Yes,Physics 5pts just now<span>are the 5 steps in the process of air circulation in order</span>
Answer:
a) v = √ 2gL abd b) θ = 45º
Explanation:
a) for this part we use the law of conservation of energy,
Highest starting point
Em₀ = U = mg h
Final point. Lower
Em₂ = ½ m v²
Em₀ = Em₂
m g h = ½ m v²
v = √2g h
v = √ 2gL
b) the definition of power is the relationship between work and time, but work is the product of force by displacement
P = W / t = F. d / t = F. v
If we use Newton's second law, with one axis of the tangential reference system to the trajectory and the other perpendicular, in the direction of the rope, the only force we have to break down is the weight
sin θ = Wt / W
Wt = W sin θ
This force is parallel to the movement and also to the speed, whereby the scalar product is reduced to the ordinary product
P = F v
The equation that describes the pendulum's motion is
θ = θ₀ cos (wt)
Let's replace
P = (W sin θ) θ₀ cos (wt)
P = W θ₀ sint θ cos (wt)
We use the equation of rotational kinematics
θ = wt
P = Wθ₀ sin θ cos θ
Let's use
sin 2θ = 2 sin θ cos θ
P = Wθ₀/2 sin 2θ
This expression is maximum when the sine has a value of one (sin 2θ = 1), which occurs for 90º,
2θ = 90
θ = 45º
Answer:
denser media the speed is greater
Explanation:
The speed of sound is given by the relation
where B is the volume modulus and ρ the density of the medium
When analyzing the previous expression, the amplitude of the sound depends on the energy carried by the wave.
Wave speed, is given by the relationship between two magnitudes, we analyze their values for different media. The volume modulus for gases has values of the order of 10⁵ Pa, for liquids of the order of 10⁹ Pa and for solids of 10¹⁰ to 10¹¹ Pa, while the density has values of the order of 10⁻¹ to 10⁰ kg / m³ for gases for liquids 10³ kg / m³ and for solids of the order of 10³ to 10⁴ kg / m³
let's find the order of magnitude of the speed of sound
Gases
v =√ 10⁵/10⁰ = 300 m / s
liquids
v =√ 10⁹/10³ = 1000 m / s
solid
v = √ 10¹¹/ 10⁴ = 3000 m / s
We can see that in denser media the speed is greater
Answer:
1003.9 Nm²/C
Explanation:
Parameters given:
Radius of sphere, r = 1.88 m
Electric field at surface of sphere, E = 22.6 N/C
Electric Flux, Φ, is given as:
Φ = E * A
Where A = Surface area
Surface Area of sphere = 4 * pi * r²
= 4 * pi * 1.88²
= 44.4 m²
Φ = 22.6 * 44.4
Φ = 1003.9 Nm²/C
Interact: Meet
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