Answer:
The EMF of each battery is 6 volts and the EMF of two batteries connected in series is 12 volts.
Explanation:
According to the Kirchhoff's Voltage Law, net voltage of a closed circuit must be zero. That is:
(1)
Where 
is the voltage of the i-th component of the closed circuit, measured in volts. Please notice that voltage for a power generating element (i.e. EMF) is less than zero and for a power consuming element is greater than zero (i.e. Batteries being charged by the EMF). In addition, if n-elements are connected in series, then the equivalent voltage is:
(2)
Let consider that closed system is formed by two batteries connected in series and an EMF, by (1) and (2) we have that:
(3)
If we know that 
, then the EMF of the battery is:
The EMF of each battery is 6 volts and the EMF of two batteries connected in series is 12 volts.
Answer:
A trench forms in an underwater subduction zone, often near continental boundaries.
Explanation:
Trenches are often found close to continents because of the subduction boundaries in which a plate made of oceanic crust slides underneath a less dense plate made of continental crust. The downward movement of the denser oceanic plate causes the formation of a deep underwater chasm. It is important to note that near divergent oceanic plate boundaries, the separating plates form an underwater ridge, not a trench.
"Area 2: a layer of haze forms near the ground and affects human health" is the one area among the following choices given in the question that is affected by smog. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helped you.
Answer:
Alaska is called as mid night sun because of it's position in Arctic Circle,latitude 66°33' north.
Explanation:
- When the sun is located above the horizon for a full 24 hours,it is called as summer solstice and when it is located below the the horizon for a full 24 hours, it is called winter Solstice.
- In Alaska, sun travels at 360° direction in the sky thus Alaska receives 24 hour of light during summer time.
