R=√20²+40²+2.20.40 cos 50
R=55 N
R/sin β = F/sin α
55/sin 50 = 40/sin α
α = 33°
The speed of the wave with the given frequency and wavelength is 1.2m/s.
Given the data in the question;
- Wavelength of the wave;
- Frequency;
- Speed of the wave;
<h3>
Wavelength</h3>
Wavelength is the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.
It is expressed as;
Where v is velocity/speed and f is frequency.
Now, we can easily get the speed of the wave by substituting our given values into the expression above.
Therefore, the speed of the wave with the given frequency and wavelength is 1.2m/s.
Learn more about Speed, Frequency and Wavelength here: brainly.com/question/27120701
Answer:
Nobel gases
Explanation:
Well since Krypton is in a group called the “Noble Gases”, then Krypton is similar to the others; Xenon, Helium, Neon, Argon, and Radon.
There are more than two.
The two that you're thinking of are the Fahrenheit and Celsius scales.
But sometime when you feel like it and have a few minutes to spare,
you might like to go online and read about these other scales:
-- Kelvin
-- Rankine
-- Reaumur
-- Newton
-- Delisle
-- Rømer