Answer:
Force, F = 20240 N
Explanation:
It is given that,
Pressure exerted by the four tires of an automobile, 
Area of each tire, 
Area of 4 tires,  
We know that the pressure exerted by an object is equal to the force per unit area. Its formula is given by :



F = 20240 N
So, the weight of the automobile is 20240 N. Hence, this is the required solution.
 
        
             
        
        
        
Do you remember this formula for the distance traveled while accelerated ?
<u>Distance = (initial speed) x (t)  plus  (1/2) x (acceleration) x (t²)</u>
I think this is exactly what we need for this problem.
initial speed = 20 m/s down
acceleration = 9.81 m/s² down
t = 3.0 seconds
Distance down = (20) x (3)  plus  (1/2) x (9.81) x (3)²
Distance = (60)  plus  (4.905) x (9)
Distance = (60)  plus  (44.145)  =  104.145 meters
Choice  <em>D)</em>  is the closest one.
        
             
        
        
        
Answer:
X and Z
Explanation:
Conduction occurs through direct physical contact.  Heat transferred from the pot to the handle, and from the handle to the hand, are both examples of conduction.
 
        
                    
             
        
        
        
Answer:
10 watts 
Explanation:
first calculate work.
Work =force×distance cos thita
10Kg×0.50M cos 0= 5joules
Therefore, Power=Work÷ Time 
Therefore, 5joules÷0.50s=10 watts.
 
        
             
        
        
        
Potential Energy=M x G x  H
1,568=40 x 10 x H 
Now we isolate the H 
h=3.92m