A corona is the outermost layer of the solar atmosphere mainly visible during a solar eclipse. It can reach up to 1 million degrees Celsius. But the sun is 6000 degrees Celsius. How can heat flow from a cooler body to a hotter body. This goes against the laws of thermodynamics

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?