We can’t see the attachment :(
So directly the cell density value in a rectangle is:
In this exercise, we must first calculate the area of the rectangle, remembering that you need to convert from nm to cm is:
Next, let's calculate the density from the calculated area:
In this way, the calculation represents that there is:
Learn more: brainly.com/question/18320053
Answer:
80mm or 8cm
Explanation:
According to the lens formula,
1/f = 1/u+1/v
If the object distance u = 4cm = 40mm
Object height = 1.5mm
Image height = 3mm
First, we need to get the image distance (v) using the magnification formula Magnification = image distance/object distance = Image height/object height
v/40=3/1.5
1.5v = 120
v = 120/1.5
v = 80mm
The image distance is 80mm
To get the focal length, we will substitute the image distance and the object distance in the mirror formula to have;
1/f = 1/40+1/-80
Note that the image formed by the lens is an upright image (virtual), therefore the image distance will be negative.
Also the focal length of the converging lens is positive. Our formula will become;
1/f = 1/40-1/80
1/f = 2-1/80
1/f = 1/80
f = 80mm
The focal length of the lens 80mm or 8cm
I think it is b cause I don’t think you do that
It is because change in the Mass of the object balances the change in the Volume of the object equally...........
