3 years ago

Which of these examples has the most kinetic energy?

Physics

2 answers:

ch4aika [34]3 years ago

8 0

The answer would be A.a fully charged car battery

gavmur [86]3 years ago

3 0

The answer is C. A skydiver floating down on a parachute.

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Answer:

The force exerted on an electron is $7.2\times10^{-18}\ N$

Explanation:

Given that,

Charge = 3 μC

Radius a=1 m

Distance = 5 m

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$E=\dfrac{kqx}{(a^2+x^2)^{\frac{3}{2}}}\hat{x}$

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$E_{1}=\dfrac{9\times10^{9}\times3\times10^{-6}\times5}{(1^2+5^2)^{\frac{3}{2}}}$

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Using formula of electric field again

$E_{2}=\dfrac{kqx}{(a^2+x^2)^{\frac{3}{2}}}\hat{x}$

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We need to calculate the resultant electric field

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$E = \dfrac{F}{q}$

$F=E\times q$

Put the value into the formula

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$F=7.2\times10^{-18}\ N$

Hence, The force exerted on an electron is $7.2\times10^{-18}\ N$

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