I have been trying to figure out these two problems and for some reason my logic or my math is wrong...please help.
1) What is the total charge (in C) on all the electrons in 7.0kg of water.
--what I did. 7000g/18g * 6.022E23 to give me the # of electrons (2.3419E26) then I plugged that...
I can't seem to get this problem to work out...any suggestions?
-HOw much water would have to evaporate from the skin/min to take away all of the heat generated by basl metabolism (60kcal/hr) for a 65Kg person.
Ok so I may be grasping at straws but would I do this:
(using constant-acceleration formula)
v=4.5m/3X10^-6
v= 1.33x10^6m/s= (2a(4.50m))^1/2
a=1.98x10^11m/s^2
a=F/m
1.98x10^11m/s= F/9.11x10^-31kg
etc? Even close. Eventually my units don't work out so I am thinking this isn't the...
An electron is released from rest in a uniform electric field. The electron accelerates vertically upward, traveling 4.50m in the first 3.00us after released. What are the mag and direction of electric field and are we justified in ignoring the effect of gravity (justify quantitatively)...