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3 years ago

What best describes the angle between a changing electric field and the electromagnetic wave produced by it?

Physics

1 answer:

mel-nik [20]3 years ago

3 0

The correct answer here is Option A, always equal to a right angle.

Keep in mind that the phase difference that exists between the electric field and the magnetic wave is 90 °, this means that the changing electric field and the electromagnetic wave are always perpendicular and will be forming a right angle.

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How does a multicellular organism develop

Klio2033 [76]

Answer:

A multicellular organism develops from a single cell called (the zygote)

Explanation:

This is because many different cell types, organized into tissues and organs. Development involves cell division, body axis formation, tissue and organ development, and cell differentiation

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3 years ago

Brainlist nd 20 points

nadezda [96]

Answer:

I'm not sure but I think it's 35-39

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3 years ago

Read 2 more answers

POSSIBLE POINTS: 60

Dima020 [189]

Answer:

B. 57.4 N horizontal (right)

<u>Explanation</u>:

using cos method:

$cos(35) = \frac{vertical force}{100}$

$vertical force = 57.4 N$

<em>As its vertical, the direction of this force should be up.</em>

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2 years ago

A ball is kicked horizontally with a speed of 5.0 ms-1 from the roof of a house 3 m high. When will the ball hit the ground?

Burka [1]

Answer:

the time taken for the ball to hit the ground is 0.424 s

Explanation:

Given;

velocity of the ball, u = 5 m/s

height of the house which the ball was kicked, h = 3m

Apply kinematic equation;

h = ut + ¹/₂gt²

where;

h is height above ground

u is velocity

g is acceleration due to gravity

t is the time taken for the ball to hit the ground

Substitute the given values and solve for t

3 = 5t + ¹/₂(9.8)t²

3 = 5t + 4.9t²

4.9t² + 5t -3 = 0

a = 4.9, b = 5, c = -3

Solve for t using formula method

$t = \frac{-5 +/-\sqrt{5^2-4(4.9*-3)}}{2(4.9)} = \frac{-5+/-(9.154)}{9.8} \\\\t = \frac{-5+9.154}{9.8} \ or \ \frac{-5-9.154}{9.8} \\\\t = \frac{4.154}{9.8} \ or \ \frac{-14.154}{9.8} \\\\t = 0.424 \ sec \ or -1.444 \ sec\\\\Thus, t = 0.424 \ sec$

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3 years ago

Which of the following is not part of the kinetic molecular theory?

Zarrin [17]

The option which is not part of the kinetic molecular theory is that B. there is very little empty space in a gas.
As a matter of fact, gas particles are very tiny and they exist in mostly empty spaces.

4 0

3 years ago