Answer:
0.73 W/m²
0.2522 W/m²
Explanation:
= Unpolarized light = 1.46 W/m²
= Analyzer angle = 54°
Light through first filter
The intensity of the light leaving the polarizer is 0.73 W/m²
After passing through analyzer
The intensity of the light that reaches the photocell is 0.2522 W/m²
Answer:
42.11 sec
Explanation:
In first part : The truck start from the rest that is u = 0 m/sec
Acceleration is given as 
It reaches to a velocity of 22 m/sec so v=22 m/sec
Now according to first law of motion 
In second part : The truck maintain a constant speed for 22 sec
In third part : The truck takes an additional 4.4 sec for stopping
So total time in which the truck is in motion =15.71+22+4.4=42.11 sec
Answer:
4.25 mm
Explanation:
σ = E ∙ ∆L/L₀
where σ is stress,
E is Young's modulus,
and ∆L/L₀ is strain (∆L is the deflection, L₀ is the initial length).
Plugging in values:
1.53×10⁸ Pa = (1.8×10¹⁰ Pa) ∆L / (500 mm)
∆L = 4.25 mm
Answer:
v² = u² + 2x²
Explanation:
v² = u² + 2as is only valid for constant acceleration. Here, the acceleration is a function of position. We can find the function of velocity by integrating. Acceleration is the derivative of velocity with respect to time:
a = 2x
dv/dt = 2x
Apply chain rule:
dv/dt = dx/dt × dv/dx
dv/dt = v × dv/dx
Therefore:
v dv/dx = 2x
Separate the variables and integrate:
v dv = 2x dx
½ v² |ᵤᵛ = x² |₀ˣ
½ (v² − u²) = x²
v² − u² = 2x²
v² = u² + 2x²
