10.1. C
Concave minor forms on a screen a real image
of hoice the linear dimension of the object Object
and screen are then moved unnil the image is three
Kmes the size of the object. If the shift of the screen
PS 25cm, determine the shift of the object and the
focal length of the mirror.​

Ahole in the ground in the shape of an inverted cone is 14 meters deep and has radius at the top of 11 meters. the cone is filled to the top with sawdust. the density of the sawdust depends upon the depth, x, following the formula ρ ( x ) = 2.5 + 1.2 e − 0.7 x kg/m3. find the total mass of sawdust in the conical hole.