W = ∫ (x from 0.1 to +oo) F dx 
= ∫ (x from 0.1 to +oo) A e^(-kx) dx 
= A/k x [ - e^(-kx) ](between 0.1 and +oo) 
= A/k x [ 0 + e^(-k * 0.1) ] 
<span>
= A/k x e^(-k/10) </span>
        
             
        
        
        
Answer:
Explanation:
Let the volume of air be V. at atmospheric pressure, that is 10⁵  Pa
At 20 m below surface pressure will be 
atmospheric pressure + hdg
10⁵ + 20 x 9.8 x 1000 = 2.96 x 10⁵Pa
At this pressure volume V becomes V/ 2.96  
This volume will last 1/2.96 times  time that is 60/2.96 = 20.27 minutes.
 
        
             
        
        
        
As the temperature increases the kinetic energy of the molecules increases, if u add more heat you get more kinetic energy.
 
        
             
        
        
        
If the applied force is in the same direction as the object's displacement, the work done on the object is:
W = Fd
W = work, F = force, d = displacement
Given values:
F = 45N
d = 12m
Plug in and solve for W:
W = 45(12)
W = 540J