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For the following questions answer them individually
Study showed the percentage of occurrence of an activity as 50%. The number of observations for 95% confidence level and an accuracy of $$\pm$$2% is
1 m$$^3$$ of air at a pressure of 10 kg/cm$$^2$$ is allowed to expand freely to a volume of 10 m$$^3$$. The work done will be
Suppose that a particle moves on a coordinate line so that its velocity at time t is $$v(t) = t^2 - 2t$$ m/s. The displacementofthe particle during time interval $$0 \leq t \leq 3$$ is
Two loads P act at right angles to one another at the free end of a cantilever beam having square cross-section $$d \times d$$ and length l on the vertical and horizontal faces. Maximum bending stress in the beam will be equal to
‘Two plane slabs of equal areas and conductivities in the ratio 1 : 2 are held together and temperature in between surface ends are $$t_1$$ and $$t_2$$. If junction temperature in between two surfaces is desired to be $$\frac{t_1 + t_2}{2}$$, then their thicknesses should be in the ratio of
