just need the answer for the two I can\'t figure out please. A hollow glass tube
ID: 1524985 • Letter: J
Question
just need the answer for the two I can't figure out please.
A hollow glass tube A thin-walled hollow circular glass tube, open at both ends, has a radius R and length L (see the figure). The axis of the tube lies along the x axis, with the left end at the origin. The outer sides arc rubbed with silk and acquire a net positive charge Q distributed uniformly. Determine the electric field at a location on the x axis, a distance w from the origin. Carry out all steps including checking your result. Explain each step. You may have to refer to a table of integrals. (Do this on paper. Your instructor may ask you to turn in this work.) Step 1: Since we know the electric field of a charged ring, divide the tube into rings, of thickness dx. Consider a representative ring somewhere In the middle of the tube, with its center at . Draw a diagram illustrating this situation. Step 2: How much charge dQ Is on this ring? Write your answer symbolically. (Use any variable or symbol stated above as necessary.) dQ =(Q/L)dx What is the distance from this ring to the observation location? d = w - L What is the vector from source to observation location? r^bar = What is the integration variable? (Use any variable or symbol stated above as necessary.) xExplanation / Answer
2)
distance , d = w - x
3)
vector , r = (w-x, 0, 0)
w - x = distance from the ring to the observation location
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