Three forces involved in brushing your teeth are first push, then pull, then push.
Answer:
a
Explanation:
because it has compact molecules
Answer:
<h2>
The magnitude of the magnetic is 0.145 T</h2>
Explanation:
Given :
Speed of proton 
Mass of proton
Kg
The force on the proton in magnetic field is given by,

But
(∵ Force is perpendicular to the velocity so
)

When particle enter in magnetic field at the angle of 90° so particle moves in circle
So force is given by,

Where
radius but in our case 0.23 m,
C
By comparing above two equation,


T
When light passes through one transparent medium to another transperent medium it bends and that beding of light is know as refraction of light !