Which nanomaterial is used for tyres of car to increase the life of tyres?

Which nanomaterial is used in sunscreen lotion? Write its use.

Banking of roads at curve is necessary so as to avoid (A)overturning of vehicle moving with maximum speed. (B) the dependence of centripetal force on the force of friction. (C) rough nature of road surface which increases the force of friction and causes the wear and tear of tyres of vehicle. (D) skidding of the vehicle.

Which fuels can be obtained by microbial processes ? Why is it necessary to increases the use of such fuels ?

Which one of the plant growth regulations would be used if you are asked to increase height of a dwarf plant

A series combination of resistances is used to increase the resistance of a circuit.

Solve the following examples: The velocity of a car increases from 54 km//h to 72 km//h . If the mass of the car is 1500 kg, find the work done to increase the velocity.

From yourknowledge of physiology canyou think of some method of increasing the life of cut plants in a vase?

A car takes 4 hours to cover a certain distance at the speed of 30km/h. If the speed of the car is increased, will it take more or less time to cover the same distance ?

Project : Collect information about various physical quantities used in day-to-day life and the devices used for their measurement .

Concave mirrors are used in torches and in car headlights.