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1. In a scanning electron microscope, an electron is accelerated by a static electrode biased with a 12 kV voltage relative to the electron source. Upon bombarding the sample the electron “kick out†photons with specific wavelength. Suppose the energy is conserved during the process, i.e., the electrons kinetic energy is completely absorbed by the emitted photon. Calculate the wavelength of the emitted photon. Look up the photon wavelength in an EM spectra chart and find which spectrum range this photon belongs to, e.g. visible lights, ultra-violet, etc.?
2. In an electronic device, the current conducting electron has an effective mass of 0.26m0, with m0 being the still mass of an electron. Suppose the electron has an observed velocity of 5ï‚´107 cm/s. Using Heisenberg Principle, estimate the uncertainty of the displacement (location) of the electron.
3. Calculate the first 3 energy levels of an electron trapped in a 10Ã...-wide infinite well. Express the energy levels in eV.
What resistance must be connected in series with a heater rated at 150mA with hot resistance of 320 ohm in order to operate it safely from a 117-V source. What power rating must this resistor have
A semiconductor company has the following costs associated with Product X: - Fixed cost of $1B ($1,000,000,000) - Die cost of $6 at a die yield of 50% - Testing and packaging cost of $3 per die - A final test yield of 90% with a product volume of 500..
What fixed point unsigned representation, with how many bits and how many bits to the left of the binary point, should we use if we need to represent numbers in the range 0 - 100 with a resolution of .001 or better
In animation programs, special effects are achieved by changing the properties of objects. What instruction is used to change the opacity and color properties of objects in the Zeus example world?
MOS (p and n) npn and pnp transistors with parameters given in the text or select your own by using industrial data sheets, available on the internet. Also resistors, capacitors, and power supplies (10 V, 5 V, and 3.3 V) are available.
A 1.8-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents/kWh, what is the cost of its operation for 30 days
Consider the following signal y[n]; y[n] = X1[n+3] * X2[n] The signals X1 and X2 are defined as X1[n]=((1/2)^n) u[n] X2[n]= ((1/3)^n u[n] Determine the Z transform of y[n].
The line is terminated in a load RL = 25 ohm. Use the bounce diagram to plot V(t) at a point midway along the length of the line from t = 0 to t = 25 ns.
Important information about Frequency Divider, Design a frequency divider circuit that will output three pulse frequencies: 25 kHz, 10kHz, and 2.5kHz. Assume that only a 150 kHz CMOS compatible signal is available for the divider input
A given peripheral has 3 address lines (allowing access to 8 internal addresses) and requires that address lines A2-A0 to be used. It is desired that this peripheral occupy the hex address range, EB80-EB82 in a given computer system memory map
Calculate the probability that the system will fail in 3,000 hours. Supposing no failure of any component occurs in 5,000 hours of operation. What would be your revised estimate of failure rates of the components in your system?
Rate at which succesful packets arrive at network node, After traversing a wireless filled channel packets arrive at a networks node according to a Poisson process with rate Lambda
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