The dimensional formula for torque is same as MCQ with Answer and Explanation

Explanation:
Geostationary orbit period equals Earth's rotation period, 24 hours.

Explanation:
Water has exceptionally high specific heat (4200 J/kg°C) due to hydrogen bonding. Used as coolant. Iron ~450, copper ~385, aluminium ~900. High specific heat moderates climate.

Explanation:
Work done by a variable force is the definite integral of F dx. W = Integral(3x^2 + 2x) dx from 1 to 2. W = [x^3 + x^2] evaluated from 1 to 2. Upper limit: (2^3 + 2^2) = 8 + 4 = 12. Lower limit: (1^3 + 1^2) = 1 + 1 = 2. Work = 12 - 2 = 10 Joules.