Convex mirror has nagative focal tength
Concave mirror
has possitive focal lengther
LA Convex mirror has a focal length 18 cm)
producco
image on its axis
axis bcm away
from the mirror
Calculate the possition of the object
T
D
5T

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2