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A wire has a resistance of 29.7-ohm . It is melted down, and from the same volume of metal a new wire is made that is 4 times longer than the original wire. What is the resistance of the new wire?
Draw a FBD (free body diagram) for a rocket flying at an arbitrary angle. Indicate the force vector due to gravity and force vector due to air resistance. Why does the direction of the net force change over the course of the rocket's trajectory
An infinite line of charge sits on the z axis in free space. The linear charge density is p = 1C/m. What is the potential difference at point (2,pi/2,4) with respect to point (5,0,1) assuming both points are in cylindrical coordinates.
A 230 V DC series motor has an armature circuit resistance of 0.2 and a eld circuit resistance of 0.1. At rated voltage, the motor draws a line current of 40A and runs at a speed of 1000 rpm.
Using SR Flip-flops and NAND gates, design a system that outputs 1 if it takes an even number of clock cycles to recognize the pattern 11-0-101. Otherwise it outputs 0.
The voltage across a resistor is given by Ohm's Law: V=R I. Write a program that asks for resistance R in ohms, and current I in amps for several resistors, then calculates and displays the voltage across each resistor.
A pn junction diode is forward biased by a Thevenin circuit consisting of Rth = 5kohm and Vth = 10sinwt where w= 2pi*10rads/s. Find the diode voltage and current as functions of time.
Once the voltage across the load reaches 5V the load will no longer act as an open circuit and the capacitor will discharge. Once the load voltage has droped to 0.2 the load will act as an open circuit and the capactior will begin to charge once ..
A lossless transmission line with the electrical length of l = 0.3 lamda and the characteristics impedance of Z0 = 75 is terminated with a complex load ZL = 30 -j20 calculate the reflection coeficient at the load, the SWR on the line
a) Draw the phasor diagram for V1, V2 and V3. b) Find out the value of V1+V2-V3 and draw the phasor diagram for it. c) If the frequency of all signals is 60Hz, then what is the angular position V1 and v2 and v3 at 10th second
Describe and explain drift current and diffusion current in a PN junction in thermal equilibrium. What causes each In which directions are the electrons, holes, electron current, and hole current flowing for each effect
Determine the relative permittivity of the dielectric, the maximum and minimum electric field intensities in medium 1 and the electric field intensity in medium 2.
estimate results in the lights being switched on for an average of 19 hours per day - 6 hours more than needed. The room is lit with seven, 60 W incandescent bulbs, which you can assume are powered by a 115 V constant voltage source.
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