<span>The last main subatomic particle to be discovered was the
antihelium-4.  It was discovered on 2011
and it is measured and produces through the STAR detector.  The Antihelium-4 was discovered accidentally
when an experiment was conducted.  It is
also the first particle that was discovered by the means of experiment.</span>
 
        
             
        
        
        
Answer:

Explanation:
Assuming that cars 4 and 5 have same mass so that the momentum  
P=mv where m is mass and v is velocity hence
Momentum=0+2mv+3mv=5mv
The final mass is 2m+3m=5m
From aw of conservation of momentum
 hence
 hence 
Therefore, the speed is 
 
        
             
        
        
        
False, that does not apply to some
        
             
        
        
        
Answer:
The force of gravity is not the same as being on the earth. when your on the earth there no gravitational pull its all up to the air 
Explanation:
No explanation 
 
        
             
        
        
        
Answer:
The ratio of the resistances of second coil to the first coil is the ratio of square of radius of the first coil to the square of radius of  second coil. 
And 
The ratio of the resistances of fourth coil to the third coil is the ratio of square of radius of the third coil to the square of radius of  fourth coil. 
Explanation:
The resistance of the coil is directly proportional to the length of the coil and inversely proportional to the area of coil and hence inversely proportional to the square of radius of the coil. 
So, the ratio of the resistances of second coil to the first coil is the ratio of square of radius of the first coil to the square of radius of  second coil. 
And 
The ratio of the resistances of fourth coil to the third coil is the ratio of square of radius of the third coil to the square of radius of  fourth coil.