Answer:
Explanation:
Ah is a unit of charge .
A battery with 12 V and charge capacity of 40 Ah will have energy content
= volt x charge
volt = 12 V
Charge = 40 Ah
= 40 x 60 x 60 A.s
= 144000 coulomb
energy content = 12 x 144000
= 1728000 J
energy content of heavy duty battery
= 12 x 60 x 60 x 60
= 2592000 J
Ratio = 1728000 / 2592000
= 2 / 3
Current can not be compared as current depends upon the resistance of appliance used . As resistance of appliance is unknown , current can not be compared.
Neither do.beacuse diffusion occurs due the random movement a substance's particals move from a higher concentration to a lower concentration down the concentration gradient.On the other hand osmosis is the movement of water molecules from a high water potential to a low water potential through a partially permeable membrane.thus no energy is required for them to do so.Active transport is a process that requires energy.
Answer:
P = 6.63 kW
Explanation:
Given that,
Current, I = 260 A
Voltage of the battery, V = 25.5 V
We need to find the power supplied to the starter motor. We know that,
P = VI
Put all the values,
P = 25.5 × 260
P = 6630 W
or
P = 6.63 kW
So, the power supplied to the motor is 6.63 kW.
Answer:
The coordinates of the point is (0,0.55).
Explanation:
Given that,
First charge 
at origin
Second charge 
Second charge at point P = (0,1)
We assume that,
The net electric field between the charges is zero at mid point.
Using formula of electric field
Hence, The coordinates of the point is (0,0.55).
Answer:
both magnesium and strontium have 2 valence electrons
Explanation:
potassium has 8 valence electrons, and nitrogen has 5.
