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3 years ago

14

A quantity of gasoline injected into car engine has a potential energy of 100J. All of this energy is not converted into useable

work because

1 answer:

neonofarm [45]3 years ago

5 0

Answer:because some energy are lost due to friction

Explanation:some energy are lost due to friction

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3 years ago

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3 years ago

A small metal bead, labeled A, has a charge of 26 nC . It is touched to metal bead B, initially neutral, so that the two beads s

adell [148]

Answer:

$q_A=25.953\ \rm nC$

$q_B=0.047\ \rm nC$

Explanation:

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Total initial charge on bead A=26 nC
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Using coulombs law the force between two charged particle is $\dfrac{q_Aq_B}{4\pi \epsilon_0 r^2}$

where r is the radial distance between them

According to question we have

$4.4\times10^{-4}=\dfrac{q_Aq_B\times9\times10^9}{0.05^2}\\\\4.4\times10^{-4}=\dfrac{q_A(q_A-26\times10^{-9})\times9\times10^9}{0.05^2}\\q_A=25.953\ \rm nC\\q_B=0.047\ \rm nC$

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3 years ago

A model train moves 18.3m in 122s. What is the train's average speed?

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3 years ago