It 45 because it has to be this and that and ur gay 
 
        
             
        
        
        
You should select Choice-4 .
 
        
             
        
        
        
As the water russhes toward the shore, it rises because it is pushing against it.<span />
        
             
        
        
        
Answer:
The right wall surface temperature and heat flux through the wall is 35.5°C and 202.3W/m²
Explanation:
Thickness of the wall is  L=  20cm = 0.2m
Thermal conductivity of the wall is  K = 2.79 W/m·K
Temperature at the left side surface is T₁ =  50°C
Temperature of the air is T = 22°C
Convection heat transfer coefficient is  h = 15 W/m2·K
Heat conduction process through wall is equal to the heat convection process so

Expression for the heat conduction process is

Expression for the heat convection process is

Substitute the expressions of conduction and convection in equation above


Substitute the values in above equation

Now heat flux through the wall can be calculated as

Thus, the right wall surface temperature and heat flux through the wall is 35.5°C and 202.3W/m²
 
        
             
        
        
        
Answer: 1010.92 m/s
Explanation:
According to Newton's law of universal gravitation:
 (1)
 (1)
Where:
 is the gravitational force between Earth and Moon
 is the gravitational force between Earth and Moon
 is the Gravitational Constant
 is the Gravitational Constant  
 is the mass of the Earth
 is the mass of the Earth
 is the mass of the Moon
 is the mass of the Moon
 is the distance between the Earth and Moon
 is the distance between the Earth and Moon
Asuming the orbit of the Moon around the Earth is a circular orbit, the Earth exerts a centripetal force on the moon, which is equal to  :
:
 (2)
 (2)
Where  is the centripetal acceleration given by:
 is the centripetal acceleration given by:
 (3)
 (3)  
Being  the orbital velocity of the moon
 the orbital velocity of the moon
Making (1)=(2):
 (4)
 (4)
Simplifying:
 (5)
 (5)
Making (5)=(3):
 (6)
 (6)  
Finding  :
:
 (7)
 (7)
 (8)
 (8)
Finally:
