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ruslelena [56]
2 years ago
13

HELPPP IM DESPERATE

Physics
1 answer:
damaskus [11]2 years ago
5 0

the first one cuz I know

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Phineas and Ferb are riding their bikes on Main Street. They begin at 11 Mile Rd at
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1 hour and 25 minutes

Explanation:

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A spherical drop of water carrying a charge of 42 pC has a potential of 620 V at its surface (with V = 0 at infinity). (a) What
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0.0006091222 m

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Electric potential is given by (at r = R)

V=\dfrac{q}{4\pi\epsilon R}\\\Rightarrow R=\dfrac{q}{4\pi\epsilon V}\\\Rightarrow R=\dfrac{42\times 10^{-12}}{4\pi\times 8.85\times 10^{-12}\times 620}\\\Rightarrow R=0.0006091222\ m

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W = 30 J

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dW = F .dx

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now, calculating Work done by the spring when it stretched to 0.2 m from 0.1 m.

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