Answer:
  
Explanation:
given data 
types of drinking straws
- square cross-sectional shape
 - round shape 
 
solution
we know that both perimeter of the cross section are equal
so we can say that 
perimeter of square  = perimeter of circle   
4 × S = π × D 
here S is length and D is diameter 
S = 
        ....................1
and 
ratio of  flow rate through the square and circle is here 
  
  
   
   
  
 
        
             
        
        
        
Answer: valving the pump discharge to reduce the flow will only result in an increase in the water velocity according to the laws of continuity of flow. 
Q = AV = constant. 
The pump speed of 150 gpm is, and will remain constant. Valving simply reduces flow area A, which is balanced out by increased velocity V of water through the pipe. 
This does not affect the pump speed Q (flow rate) and hence it remains the same. 
 
        
             
        
        
        
Answer:
a) The rate of heat transfer will be 19.58 Watts.
b) The temperature drop of the hot water will be 0.024 Degree Celcius.
Explanation:
 
        
             
        
        
        
The x-ray beam's penetrating power is regulated by kVp (beam quality). Every time an exposure is conducted, the x-rays need to be powerful (enough) to sufficiently penetrate through the target area.
<h3>How does kVp impact the exposure to digital receptors?</h3>
The radiation's penetration power and exposure to the image receptor both increase as the kVp value is raised.
<h3>Exposure to the image receptor is enhanced with an increase in kVp, right?</h3>
Due to an increase in photon quantity and penetrability, exposure at the image receptor rises by a factor of five of the change in kVp, doubling the intensity at the detector with a 15% change in kVp.
To know more about kVp visit:-
brainly.com/question/17095191
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