A student wants to lift a 250 N bucket of water up from the bottom of a well using a wheel and axle. The wheel has a radius of 75 cm, and the axle has a radius of 20 cm. How much force will the student need to provide to the wheel to turn it and lift the bucket? A. 66.7 N
B. 37.5 N
C. 1667 N
D. 938 N

66.7 N

Explanation:

F(input) x r(input) = F(output) x r(output)

r=radius for wheel and axle problems

F=force

Because it asks for the force on the wheel, we would have the missing variable with the radius of the wheel. Let x be the missing output force. So by plugging in the givens we get:

(250 N) x (20 cm) = x (75 cm)

x= 66.7 N

gans

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vestigial organs (like your appendix) are organs that no longer serve a purpose.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: