Answer:
1.4 m
Explanation:
v = Speed of sound in water = 1400 m/s
f = Frequency of sound = 1000 Hz
= Wavelength
When we multiply the frequency and the wavelength of a wave we get the velocity of sound in that medium
The wavelength of the sound waves in water is 1.4 m
To solve this problem we will apply the second law of kinematics that describes the position as a function of speed, time and its acceleration, as
Here,
= Initial velocity
t = Time
a = Acceleration
Our values are,
Replacing we have that
From this expression we could determine the position traveled, without considering that the given speed is the same assumed in the term of acceleration. Under this consideration we would have to v = 4m / s
C a glass eye is my best guess because its all glass and a fake eye not actually working so thats my theroy.
Answer:
662 nm
Explanation:
given,
camera lens of n = 1.5
magnesium fluoride n = 1.38
thickness = 120 n m = 120 × 10⁻⁹m
thickness =
wave length = 120× 10⁻⁹ × 4 × 1.38
= 0.662 × 10⁻⁶ m
= 662 nm
hence, the wavelength is equal to 662 nm