Choose the correct alternatives
: If the angle between ground and inclined plane is small/big/medium, then the mechanical advantage of that inclned plane is greater.

Fill in the blanks : The mechanical advantage of inclined plane is always______than 1.

Choose the correct alternative : [MCQ] Correlation coefficient lies between-

Choose the correct answer and give justification for each. (i) The angle between a tangent to a circle and the radius at the point of contact is

A body is sliding down an inclined plane having coefficient of friction 0.5. If the normal reaction is twice that of the resultant downward force along the inclined plane , then find the angle between the inclined plane and the horizontal.

Choose the correct alternative : [MCQ] For a random variable x the relation between E(X^2) squareE^2 (x) .

Find the angle between the planes x-y+2z=9 and 2x+y+z=7.

Find the angle between the plane x-y+2z=9 and 2x+y+z=7