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3 years ago

14

A car is travelling with a velocity of 10 m/s and has a mass of 550 kg. The car has energy.

1 answer:

Elenna [48]3 years ago

3 0

Answer: The car has a kinetic energy (because it's in motion) of: $27500J$

Explanation:

$Formula: E=\frac{1}{2}mv^2$

$E=\frac{1}{2}mv^2$

$E=\frac{1}{2}(550kg)(10m/s)^2$

$E=\frac{1}{2}(550kg)(100m^2/s^2)$

$E=\frac{1}{2}(55000J)\\E=27500J$

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wlad13 [49]

Explanation:

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Solving for $\ddot{x}$ :

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where:

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Integrating to get x with initial conditions x(0) = 0:

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When t=T:

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The total electric flux from a cubical box 26.0 cm on a side is 1840 N m2/C. What charge is enclosed by the box?

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The expression of the electric flux is

$\Phi = \frac{Q}{\epsilon_0}$

Here,

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$\epsilon_0$ = Permittivity due to free space

Rearranging to find the charge,

$Q = \epsilon_0 \Phi$

Replacing with our values we have finally

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