A 142 cm tall person stands
250 cm from a camera, which has
a 15.0 cm focal length lens. How
big is the image of the person on
the film?
(Mind your minus signs.)
(Unit = cm)

Height of the image is 9.06 cm

Explanation:

As we know that the person is standing 250 cm from the lens

Now we know that the focal length of the lens is

f = 15 cm

now by lens formula we have

now we know by the formula of magnification

now we have

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle