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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 DC motor has an input of 0-5V and runs at speeds from o to 80 rpm. What duty cycle signal is required to run the motor at approximately 20 rpm
Shows an RC circuit with input voltage x (t) and output voltage y(t). The RC circuit is to be used as a low-pass filter - The value of the capacitor used in the design should be as small as possible.
A uniform (constant) volume charge density RHOvo [C/m^3] exists inside of a cylinder of radius a and height h. The cylinder is centered at the origin, with the cylinder axis running along the z axis.
A sample has a T1 of 0.8 seconds. The net magnetization from the sample set equal to zero and then allowed to recover towards its equilibrium value. After 1.0 seconds, what fraction of the equilibrium magnetization value will be present
Design an active first-order RC low-pass filter (using a 741 op-amp) with a cut-off frequency of 10 kHz and a band-pass gain of 20 dB. Derive the step response and voltage transfer function.
In a game, half of the (large) pool of potential opponents are beginners, a third intermediates, and one sixth are masters. Your chances of beating them are 60% for beginners, 30% for intermediates, and 10% for masters.
find the transfer function and resolution for a 10-turn, 4.7k potentiometer with 3450 degrees of rotation and a 0 to 5 volt output. calculate the resolution in ohms per volt
Find the stall current, max speed in rotations per minute (RPM), and armature current at a speed of 480.769 radian/s (4591.006 RPM). Discuss the relationship (if any) between the armature current at max speed
List three standard socket calls that you would expect every connection-oriented server to invoke that would not normally be invoked by any client. Briefy indicate why a typical client would not need to invoke these calls.
The feedback system for the Buck circuit can be analyzed by separating DC component from small signal perturbation. The performance of the feedback can be assessed by examining the Bode plot of the loop transfer function GL(s).
The voltage across a 1-µF capacitor is given by v(t)=100 e-100t . Find expressions for the current, power, and stored energy. Sketch the waveforms to scale versus time.
draw a digital design consisting of 2 input AND gates and three inverters, where an inverter is connected to each of the AND gates input and its output. For each of the four possible combinations inputs applied to the two primary inputs.
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