Which of the following is a contact force? A. Gravity
B. Friction
C. Magnetic force
D. Electrical force
SUB

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

answer; how far out of place which the object finished relative to the starting location;

a 2,000 calorie based diet.

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.