66666666666666666666666666666666666666666666666666666666666666666666666666666666666666
        
             
        
        
        
Explanation:
<h2><u>Steps </u><u>:</u></h2>
- <u>Move </u><u>decimal</u><u> </u><u>from</u><u> </u><u>left </u><u>to </u><u>right</u><u> </u><u>=</u><u>0</u><u> </u><u>0</u><u>0</u><u>0</u><u>0</u><u>0</u><u>0</u><u>2</u><u>4</u><u>0</u><u>.</u><u>0</u>
- <u>Then </u><u>count </u><u>the</u><u> </u><u>numbers</u><u> </u><u>before</u><u> </u><u>decimal </u><u>and </u><u>w</u><u>rite </u><u>it </u><u>like</u><u> </u><u>this </u><u>=</u><u>2</u><u>4</u><u>0</u><u>.</u><u>0</u><u>x</u><u>1</u><u>0</u><u> </u><u>power-</u><u>9</u><u> </u>
- <u>That's</u><u> </u><u>all </u>
<u>hope</u><u> it</u><u> </u><u>help</u>
<h2><u>#</u><u>H</u><u>o</u><u>p</u><u>e</u></h2>
 
        
             
        
        
        
Answer
given,
length of bar = 80 cm
mass of the bar = 10 kg 
smaller mass = 4 kg
distance = 20 cm


taking moment about B






difference between two scale = 8 - 6
                                                   = 2 N
 
        
             
        
        
        
In order to solve this problem, we must first find out the value of each line on the number line. However, we can make this problem more simple by ignoring every interval except for the ones between 0 and 6. There are three total intervals in between 0 and 6 (including 6 and excluding 0). Therefore, we can do 6/2, and get an interval value of 2. This means that each line adds a value of 2. Since the car is only one line past zero, we only have to add one value of 2. Since 0 + 2 = 2, our final answer is C. 2.
Hope this helps!
        
                    
             
        
        
        
All that business about the crane and the rope and the falling 
is only there to confuse us.
The piano ended up 5 meters above the ground.
           Potential energy = (mass) (gravity) (height)
                                   = (200 kg) (9.81 m/s²) (5 m)
                                   = (200 · 9.81 · 5)  (kg-m²/s²)
                                   =   9,810 joules   .