An object is placed 60 cm in front of a concave mirror whose focal length is 20 cm. What is the image position?

a. 20 cm in front of the mirror
b. 30 cm in front of the mirror
.
c. 60 cm behind the mirror
d. 30 cm behind the mirror
2

Velocity=total displacement/timefrom house to store is 500 from store to neighbor is 200 therefore total displacement=500+200=700metrestherefore,700metres/910seconds=0.8metres per second

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

If you're looking for an even spread of clay, silt and sand, add a considerable amount of sand and some clay until the 3 even out". soil texture triangle. silty clay loam soil is approximately 20 percent or less sand, 25 to 40 percent clay, and 40 to 70 percent silt.