Say a string is 3-kool if it contains every 3-bit string as 3 consecutive bits somewhere in it. find a 3-kool string of length 10, and explain why this is the minimum length for any string that is 3-kool.

i think the answer is b

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

measuring things 1 litre of water