Select the correct answer.

What influences the strength of an electric field?

the speed of the test charge

B. amount of charge on the test charge

amount of charge on the source charge

D. location of the test charge

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What is quillwork?

a.

soaking porcupine and bird quills with natural dyes and working them into surface patterns on other objects

b.

using a quill pen made from birds to paint ink symbols on bodies

c.

a type of sewing of the women of the Sioux tribe

d.

using a quill pen made from the feather of an eagle to draw tribal symbols on the walls of a teepee