A resistor has a resistance of 50 Ohms. If a 9V battery is connected to it, how much current flows in the wire? Remember to show all your working out.

Give your answer a unit.

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?