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2 years ago

In terms of matter and resources, Earth is essentially a(n) system ; in terms of energy, Earth is a(n) system.

Physics

1 answer:

Savatey [412]2 years ago

6 0

Answer:

Explanation:

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Two small conducting point charges, separated by 0.4 m, carry a total charge of 200 C. They repel one another with a force of 12

Lunna [17]

Answer:

200 C

Explanation:

Let C1 and C2 be their charges. According to Coulomb's law

$F_C = k\frac{C_1C_2}{R^2}$

where k = $8.99\times10^9 nm^2/C^2$ is the constant, R = 0.4m is the distance between them, F = 120 N is their resulting charge force

$120 = 8.99\times10^9\frac{C_1C_2}{0.4^2}$

$C_1C_2 = \frac{120*0.4^2}{8.99\times10^9} = 2.13\times10^{-9}$

Since their total charge is 200C:

$C_1 + C_2 = 200$ or $C_1 = 200 - C_2$

We can substitute the above equation

$C_1C_2 = (200 - C_2)C_2 = 2.13\times10^{-9}$

$-C_2^2 +200C_2 - 2.13\times10^{-9} = 0$

$C= \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

$C= \frac{-200\pm \sqrt{(200)^2 - 4*(-1)*(-0.00000000213)}}{2*(-1)}$

$C= \frac{-200\pm200}{-2}$

$C = 1.06 \times 10^{-11}$ or $C \approx 200$

So the larger charge is C = 200 C

8 0

3 years ago

When learning a new exercise what is the first thing you should focus on?

Brums [2.3K]

Answer:

If your form is correct (b)

3 0

2 years ago

Read 2 more answers

Help with this. ....

Dovator [93]

Answer:

Explanation:

The x component is the adjacent side making up the given angle (39.4)

The vector is the hypotenuse.

The definition of the cos (x) is adjacent / hypotenuse.

cos(39.4) = adjacent / 47.3 Multiply both sides by 47.3

47.3 * cos(39.4) = adjacent Cos(39.4) = 0.7727

adjacent = 36.55

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3 years ago

If a battery is running down, a light bulb in the circuit will become dimmer because when voltage drops

lana [24]

A. There is less current flowing through the bulb.

Ohms law dictates that Electrical voltage = current x resistance. To understand current you would divide voltage by resistance. The less voltage the less current will run through the circuit.

Mark as brainliest if satisfied.

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2 years ago

Satellites can focus on specific latitudes using:

Fittoniya [83]

B- east west orbits

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2 years ago

In terms of matter and resources, Earth is essentially a(n) ________ system ; in terms of energy, Earth is a(n) ________ system.

In terms of matter and resources, Earth is essentially a(n) system ; in terms of energy, Earth is a(n) system.