Answer:
f = 214.4 Hz
Explanation:
It is a process of standing waves two waves one that travels to the right and another to the left are added, it is assumed that the frequency of the wave does not change, the result is a stable wave.
In the process of reflection of the wave there are two possibilities if the end is closed a node is formed and if it is open a belly is formed (antinode or maximum)
Let's apply these reasoning to our problem. We assume that the wave initially travels to the right, as it enters through an open end at that point it has a belly. When it reaches the other end that is open we also have a belly. As we see we have bellies at the ends, for there to be a wave inside the tube there must be a node, for the lowest resonance there is only one node, which must be in the center of the tube.
The distance from a node to a maximum (belly) corresponds to ¼ wavelength, so in this case we have within ½ tube wavelength
L = ½ λ
λ = 2L
λ = 2 0.80
λ = 1.60 m
Having the wavelength and the speed of sound let's use
v = λ f
f = v / λ
f = 343 / 1.60
f = 214.4 Hz
Explanation:
Given:
y₀ = 22 m
y = 1.5 m
v₀ = 0 m/s
a = -9.8 m/s²
Find: v
v² = v₀² + 2a (y − y₀)
v² = (0 m/s)² + 2 (-9.8 m/s²) (1.5 m − 22 m)
v = -20.0 m/s
The gravity of Earth, denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation and the centrifugal force. In SI units this acceleration is measured in metres per second squared or equivalently in newtons per kilogram.
Answer:
Radio waves have longer wavelength
Explanation:
Radio wave is an electromagnetic frequency that has the ability to travel through long distance. They have frequencies shuttling been the range of 10^4 hz and a frequency of 10^12 hz
Light wave is also called visible light. This is because it is visible to the naked eye, despite it being in the electromagnetic spectrum. It's frequency is usually between 4*10^-7 hz and a frequency of 7*10^-7 hz.
As can be seen from both, the radio waves length are quite far stronger than that of the light waves.
As we know from the equation of kinematics
here it starts from rest
final angular speed will become 90 rad/s in time interval of t = 10 s
now we will have
So it will stop after 50 seconds of constant deceleration.