Answer:
 F = 3.6 kN, direction is 9.6º to the North - East
Explanation:
The force is a vector, so one method to find the solution is to work with the components of the vector as scalars and then construct the resulting vector.
Let's use trigonometry to find the component of the forces, let's use a reference frame where the x-axis coincides with the East and the y-axis coincides with the North.
Wind
X axis
           F₁ = 2.50 kN
Tide
          cos 30 = F₂ₓ / F₂
          sin 30 = F_{2y} / F₂
           F₂ₓ = F₂ cos 30
          F_{2y} = F₂ sin 30
          F₂ₓ = 1.20cos 30 = 1.039 kN
          F_{2y} = 1.20 sin 30 = 0.600 kN
the resultant force is
X axis
         Fₓ = F₁ₓ + F₂ₓ
         Fₓ = 2.50 +1.039
         Fₓ = 3,539 kN
         F_y = F_{2y}
         F_y = 0.600
to find the vector we use the Pythagorean theorem
          F = 
          F = 
          F = 3,589 kN
the address is
          tan θ = F_y / Fₓ
          θ = tan⁻¹  
          θ = tan⁻¹   0.6 / 3.539
0.6 / 3.539
          θ = 9.6º
the resultant force to two significant figures is
          F = 3.6 kN
the direction is 9.6º to the North - East
 
        
             
        
        
        
One way to do it is she could right down the data that she got
        
                    
             
        
        
        
Answer:
total surface area is 432
Explanation:
Given data 
base  = 6
diagonals = 8
altitude = 12
to find out 
total surface area 
solution
we know total surface area of prism is 
total surface area = lateral surface area + 2base area  ..............1
so 
first we calculate base perimeter i.e = 2 length + 2 width
so perimeter = 2(8) + 2(6) = 25
and area  = length * width = 8*6 = 48
so lateral surface area is perimeter * height i.e
lateral surface area = 28* 12 
lateral surface area = 336
put this value in equation 1 we get 
total surface area = lateral surface area + 2base area
total surface area = 336 + 2(48)
total surface area is 432
 
        
                    
             
        
        
        
A. W
Explanation:
The wave that would be produced by the interaction of the two waves shown in the diagram is wave W. 
There is no wave in the diagram W. 
This type of interference is known as destructive interference. 
- Destructive interference occurs when two waves out of phase comes together. 
- In this way, they cancel out each other and are terminated. 
- If the two waves are in phase, they will reinforce one another. 
- When waves reinforce one another, a constructive interference has occurred. 
learn more: 
Color in soap bubbles brainly.com/question/8733443
#learnwithBrainly
 
        
                    
             
        
        
        
It is an example of reflection of wave. C.