Answer:
well I done really know ask the others person
Answer:
panic anxiety
Explanation:
Panic anxiety occur unexpectedly, sometimes even when waking up from sleep characterized by its unexpectedness and debilitating, immobilizing intensity it is caused by Severe stress, such as the death of a loved one, divorce, or job loss can also trigger panic anxiety. Panic attacks can also be caused by medical conditions and other physical cause e.g sitting in a position for hours under an unfavorable condition doing a recurring activity. Panic anxiety may occur as part of another disorder, such as panic disorder, social phobia, or depression. Regardless of the cause, panic attacks are treatable.
Answer:
The frequency would double.
Explanation:
Given:
Speed of wave (v) = constant.
Frequency of wave initially (f₁) = 2 Hz
Initial wavelength of the wave (λ₁) = 1 m
Final wavelength of the wave (λ₂) = 0.5 m
Final frequency of the wave (f₂) = ?
We know that the product of wavelength and frequency of the wave is equal to the speed of the wave.
Therefore, framing in equation form, we have:
Wavelength × Frequency = Speed
![\lambda\times f=v](https://tex.z-dn.net/?f=%5Clambda%5Ctimes%20f%3Dv)
It is given that speed of the wave remains the same. So, the product must always be a constant.
Therefore,
![\lambda\times f=constant\ or\ \\\lambda_1\times f_1=\lambda_2\times f_2](https://tex.z-dn.net/?f=%5Clambda%5Ctimes%20f%3Dconstant%5C%20or%5C%20%5C%5C%5Clambda_1%5Ctimes%20f_1%3D%5Clambda_2%5Ctimes%20f_2)
Now, plug in the given values and solve for 'f₂'. This gives,
![1\times 2=0.5\times f_2\\\\f_2=\frac{2}{0.5}=4\ Hz](https://tex.z-dn.net/?f=1%5Ctimes%202%3D0.5%5Ctimes%20f_2%5C%5C%5C%5Cf_2%3D%5Cfrac%7B2%7D%7B0.5%7D%3D4%5C%20Hz)
Therefore, the final frequency is 4 Hz which is double of the initial frequency.
f₂ = 2f₁ = 2 × 2 = 4 Hz
So, the second option is correct.
Blue light can knock electrons off a plate, but red light can't