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A speeder is pulling directly away and increasing his distance from a police car that is moving at 25.1 m/s with respect to the ground. The radar gun in the police car emits an electromagnetic wave with a frequency of 7.16E+9 Hz. The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 322 Hz less than the emitted frequency. Calculate the speeder's speed with respect to the ground.
In the question below only focus on the parameter or parameters that are relevant to the particular property you are being asked about in the particular question. If you need to constrain a parameter to satisfy the stated criterion.
Laplace transform of a pulse, Consider computing the Laplace transform of a pulse: use the integral formula to find P(s)
the energy stored in a 4H inductor is 150J and is increasing at 200J/s at t=4s 1. determine the current magnitude at t=4s 2. determine the current voltage at t=4s 3. does the current enter or leave the positive terminal of the inductor
A common source amplifier utilizes a mosfet for which Va= 12.5 V and is operated at Vov= .25V. What is the value of (gmro) The amplifier feed a load resistance RL= 15Kohms. The designer selects RD=2RL. If its required to realizes an overall voltag..
Because A-B=A+(-B), the subtraction of signed numbers can be accomplished by adding the complement. Subtract each of the following pairs of 5-bit binary numbers by adding the complement of the subtrahend to the minuend.
A balanced ac bridge has the following constants arm AB, R= 2,000Ω in parallel with C= 0.047μF; arm BC, R=1,000Ω in series with C= 0.47μF; arm BC, R=1000Ω in series with C= 0.47μF; arm CD, unknown ; arm DA, C= 0.5 μF.
Design the base-emitter area of NPN BJT so that its transconductance gain is gm=2 A/V at VBE=0.70 V. The technological parameters are as folows: the emitter is heavily doped, the base doping is 5*1017cm-3,the base width is W=0.5μm
Four frequencies are applied at the input of anon-linear amplifier. Write down all of the frequency components at the output of the non-linear device. Write down only the first three harmonics find out the frequency components at the output
If the fundamental frequency of a square wave is 10 kHz, what are the first three frequency components contained in the square wave
design a pulse-mode (Asynchronous, no clock) automatic vending machine. The candy bars inside the machine cost 25 cents. The machine accepts nickels, dimes and quarters. There is an electromechanical system that accepts the coins sequentially.
One reason that the maximum electric field is important is because of the possibility of impact ionization, which may be desired or undesired in a particular application. The process of impact ionization is dependent on the electric field
The tray heats up according to ut = c2?u + h(x, y) where h(x, y) = 5(1 - sin(8πy)) and c2 = 10-4. Assume that u = 200 along each edge. Find the steady state temperature distribution of the tray.
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