iPad 24% 8:16 AM webassign net My Notes 4. 1.66 points SerCP10 1.P.005 Newton\'s

Question

iPad 24% 8:16 AM webassign net My Notes 4. 1.66 points SerCP10 1.P.005 Newton's law of universal gravitation is represented by Mm where F is the gravitational force, M and m are masses, and r is a length. Force has the SI units kg m/s2. What are the SI units of the proportionality constant G? m kg s kg s m kg s kg s Need Help? L Read It My Notes 5. 1.66 points SerCP10 1.P.016 A small turtle moves at a speed of 690 furlongs per fortnight. Find the speed of the turtle in centimeters per second. Note that 1 furlong 220 yards and 1 fortnight 14 days. cm/s Need Help? Read It 66 points sarcp10 1 p01 My Notes

Explanation / Answer

4) option is C

G= F.r^2/M.m = N.m.m/kg.kg

= kg.m.m.m/kg.kg.s^2

= m^3/(kg.s^2)

5)

1 inch = 2.54 cm (exactly)
36 in = 36*2.54 cm = 91.44 cm
1 yard = 36 in = 91.44 cm
220 yds = 220*91.44 cm = 20116.8 cm
1 furlong = 220*91.44 cm = 20116.8 cm

1 fortnight = 14 days
= 14 days * 24 hr/day = 336 hr
= 336 hr * 3600 sec/hr
= 1209600 sec

1 furlong/fortnight = 20116.8 cm / 1209600 sec
186 furlongs/fortnight = (690 * 20116.8 / 1209600) cm/sec
11.4753 cm/sec

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