Answer:
Explanation:
2) From F=ma
Force =15×40=600N or kgm/s2
3)From the same equation making acceleration the subject of the formula will give
a=f÷m
=24÷4=6m/s2
4)m=f÷a
=45÷15=3kg
Answer:
<em>The wave will be travelling in the y-axis</em>
Explanation:
An e-m wave has a spatially varying electric field that is always associated with a magnetic field that changes over time and vice versa. The electric field and the magnetic field oscillates perpendicularly to each other, and together form a wave that travels in a perpendicular direction to the magnetic and the electric field in space. The movement of the e-m wave through space is usually away from the source where it is generated. So, if the electric field travels in the z-axis, and the magnetic field travels through along the x-axis, then the e-m wave generated will travel in the y-axis direction.
The y -component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum
- Ey = 375•Cos[kx - (2.20 × 10¹⁴t)]
- Speed of light
- c = 3×10^8m/s
- hat is the wavelength?
- Generally,
- The wavelength of electromagnetic wave is give as
- Ey = Emax•Cos(kx—wt)
- k = 2π/λ
- w = 2πf
- Ey = Emax•Cos(2πx/λ—2πft)
- Comparing this to the wave equation given,
- We notice that,
- 2πx/λ = kx
- Also,
- 2.20 × 10¹⁴t = 2πft
- t cancels out
- 2.20 × 10¹⁴ = 2πf
- f = 2.20 × 10¹⁴ / 2π
- f = 3.5 × 10¹³ Hz
- Since we are given that
- c = 3×10^8m/s
- Then, using relationship between c, v and λ.
- c = fλ.
- λ. = c/f
- λ. = 3×10^8 / 3.5 ×10¹³
- λ. = 8.57 × 10^-6m
- λ. = 8.57 μm
- The wavelength of the electromagnetic wave is 8.57 micro meter (8.57 μm)
<h3>What is
electromagnetic wave?</h3>
In terms of science, electromagnetic radiation (EMR) is made up of electromagnetic (EM) field waves that travel over space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, visible light, ultraviolet, and radio waves. These waves are all a component of the electromagnetic spectrum.
Electromagnetic waves, which are synchronized oscillations of the electric and magnetic fields, are the traditional form of electromagnetic radiation. Due to the periodic alteration of the electric or magnetic field, electromagnetic radiation or waves are produced. Different wavelengths of the electromagnetic spectrum are created depending on the manner in which this periodic change takes place and the power generated. Electromagnetic waves move at the speed of light, typically abbreviated as c, in a vacuum. The oscillations of the two fields are perpendicular to one another and perpendicular in homogeneous, isotropic media.
To learn more about electromagnetic wave from the given link:
brainly.com/question/8773290
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