Please tell me the correct answer. A. There is a girl named Ankita who lives in Maharashtra. B. There was a girl named Ankita who lived in Maharashtra.

Answer:

wheels are round in vehicle so that the vehicle would be easily move forward and backward without any problems.

Answer:  Wheels are made round in the vehicles to minimize the fictional force and to give a smooth ride without up and downs.  

Explanation:

• Wheels are made round in the vehicles to minimize the fictional force. It also minimizes the surface in contact with the ground.
• Therefore least frictional force acting on the whole wheel at a given time. As the wheels are round the force is remain same all the time which gives and height of rider remain uniform. Thus the journey become smooth without up and downs.
• If wheels be  square or triangular wheels because when a wheel is square or triangle relatively more surface come in contact which the ground hence more frictional force which could damage the wheels.

Answer:

We need to separate substances from mixture because the components of the mixture could be useful example we seperate curd, butter, cheese from milk as they are useful to us.

Answer:

We need to separate different components of a mixture to separate the useful components from the non-useful or some harmful components

Answer:

Physical changes in matter are reversible: An ice cube can melt into liquid water, and then the liquid water can be frozen back into an ice cube. Chemical changes, on the other hand, are not reversible: A log burned in a fire turns to ashes, but the ashes cannot be changed back into a log.

Explanation:

Answer:

hi dear

What's your name?

Answer:

hahaha you are so cute and cute and cute and cute and cute and cute and