A unit vector is represented by `ahati + bhatj + chatk`. If the values of a and b are 0.6 and 0.8 respectively, find the value of c.

Find the value of .^10C_0

Find the value of .^20C_0

If the points (a,0), (0,b) and (1,1) are collinear,then find the value of 1/a+1/b

The thermal capacity of 8 liters of a liquid A is equal to the thermal capacity of 10 liters of liquid B.If the densities of the liquids A and B are 0.5 g/ cm^3 and 0.6 g/ cm^3 respectively ,find the ration of their specific heats.

If the distance between the points (a, 0) and (0, 4) be 5 units, find the values of a.

What is the value of in_0 in S.I. unit?

If alpha and beta are roots of x^2 - 6x + a = 0 and 3alpha + 2beta = 20 , find the value of a.

If the mean of 6,11,x,8 and 5 is 8,what is the value of x?