To find the x component use the following formula, where Ф = theta = the angle 'a' makes with the x axis.
Potential difference excites the electrons inside the material of the wire used throughout the circuit, due to this excitement the electrons start flowing to the higher potential (positive terminal) & due to their motion, current is directed in the opposite direction to the electron flow.
Given that,
For glasses:
distance, s = 42 m
a= -g = -9.81 m/s²
we can calculate time taken by glasses to hit the ground as follow:
s= Vi* t + 1/2 at²
Since at top initial velocity, Vi= 0
42 = 0 - 0.5* 9.81 t²
t = 2.926 s
Pen is drop 2 second after the glasses is dropped. So time difference will be:
Δt = 2.926 - 2 = 0.926 s
Distance covered by Pen in 0.926 s can be calculated as:
s = 0 - 0.5* 9.81 * 0.926²
s= 4.2 m
Distance of pen from ground will be, 42-4.2 = 37.8 m
When the glasses hit the ground, the pen will be 37.8 m above the ground.
Answer:
A South pole repels a nort pole is not true
Explanation:
South pole attract north pole
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