Atank is half full of oil that has a density of 900 kg/m3. find the work w required to pump the oil out of the spout. (use 9.8 m/s2 for g. assume r = 3 m and h = 1 m.)

The work W required to pump the oir out of the spout is

Step-by-step explanation:

We are given the density of the oil, and we can calculate the volume of the oil as

because the tank is half full.

The we can calculate the oil mass as

Now, to calculate the work W necessary to pump the oil out, we have that

where m is already calculated, g is given in the problem, and h goes from 0m to 1m.

Finally we can calculate the work W:

Therefore

is the work required to pump the oil out of the spout.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3