Help ;-; Replace the pencil with an iron nail (Doc.19 in pic)

1. does the lamp glow?

2. does an electric current flow through the lamp?

3. Does the iron nail conduct the electric current?

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.