Answer:
speed of golf ball is 1.15 ×  m/s
 m/s
and % of uncertainty in speed =  2.07 ×  %
 %
Explanation:
given data 
mass = 45.9 gram = 0.0459 kg
speed = 200 km/hr = 55.5 m/s
uncertainty position Δx = 1 mm =  m
 m
to find out
speed of the golf ball and  % of speed of the golf ball
solution
we will apply here heisenberg uncertainty principle that is 
uncertainty position ×uncertainty momentum ≥  ......1
    ......1
 Δx × ΔPx  ≥  
 
here uncertainty momentum ΔPx = mΔVx 
and uncertainty velocity = ΔVx 
and h = 6.626 ×  Js
 Js
so put here all these value in equation 1 
 × 0.0459 × ΔVx =
 × 0.0459 × ΔVx =  
ΔVx = 1.15 ×  m/s
 m/s
and
so % of uncertainty in speed = ΔV / m 
% of uncertainty in speed =  1.15 ×  / 55.5
  / 55.5
% of uncertainty in speed =  2.07 ×  %
 %
 
        
             
        
        
        
Applicable linear expansion equation:
ΔL = αΔTL
In which
ΔL = change in length, α = Linear expansion coefficient of steel, ΔT = change in temperature, L = original length
Therefore,
ΔL = 12*10^-6*(18.5-(-3))*1410 = 0.36378 m
        
             
        
        
        
answer:
an opaque object is one that doesn't let light pass through it. instead, it reflects or absorbs the light that strikes it.
explanation:
in this case, we see the material because of the transmitted light. therefore, the wavelength of the transmitted light determines the color that the object appears.
 good luck :)
i hope this helps
have a nice day !!
 
        
                    
             
        
        
        
Answer:
Their densities are different as well
Explanation:
Density is worked out by dividing mass by volume. If the mass was the same then the densities would be as well. But it's not.
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