Answer:
0.6375 m/s
Explanation:
Let x be the distance of the man from the building
from the figure attached
initially the value of x=12
Given:
where the negative sign depicts that the distance of the man from the building is decreasing.
Now, Let The length of the shadow be = y
we have to calculate when x=4
from the similar triangles
we have,
or
Differentiating with respect to time 't' we get
or
Now for x = 4, and we have,
or
<u>here, the negative sign depicts the decrease in length and in the question it is asked the decreasing rate thus, the answer is </u><u>0.6375m/s</u>
C) The president submits the federal budget every year.
Hope this helps you!
For both NPN and PNP this is true:
The base is between the collector and the emitter.
The black squirrel has zero kinetic energy (if it's not moving) and lower gravitational potential energy than the red squirrel or zero gravitational potential energy if the ground is assumed to be zero gravitational potential line.
Explanation:
this is my answer this is helpful for you