Answer:
0.25m
Explanation:
Using the expression that relates the angular velocity(w) and the linear velocity (v).
v= wr where;
w is the angular speed= 128rad/s
v is the linear speed = 32m/s
r is the radius
r = v/w
r = 32/128
r = 0.25m
The radius of the blade is 0.25m
Answer:
θ = 68.9º
Explanation:
The equation that governs the process of light passing through a polarizer is described by Malus's law
I = I₀ cos² θ
Where I is the transmitted intensity, I₀ is the incident intensity and TE is the angle between the light and the polarizer
If i is 0.13I₀, we substitute in the equation
0.13 Io = I₀ cos² θ
Cos² θ = 0.13
Cos θ = √ 0.13
θ = cos⁻¹ (0.36056)
θ = 68.9º
A). time taken =(2 * V * sin theta)/ g = 3.061 seconds.
b). Range = (v^2 * sin 2 theta)/g = 10.53 meters
For conservation of energy we have to:
mgH=mv²/2
Clearing
<span> v=sqrt(2gH)
Then, by definition
</span><span> F=Δp/Δt= Δ(mv)/ Δt=m Δ(v)/Δt=
</span> =m[sqrt(2gH)-0]/Δt= m[sqrt(2gH)]/ Δt
the answer is
F=m[sqrt(2gH)]/ Δt
If you dont open the freezer everything will stay contained and frozen.