Recent content by prishila

Homework Statement The blood that circulates in our body is about 1/12 of our mass. If the kidneys filter 7.5 liter of blood a hour, then how many times does it filter in the kidney the whole blood of a person will mass 60kg? Homework Equations 1/12*60=5 liter blood The Attempt at a Solution...

What should I do next?

Homework Statement 100 ml blood of lung vein contains 14 ml O2. The volume of blood in the left ventricle is 70 ml. Find the amount of O2 the blood absorbs in the lung for a minute. Homework Equations 100ml blood -> 14 ml O2 70 ml blood -> x The Attempt at a Solution Here's what I did 100ml...

In 24 hours 180 liters blood and 0.55*180=99 liters plasma.

The blood that circulates in our body is about 1/12 of our mass. If the kidneys filter 7.5 liter of blood a hour, then how many times does it filter in the kidney the whole blood of a person will mass 60kg? Here's what my teacher did: 1/12*60=5 liter blood 0.55*5=2.75 liter plasma of blood. The...

Sorry I corrected it, the answer in my book is 4.06 ohm

Homework Statement The resistance of a bobbinin 0 grades celcius is 3.35 ohm. What is its resistance in 50 grades celcius? thermal constant=0.0037 Homework Equations R1=R0[1+alpha(t-t0)] The Attempt at a Solution Using this formula R1=3.35[1+0.0037(50-0)]=3.35*1.185=3.96975, but the answer in...

U2 will continue being equal to U3 and won't change.

I understand. But how can this affect the solution of my exercise?

So we can write P=U^2/R U is the same in each resistance in parallel, but it divides in resistances in series. So it is greater in resistances in parallel. This way P is greater when they are connected in parallel. Am I right?

Can you tell me the difference. in my book it says Resistance is in disproportional to the cross section of the resistance.

U2 doesn't change and I2 ... I don't know, it becomes greater?

I think it is. Only if you consider pi to affect that

But it says inversely proportional to the square of section, to the A, not to the diametre.

Homework Statement When the filament of a light is broken why do others continue to light? Homework Equations Parallel: U=U1=U2=U3 I=I1+I2+I3+... The Attempt at a Solution Is it because there are some nodes? How can you explain this simply?