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1. What are three basic laws of geometric optics?
2. Proof refraction law by using Fermat's principle.
3. Two flat mirrors have an angle 45 deg. Please find the number of images in this case.
4. The height of a person is 1.8 m. To get a full image of this person, what is the minimum size of a flat mirror?
5. Looking into the bowl of a spherical shape soupspoon, a man standing 25 cm away sees his image reflected with a magnification of -0.064. Determine the radius of curvature of the spoon.
6. A car has a convex front mirror with a radius of curvature 2 cm. If a second car has a size of 3 m and is 10 m behind this car, calculate: a. The size of the imageb. Real or virtual image?c. Erect or inverted?
If an excess of holes is introduced into the center describe in words (and what a sketch would look like) of the minority carrier distribution after a time roughly about equal to the minority carrier lifetime
A 250hp, 500v dc shunt motor draws a nominal field current of 5A under rated load. The resistance is 90ohms. Calculate the ohmic value and power of the series resistor needed so that the field current drops to 4.5A
What Is the Concept of Dual beam CRO?
por uma secccedilatildeo transversal de um fio de cobre passam 20c de carga em 2 segundos. qual eacute a intensidade da
A 100-L rigid tank contains nitrogen (N2) at 900 K, 6 MPa. The tank is now cooled to 100 K. What are the work and heat transfer for this process?
A pulse is used to measure the frequency response of a system. Since we expect the frequency response to extend to 20 kHz, select a pulse whose magnitude spectrum is constant within 1% out to 20 kHz.
determine a small signal parameter gm,rpi of a transistor with parameters betta = 180 for bias current of I sub cq = 0.5mA
A three-phase 5 hp, 208 V motor has an efficiency of 92%, and a power factor of 0.87 (lagging) when it runs at full power. Calculate the motor phase currents and line currents if the motor is wye connected, and delta connected.
Determine the net receiver gain for an AM receiver with an RF input signal power of -87 dBm and an audio signal power of 10dBm
A liquid level system converts a 4-10 m level into a 4-20mA current. Design a three mode controller (PID im assuming) that outputs 0-5 volts with 50% PB, 0.03 min integration time, and 0.05 min derivative time.
Incremental Update. Typically, after every hop at least one packet header field (e.g., a packet's time-to-live field) needs to be overwritten. Because the checksum is a simple complement of a 1s complement sum, it turns out that when, for instance..
2) A device that responds to a small current or voltage change by activating a mechanical switch allowing a larger amount of current flow is 3) Where does a program transfer to when an interrupt occurs Interrupt vector table Interrupt service ro..
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