Physics Past Questions and Answers

Which of the following radiations constitutes a stream of electrons?

\(^{226}_{88}Ra\) emits two alpha particles to produce polonium(po) nuclide. The correct formula for the nuclide?

Two angles of a pentagon are in the ratio 2:3. The others are 60<sup style='font-size: smaller;'>o</sup> each. Calculate the smaller of the two angles

(a) What is a projectile?<br/>(b) Give the reason why the horizontal component of the velocity of a projectile remains the same at every point of its flight.<br/> <br/> <br/> <br/> <br/> <br/>

A body is projected at an angle of 30° to the horizontal with a velocity of 150 ms\(^{-1.}\). Calculate the time it takes to reach the greatest height [Take g = 10 ms\(^2\) and neglect air resistance]