A roller-coaster car moves around in a vertical loop-to-loop at constant speed and does not fall off the track. When the car is at its lowest point, how does the magnitude of the normal force from the track compare to the car’s weight?

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

3. dark matter

empty space could also be a simple vacuum

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.