A molecule that speed up a reaction

Dalton's model of an atom is best described as

When scientists state that energy transformation are inefficient, do they mean energy is destroyed? Explain why.

Is water wet yes or no?

Mr. and Mrs. Tew attended this summer band concert to her their son play his violin. When they sat down in their seats, they noticed that there were dead moments.

A force of 8,480 N is applied to a cart to decelerate it at a rate of 32.0 m/s2. What is the mass of the cart?

A certain rock contains large jagged pieces of other rocks cemented by fine particles what type of rock is this explain

Could a nucleus that has one proton but no neutrons exist?

Which physical quantities has the unit kg·m·s-1?

Can an object travel at the speed of light? Why or why not?

Determine the amount of potential energy of a 5 Newton's book that is moved to three different shelves on a bookcase. The height of the shelves is 1.0 meter, 1.5 meter, and 2.0 meter