Absorbtion consists of when light strikes on an object and bounces off.
Answer:
Explanation:
Given
Initial velocity of ball 
height of window 
Using Equation of motion

where u=initial velocity
t=time
a=acceleration
As ball is already is at a height of 20 m so



(b)highest point is obtained at v=0

where
v=final velocity
u=initial velocity
a=acceleration
s=displacement



Highest Point will be 
(c)Time taken when the ball hit the ground i.e. at Y=0


impact velocity 
<span>.87 m/s^2 ,hope this helps!!!!!!</span>
Answer:
Current in the wire is given as

Explanation:
magnetic field due to long current carrying wire is given as

so we have magnetic force on moving charge is given as

so we have

so we have

