A60-cm-long heating wire is connected to a 120 v outlet. the wire dissipates 45 w. what is the current in the wire

wavelength divides in half and speed stays the same.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.