All electromagnetic waves have the same manner of propagation; alternating electric and magnetic fields that's why electromagnetic waves of all wavelengths have the same speed in a vacuum
An altering magnetic field will cause an altering electric field and vice versa. Electromagnetic waves are created from these shifting fields. In contrast to mechanical waves, electromagnetic waves can travel without a medium. The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves or EM waves.
In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves. Almost the majority of the energy that sustains life on our planet comes from electromagnetic waves that flow from the sun to Earth through space. Technology is a necessity for many additional electromagnetic wave sources. Examples include X-rays, radio waves, and microwaves.
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The discovery of it was so important to the study of geology and the study of Evolution because before that, researchers could only determine the relative orders of rock unit and fossils. They can only estimate the length of time involved , but failed to provide any further information
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The correct options are:
2.) the amount of force applied
4.) the direction of a force
5.) the distance over which a force is applied
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Answer:
A force acting on an object may cause the object to change shape, to start moving, to stop moving, to accelerate or decelerate. When two objects interact with each other they exert a force on each other, the forces are equal in size but opposite in direction.
Explanation:
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Answer:
Explanation:
Left block is on surface with higher inclination so it will go down . If T be tension
For motion of block A ,
net force = mgsin60 - (T + mg cos 60 x μ ) , μ is coefficient of friction .
ma = mgsin60 - T - mg cos 60 x .1
10a = 277.13 - T - 16
= 261.13 - T
T = 261.13 - 10a
For motion of block B
T - mg sin30 - mgcos30 x μ = ma
T- 160 - 27.71 = 10 a
261.13 - 10a - 160 - 27.71 = 10a
73.42 = 20a
a = 3.67 ft / s²
common acceleration = 3.67 ft / s²