What is average kinetic energy

Which quantities appear in the equation for the magnetic field component of an electromagnetic wave?

tankabanditka [31]

Answer:

The speed of light (c)

Explanation:

The equation that relates the magnetic field component of an electromagnetic wave the the electric field component of the wave is:

$E=cB$

where

E is the magnitude of the electric field component

B is the magnitude of the magnetic field component

c is the speed of light in a vacuum, whose value is

$c=3.0 \cdot 10^8 m/s$

Re-arranging the equation to solve for B, we find:

$B=\frac{E}{c}$

5 0

3 years ago

Three charges, qA is +6.0 μC, qB is –5.0 μC, and qc is +6.0 μC, are located at the corners of a square with each side length at

lesya [120]

The net electric field at point D is determined as 3.95 x 10⁷ N/C.

<h3>Electric field at D due to charge A</h3>

E = kq/r²

where;

r is the distance between A and D
q is charge A

E(AD) = (9 x 10⁹ x 6 x 10⁻⁶)/(0.05²)

E(AD) = 2.16 x 10⁷ i N/C

<h3>Electric field at D due to charge B</h3>

E = kq/r²

where;

r is the distance between A and B
q is charge B

r² = 5² + 5²

r² = 50

r = √50

r = 7.07 cm

E(BD) = (9 x 10⁹ x 5 x 10⁻⁶)/(0.0707²)

E(BD) = 9 x 10⁶ N/C

in x - direction = 9 x 10⁶ N/C x cos(45) = 6.36 x 10⁶ i N/C

in y - direction = 9 x 10⁶ N/C x sin(45) = 6.36 x 10⁶j N/C

<h3>Electric field at D due to charge C</h3>

E = kq/r²

where;

r is the distance between C and D
q is charge C

E(CD) = (9 x 10⁹ x 6 x 10⁻⁶)/(0.05²)

E(CD) = 2.16 x 10⁷ j N/C

<h3>Net electric field in x direction</h3>

Ei = 2.16 x 10⁷ i N/C + 6.36 x 10⁶ i N/C

Ei = 2.796 x 10⁷ i N/C

<h3>Net electric field in y direction</h3>

Ej = 2.16 x 10⁷ j N/C + 6.36 x 10⁶j N/C

Ej = 2.796 x 10⁷ j N/C

<h3>Resultant electric field at D</h3>

E = √Ei² + Ej²

E = √[(2.796 x 10⁷)² + (2.796 x 10⁷)²]

E = 3.95 x 10⁷ N/C

Thus, the net electric field at point D is determined as 3.95 x 10⁷ N/C.

Learn more about electric field here: brainly.com/question/14372859

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7 0

2 years ago

Biotic parts of an ecosystem interact with

natta225 [31]

Biotic parts of an ecosystem interact with living things like plants, animals, bacteria, and more organisms. Abiotic parts of an ecosystem are non-living things

6 0

3 years ago

Electromagnetic induction occurs when:

Basile [38]

Answer:

It occurs when a magnetic field is induced into a coil of wire by a magnet.

<h3>From~Charminglex~</h3>

8 0

4 years ago

Let E(r) represent the electric field due to the charged ball throughout all of space. Which of the following statements about t

padilas [110]

Answer:

Correct -> E(0) = 0

Correct -> $\lim_{r \to \infty} E(r) = 0$

Correct -> The maximum electric field occurs when r = rb.

Explanation:

The electric field formula due to a particle in space is

$\vec{E} = \frac{1}{4\pi \epsilon_0}\frac{q}{r^2}\^{r}$

However, inside the ball the electric field is different.

Applying Gauss' Law inside the ball gives:

$\int {\vec{E}} \, da = \frac{Q_{\rm enc}}{\epsilon_0}\\ E4\pi r^2 = \frac{qr^3}{(rb)^3\epsilon_0}\\E = \frac{1}{4\pi\epsilon_0}\frac{r}{(rb)^3}$

- At r = 0, the above formula yields 0 as well. Therefore the statement E(0) = 0 is correct.

- Due to the above formula,

$E(rb) = \frac{1}{4\pi \epsilon_0}\frac{q(rb)}{(rb)^3} = \frac{1}{4\pi\epsilon_0}\frac{q}{(rb)^2} \neq 0$

Therefore, the statement "E(rb) = 0" is wrong.

- $\lim_{r \to \infty} E(r) = 0$

This statement is correct. Since r is in the denominator, 1/∞ can be taken zero.

- The maximum electric field does not occur at r = 0.

- If 'rb' is the radius of the ball, then the maximum electric field occurs when r = rb.

- At infinity, the electric field goes to zero, therefore the maximum electric field does not occur as r -> infinity.

5 0

3 years ago