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boyakko [2]
3 years ago
5

Please help me with question 16 and question 17 . Thank you

Physics
1 answer:
liberstina [14]3 years ago
7 0

Answer:

JADGLHYKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKkkkkkkkkkkkk

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It is claimed that if a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, and all its kinet
TEA [102]

Answer:

v=346.05\ m.s^{-1}

Explanation:

Given:

initial temperature of the lead bullet, T_i=43^{\circ}C

latent heat of fusion of lead, L_f=2.32\times 10^4\ J.kg^{-1}

melting point of lead, T_m=327.3^{\circ}C

We have:

specific heat capacity of lead, c=129\ J.kg^{-1}.K^{-1}

<em>According to question the whole kinetic energy gets converted into heat which establishes the relation:</em>

\rm KE=(heat\ of\ rising\ the\ temperature\ from\ 43\ to\ 327.3\ degree\ C)+(heat\ of\ melting)

\frac{1}{2} m.v^2=m.c.\Delta T+m.L_f

\frac{1}{2} m.v^2=m(c.\Delta T+L_f)

\frac{v^2}{2} =129\times(327.3-43)+23200

v=346.05\ m.s^{-1}

3 0
3 years ago
You are making cookies that call for 3 tablespoons of molasses, but you are having trouble measuring out the thick, syrupy liqui
Andreyy89
You could heat the syrup, grease the spoon with shortening, because if you do, then the molasses won't stick when you pour it out of the spoon into the batter.
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4 years ago
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Which of the following particles is NOT a candidate for dark matter?
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its C) Axion                        

hope it helps

   

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3 years ago
What are the steps of scientific inquiry
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<span>.Ask a Question
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Moving 4.0 coulombs of charge through a circuit
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Substituting in the values gives V=48/4=12

Therefore the PD across the circuit is 12V
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