Physics Questions and Answers

A 500N box rests on a horizontal floor. A constant horizontal force is exerted on the box so that it moves through 8m. If the coefficient of kinetic  friction between the floor and the box is 0.22, calculate the workdone on the box
 

Which of the current-voltage characteristics shown below is that exhibited an ohmic conductor? 

The velocity of sound in air at 15°C is 35400ms$^{-1}$. Calculate the velocity at 47$^o$C

A parallel plate capacitor is charged and the charging battery is subsequently disconnected. lf the plates of the capacitor are moved farther apart by means of insulating handles, the

A beam consisting of $\alpha$-particles. $\beta$-particles and $\gamma$-rays pass through a magnetic field at right angles to the direction of the field. Which of the following observations would be made about the $\alpha$-particles, $\beta$-particles, and $\gamma$-rays respectively?