Explanation:
The heart rate of the astronaut is 78.5 beats per minute, which means that the time between heart beats is 0.0127 min. This will be the time t measured by the moving observer. The time t' measured by the stationary Earth-based observer is given by

a) If the astronaut is moving at 0.480c, the time t' is


This means that time between his heart beats as measured by Earth-based observer is 0.0145 min, which is equivalent to 69.1 beats per minute.
b) At v = 0.940c, the time t' is


So at this speed, the astronaut's heart rate is 1/(0.0372 min) or 26.9 beats per minute.
 
        
             
        
        
        
Units such as kilograms (about 2.2 pounds)n which are a thousand grams,grams,centigrams (hundredths of grams), and milligrams (thousands of grams).
        
             
        
        
        
Today, the House Democratic caucus is composed mostly of progressives<span> and </span>centrists,<span> with a smaller minority of </span>conservative Democrats<span>. The party's philosophy of </span>modern liberalism<span> advocates </span>social<span> and </span>economic equality<span>, along with the </span>welfare state.<span> It seeks to provide government intervention and regulation in the economy.</span>
        
             
        
        
        
Explanation:
0.566kg *(1mol/0.197 kg)= 2.87 mol gold
note how the units cancel out, if the units do not cancel out (kg/kg=1) then u did something wrong