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A narrow beam of electrons is pointed, in vacuum, directly towards a very small spherical target that carries a negative charge of Q = -2x10-11 C. The initial kinetic energy of an individual electron in the beam is ε0 = 100 eV (1 eV = 1.6x10-19 J) and the initial distance of the beam from the center of the target is 1 cm. At what distance from the center of the target will the electron beam be stopped and turned around? What will happen if the initial kinetic energy of the electron beam is 10 keV?
When writing or speaking about reactance, how do we distinguish inductive reactance from capacitive reactance. How are resistances, inductive, and capacitive reactance treated in calculations of AC voltage and current.
What is the highest frequency of a triangle wave of 20V peak-to-peak amplitude that can be reproduced by an op amp whose slew rate is 10v/s. For a sine wave of the same frequency.
The counter must stop at a value which is defined by using the 8 slide switches. Use the discrete LEDs as the output to validate the counter. The counter should run when a push button ‘run' is being pressed.
Block diagram and equations for control system water fill, Develop a control system to fill a container with water after it is emptied through a stopcock at the bottom
Determine the turns required in each phase of a star connected alternator operating on an 11 kV 50 Hz system if it has a flux per pole of 0.38 Wb, pitch factor of 0.95 and breadth factor of 0.98
with general block diagrams, show how to obtain the following frequencies from a 10 MHz clock by using single flip-flop, modulus-5 counters, and decade counters for 5MHz 2.5MHZ 2MHz 1MHz 500kHz 250 kHz 62.5 kHz 40 kHz 10 kHz 1 kHz
A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. (a) What is the linear attenuation coefficient for this material (b) What is the half-thickness (c) What is the mean-free-path length for 1.25 MeV photons
Assuming that only integer multiples of a unit bipolar transistor having IS = 3 x 10-16A can be placed in parallel, and only a single voltage source, VB, is available (Fig. 4.54), construct the required circuit with minimum number of unit transist..
An LED is rated at VF = 1.6 Volts to 2.0 Volts at IF = 20 mA. What value of series resistance is needed to limit the LED current to 20 mA when this LED is connected to a 32 Volts peak source
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
if you use the sinusoidal waveform to drive the speaker: What change in the sound do you expect to hear when you increase the amplitude of the sinusoidal signal on the function generator
Design a handheld hair dryer with the following specifications and realistic constraints: 1. It uses a 60 Hz, single-phase, 120 V r.m.s sinusoidal voltage source. 2. It has three settings low, medium, high.
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