Answer:
c. may be accompanied by the sound of explosively expanding hot air, called thunder. 
Explanation:
Lightning is a discharge which is due to the reaction between oppositely charged charges in the clouds, or between clouds base and the Earth surface.
The motion of the cloud causes charging of clouds by friction, thus the reaction between opposite charges (jumping of charges from one cloud to another) in the cloud can lead to lightning. Also, oftentimes the bottom of a cloud is negatively charged so that this is attracted to the positive charge on the earth surface. Thus leading to a discharge called lightning.
Thus in the given question, the appropriate option is C. This implies that, lightning may be accompanied by the sound of explosively expanding hot air, called thunder. 
 
        
             
        
        
        
Answer:
350 F to 100 F it take approx 87.33 min  
Explanation:
given data 
oven = 350◦F
cooling rack = 70◦F
time = 30 min 
cake = 200◦F
solution
we apply here Newtons law of cooling  
 = -k(T-Ta)
 = -k(T-Ta)
 =
 =  (T(t) -Ta)
 (T(t) -Ta) 
=  = -k(T-Ta)
 = -k(T-Ta)
-ky  = -ky
 = -ky
T(t) -Ta = (To -Ta)  T(t) = Ta+ (To -Ta)
 T(t) = Ta+ (To -Ta)   
 
put her value for time 30 min and T(t) = 200◦F and To =350◦F  and Ta = 70◦F
so here 
200 = 70 + ( 350 - 70 ) 
k = 0.025575 
so here for  T(t) = 100F 
100 = 70 + ( 350 - 70 ) 
time = 87.33 min 
so here 350 F to 100 F it take approx 87.33 min  
 
        
             
        
        
        
Answer:
its a solid but can flow
Explanation:
those answers to choose from are wrong
 
        
             
        
        
        
Answer:
C 
Explanation:
A white shirt really reflects light
 
        
                    
             
        
        
        
Answer:
that is going at a constant rate 
Explanation: