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You are flying in an ultra-light aircraft at a speed of 49.8 m/s. An eagle, whose speed is 16.0 m/s, is flying directly toward you. Each of the given speeds is relative to the ground. The eagle emits a shrill cry whose frequency is 3940 Hz. The speed of sound is 330 m/s. What frequency do you hear?
The normalized lowpass filter with a cutoff frequency of 1 rad/sec is given as Hp(s) 1/s+1 a. Use Hp(s) and the BLT to obtain an corresponding IIR digital high passs filter with a cutoff of 30 Hz, assuming a sampling rate of 200 hz,
The signal transmitted by a Base Station has a power of 1 mW at a distance of 1 m from the transmitter. Measurements have shown that the propagation exponent for the path loss is n=3 up to a distance of 1 km and n=4 beyond that.
A silver-coated sphere of radius 5 cm carries a total charge of 12 nC uniformly distributedon its surface in free space. (a)Calculate |D| on the surface of the sphere and (b)external to the sphere
Boron donor atome at a concentration of 10^15 cm^-3 are distributed uniformley throughout a silicon sample. The sample is then also doped with 6*10^15 cm^-3 of phosphorous. calculate the position of the Fermi level
A star-bus hybrid topology consists of a main three branch star toplogy with each branch connecting three stations in a bus topology. This toplogy is changed to a new bus-ring hybrid topology with main five station bus topology.
Rain affects the downlink from the satellite and the overall CNR ratio in the receiver falls by 6.0 dB to 13.0 dB. What is the bit error rate and the time between errors now?
Given the following function in canonical SOP form, h = a'bc' + a'bc + ab'c + abc' + abc use Boolean algebra to simplify h down to a minimum SOP expression that contain only 2 terms and 3 literals.
Find the values of I and V for the circuits assuming diode are ideal. Consider Vin=0,2,6, and 10V. Also plot V vs. Vin for Vin ranging from -10V to +10V
The manufacture of 6V -dry-cell flashlight battery says that the batter will deliver 15mA for 60 continuous hours. During that time the voltage will drop from 6V to 4V. Assume the drop in voltage is linear with time,
An optical signal from a modulator can be sent to multiple channels by the LCSLM. This; however, requires that the beam size from the AM is adjusted to match the size of the SLM area. Assume that both lenses in an AM setup are identical
if the energy strored in the fully charged battery is used to lift the battery with 100% efficiency, what height is attained. Assume that the acceleration due to gravity is 9.8 m/s^(2) and is constant with height.
Now that you have gained some familiarity with solar cells and their characteristics, what are your impressions about the efficiencies of these devices What are some applications for solar cells that are currently being used Why is this technology..
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