A thin wire was wound 50times closely over a boiling tube. The total length of the windings was found to be 10 cm . Calculate the radius of the windings ​

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Could someone . i have tried to solve myself but my calculation is off

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good