C. Different Atoms
Explanation:
Different atoms are made up of different atoms. Atoms are not the same. They differ in a wide range of physical and chemical properties.
- Some atoms looks alike but differs only in the number of their neutrons and are called isotopes
- Atoms are made up of three fundamental particles.
- Protons are the positively charged particles in an atom
- Electrons are the negatively charged particles in an atom
- Neutrons do no carry charges
- Every atom have a unique atomic number which is the number of protons.
- it makes it different from other atoms.
- Different atoms are different from one another because they do not have the same atomic number.
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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: d.Site
Explanation:
Site is the totality of natural and man-made features in a location. On a map, it shows the location in the midst of its surrounding roads, landmarks, or water bodies, otherwise known as its situation. Situation describes the surrounding features of a location.
Gentrification is the process of modifying a neighborhood or district such that it matches a more affluent taste.
Might be B: by combining China's collectives into self-sufficient People's Communes.
