formula for wavelength = speed/frequency
So 1500/200 = 7.5 meters
Answer:
Iron deficiency
Explanation:
or more scientifically explained as decreased hemoglobin levels in your blood but still caused by lack of iron.
First you calculate how long it will take for the object to fall the 90 meters. We'll take Earth's gravity acceleration as 9.8m/s²
<em />
<em>Equation:</em>
x = x₀ + v₀ * (t - t₀) + 1/2 * a * (t - t₀)²
x -> Final position in meters
x₀ -> Starting position
v₀ -> Starting velocity
t -> Final time
t₀ -> Starting time
a -> Acceleration
<em>Our case:</em>
x = 0
x₀ = 90m
v₀ = 0m/s
t = ?
t₀ = 0
a = -9.8m/s² (Minus 9.8 because it's on top of a cliff (90m) and it's falling to ground level (0m), so it's substracting)
0 = 90 - 1/2 * 9.8 * (t - 0)²
0 = 90 - 4.9t²
4.9t² = 90
t² = 90/4.9
t = √(18.36) = 4.28 seconds
To calculate the speed, just multiply the seconds it takes to hit the ground by the acceleration of Earth's gravity:
4.28 * 9.8 = 42m/s
The frequency will not change