Answer:
92 protons
Explanation:
The mass number is 
238
, so the nucleus has  <u>238  particles</u> in total, including <u>146 neutrons</u>.  So to calculate the number of neutrons we have to subtract:  238  −  146  =  92
 
        
                    
             
        
        
        
Explanation:
the object has constant velocity for 2 seconds and it get a constant accelration (2ms-2)
 
        
             
        
        
        
Answer:
± (.021 ) ohm
Explanation:
In the addition of two physical quantities , the uncertainties are simply added .
So , net uncertainty in the value of R will be 
± (.007 +.014)
=± (.021 ) ohm