Calculate the area of the solar cells required to produce 100w of power for a cylindrical spin stabilized spacecraft such that the spin axis is normal to the solar flux. also calculate the size of the batteries required to provide power during eclipse period the orbital period is 90 min and the eclipse duration is 30 min

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?