Explain, in terms of energy, the process which takes place as a solid at its melting point changes into a liquid at the same temperature.

Which changes of state do the labels represent? a: b: c:

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?

What is part of a line has one endpoint and continues in one direction?