The concepts used to solve this problem are those related to the Pythagorean theorem for which we will calculate the distance and the pitch.
According to the attached diagram we have that the expression of the resulting displacement is
![R = \sqrt{(3b)^2+(4b)^2}](https://tex.z-dn.net/?f=R%20%3D%20%5Csqrt%7B%283b%29%5E2%2B%284b%29%5E2%7D)
Therefore the resultant displacement of the girl is
![R = \sqrt{(9b^2+16b^2)}](https://tex.z-dn.net/?f=R%20%3D%20%5Csqrt%7B%289b%5E2%2B16b%5E2%29%7D)
![R = \sqrt{25b^2}](https://tex.z-dn.net/?f=R%20%3D%20%5Csqrt%7B25b%5E2%7D)
![R = 5b](https://tex.z-dn.net/?f=R%20%3D%205b)
Therefore the girl has displaced around of 5 blocks
C. change length and direction
Explanation:
The density of the material in which the light wave is travelling affects the speed of the wave. Different materials have different densities and they effect differently light waves which travel through them. Light waves may change direction at the boundary between two transparent materials, depending on material density. Density also impacts the speed of light. The denser the material, the slower light travels through it. The wavelength also decreases as light travels through the denser medium.
It needs 8 to be stable so it is already stable
Answer:
Rs. 432*10^3 (In kilowatts per hour)
I hope it will be useful.