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3 years ago

Evan drew a diagram to illustrate radiation

Physics

2 answers:

labwork [276]3 years ago

8 0

The answer would be D, electromagnetic waves

Novay_Z [31]3 years ago

7 0

The correct answer to the question is D. Electromagnetic waves.

EXPLANATION:

As per the diagram, the radiations are emitted by sun is coming to earth.

The radiations coming from sun is electromagnetic in nature. It does not require any medium for its propagation. It travels a long distance in vacuum or space to reach earth.

It contains both electric field and magnetic field which are perpendicular to each other and also normal to the direction of propagation. The diagram shows that the wave is moving in the form of crests and troughs.

If we consider the wave nature of radiation, then it is one way of transportation of thermal energy from sun to earth which is known as radiation.

Hence, the arrows drawn in the figure is electromagnetic waves.

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Two very long uniform lines of charge are parallel and are separated by 0.300 m. each line of charge has charge per unit length

Alenkasestr [34]

linear charge density of system of two line charges is given as

$\lambda = 5.20 \muC/m$

now as we know that electric field due to a line charge at some distance from it is given by

$E = \frac{\lambda}{2\pi \epsilon_0 r}$

so here we will first find the electric field of first line charge at the position of other line charge

$E = \frac{5.20 * 10^{-6}}{2 \pi * 8.85 * 10^{-12}* 0.300}$

$E = 312000 N/C$

now as we know that

$F = qE$

here q = charge on the line charge system at which force is required

E = electric field on that system of charge where force is required

now we can find the charge by

$q = \lambda * L$

$q = 5.20 * 10^{-6}* 0.05 = 0.26 * 10^{-6} C$

Now using the above formula

$F = qE$

$F = 0.26 * 10^{-6} * 312000$

$F = 0.0811 N$

so force on the part of wire is F = 0.0811 N

8 0

4 years ago

Newton’s laws of motion are an inherent part of our everyday life. Starting from the beginning of the day till the end, Newton’s

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1st

Newton's laws of motion are three basic laws of classical mechanics that describe the relationship between the motion of an object and the forces acting on it. These laws can be paraphrased as follows: Law 1. A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force.

2nd

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

3rd

His third law states that for every action (force) in nature there is an equal and opposite reaction. If object A exerts a force on object B, object B also exerts an equal and opposite force on object A. In other words, forces result from interactions.

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2 years ago

A woman standing on the ground sees a rocket ship move past her at 95% the speed of light. Compared to the rocket at rest, the w

Rufina [12.5K]

As per Einstein's theory of relativity we know that when an object will move with the speed comparable to the speed of light then the length of the object will be different from its length at rest position

This is also known as length contraction theory

As we know here that

$L = L_0\sqrt{1 - \frac{v^2}{c^2}}$

so here we know that

v = 0.95 c

so from above equation we will have

$L = L_0\sqrt{1 - 0.95^2}$

$L = 0.31 L_0$

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3 years ago

An air-conditioner with refrigerant-134a as the working fluid is used to keep a room at 238C by rejecting the waste heat to the

tatiyna

Answer:

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7 0

3 years ago

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Dima020 [189]

Answer:

1.8L

Explanation:

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3 years ago