How will energy from food, temperature, and electrical power be cycled through your biosphere? please i need some help to understand im having a hard time understanding what its asking me. this is a missing assignment i need help ASAP

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

Smallest intensity of a stimulus that you can detect 50 percent of the time is