Explanation:
first one will be second one
as the charge cancels out
second one will be forth one
as it has possitive charge
Answer:
Q = 75652 J
Explanation:
as we know that we have 25 g ice at -4 degree C
so here we can say
heat require to convert the ice into steam at 108 degree is in following steps
1) First we need to convert the ice into 0 degree C then it has to convert into water at 0 degree C
so we have
2)Now water at 0 degree C is to be converted into water at 100 degree C
3) Now water at 100 degree C is to be converted into steam and then raise the temperature from 100 degree C to 108 degree C
now we have
Now total heat required to raise the temperature of ice is given as
Answer:
It's mechanical energy.
Explanation:
Potential and kinetic energies have to do with an objects movement or potential to move, or mechanics.
Answer:
Req = 50 Ω
Explanation:
The equivalent resistance is basically the sum of all the resistances in a circuit.
The sum of these resistances will depend whether these resistance are in series or parallel.
If the resistances are on series, the expression to use is:
R = R₁ + R₂ + R₃ + .......Rₙ (1)
If the resistances are on parallel then the expression to use is:
1/R = 1/R₁ + 1/R₂ + ........1/Rₙ (2)
Now, according to the picture, we have R₁ and R₄ in series, so here we have to use (1):
R₁₄ = 10 + 30 = 40 Ω
R₂ and R₃ are in parallel so we use (2):
1/R₂₃ = 1/20 + 1/20 = 2/20 = 1/10
R₂₃ = 10 Ω
Finally, R₁₄ and R₂₃ are in series (Because of the sum of the resistance in each side, they are now forming one resistance in each side), therefore, we use (1) again to get the equivalent resistance of the whole circuit:
Req = 10 + 40
<h2>
Req = 50 Ω</h2>
Hope this helps
