Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities..Radio carbon dating is used to estimate the age of the fossils.

It is only angular momentum which has both direction and magnitude.

In astronomical telescopes multiple lenses are connected with some desired angles so that everything can be seen from a particular distance.

If you connects too much appliances in parellel circuit & switched on same time then maximum amount of current is drawn. Sockets w'll be over heated and produces sparking due to which wiring w'll be burn.