Which two planets possess the closest length of day? a. Uranus and Neptune
b. Jupiter and Saturn
c. Earth and Mars
d. Mercury and Uranus

C.

Explanation: Earth and Mars have the closest length of day. Earth has 23 hours and 56 minutes and Mars has 1 day and 37 minutes. If this is incorrect then it must be B. Both were close.

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

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

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//