Are you given the volume of a honeybee?
Ok, thank you. I will get this written up right away.
That is the diameter of the bee, correct?
or is it 1 cm³?
he was not precise i think it was the size
Actually, since (1 cm)³ = 1 cm³, it does not matter.
The formula for volume from a diameter is 4/3*π*(d/2)³, so the human cell is 4/3*π*(5 * 10^(-7))³ = 5.23598776 * 10^-19 m³
forgive me, but i am having tech problems tonight. Computer keeps freeziong on me.
sorry but where did you get 4/3? i was using formula density = m/v
Going from diameter to volume of a sphere is 4/3*π*r³
and r = d/2
he said we do not have to use the radius he wants the density
You need the volume before you can use the density formula.
The question is to find the mass. You are given water as mass/volume. You need to get the volume to solve.
sorry is this for the bee or cell
The mass of the cell is 5.23598776 * 10^-19 m³ * 103 kg/m³ =NNN-NN-NNNN* 10^-19 kg = 5.39306739 * 10^-17 kg
could you explain via a formula d=v/m please
Sorry, frozen again. Be patient with me.
Sure. density is mass over volume. 103 = m / 5.23598776 * 10^-19
Solve for m by multiplying both sides by 5.23598776 * 10^-19 to get m = 5.39306739 * 10^-17
I am going to assume the 1 cm for the honeybee is the diameter, since you were given the diameter for the other problem.
[Is this showing on your side?]
v = 4/3 * π * (0.005 m)³ = 4/3 * π * 1.25 * 10^-7
d = m/v, so 103 kg/m³ = m / 1.25 * 10^-7 m³
Multiply both sides to 1.25 * 10^-7 to get
1.2875 * 10^-5 kg
Does that all make sense? If not, I can write it up in a word file with all the units lined up for you.
whats the unit for the 5.23 ans
kilograms. That is the unit that is given by your instructor for the mass of water.
It is also the standard form of mass units.
could you write up a word file cause i am lost
Certainly. How fast do you need it?
It's about midnight there, right?
(I'm never sure with daylight savings time)
All right. I'll get on it. Will have it all doen within a half hour. Will work?
plus I need to seriously reboot this computer.
ok i will be waiting
Ok, I'm on it. I'll be back as soon as I can.
i am confused the diameter of the cell is 10cubes
how do you superscript in this chat
hold down <alt> and type 253 to get ², and type 0179 to get ³
If the diameter is 1 cm, then the radius is 0.5 cm. The volume is 4/3 * π * (0.5 cm)³
0.5 cm = 0.005 m = 5 · 10^-3 m
(5 · 10^-3 m)³ = 125 * 10^-9 m
no the diameter of the cell is 10^-6m
Oh, I get it. That is 10 to the -6 power. 0.000001 m
Half that is 0.0000005 m is the radis
= 5 · 10^-7
can you please give me both ans explained so i can finish my revision question
I am typing right now
See if you can read this.
The numbers look very similar, since the diameters are 5*10^-7 m and5*10^-3 m
oops. Radii, not diameters.
thanks got quest 1 but where do you get (5x10^7)??
in you ans in word you sent me its after phi
For some reason, the last cople things you typed are not showing. I am going to switch this to Q&A format rather than chat, so I can see everything.
Rate the answer, please. That is how to give credit for the answers now.