Answer:
horizontal velocity remaing constan thorough out the motion but the vertical motion's velocity changes due to the gravity acting on it.
for everl 1 second the velocity decreases by 9.8 that is the gravity
Answer:
Poynting vector,
Explanation:
It is given that, The electric and magnetic fields of an electromagnetic wave are given by :
Electric field,
Magnetic field,
We need to find the Poynting vector for this wave. the Poynting vector is given by :
So, the Poynting vector for this wave is . Hence, this is the required solution.
Image distance (Di) = 17 cm
Object distance (Do) = 36 cm
Using mirror equation,
1/Di + 1/Do = 1/f
1/17 + 1/36 = 1/f
0.058824 + 0.027777 = 1/f
1/f = 0.086601
f= 11.5472 = 11.55 cm