False i just took the test and put true as a guess but got it wrong so it is false 
please give me a brainlies
        
                    
             
        
        
        
I got B,when you subtract 3/5 from NEGATIVE 2/3 it creates a negative 19 over a positive 15.
        
             
        
        
        
Answer:
B. QC > 0; QH < 0
Explanation:
Given that there are two reservoir of energy.
Sign convention for heat and work :
1.If the heat is adding to the system then it is taken as positive and if heat is going out from the system then it is taken as negative.
2. If the work is done on the system then it is taken as negative and if the work is done by the system then it is taken as positive.
From hot reservoir heat is going out that is why it is taken as negative 

From cold reservoir heat is coming inside the reservoir that is why it is taken as positive

That is why the answer will be 
 ,
 ,
 
        
             
        
        
        
Answer:
 Ф,
Ф,
 Ф
 Ф
Explanation:
Now find the components NxNxN_x and NyNyN_y of N⃗ N→N_vec in the tilted coordinate system of Part B. Express your answer in terms of the length of the vector NNN and the angle θθtheta, with the components separated by a comma.
Vectors are quantities that  have both magnitude and direction while scalar quantities have only magnitude but no direction.
This a vector quantity
from the diagram the horizontal component of the length of the vector will be
 Ф
Ф
the vertical component will be
 Ф
 Ф
this is in the opposite direction because the x can be extrapolated to the negative axis