = temperature coefficient of resistance for conductor

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T ref = reference temperature that ∝ is specified at for the conductor material

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8 0
3 years ago
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An Olympic discus thrower (~100 kg) launches the 2.0 kg discus by spinning rapidly (~4 times per second) with arm outstretched (
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Answer:

F = 1263.03 N

Explanation:s

given,                      

mass of the disk thrower = 100 Kg

mass of the disk = 2 Kg                

angular speed of the disk  = 4 rev/s

arm outstretched = 1 m                  

centripetal force of the disk in the circular path

F = m ω² r                        

ω = 4 x 2 x π        

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F = m ω² r                      

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hence, centripetal force equal to the F = 1263.03 N

6 0
3 years ago
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