Answer:
462
Explanation:
231 cubes= half of N (because only 3 of the faces are visible, there are 6 faces altogether)
N=462
Answer:
A. 59.4
Explanation:
The refractive index of the glass, n₁ = 1.50
The angle of incidence of the light, θ₁ = 35°
The refractive index of air, n₂ = 1.0
Snell's law states that n₁·sin(θ₁) = n₂·sin(θ₂)
Where;
θ₂ = The angle of refraction of the light, which is the angle the light will have when it passes from the glass into the air
Therefore;
θ₂ = arcsin(n₁·sin(θ₁)/n₂)
Plugging in the values of n₁, n₂ and θ₁ gives;
θ₂ = arcsin(1.50 × sin(35°)/1.0) ≈ 59.357551° ≈ 59.4°
The angle the light will have when it passes from the glass into the air, θ₂ ≈ 59.4°.
Explanation:
The moment of A about B is given by the formula
where M is the moment, F is the force acting perpandicular to the axis of rotation about B by A, and d is the horizontal distance of A from B along the axis of rotation.
Now
(a) At X,
(b) At 0.5m from X,
(c) At Y,
where negative sign indicates clockwise rotation of the child about Z.
(d) At Z,
Answer:Yes that is correct
Explanation:
Answer: B
Explanation:
The reason why because the jet are far away at first then when the jet come near it louder
