Recent content by lasha1

Thanks guys

If t is useful. For example during 1 hour.

I want to know how to conduct I ampere current through solution. For example i have 9V battery and 1 liter of water and i conducted electricity through water. How to calculate the current ?

To calculate velocity of the rocket: v1=m2/m1 × v2 where v1 and m1 is mass and velocity of rocket and v2 and m2 is the mass and velocity of fuel. Problem: m1 is saying that you have to decrease the mass of the rocket and increase the mass of fuel. But if you decrease the mass of rocket, the...

Ok. Forget about 2N4401. We can take this simple circuit Lamp is 30mW 5V Battery 5V Beta=100 Which transistor can i use in this circuit and how to find it. On datasheet there is many hFEs.

OK. On datasheet of transistor 2N4401 there are many DC current gains (hFE). Which one is useful. I want to use it over 5V and 60mA.

We know that a=v-v0/t so waves have acceleration but it depends on what kind of wave it is. For example sound wave have acceleration if we change temperature when sound created.

I khow water conducts DC electricity but AC ?

Thanks

Therefor when the electrolysis whoud be done you chould have NaOH solution?

In electrolysis of nacl where is sodium? Ok clorine is producing as gas but sodium?

Yes. But I checked lenz's law:biggrin:. I understand it. Thank you.

Ok FastChecker. But with Joule lenz's law we can get the following formula: Pt=mcΔt where P is power of kettle and t is time that needed to get heat.

I think it's the following formula: cmwaterΔT=qmfuelt where t is time q is specific heat of fuel.

Can anyone tell me the formula. For example: How long does it take to boil 1kg 20°C water in steel container. With 1 kg of coal (or something). I want to understand the formula of time attitude to heat.:smile: