Weathering is where something is changed or mutilated by the weather. Erosion is hwere water or an other substance digs awaya at something and wears it out. I don't exactly know the last one or how to explain
        
                    
             
        
        
        
Answer:
 
=118.8 K= 154.2°C
Explanation:
COP_max of carnot heat pump= 
where T_H and T_C are temperatures of hot and cold reservoirs
Also COP=
in the question 
⇒
heat is added directly to be as efficient as via heat pump 
 
and T_H= 24° C= 297 K

on calculating the above equation we get 
=118.8 K
the outdoor temperature for efficient addition of heat to interior of home 
 
=118.8 K= 154.2°C
 
        
             
        
        
        
Answer:
velocity  = 472 m/s
velocity = 52.4 m/s
Explanation:
given data 
steady rate = 0.750 m³/s
diameter = 4.50 cm
solution
we use here flow rate formula that is 
flow rate = Area × velocity .............1
0.750 = 
 × (4.50×
)²  × velocity 
solve it we get 
velocity  = 472 m/s
and 
when it 3 time diameter
put valuer in equation 1 
0.750 = 
 × 3 ×  (4.50×
)²  × velocity 
velocity = 52.4 m/s
 
        
             
        
        
        
Questions Diagram is attached below
Answer:

Explanation:
From the question we are told that:
Speed of Train 
Angle 
Height of window 
Width of window 
The Horizontal distance between B and A from Trigonometric Laws is mathematically given by
  
  
Therefore
Distance from A-A
  
  
Therefore 
Time Required to travel trough d is mathematically given as
  
  
  