Answer:
Part A: 
Part B:
Part C: 
Explanation:
Part A:
We will use the following kinematics equation:
Part B:
We will use the same kinematics equation:
Part C:
The total time takes is 2t.
So the train moves a distance of
And the car moves a distance in Part A and in Part B:
So the total distance that the car traveled is 
The difference between the train and the car is
Answer:
From the First Law of Motion
Vf = Vi + at
"It reaches a speed of 52m/s" meaning the Final speed Vf=52
a(acceleration)=10m/s²
t=4s
Applying the formula
52=Vi + 10(4)
Vi = 52-40
Vi = 12m/s
Moles x Mol mass = mass.
<span>Having looked it up, the mol.mass of U-238 is 238.03g/mol. </span>
<span>7.50 moles x 238.03g/mol. = 1,785.23g/mol</span>
Answer:
Explanation:
Using Snell's law
n₁ sinθ₁ = n₂ sinθ₂
for 420 nm wavelength
where n₁ = 1.00 ( refractive index of air) and θ₁ = 30° n₂ = 1.660
1.00 × sin 30° = 1.660 sinθ₂
sinθ₂ = 0.3012
θ₂ = sin⁻¹ 0.3012 = 17.53°
for 690 nm wavelength
n₁ sinθ₁ = n₂ sinθ₂
sinθ₂ = 0.5 / 1.630
θ₂ = sin⁻¹ 0.3067 = 17.86°
the angle between the two beam = 17.863° - 17.53° = 0.333°
