Q: Your electronics company has several identical capacitors with capacitance C1 and several
Your electronics company has several identical capacitors with capacitance C1 and several others with capacitance C2. You must determine the values of C1 and C2 but don’t have access to C1 and C2 indi...
See AnswerQ: You are designing capacitors for various applications. For one application,
You are designing capacitors for various applications. For one application, you want the maximum possible stored energy. For another, you want the maximum stored charge. For a third application, you w...
See AnswerQ: Two square conducting plates with sides of length L are separated by
Two square conducting plates with sides of length L are separated by a distance D. A dielectric slab with constant K with dimensions L × L × D is inserted a distance x into t...
See AnswerQ: How many moles of Na+ must m ove per unit area
How many moles of Na+ must m ove per unit area of membrane to change Vm from -70 mV to +30 mV, if we assume that the membrane behaves purely as a capacitor? (a). 10-4 mol/cm2; (b). 10-9 mol/cm2; (c)...
See AnswerQ: Electrons in an electric circuit pass through a resistor. The wire
Electrons in an electric circuit pass through a resistor. The wire on either side of the resistor has the same diameter. (a). How does the drift speed of the electrons before entering the resistor com...
See AnswerQ: Suppose that the egg has a diameter of 200 mm. What
Suppose that the egg has a diameter of 200 mm. What fractional change in the internal Na+ concentration results from the fertilization-induced change in Vm? Assume that Na+ ions are distributed throug...
See AnswerQ: Suppose that the change in Vm was caused by the entry of
Suppose that the change in Vm was caused by the entry of Ca2+ instead of Na+. How many Ca2+ ions would have to enter the cell per unit membrane to produce the change? (a). Half as many as for Na+; (...
See AnswerQ: What is the minimum amount of work that must be done by
What is the minimum amount of work that must be done by the cell to restore Vm to -70 mV? (a). 3 mJ; (b). 3 mJ; (c). 3 nJ; (d). 3 pJ.
See AnswerQ: Electronic flash units for cameras contain a capacitor for storing the energy
Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the flash lasts for 1 175 s with an average light power output of 2.70 × 10...
See AnswerQ: A point charge q1 = +5.00 µC is held
A point charge q1 = +5.00 µC is held fixed in space. From a horizontal distance of 6.00 cm, a small sphere with mass 4.00 × 10-3 kg and charge q2 = +2.00 µC is fired toward the fixed charge with an in...
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