4. The two collars A and B are initially at rest. The accelerations of the collars A and B are: aA = 2.5 t in s 2 upward aB = 15 in s 2 downward (a) What is the time at which the velocity of block C is again zero? (b) Find the distance through which block C will have moved in that time (the total time that block C is moving).

Not all tiles will be usedidentify the element present in each star based on the gaps observed in wavelengths of its light refer to this table containing absorption wavelengths (in nm) of several different elements the table ishelium 447, 502 ,587 ,668carbon 427 ,515, 600 ,678sulfur 425, 565, 639, 675xenon 484, 590, 687calcium 429 ,527, 593, 645silver 421 ,521, 662

In a laboratory, nakisha mixes sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could she use the scientific inquiry process to explore it further?

What is created when solids, liquids, an gases mix with one another