Explain how solar wind energy is transferred to the polar cap ionosphere by considering a solar wind speed of 300 km/s and interplanetary magnetic field bimf of 5 nt in the -zhat direction, then: (a) obtain an estimate for the polar cap electric field ie (b) describe the ionospheric current systems in the polar cap. do you expect energy dissipation from these currents? why? or why not? (c) describe the magnetic perturbation on the ground below the polar cap from these currents

c

explanation:

b

explanation:

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.