-- the big flash of light and heat coming out of the head 
of a match when it gets hot enough;
-- the explosion of a tiny bit of gunpowder that can send 
a bullet many miles;
-- the energy captured from a few drops of burning gasoline 
that moves a car; 
-- the energy in the carbohydrates you eat that is used 
to move you around;
        
             
        
        
        
Assuming it is on a horizontal surface:
friction = μR
R = 20g (g is gravity 9.81)
so Friction = 0.085 x 20g
Work done is force x distance 
so Work done = 0.085 x 20g x 28
 = 466.956 J
        
             
        
        
        
The answer is B, or endoplasmic reticulum.
        
                    
             
        
        
        
Answer:

Explanation:
given,
J = 50 kg-m² 
frequency, f = 20 Hz
time ,t = 5 s
we know,
angular velocity = 2 π f
 ω = 2 π x 20
 ω = 125.66 rad/s
 now, angular acceleration calculation
 
 
    α = 25.13 rad/s²
Torque given to the flywheel.
     
     
     
Torque of the given  flywheel is equal to 