Neptune has a mass that is about 17 times the mass of Earth. The distance between the Sun and Neptune is about 30.1
times the distance between the Sun and Earth.
If the gravitational force between the Sun and Earth is 3.5 x 1028 N, which is closest to the force between Neptune and the
Sun?
O
6 x 1026N
O 6x102 N
O 6x 1024 N
O 6x 1028 N

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

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.