Tom Sawyer and Hu k Finn an ea h row a boat at 5 ft/s in still water. Tom hallenges Hu k to a ra e in whi h Tom is to row 2000 ft a ross the Mississippi to a point exa tly opposite their starting point and ba k again, while Hu k rows to a point 2000 ft dire tly downstream and ba k up again. If the Mississippi ows at 4 ft/s, whi h boy wins and by how long?

Huck will go down steam at a velocity of 8ft/s, so it will take 250s.

then when Huck is back at a velocity of 2ft/s, it will take with him a bout 1000s, so a total of 1250s.

Tom will be going through a velocity of 5ft/s in magnitude, however, this velocity will have a component of 3ft/s to the right, so the effective velocity will be squareroot(25-9)=4ft/s

so it will take 500s to go

and to go back the same thing will happen at the opposite side, and the effective velocity will also be 4ft/s, so also 500s, with a total of 1000s, so Tom will win, by 250s.

Step-by-step explanation:

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step-by-step explanation:

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.