Answer:
The wavelength is
The wave number is
The wave function is
Explanation:
From the question we are told that
The frequency of the sound wave is
The speed of the wave is
The wavelength of the wave is mathematically evaluated as
substituting values
The wave number is mathematically represented as
substituting values
The general form of wave function is
given that the amplitude is
While which is the angular velocity is represented as
and k which is the angular wave number is mathematically represented as
The wave function becomes
substituting values
I will convert the unit of distance to SI unit for simplification.
1 mile = 1.6 km
Therefore, 0.245 mile = 0.245×1.6 = 0.392 km = 392 meters
Radio waves travels back after bouncing off from car.
Therefore, total distance traveled by radio waves = 2×392 = 784 meters.
Speed of radio waves = 3×10⁸ m/s
Therefore, time take by radar beam to <span> travel to a car and back = 784/3</span>×10⁸
=2.61×10⁻⁶sec
Answer:
Considering the lack of information, this is the best I can do.
The average velocity can be calculated via .
If there is acceleration instead of V or V not given, use the first kinematic equation:
Hope it helps :) and provide more complete information and I can answer better