3 years ago

Which diagram or diagrams represent a single element?

Physics

1 answer:

expeople1 [14]3 years ago

7 0

A diagram with atoms of the same color and size.

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What percentage more of water is used to provide us with electricity verses for irrigation

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4.5% more water is used.
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4 years ago

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the moon revolves around the earth in a nearly circular orbit kept by gravitational force exerted by the earth work done will be

rodikova [14]

Answer:

Zero because the applied force is perpendicular to the motion of the object.

No work is done on an object moving is a circular path about a central attractive force.

Any work done in such a case would result in a change in the orbit.

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3 years ago

Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an al

olga nikolaevna [1]

Answer:

$6.67154\times 10^{-9}\ F$

13.009503 C

Explanation:

$\epsilon_0$ = Permittivity of free space = $8.85\times 10^{-12}\ F/m$

k = Dielectric constant of air $3\times 10^6\ V/m$

Side of plate = 0.7 km

A = Area

d = Distance = 650 m

Capacitance is given by

$C=\dfrac{\epsilon_0A}{d}\\\Rightarrow C=\dfrac{8.85\times 10^{-12}\times 700^2}{650}\\\Rightarrow C=6.67154\times 10^{-9}\ F$

The capacitance is $6.67154\times 10^{-9}\ F$

Electric field is given by

$Q=CV\\\Rightarrow Q=Ckd\\\Rightarrow Q=6.67154\times 10^{-9}\times 3\times 10^6\times 650\\\Rightarrow Q=13.009503\ C$

The charge on the cloud is 13.009503 C

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3 years ago

In can expermient why the can is chrushed

schepotkina [342]

Answer:

Force is applied to the point where the can can't handle it and starts to get crushed

Explanation:

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3 years ago

How much force is needed to accelerate a 1,500 kg car at a rate of 7 m/s2?

Sidana [21]

Newton's 2nd law of motion:

   Force = (mass) x (acceleration)
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   (1,500 kg) x (7 m/s²) = 10,500 newtons .

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4 years ago