Un peso da pesca di 100 g è tenuto in rotazione su un piano orizzontale da un filo di nylon lun-
go 1,2 m. Il pesetto compie un giro in 0,40 s.
Calcola:
• la frequenza del moto;
• l'accelerazione centripeta cui il pesetto è sot-
toposto espressa in unità g. [2,5 Hz; 30 g]​

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

The movement of electrons between atoms is called an

The field lines around one end of a bar magnet are shown below based on the diagram, what can you conclude about the pole of the magnet? a. is a south pole because the field hnes spread out from this end b. a north pole because the field lines spread out from this end c. a nouth pole because the field lines enter the magnet at this end d. is a north pole because the field lines enter the magnet at this end