What is rolling friction? How does it arise?

What is respiration? How does it occur?

What is the respiration? How does it occur?

What is diffraction of light? How does it differ from interference? What are fraunhoffer and Fresnel diffractions?

What is carbon dating and how does it work ?

What is rolling kinetic energy ?

Answer the following : What is buoyant force ? How does it act on a body which is immersed in a liquid ?

What is carbon dating and how does it work?

What is a geographic meridian? How does the declination vary with latitude? Where is it minimum?

A patient report inedicates presence of excessive quantities of ketone bodies in the urine. What does this indicate? How is it caused?

What is blood clotting? How and when does it occur?