Answer:
60 rad/s
Explanation:
∑τ = Iα
Fr = Iα
For a solid disc, I = ½ mr².
Fr = ½ mr² α
α = 2F / (mr)
α = 2 (20 N) / (0.25 kg × 0.30 m)
α = 533.33 rad/s²
The arc length is 1 m, so the angle is:
s = rθ
1 m = 0.30 m θ
θ = 3.33 rad
Use constant acceleration equation to find ω.
ω² = ω₀² + 2αΔθ
ω² = (0 rad/s)² + 2 (533.33 rad/s²) (3.33 rad)
ω = 59.6 rad/s
Rounding to one significant figure, the angular velocity is 60 rad/s.
 
        
             
        
        
        
If any current is PRODUCED in an individual home, like with 
a windmill or solar panels, it is direct current (DC).
The current SUPPLIED to homes by the local utility company 
is alternating current (AC).
        
                    
             
        
        
        
Explanation:
(a)   Formula to calculate the density is as follows.
             
                        = 
                      = 
Now, calculate the charge as follows.
             
                       = 
                       =  C
 C
or,                   = 101.06 nC
(b)  For r = 6.50 cm, the value of charge will be calculated as follows.
                 
                           = 
                           = 7.454 
 
        
             
        
        
        
Answer:force equals to rate of change of momentum 
Explanation:
F=force
t=time
m=mass
v=final velocity 
u=initial velocity 
(mv-mu)/t=rate of change of momentum 
Force=rate of change of momentum 
F=(mv-mu)/t
 
        
                    
             
        
        
        
Answer:
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.
and/or
Kinematics is the study of motion of a system of bodies without directly considering the forces or potential fields affecting the motion. In other words, kinematics examines how the momentum and energy are shared among interacting bodies.