# At a particular moment in time and space, we measure an electromagnetic wave's electric and magnetic fields. we find the electric field âe pointing north and the magnetic field âb pointing down. what is the direction of wave propagation?

Electromagnetic waves are a combination of oscillating electric and magnetic fields. The direction of electromegnetic wave propagation is perpendicular to the electric and magnetic fields.

What is an electromagnetic wave?

EM waves are another name for electromagnetic waves. Electromagnetic radiations are made up of electromagnetic waves created when an electric field collides with a magnetic field.

Electromagnetic waves may alternatively be defined as the combination of oscillating electric and magnetic fields. The right-hand thumb rule is used to define the direction of the wave.

According to the right-hand thumb rule,

Hold a current-carrying conductor in your right hand with your thumb pointing in the direction of the current.

Then wrap your fingers around the conductor and orient them in the direction of the magnetic field lines.

Hence the direction of electromegnetic wave propagation is perpendicular to the electric and magnetic fields.

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perpendicular to magnetic field and electric field.

the magnetic field is always perpendicular to the magnetic field and direction of wave propagation is perpendicular to the both field.

these give us a right hand rule relating the direction .
1) keep your fingers in the direction of electric field.
2) curl your fingers toward magnetic field
3)the thumb of your hand show the direction of propagation .

hence

so direction of the wave propagation in 'west' direction .

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Which of these materials is the most malleable? Select one:

A. notebook paper

B. copper

C. window glass

D. granite

Explanation:

A malleable is the property of metals which can be capable of being shaped and extended by the process of beating using a hammer or by using the rollers pressure. The malleable material is capable of being altered or controlled by the external forces and influences. The malleable metal does not breaks and it is not brittle.

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A 320 kg rocket sled can be accelerated at a constant rate from rest to 1900 km/h in 2.1 s. What is the magnitude of the required net force?

Force = 80422.4 N

Explanation:

Given that,

Initial speed, u = 0 m/s

Final speed, v = 1900 km/h = 527.78 m/s ( 1 km/h = m/s)

Time taken, t = 2.1 s

So, Applying equation of motion as:

According to the Newton's second law of motion:-

Mass = 320 kg

So,

Force = 80422.4 N