Answer: Cell's nucleus
Explanation :
The full form of DNA is Deoxyribonucleic acid. The genetic information of a cell is organized in the DNA. It is inherited from parents by their children.
DNA is coiled into chromosomes in a cell's nucleus. It has a shape like a double helix. It is twisted in the form of spirals. 
Hence, DNA is coiled into chromosomes in a cell's Nucleus.
 
        
                    
             
        
        
        
Answer:
a
  
b
 
Explanation:
Generally the force of attraction between this two irons is mathematically represented as 
 ![F =  \frac{k *  [Q_{Li}  ] * [Q_{O}  ]  }{ r^2}](https://tex.z-dn.net/?f=F%20%3D%20%20%5Cfrac%7Bk%20%2A%20%20%5BQ_%7BLi%7D%20%20%5D%20%2A%20%5BQ_%7BO%7D%20%20%5D%20%20%7D%7B%20r%5E2%7D)
Here k is known as the proportionality constant with value 
 substituting -2 for  i.e the charge on oxygen , +1 for
 i.e the charge on oxygen , +1 for  i.e the charge on Lithium and
 i.e the charge on Lithium and ![[0.140 + 0.068 ] nm= 0.208 nm =  0.208*10^{-9}](https://tex.z-dn.net/?f=%20%5B0.140%20%2B%200.068%20%5D%20nm%3D%200.208%20nm%20%3D%20%200.208%2A10%5E%7B-9%7D%20%20%20) for r
 for r 
So
 
 
Generally the force of repulsion will be the magnitude but different direction to the force o attraction 
So Force of repulsionn is 
 
 
 
 
 
 
        
             
        
        
        
Explanation:
It is a good idea to start with room temperature water in the calorimeter because the room temperature water helps to determine the heating up/cooling down because of the environment as the experiment takes place. Because the calorimeter heat is the same as the heat of the water.
 
        
                    
             
        
        
        
Complete Question 
How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns.
The output from the secondary coil is  12 V
Answer:
The value  is  
Explanation:
From the equation we are told that 
    The input voltage is  
    The number of turns of the primary coil is 
     The output from the secondary is 
From the transformer equation 
    
Here  is the number of turns in the secondary coil
 is the number of turns in the secondary coil 
=> 
=>
=>
 
        
             
        
        
        
True.
A contact force is a force between two objects that are physically in contact with each other: an example of a contact force is the normal reaction of a table supporting a book.
A non-contact force is a force between two objects that are not physically in contact with each other: an example of non-contact force is the gravitational attraction between the Earth and the Moon.