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Suppose a membrane has an active Na-K pump with
and Cm = 1mF as shown in Figure 11.15. Design a stimulus that will drive Vm to threshold at 3 ms. Assume that the threshold potential is 40mV.
(a) Find the current pulse magnitude and duration.
(b) Find and sketch Vm.
Compute the primary current and the braking torque at the instant of plugging (i.e., reversal of the phase sequence) if the slip immediately before plugging is 0.05.
An investigation of a proposed investment has been made
In the reaction 2C8H18 + 25O2 --> 16CO2 + 18 H2O, the ratio of volumes of O2 to CO2 is ?
Determine the resultant line current and power factor.
Suppose the pressure in the reactor eventually equilibrates (levels out) at 360 kPa. What is the equilibrium percent conversion of NO? Calculate the reaction equilibrium constant at the prevailing temperature, Kp [(atm)-0.5]
The heat capacity at constant pressure of hydrogen cyanide is given by the expression Cp[J/(mol ·°C)] = 35.3 + 0.0291T(°C) (a) Write an expression for the heat capacity at constant volume for HCN, assuming ideal gas behavior.
Calculate the magnetic flux in the core.
If the torque lost due to friction and wind age is 7% of the shaft torque, calculate the developed torque.
to find the force between the wires. Discuss the nature of the force when the wires carry currents in the same direction, and in opposite directions.
The full-load slip is 4%. Determine the percentage reduction in the applied voltage (i.e., the percentage tap on the autotransformer).
A paper by Ruckenstein and Tsai (1981)* shows that an "optimum pore size" can exist for catalytic reactions of large solute molecules in solvent-filled pores. Obtain the paper from your library and read it carefully. Then derive the analytical equati..
Assume you have gas in a cylinder equipped with a piston. There are weights on the piston creating pressure down on the gas.
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