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Part A A budding electronics hobbyist wants to make a simple 1.4 nF capacitor for tuning her crystal radio, using two sheets of aluminum foil as plates, with a few sheets of paper between them as a dielectric. The paper has a dielectric constant of 4.7, and the thickness of one sheet of it is 0.15 mm. If the sheets of paper measure 30 cm × 39 cm and she cuts the aluminum foil to the same dimensions, how many sheets of paper should she use between her plates to get the proper capacitance? Express your answer as a whole number. Part B Suppose for convenience she wants to use a single sheet of posterboard, with the same dielectric constant but a thickness of 10.0 mm, instead of the paper. What area of aluminum foil will she need for her plates to get her 1.4 nF of capacitance? Express your answer using two significant figures. A = m2 Submit Request Answer Part C Suppose she goes high-tech and finds a sheet of Teflon of the same thickness as the posterboard to use as a dielectric. Will she need a larger or smaller area of Teflon than of posterboard? She will need a larger area of Teflon than of posterboard. She will need a smaller area of Teflon than of posterboard.

Part A A budding electronics hobbyist wants to make a simple 1.4 nF capacitor for tuning her crystal radio, using two sheets of aluminum foil as plates, with a few sheets of paper between them as a dielectric. The paper has a dielectric constant of 4.7, and the thickness of one sheet of it is 0.15 mm. If the sheets of paper measure 30 cm × 39 cm and she cuts the aluminum foil to the same dimensions, how many sheets of paper should she use between her plates to get the proper capacitance? Express your answer as a whole number. Part B Suppose for convenience she wants to use a single sheet of posterboard, with the same dielectric constant but a thickness of 10.0 mm, instead of the paper. What area of aluminum foil will she need for her plates to get her 1.4 nF of capacitance? Express your answer using two significant figures. A = m2 Submit Request Answer Part C Suppose she goes high-tech and finds a sheet of Teflon of the same thickness as the posterboard to use as a dielectric. Will she need a larger or smaller area of Teflon than of posterboard? She will need a larger area of Teflon than of posterboard. She will need a smaller area of Teflon than of posterboard. Part A A budding electronics hobbyist wants to make a simple 1.4 nF capacitor for tuning her crystal radio, using two sheets of aluminum foil as plates, with a few sheets of paper between them as a dielectric. The paper has a dielectric constant of 4.7, and the thickness of one sheet of it is 0.15 mm. If the sheets of paper measure 30 cm × 39 cm and she cuts the aluminum foil to the same dimensions, how many sheets of paper should she use between her plates to get the proper capacitance? Express your answer as a whole number. Part B Suppose for convenience she wants to use a single sheet of posterboard, with the same dielectric constant but a thickness of 10.0 mm, instead of the paper. What area of aluminum foil will she need for her plates to get her 1.4 nF of capacitance? Express your answer using two significant figures. A = m2 Submit Request Answer Part C Suppose she goes high-tech and finds a sheet of Teflon of the same thickness as the posterboard to use as a dielectric. Will she need a larger or smaller area of Teflon than of posterboard? She will need a larger area of Teflon than of posterboard. She will need a smaller area of Teflon than of posterboard.

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Part A A budding electronics hobbyist wants to make a simple 1.4 n F capacitor for tuning her crystal radio, using two sheets of aluminum foil as plates, with a few sheets of paper between them as a dielectric. The paper has a dielectric constant of 4.7 , and the thickness of one sheet of it is 0.15 m m . If the sheets of paper measure 30 c m × 39 c m and she cuts the aluminum foil to the same dimensions, how many sheets of paper should she use between her plates to get the proper capacitance? Express your answer as a whole number.
Part B
Suppose for convenience she wants to use a single sheet of posterboard, with the same dielectric constant but a thickness of 10.0 m m , instead of the paper. What area of aluminum foil will she need for her plates to get her 1.4 n F of capacitance?
Express your answer using two significant figures.
◻ ◻ A Σ ϕ A = m 2
Submit Request Answer Part C
Suppose she goes high-tech and finds a sheet of Teflon of the same thickness as the posterboard to use as a dielectric. Will she need a larger or smaller area of Teflon than of posterboard? She will need a larger area of Teflon than of posterboard. She will need a smaller area of Teflon than of posterboard.

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