Answer:
The statement which best explains the difference between the light waves travelling through a vaccuum and light waves travelling through a medium is -"<u>When light waves travel through a vacuum, they travel faster than when they travel through a medium."</u>
Explanation:
Light waves are faster in vacuum because The refractive index of vacuum is the lowest since there is no barrier in the way of light propagation in vacuum. Demonstrate that the maximum speed of light in vacuum.
In a vacuum, light flies at 186,283 mph. Light flies at 186,200 mph in the air, or 56 mph slower. In another medium, such as water, light travels at 139,712 mph, or around 3/4 of the speed of light in a vacuum.
<u>LIGHT WAVES -: </u> Light waves are a form of electromagnetic wave that includes both visible and invisible to the naked eye wavelengths on the electromagnetic spectrum. The average human eye can see light with wavelengths ranging from 390 to 700 nanometers, or nm.
Forms of light waves comprises of Radio waves , microwaves , infrared waves , visible light etc.
Answer:
The wave is said to have undergone reflection.
Explanation:
When a wave traveling through a medium meets the boundary of that medium, it gets bounced back and returns into the medium in which it is traveling. This behavior of the wave that causes a change in the direction of the wave is known as reflection. Examples of reflection include the reflection of sound waves, light waves, water waves, etc.
According to the law of reflection, the angle at which the waves approach the barrier (or an interface between two mediums) equals the angle at which they reflect off the barrier (or an interface between two mediums).
Refraction of waves is referred to the change in the direction of waves or bending of the path of the waves when they pass from one medium to another which is accompanied by a change in wavelength and speed of the waves.
Diffraction of waves is referred to the change in the direction of waves when they move around a barrier in their path or pass through an opening. Interference occurs when two waves traveling through the same medium superpose to form a wave having the same or lower or greater amplitude.
Answer:
.......................
Explanation:
A net force = unbalanced force. If however, the forces are balanced (in equilibrium) and there is no net force, the object will not accelerate and the velocity will remain constant.
Answer:
The answer is
<h2>2560 J</h2>
Explanation:
The kinetic energy of an object given it's mass and velocity can be found by using the formula
where
m is the mass
v is the velocity
From the question
m = 80 kg
v = 8 m/s
The kinetic energy is
We have the final answer as
<h3>2560 J</h3>
Hope this helps you
The angle is found by taking the arctangent of the vertical angle divided by the horizontal angle
θ = arctan(18/25) = 35.75°
36° is the closest answer.
