kamy

Can someone explain to me how to answer this question, thanks If all of the energy from the decay of 14C in your body could be captured and converted into electricity, how many "radioactive" people would be required to power a 100 W light bulb?

can someone explain how to go about solving this? i dont want the answer..just help me on the steps thanks If all the H2O(g) in the atmosphere (assume it is 1% by volume) suddenly condensed to H2O(l), and all the enthalpy of this process was captured and converted to electrical energy, how long would this energy power a capital city?

The Leaning Tower of Pisa is 55 m tall and about 7.01 m in diameter. The top is displaced sideways by 4.49 m from where it would be if the tower were vertical. The tower is in stable equilibrium right now, but how much farther can it lean before it becomes unstable? Assume the tower is of uniform composition. how do i approach this?

The distance between a carbon atom (m = 12 u) and an oxygen atom (m = 16 u) in the carbon momoxide, CO molecule is 1.12angstrom, where 1 angstrom is 1.0E-10 m. How far from the carbon atom is the center of mass of the molecule? Give your answer in angstroms. n.b. "u" is the atomic mass unit or 1.66E-27 kg. However, you do not need to use this conversion as you will find that the "u"'s will cancel. An 0.0200 kg rifle bullet traveling 232 m/s buries itself in a 3.70 kg pendulum hanging on a 2.80 m long string, which makes the pendulum swing upward in an arc. Previous examples worked out the vertical displacement,for this question, determine the horizontal component of the pendulum's displacement. Give you answer in m. Hint: Determine the vertical component, then use Pythagoras's theorem on the triangle formed by the horizontal displacement and the length of the pendulum string. PLEASE HELP

so what i did was 6.02 X 10>23 ----is 18 g///// therefore 5000/0.018 X 6.02 X 10>23 .....1.7 X10>29.....therefore its 1.7X1030 Correct?

can you work it out...and show me the steps

can someone solve this question: How many electrons are there in a 5000kg elephant? answer with reasoning please much thanks.................................................