problem 3: a solar cell is operating at 25°c where the output current is 1 a and the load voltage is 0.51 v. the series resistance of the cell is 20 mω and the parallel resistance is 2 kω.

i think the answer is a and b

i wish you luck

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft