It is easier to roll a stone up a sloping road than to lift it vertical upwards because

Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to

Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

Metals are good conductors of electricity because

Radiocarbon is produced in the atmosphere as a result of