-Brody was exposed to harmful noise
-Ashley’s ears have aged
-Keaton has bacteria in his ear
-Brian has earwax build up
Answer:
6400 m
Explanation:
You need to use the bulk modulus, K:
K = ρ dP/dρ
where ρ is density and P is pressure
Since ρ is changing by very little, we can say:
K ≈ ρ ΔP/Δρ
Therefore, solving for ΔP:
ΔP = K Δρ / ρ
We can calculate K from Young's modulus (E) and Poisson's ratio (ν):
K = E / (3 (1 - 2ν))
Substituting:
ΔP = E / (3 (1 - 2ν)) (Δρ / ρ)
Before compression:
ρ = m / V
After compression:
ρ+Δρ = m / (V - 0.001 V)
ρ+Δρ = m / (0.999 V)
ρ+Δρ = ρ / 0.999
1 + (Δρ/ρ) = 1 / 0.999
Δρ/ρ = (1 / 0.999) - 1
Δρ/ρ = 0.001 / 0.999
Given:
E = 69 GPa = 69×10⁹ Pa
ν = 0.32
ΔP = 69×10⁹ Pa / (3 (1 - 2×0.32)) (0.001/0.999)
ΔP = 64.0×10⁶ Pa
If we assume seawater density is constant at 1027 kg/m³, then:
ρgh = P
(1027 kg/m³) (9.81 m/s²) h = 64.0×10⁶ Pa
h = 6350 m
Rounded to two sig-figs, the ocean depth at which the sphere's volume is reduced by 0.10% is approximately 6400 m.
Answer:
Moon slowly moves eastward, rising later each day and passing through its phases:
Explanation:
Responder:
Explicación:
Usando una de las ecuaciones de movimiento expresadas como;
v = u + en donde;
v es la velocidad final del objeto
u es la velocidad inicial del objeto
a es la aceleración
t es el tiempo que toma
Parámetros dados
v = 150 m / s
u = 0 m / s
a = 9,5 m / s²
Necesario
tiempo tomado
Al sustituir los parámetros dados en la fórmula
150 = 0 + 9.5t
9,5 t = 150
Dividiendo ambos lados por 9.5
9,5 t / 9,5 = 150 / 9,5
t = 15,79 segundos
Por lo tanto, el tiempo que alcanzará una velocidad de 150 m / s es de 15,79 segundos.
