Time taken by the package to reach the sea level= 13.7 s
height=h=925 m
initial velocity along vertical= vi=0
acceleration due to gravity=g=9.8 m/s^2
using the kinematic equation h= Vi*t + 1/2 gt^2
925=0(t)+1/2 (9.8)t^2
4.9 t^2=925
t= 13.7 s
Answer:
Answer is B.
Because the wavelength of infrared is shorter than microwave radiation
It protects us from the magnetic/electrical radiation that comes from the sun. High radiation periods coincide with solar storms.
Well I think B hope this helps
