Which is a characteristic of a physical change?

The chemical bonds in the substance are unchanged.

The change cannot be seen.

The molecules all move at the same speed.

The substance has reacted with another substance.

A 42 kg is lifted to a height of 9 m. What is the gravitational potential energy?

A force of 70n is applied to a 7kg block that was at rest. the surface is flat and frictionless. how far did the block travel in 10s

Which two elements are abundant in the fresh crust that comes from a spreading center?

Five properties of stationary waves

How does the gravity which pulls the moon and earth toward each other also affect the ocean?

If the volume of a container increases, then the pressure will: A. first increase and then decrease. B. increase. C. stay the same. D. decrease.

How does the theory of natural selection explain the diversity of life?

What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

Which statement would be a valid argument in favor of using nuclear power? There are few negative impacts from mining the fuel. Reactors are safe from natural disasters. There are little to no waste products from fission.

How would you convince somebody that the momentum of an isolated system is constant?