In the case of a fluid, Bernoulli's theorem expresses the application of the principle of conservation of:
(A) linear momentum (B) energy (C) mass (D) angular momentum
Answer
Answer: B The equation of Bernoulli's has the components of pressure energy, kinetic energy and potential energy. It follows the conservation of energy principle.
Two points masses of mass \(4m\) and \(m\) respectively separated by distance \(r\), are revolved under mutual force of attraction. Ratio of their kinetic energies will be (A) \(1 : 4\) (B) \(1 : 5\) (C) \(1 : 1\) (D) \(1 : 2\)
A car can finish a certain journey in 10 hours at the speed of 48 km/hr. By how much should its speed be increased so that it may take only 8 hours to cover the same distance ? (in km/hr)
The product of all real values of x satisfying the equation \(\sin^{-1}\cos \left ( \dfrac{2x^{2}+10\left | x \right |+4}{x^{2}+5\left | x \right |+3} \right )=\cot \left ( \cot ^{-1}\left ( \dfrac{2-18\left | x \right |}{9\left | x \right |} \right ) \right )+\dfrac{\pi }{2}\) is
The projections of the line segment joining points P(-1, 2, 3) and Q(1, 0, 4) on a line inclined equal acute angles with the coordinates axis is (A) \(-\dfrac{1}{{\sqrt 3 }}\) (B) \(\sqrt 3 \) (C) \(\dfrac{1}{3}\) (D) \(\dfrac{1}{{\sqrt 2 }}\)
Choose the correct answers from the following alternatives given TheInternational Court of Justice (ICJ) is situated in ___________. (A) Vienna (B) The Hague (C) Geneva (D) New York