Suppose the flat circular disk of figure 23-15 in the textbook (example 23-9) has a nonuniform surface charge density σ=ar2σ=ar2, where rr is measured from the center of the disk.

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

what are the statements

може ли да зареждате повече информация, моля