Answer:
398.0 N = 89.74 pound force
Explanation:
Gravitational force:
R = 6371 km (Radius of the Earth)
At the surface, weight of the surface w =220 pounds = 978.61 N
2250 miles = 3621024 m
total distance from the center of the Earth
3621024 m + 6.371×10⁶ m = 9.99×10⁶ m
398.0 N = 89.74 pound force
Answer
given,
Distance for decibel reading
r₁ = 13 m
r₂ = 24 m
When the engineer is at r₁ reading is β₁ = 101 dB
now, Calculating the Intensity at r₁
Using formula
I₀ = 10⁻¹² W/m²
now inserting the given values
I = 0.01258 W/m²
now, calculating power at r₁
P₁ = I₁ A₁
P₁ = 0.01258 x 4 π r²
P₁ = 0.01258 x 4 π x 13²
P₁ = 26.72 W
Explanation:
The graphs show maximum gravitational potential energy for the pendulum and they correspond to positions #1 and #5.