A) Radio waves are a form of electromagnetic radiation.
TRUE
It is the type of electromagnetic wave with least energy range and longest wavelength range among all
B) Electromagnetic radiation does not require a medium to travel.
TRUE
This radiation can travel through vacuum also and its speed is maximum in vacuum
C) In a vacuum, electromagnetic radiation travels at the speed of light.
TRUE
speed of all electromagnetic radiation is same as speed of light in vacuum
D) Electromagnetic radiation travels in the form of longitudinal waves.
FALSE
All electromagnetic radiation is always in form of transverse waves
So correct options are
<u>A, B, C</u>
Answer:
Explanation:
Given:
- mass of the object on a horizontal surface,
- coefficient of static friction,
- coefficient of kinetic friction,
- horizontal force on the object,
<u>Now the value of limiting frictional force offered by the contact surface tending to have a relative motion under the effect of force:</u>
where:
normal force of reaction acting on the body= weight of the body
As we know that the frictional force acting on the body is always in the opposite direction:
So, the frictional force will not be at its maximum and will be equal in magnitude to the applied external force and hence the body will not move.
so, the frictional force will be:
1)Kenetic Energy is defined as energy which a body possesses by virtue of being in motion. 2)KE) is KE = 0.5 x mv2. Here m stands for mass, the measure of how much matter is in an object, and v stands for the velocity of the object, or the rate at which the object changes its position..
And I hope this helped :)
<span>92.96 million mi..........</span>
