Go to slader.com and type in the full name of the text book and page number. It should have the andwers
        
             
        
        
        
Answer:
6 significant figure
Explanation:
The digits 111328 all are 6 figures with no figure being zero, neither zero after the other digits. In this case, all the numbers are significant and since they are only six numbers, then this is a six significant figure. In case we add another zero after digit 8, the zero is not significant but if added either infront of 8 or 2, the zero becomes significant.
 
        
             
        
        
        
Answer:

Explanation:
When heat energy is supplied to an object, the temperature of the object increases according to the equation:

where
Q is the heat supplied
C is the heat capacity of the object
 is the change in temperature
 is the change in temperature
In this problem we have:
 is the energy supplied
 is the energy supplied
 is the change in temperature of the object
 is the change in temperature of the object
Therefore, the heat capacity of the object is:

 
        
             
        
        
        
It is because that is how mirrors work, they reflect light, and since we see objects because we are seeing the light these objects reflect, what is reflected back by the mirror is what we see.