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The lifetime distributions of high-speed recordable optical disks is assumed to follow lognormal distribution (Irine and Okino, IEEE Trans. on Magnetics, 2007). Suppose μ = 2.5 and σ = 0.5 weeks.
a Compute the mean and variance of this distribution.
b What percent of optical disks are expected to last over 20 weeks?
c If 98% of disks fail before a0 weeks, then determine the value of a0.
Select a learning outcome of any subject area from your state for Pre-Kindergarten or Kindergarten. List the content standard and describe an activity that facilitates learning this concept. Then, describe a form of authentic assessment that you will..
which has higher resistance: the copper wire that carries the power from Bonneville Dam to your circuit breaker box, the copper wire that carries the power from there to your computer, or the copper wire that runs from the from one side of the chi..
A power utility pole has a transformer with 2400 turns in theprimary and 4.5kV coming from the power line. Describe the center-tapped secondary needed to obtain 240V(120V/120V) for a commercial customer.
In your own words, describe why makeup water, chemical additives to the makeup water, and blowdown are necessary in this process. Speculate on the probable disadvantage of making the I/H2O ratio in the blowdown (i) too small, and (ii) too large.
Show and explain how you could make a 2-bit counter that will count up or down on an external control signal. Explain the difference between the input and output times.
The s-plane diagram of a filter shows that it has a cluster of four poles in the left-half s-plane that are arranged in a semi-circle near +/- j628. The filter also has two zeroes at the origin.
Learn some basic battery terminology
Calculate ?Ho for the combustion of butane gas (C4H10), to produce gaseous carbon dioxide and liquid water: 2C4H10 (g) + 13O2(g)->8CO2(g) + 10H2O (l) a. Calculate the standard enthalpy change, ?Ho for the reaction.
At t = t0, the voltage across a certain capacitance C is zero. A pulse of current flows through the capacitance between t0 and t0 +?t, and the voltage across the capacitance increases to V f . What can you say about the peak amplitude Im and area..
Suppose a car of mass m moving on a straight west-east highway at velocity v(t) (positive for motion from west to east) experiences aerodynamic drag force with magnitude v(t) opposing its motion.
The diagram of FIGURE 2 shows a bi-directional opto coupler input interface circuit. When a supply voltage of 20 V is applied the LED carries a current and 2 V is dropped across it. Calculate the value of the LED current and the value of current t..
A student has a coil of unknown inductance and resistance. He connects it in series with a 100 ohm resistor, places a voltmeter across the resistor, and connects the whole circuit to a power supply. When the power supply is 60 V DC
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