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A dynamite blast at a quarry launches a rock straight upward, and 1.6 s later it is rising at a rate of 14 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.7 s after launch.
What are the two possible frequencies to which the local oscillator could be set? What bandwidth should the 10.7 MHz IF amplifier have?
The Finite-Difference Time-Domain (FDTD) method is a computational electromagnetic technique for solving for the electric and magnetic fields in arbitrary spatial domains in the time domain
If mechanical input power is increased following synchronization but not field current, prove that the angle between the resultant current and the terminal voltage will always be delta/2. Prove it geometrically with a graph and also via the equati..
The transmission line has an impedance of 600 ohms and is terminated in a load of 600 ohms. The transmitter delivers an average power of 0.1 W to the input of the line.
The potentiometer is designed to rotate 330 degrees to give the full range of possible resistance. However, the actual measurement range that is used is only 165 degrees indicating positions of a liquid sensor float ranging from 0 to 10 cm (empty ..
The sampling frequency in a DSP system is fs=8 kHz. Anti-aliasing filter used in the system is the second-order Butterworth filter with cutoff frequency of fc=3.4 kHz. What is the percentage of aliasing level at the frequency f=2.5 kHz
Within a region of free space, charge density is given as ρv=ρorcosθ/a c/m3, where ρo and a are constants. Find the total charge lying within (a) the sphere, r
The voltage across a 1x10^(-6)F capacitor is given by v(t)=100e^(-100t) in which time t is in seconds. 1. find an expression for the current 2. find an expression for the power 3. find an expression for the stored energy
In a MOS cascode amplifier, the cascode transistor is required to raise the output resistance by a factor of 40. If the transistor is operated at Vov = 0.2 V, what must its Va be
Calculate the de Broglie wavelength, for: (a) An electron with kinetic energy of (a) 1.0 eV, and (ii) 100 eV. (b) A proton with kinetic energy of 1.0 eV. (c) A singly ionized tungsten atom with k in.
ELF communication signals ( f
To discharge a capacitor of 1mF charged with a voltage of 1 volt we connect it, at time t=0, with a resistor of R-ohm. When we measure the voltage in the resistor we find it to be v_R (t)=e^(-t) u(t). Determine the resistance R.
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