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1. Electrons leave the cathode of a TV tube at essentially zero speed and are accelerated toward the front by 10,000 V potential. At what speed do they strike the screen? Express this value as a fraction of the speed of light.
2. A charge of -4.00μ C is fixed in place. From a horizontal distance of 55.0cm, a particle mass 2.50 x 10^-3 kg and charge -3.00μC is fired with an initial speed of 15.0m/s directly toward the fixed charge. How far does the particle travel before it stops and begins to return back?
3. In the figure to the right, find the magnitude and direction of the electric field at points A, B,C and D. (See attachment for figure)
4. In question 9, calculate the work needed to move a 1.5μC test charge from point B to point D.
5. A 15μ F capacitor is connected to a 55 V battery and becomes fully charged. The battery is removed and the circuit is left open. A slab of dielectric material is inserted to completely fill the space between the plates. It has a dielectric constant of 4.8. What is the voltage across the capacitor plates after the slab is in place?
Attachment:- 11 physics questions.zip
A base stationcellular communicationsystems lossless antenna has a maximum gain of 16 dB (above isotropic) at 1,900 MHz. Assuming the input power to the antenna is 8 watts, what is the maximum radiated power density (in watts/cm^2)
Design a circuit that, given a 2-bit value, will light a LED corresponding to that value. One of four LEDs should be lit for each of the four possible input values (binary 0 through 3).
A rectangular patch has length 13 cm and width 0.8*13 cm and is supported by a dielectric substrate with relative permittivity 4. What is (approximately) the resonance frequency (in GHz) of the patch antenna
Use a 74LS283N Adder chip and a 74LS86N XOR chip. Simulate the circuit in Multisim and test enough input combinations that you are sure the circuit is working properly. Make sure you test in all theranges of numbers that are possible.
in spite of the standards and programs in place for us electric infrastructure such as the ineel nerc programs it
desgin a BJT amplifier that is balanced in while having a single ended output. The differential gain is 20dB= 10 V/V, and CMRR is 40dB = 100 V/V. Beta is 100 and ro = 50kohm. use dual power supplies +Vcc and -Vee.
Determine the phase angle between the inverter fundamental voltage,VC1, and grid side voltage such that the power delivered to the grid is 10 kW and the fundamental current leads VS by 150°. Calculate the reactive power to the grid and draw the ph..
2) If a 0-20V voltmeter has an accuracy of 1 percent full scale, between what limits may the actual voltage lie when the meter indicated 12V? What is the range of error for this reading?
Determine the volumes of each of these semiconductors that will on avg contain one hole. The intrinsic carrier concentrations are ni=1.02*10^10 cm^-3,ni= 2.1*10^ cm^-3, and 10^-7 cm^-3.
If the power of a 500-kHz transmitter is increased from 150 W to 300 W, what would be the percentage change in field intensity at a given distance from the transmitter. What would be the decibel change in field intensity.
Block diagram reduction technique find closed loop transfer function of the system whose block diagram - determine transfer function using Mason's gain formula and given parameters.
Construct a matlab program to import the data from Excel (data1.xls), calculate the theoretical weight of each layer of block for a pyramid and indicate which layer's weight does not math the measured value within a tolerance of %10
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