Recent content by helpemz2011

to be perfectly honest i just have no idea.

ok so why multiply by 106? I just don't get it? sorry being extra thick today emz

39ppm?

how do i get it into %?

nope tried even that is escaping me

Homework Statement At sea level, there are approximately 2.6 × 1025 molecules m-3 of the atmosphere. One of the gases making up the atmosphere has a concentration of 3.90 × 1021 molecules m-3. What is the concentration of this gas expressed in parts per million (ppm)? Homework...

cheers its a pain in the backside writing (p-o) all the time thank you both x

ha solar constant x area facing the sun! so 5.20x10(p-o)2 x 3.6x10(p-o)13 = 1.872x10(p-o)16 to appropriate significant figures -1.9x10(p-o)16 W

Yeah that's what is in the question. and W? I just don't know I might just give up on this question sorry Emz

6.9x10(p-o)14 W ?

Divide the area facing the sun by the solar constant?

Joules?

To be honest i really don't know sorry i am really stuck. Are my calculations on the right track? emz

Homework Statement Earth and Mars are both rocky planets, but Mars is half as far away again from the Sun as Earth, so radiation from the Sun is not as powerful at the surface of Mars as at the Earth’s surface. Using the values in Table 2, calculate the amount of solar radiation...

thank you very very much emz