eon stands at the seashore gazing at the tides (which are caused by the isthe gr
ID: 1445822 • Letter: E
Question
eon stands at the seashore gazing at the tides (which are caused by the isthe gravitational force on that person due to the Moon? The mass il Asanhow large Moon is Moon), how large is is 7.35 x 1 Moon), how7 351022 kg, the distance to the Moon is a82-108 m, and G#667x 10-11 the of ULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 12) Find the orbital speed of an ice cube in the rings of Saturn. The mass of Saturn is 5.68 x 1026 kg,and use an orbital radius of 1.00x 105 km. (G- 6.67 10-11 N m2/kg2) (-/-C) 9.40 km/s A) 138 km/s B) 27.5 km/s D) 19.5 km/sExplanation / Answer
Q1
F = G*m*M/ r^2
= [(6.67*10^-11)*60 * 7.35*10^(22) ] / [3.82*10^8]^2
= 0.0020157 N ..................answer
Q2
mv^2/r = gravitational force between Saturn and ice cube
mv^2/r = G*m*M/ r^2
v^2 = G*M/r
V^2 = [6.67*10^-(11) * 5.68*10^(26) ] / (10^5 *10^3)
V =19464.2 m/s
V = 19.5 km /s
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