A centimeter cannot measure mass because mass is measured by grams. 
Answer: Centimeter 
        
                    
             
        
        
        
Answer:
The  electrons are moving through the superconductor per second.
 electrons are moving through the superconductor per second.
Explanation:
Given : 
Current  A
 A
Charge of electron  C
 C
Time  sec
 sec
From the formula of current,
Current is the number of charges flowing per unit time.
    
Where  number of charges means in our case number of electrons
 number of charges means in our case number of electrons
    
    
    
Therefore,  electrons are moving through the superconductor per second.
 electrons are moving through the superconductor per second.
 
        
             
        
        
        
Answer:
d = 68.5 x 10⁻⁶ m = 68.5 μm
Explanation:
The complete question is as follows:
An optical engineer needs to ensure that the bright fringes from a double-slit are 15.7 mm apart on a detector that is  1.70m from the slits. If the slits are illuminated with coherent light of wavelength 633 nm, how far apart should the slits be?
The answer can be given by using the formula derived from Young's Double Slit Experiment:

where,
d = slit separation = ?
λ = wavelength = 633 nm = 6.33 x 10⁻⁷ m
L = distance from screen (detector) = 1.7 m
y = distance between bright fringes = 15.7 mm = 0.0157 m
Therefore,

<u>d = 68.5 x 10⁻⁶ m = 68.5 μm</u>
 
        
             
        
        
        
The formula we use
here is:
radial acceleration =
ω^2 * R <span>
110,000 * 9.81 m/s^2 = ω^2 * 0.073 m 
<span>ω^2 = 110,000 * 9.81 / 0.073
ω = 3844.76 rad/s </span></span>
<span>and since: ω = 2pi*f  --> f = ω/(2pi)</span><span> 
f = 3844.76 / (2pi) = 611.91 rps = 611.91 * 60 rpm 
<span>= 36,714.77 rpm </span></span>