A lightbulb is 3.8 m from a wall. What is the focal length of a lens that will form an image on the wall that is twice the size of the lightbulb? (focal length is f=0.84 meters)

What is the position (measured from the bulb) of the lens.

Bag of bolts weight 29.4n

During the 1800s. hope this !

Need more information like a picture

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.