For the given wave speed, the frequency is 2.0 Hz
<h3>What is frequency?</h3>
The frequency is the number of cycles per second in the sinusoidal wave.
Given is the length of the string L = 40cm, the wave speed v =320 cm/s, then the wavelength is
λ =4L
λ =4 x 40 cm =160 cm.
The frequency is related to the wavelength as
f =v/λ
f =320/160
f=2.0 Hz
Thus, the frequency is 2.0 Hz.
Learn more about frequency.
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Answer:
To share a positive experience she had with a pen pal
Explanation:
Just read the story :)
Answer:
The neutrinos are produced in the core of the sun by nuclear fusion and measuring their number helps us confirm that there are enough proton-proton chain reactions of each which produce a neutrino and going on in the Sun's core to explain the energy output of the Sun.
Solve this using Olm's law, which relates current (C), voltage (V), and resistance (R). Olm's law says:

We are told that voltage, V = 12V, and resistance, R = 4.8 <span>Ω. Plug these values into the equation and solve for current:
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Answer: Current = 2.5 Amperes</span>
It’s red shift and blue shift because This only occurs when the frequency of the wave is made longer or shorter due to the movement of the source relative to the observer