Answer:
I cannot do the laws of physics cuz I hate science but I'm just dance
Explanation:
<u>it's</u><u> it's true</u>
 
        
             
        
        
        
Explanation:
The given data is as follows.
           Mass, m = 75 g
          Velocity, v = 600 m/s
As no external force is acting on the system in the horizontal line of motion. So, the equation will be as follows.
            
 
where,   = mass of the projectile
 = mass of the projectile 
              = mass of block
 = mass of block
               v = velocity after the impact
Now, putting the given values into the above formula as follows.
                
 
          ![75(10^{-3}) \times 600 = [(75 \times 10^{-3}) + 50] \times v](https://tex.z-dn.net/?f=75%2810%5E%7B-3%7D%29%20%5Ctimes%20600%20%3D%20%5B%2875%20%5Ctimes%2010%5E%7B-3%7D%29%20%2B%2050%5D%20%5Ctimes%20v)
                                   = 
                               v = 0.898 m/s
Now, equation for energy is as follows.
                E = 
                   = 
                   = 13500 J
Now, energy after the impact will be as follows.
              E' = ^{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%5B75%20%5Ctimes%2010%5E%7B-3%7D%20%2B%2050%5D%280.9%29%5E%7B2%7D)
                  = 20.19 J
Therefore, energy lost will be calculated as follows.
             = E  E'
 = E  E'
                        = (13500 - 20) J
                        = 13480 J
And,   n = 
              = 
              = 99.85
              = 99.9%
Thus, we can conclude that percentage n of the original system energy E is 99.9%.
 
        
                    
             
        
        
        
Answer:
60 N
Explanation:
because when we double the 30N, we will get 60N as a force
 
        
             
        
        
        
is the horse running/moving? if so then kinetic i believe 
 
        
             
        
        
        
Answer:
Explanation:
Unknown fork frequency is either 
335 + 5.3 = 340.3 Hz
or
335 - 5.3 = 329.7 Hz
After we modify the known fork, the unknown fork frequency equation becomes either 
(335 - x) + 8 = 340.3
(335 - x)  = 332.3
x = 2.7 Hz
or
(335 - x) + 8 = 329.7
(335 - x) = 321.7
x = 13.3 Hz
IF the unknown fork frequency was 340.3 Hz,
THEN the 335 Hz fork was detuned to 335 - 2.7 = 332.3 Hz
IF the unknown fork frequency was 329.7 Hz, 
THEN the 335 Hz fork was detuned to 335 - 13.3 = 321.7 Hz