Answer:
92 m/s
Explanation:
The speed of Airplane when observed from the ground is 203 m/s i.e., speed of Airplane when there is no wind = ![v_a](https://tex.z-dn.net/?f=v_a)
The speed of the airplane relative to the air is 111 m/s = ![v_r](https://tex.z-dn.net/?f=v_r)
This means that the airplane is moving against the current
Speed of the current with respect to the ground = ![v_c](https://tex.z-dn.net/?f=v_c)
![v_a-v_c=v_r\\\Rightarrow 203-v_c=111\\\Rightarrow v_c=203-111\\\Rightarrow v_c=92\ m/s](https://tex.z-dn.net/?f=v_a-v_c%3Dv_r%5C%5C%5CRightarrow%20203-v_c%3D111%5C%5C%5CRightarrow%20v_c%3D203-111%5C%5C%5CRightarrow%20v_c%3D92%5C%20m%2Fs)
Velocity of current has to be atleast 92 m/s
The answer is A. Sees more intense wavelengths reaching the surface
Answer:
terms of refraction and wavelength, why dispersion of white light happens.
Explanation:
hope it helps
Answer:
Reliability can be estimated by comparing different versions of the same measurement. Validity is harder to assess, but it can be estimated by comparing the results to other relevant data or theory.