Answer:
Pure water is considered to neutral and the hydronium ion concentration is 1.0 x 10-7 mol/L which is equal to the hydroxide ion concentration. So the pH is the -log of the [hydronium ion].
Explanation:
Pure water is considered to neutral and the hydronium ion concentration is 1.0 x 10-7 mol/L which is equal to the hydroxide ion concentration. So the pH is the -log of the [hydronium ion].
Answer:
Explanation:
According to Coulomb's law, the magnitude of the force (F) between two objects with the same charge(+Q), separated a distance (d) apart, is defined as:
Here k is the Coulomb constant. The charge on each object is doubled, that is 
:
Answer:
usually x-ray tube filaments are devices that limit the current flow i.e. current cannot easily pass through them or we can say that they are current limited devices. So to allow fine electron transmission control by filament heating current, rhenium must not be used in x-ray tube filaments.
Answer:
1000m3
Explanation:
12000=mass*gravity, considerinh gravity 10
12000=mass*10 then mass=1200Kg
With density 1.2Kg/m3
1.2Kg ... 1m3
1200Kg ... 1000m3
End
De-celleration because speed is lower as time goes on
