Question
Specific heat of aluminum when 26000 J of energy is
supplied to 4 kg block and it's temperature rises from 25°C to 35°C isSolution
Given that, Q = 26000 J, m = 4 kg ΔT = 35 - 25 = 10 K we know that, specific heat is given by Q = mCΔt ⇒ 26000 = 4 × C × 10 ⇒ C = 650 J/kg-K
If x + y + z = 4, xyz = 6 & x2 + y2 + z2 = 8 then find the value of x3 + y3 + z3.
If the ratio of the areas of two triangles is 4:3 and the ratio of their heights is 3:4, then the ratio of the lengths of their bases will be

(123×123×123 + 130×130×130)/(123×123 - 123×130 + 130×130) = ?
Find the value of
(1 - `1/(p+1)` ) + (1 - `2/(p+1)` ) + (1 - `3/(p+1)` ) + ........................... + (1 - `p/(p+1)` )
If x² + x = 11
find (x+4)³ +1/((x+4)³)

If x² + px + q = 0 has roots 4 and -3, find the values of p and q.
If (x² + 1)/x = 3, what is the value of (x¹² + 1)/x ⁶ ?
If x = 19, then the value of x5 - 20x4 + 20x3 - 20x2 + 20x - 1 is