Answer:
b. 1.1 m
Explanation:
It is given that the total distance between the masses is equal to the length of the board, which is 3 m. Therefore,

where,
s₁ = distance of fulcrum from left mass 
s₂ = distance of fulcrum from right mass 
In order to achieve balance, the torque due to both masses must be equal:

s₁ = 1.1 m
Hence, the correct option is:
<u>b. 1.1 m</u>
 
        
             
        
        
        
Answer:
2.03 x 10²⁴N
Explanation:
Given parameters: 
Mass of moon = 7.34 x 10²²kg
Mass of the earth  = 5.97 x 10²⁴kg 
Distance  = 3.8 x 10⁵km
Unknown: 
Gravitational force of attraction  = ? 
Solution:
To find the gravitational force of attraction between the masses, we use the expression below;
    F =  
 
G is the universal gravitation constant
m is the mass 
1 and 2 represents moon and earth
r is  the distance
   F =  
 
  F =  = 2.03 x 10²⁴N
  = 2.03 x 10²⁴N
 
        
             
        
        
        
Answer:
biopsychlogy
Explanation:https://www.answers.com/Q/Which_perspective_is_most_directly_involved_with_the_study_of_how_brain_development_might_affect_behavior
 
        
             
        
        
        
A ) decrease.
B ) increase.
C ) increase, then decrease.
D ) not change.
The answer is A) decrease
Take pushing a box, for example-- You  push your hardest then give out, still trying to push the box. You are doing less work than what you have started with!
( Mind marking me for branliest? ; ) )