What is the chemical formula for methane?

Which of the following is an example of a non-contact force?

Which type of energy is associated with the position of an object in a gravitational field?

What is the name of the process by which a substance changes directly from a solid to a gas without passing through the liquid phase?

Which part of the human brain is responsible for coordinating voluntary muscle movements and balance?

What is the function of the gallbladder in the digestive system?

What is the SI unit of resistance in an electrical circuit?

What is the principle behind the functioning of a magnifying glass?

In optics, what is the term for the point at which parallel light rays either converge or appear to diverge after passing through a lens?

What is the name of the process where a solid changes directly to a gas without passing through the liquid phase?