3 years ago

What would happen if both dogs pulled the rope with a force of 85 n?

Physics

1 answer:

m_a_m_a [10]3 years ago

5 0

Answer:

The net force will be 0

Explanation:

Since both dogs are pulling with the same amount of force, there will be no movement in any direction because the applied force is balanced. Subtract 85 from 85 and the net force is 0. There will be no movement in any direction.

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Explanation:

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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:

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

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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>

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

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

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

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

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

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3 years ago

A rock at the top of a 20 meter tall hill.The rock has a mass of 10 kg. How much potentail energy does it have?

ch4aika [34]

P.E.=mgh
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