Sir

i have got a assignment to research on what is the best way to make electricity out of water.I am in year 9, ill be grateful if anyone could help me

Displacement of 10 meters due north and 20 meters due north-east

the answer comes to 28 meter, 30.3 degrees North of East

am a student from New Zealand, i am doing a report on stem cell research, i was wondering if i can get the average cost of treatment for stem cell transplantation, in different countries such as USA, UK, Australia, China, etc. and also how many patients require stem cell treatment every year in those countries. I have to use those as statistics for my report but i am not being able to find out costs of treatments on the Internet. some references would be great with the answers. any help would be appreciated.

Thanks

can he get the admission in any medical college or university in any of the saudi arabia institution, is there any good english schools for my another son doing year seven, specially in madina or jiddah, i will prefer madina, or jiddah, alternatively i can let them stay in Riydh as well, provided there is any possibility of admission, they dont understand arabic, Can any one guide us properly. Jazakallah.

can any one solve this equation for me please, it is solve able equation, that i know. but i am not being able to solve it.

Find the value of a and b, kindly give me the reason and logic for solving it. thanks.

can any one tell me how many possible outcomes or groups of six numbers can be made from forty numbers, and what formula will be applied. is that 40 multiplied by 6 factorial ????

thanks

zinc metal is placed in copper(II) sulfate equation.my question is while balancing the equation why don't we consider sulfate, we balance eq. like Cu(2+) + 2e-==>Cu, and

Zn==>Zn(2+) +2e- therefore

Cu(2+) + Zn+==>Zn(2+) +Cu.

similarly for Zinc metal converting iron(III) chloride to iron(II) chloride solution, we do half equation balancing but we don't mention about chloride why? can some one explain in a simple way please. this equatio is balanced like this:

Fe(3+) + e-==>Fe(2+)...then Zn==>Zn(2+) + 2e-

2Fe(3+) + Zn(2+) + Fe(2+)

ann is 12. bob is twice as old as ann was when bob was when bob was as old as ann is now. how old is bob.

then answer is bob is 16 years old. kindly explain to me how to solve this question.

It means mass of matter always remain same. what about human beings, animals and plants, they grow from a tiny cell and grow to a mass of 100 kg to many many tonnes. how about that new mass or new matter. For example a whale is created from a tiny cell ( thats the matter, having mass of few ounces) and grows to several tonnes. it is like a new matter created of several tonnes.isn't it.

New zealand is located at the lower part of the globe , which is practically hangging downward in the space, as compared to the northern part of the world, so the people living in new zealand should feel hanging upside down, while this is not the case why??