Question
Protons were discovered
bySolution
In 1911 Ernest Rutherford who performed many experiments to explore radioactivity did an experiment in which he discovered that the atom must have a concentrated positive centre charge that contains most of the atom’s mass. He suggested that the nucleus contained a particle with a positive charge the proton.
You are asked to jog in a circular track of radius 35 m. Right one complete round on the circular track, your displacement and distance covered by you r...
What is the momentum of a 2 kg object moving at 3 m/s? Â

A larger force on a rotating body results in larger _____.
When a cannonball is fired, its motion is an example of ______.
A thin conducting rod of length 3 m is aligned vertically (along the z-axis) and is moving in space with a velocity vector v = (i + 4j) m/s within a un...
A stone of mass 0.3 kg tied to the end of a string is whirled round in a circle of radius 1.2 m with a speed of 20 rev./ mim in a horizontal plane. Wha...
A body starts from rest and accelerates uniformly. After t seconds, it covers a distance S. What is the ratio of the distance covered in the first half ...
The half-life of a radioactive substance is 5 hours. How much of the substance remains after 15 hours?   Â
How much energy is consumed by a 100 W bulb in 2 hours?