The equation yı = 10- sin(6.6t - 0.2x) represents a plane wave travelling in a medium along the x-direction, y being the displacement at the point x at time t, both expressed in centimeters and t in milliseconds. (a.) In which direction is the wave moving? Explain. (b.) Determine the amplitude, wavelength and frequency of the wave. (c.) Calculate the speed of the wave and the maximum speed of a particle of the medium due to the wave. V, is later reflected at a boundary along its path and the reflected wave is denoted y2. (d.) Write down a similar sinusoidal expression for y,. The superposition of y, and y2 produces a new wave y3. (e.) State the nature of y3. (f.) State any three differences between y, and y,. (g.) Determine the maximum and minimum amplitudes of vibration of y3
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
Answer Exercise 9 (d), (e), (f) and (g)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
