Answer: momentum afterwards = 1040.4kgm/s
Explanation:
<span>The erratum in this sentence is that clothes are removed from the water by the action of centripetal force. The holes in the washing machine drum enables the clothes to move along the circular path. The holes also enable the water to escape from the machine and pushes the water to move alon gthe circular motion as well. While there is motion, the holes keep the clothes moving inward.</span>
The flux through a surface is given by the scalar product of the field strength and the area
of the surface.
As the rectangular surface is in xy plane the flux corresponding to x and y component of
field will be zero (parallel to the surface) and the flux through the surface is only due to z
component of the field.
Because flux is the dot product of Electric field and area vector. So, parallel to surface is 0.
So,
The z component of the field is varying with x only and directly
proportional to x coordinate. (cx k)
Consider an infinitely thin strip of the surface at a distance x from y axis of thickness dx as
in figure. Field at this strip will have magnitude c*x and will be normal to the surface hence
the flux through this strip will be given by :
P = √ [(px)^2 + (py)^2]
we know that px is 100 kg m/sec
and we know that py is 98 m/sec
So, to find out the momentum, you just need to insert the number into the equation
p = √(v1^2 + v2^2)
<span>p = </span>√<span>(98^2 + 100^2) </span>
<span>p = 140.01 </span>
<span>p = 1.4 x 10^2 k m/s</span>