Answer:
Explanation:
The electric force between two point charges can be calculated by Coulomb's Law:
We have to calculate the distance between two points; (0,0) and (0.3 m, 0.2 m).
Now we can apply Coulomb's Law
The minus sign in front of the force means that the force is attractive.
The direction of the force can be calculated as follows:
where θ is the angle between F and the x-axis. This angle can be calculated by the triangle with edges 0.3 m, 0.2 m, and 0.36 m.
So, sin(θ) = 0.2/0.36 = 0.55 and cos(θ) = 0.3/0.36 = 0.83.
Finally,
The time required to travel that distance at the given speed is determined as 15.84 seconds.
<h3>Time of motion</h3>
The time of motion of the person is calculated as follows;
Distance = speed x time
time = distance/speed
where;
- distance = 500 m = 0.31 mile
time = (0.31 mile)/(70 mph)
time = 0.0044 hr = 15.84 seconds
Thus, the time required to travel that distance at the given speed is determined as 15.84 seconds.
Learn more about time here: brainly.com/question/10428039
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Answer:
Explanation:
the light ray leaving a medium in contrast to the entering or incident ray.
Option (B)is correct.
Alternating electric and magnetic fields has electromagnetic radiation that travel in the form of a wave.
The varying or alternating electric field produces the varying magnetic field.This varying magnetic field in turn produces varying electric field . Thus these varying electric and magnetic fields travel in the form of electromagnetic waves. These electromagnetic waves travel with the velocity of light.These are transverse in nature.