What is angular impulse ?
Answer:-
If in a very small time interval their is a large torque applied on a body then the change in angular momentum of that body is known as angular impulse.(Vector quantity)
As,
angle of contact.
It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact The value of angle of contact depends upon (i) Nature of solid and liquid in contact (ii) Cleanliness of the surface in contact (iii) Medium above the free surface of liquid
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