Answer:
decreases
Explanation:
Remeber:
There is always inverse relation between frequency and wavelength.
So if one of them increases, other decreases and vice-versa.
f ∝ 1 / λ
 
        
                    
             
        
        
        
Answer:
b. negative
Explanation:
neutrons have a negative charge and protons have a proton has a positive charge 
 
        
                    
             
        
        
        
Answer:
D. Banks and offices closing on sunday.
Explanation:
Church is usually on sunday and people need a day off to do it because service is about 3 hours long. When banks and offices close on this day it shows how religion has affected our lives and our culture.
 
        
             
        
        
        
The North America will not be able to view the eclipse because of its location on the earth caused by the tilting of the earth.
<h3>
Effect of tilting of the Earth</h3>
The tilt of the Earth is what causes seasons to occur. These are the seasons in relation to the Northern Hemisphere. 
The tilting of the Earth causes the difference in the amount of sun reaching each region of the earth like in the North America continent.
Thus, the North America will not be able to view the eclipse because of its location on the earth caused by the tilting of the earth.
Learn more about eclipse here: brainly.com/question/8643
#SPJ1
 
        
             
        
        
        
Answer:
    μ = 0.37
Explanation:
For this exercise we must use the translational and rotational equilibrium equations.
We set our reference system at the highest point of the ladder where it touches the vertical wall. We assume that counterclockwise rotation is positive
let's write the rotational equilibrium
            W₁  x/2 + W₂ x₂ - fr y = 0
where W₁ is the weight of the mass ladder m₁ = 30kg, W₂ is the weight of the man 700 N, let's use trigonometry to find the distances
              cos 60 = x / L
where L is the length of the ladder
               x = L cos 60
             sin 60 = y / L
            y = L sin60
 the horizontal distance of man is
             cos 60 = x2 / 7.0
             x2 = 7 cos 60
we substitute
          m₁ g L cos 60/2 + W₂ 7 cos 60 - fr L sin60 = 0
          fr = (m1 g L cos 60/2 + W2 7 cos 60) / L sin 60
let's calculate
          fr = (30 9.8 10 cos 60 2 + 700 7 cos 60) / (10 sin 60)
          fr = (735 + 2450) / 8.66
          fr = 367.78 N
the friction force has the expression
          fr = μ N
write the translational equilibrium equation
          N - W₁ -W₂ = 0
          N = m₁ g + W₂
          N = 30 9.8 + 700
          N = 994 N
we clear the friction force from the eucacion
         μ = fr / N
         μ = 367.78 / 994
         μ = 0.37