An insulator has a positive electric charge of 8 × 10^ -17 C. How many electrons were added or removed?
a. 500 electrons removed
b. 20 electrons removed
c. 500 electrons added
d. 20 electrons added
a
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Three resistors of 12 ?, 12 ?, and 6.0 ? are connected together, and an ideal 12-V battery is connected across the combination. What is the current through the battery if they are connected (a) in series or (b) in parallel?
What will be an ideal response?
Venus's crust is thicker than Earth's because
A. Venus has little internal activity, keeping the crust from melting. B. the high temperatures at the surface of Venus have baked the crust. C. volcanic eruptions continuously add more material to the surface. D. rocks on Venus melt at higher temperatures.
According to the Arrhenius theory, basic properties are caused by ______________ ions
Fill in the blank(s) with correct word
The Bohr model pictures a hydrogen atom in its ground state as a proton and an electron separated by the distance a0 = 0.529 × 10^-10 m. The electric potential created by the proton at the position of the electron is
a. -13.6 V. b. +13.6 V. c. -27.2 V. d. +27.2 V. e. +5.12 × 10^9 V.