class 9 physics

The half life of radon is 3.8 days. Calculate how much radon will be left out of 10.24 milligram after 19 day..

- This is a representative list of topics covered in our Grade 9 Physics program - however all programs will be customized for the individual studen..

01. A body of mass 2kg is raised to a height of 25m. Calculate the potential energy possessed by the body. Solution: Mass of the body (m) = 2kg Height (h) = 25 m Potential energy of the body = mgh 02. A bag of rice weighs 75kg. To what height is it raised if the work done in lifting it is 4900 J. S..

M.A., V.R. and efficiency have no units as they are ratios between similar quantiti..

Consider an object of mass 'm' placed on the surface of the earth. According to Newton's law of gravitation, the gravitational pull of the earth on that object is given by Where F is the force of attraction between the earth and the object, M e is the mass of the earth and R e is the radius of the ..

1) Find the length of a simple pendulum whose time period is 6.28 s. Time period T = 6.28 s. Length of the pendulum = 9.8 m 2) Time taken by a simple pendulum to execute 20 oscillations is 28 s. What is the time period? Time taken to execute 20 oscillations = 28 ..

Wave velocity is defined as the distance traveled by the wave in one second. Or Wave velocity = Wavelength frequen..

The SI unit of velocity is m/s and time is s Acceleration is a vector quantit..

Equations of Motion for a Body Moving under Gravity - The motion of a body under gravity is a uniformly accelerated motion and hence all the equations of motion for uniformly accelerated motion in a straight line is applicable to the motion of bodies under gravity. In the case of a body moving unde..

1. A body weighs 12 kg on a weighing machine on the Earth. If it is taken to the moon, will the weighing machine show any change in reading? If so what is the weight of the body on moon. Solution: There will be a change in the reading shown by the weighing machine. Weight of the object on moon (W ..