Answer:
the answers the correct one is d
Explanation:
The speed of sound is constant so we can use the relations of uniform motion
v = x / t
x = v t
now let's calculate the distance for each person
t = 5s
x₁ = 300 5
x₁ = 1500 m
t = 6s
x₂ = 300 6
x₂ = 1800 m
therefore we have two possibilities
a) the two people are on the same side, therefore the distance between them is
Δx = x₂- x₁
Δx = 1800 - 1500
Δx = 300 m
let's reduce to km
Δx = 0.300 km
b) people are on opposite sides of the sound
Δx = x₂ + x₁
Δx = 1800 + 1500
Δx = 3300 m
Δx = 3.3 km
when checking the answers the correct one is d
B) lever and pulley is the answer
To protect the constitutional right to confront ones accused
Answer:
Angle θ = 30.82°
Explanation:
From Malus’s law, since the intensity of a wave is proportional to its amplitude squared, the intensity I of the transmitted wave is related to the incident wave by; I = I_o cos²θ
where;
I_o is the intensity of the polarized wave before passing through the filter.
In this question,
I is 0.708 W/m²
While I_o is 0.960 W/m²
Thus, plugging in these values into the equation, we have;
0.708 W/m² = 0.960 W/m² •cos²θ
Thus, cos²θ = 0.708 W/m²/0.960 W/m²
cos²θ = 0.7375
Cos θ = √0.7375
Cos θ = 0.8588
θ = Cos^(-1)0.8588
θ = 30.82°
Answer:
Relative age-dating involves comparing a rock layer or rock structure with other near-by layers or structures. Using the principles of superposition and cross-cutting relationships, and structures such as unconformities, one can determine the order of geological events.