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Using the items that make up a science class magnet (wire, a nail, and a small dry cell battery) as examples, explain the factors that affect the strength of a magnet. •Your goal is to make the strongest magnet possible. Using the science class magnet materials again, describe what changes you would make to the magnet construction to make the magnet as strong as possible while keeping the assembly as small as possible. •Include the advantages and disadvantages of the changes you recommend.
a voltage divider is required to produce a 5.5V output from a 12V source. if one of the resistor values is 1.0k, what value is required for the second resistor so that the voltage across the 1.0k resistor is 5.5V
Message signal m(t) = 0.6sin(27r3000t + pi/9) For a carrier signal with amplitude Ac = 4,fc = 40MHz, answer the following. What are the expressions for the transmitted signals in part a Find the transmitted power for each signal in the part a
A single-loop negative feedback system has the loop transfer equation: L(s)=Gc(s)G(s)=K(s+2)^2 / (s(s^2+1)(s+8)) a. Sketch the root locus for 0 K infinity to indicate the significant features of the locus. b. Determine the range of the gain K for whi..
A solid spherical conductor of radius a is surrounded by a concentric spherical conducting shell of inner radius b and outer radius c. The region between the conductors, a
Design a two-pole low-pass Butterworth active filter using a unity-gain section to achieve a 3-dB frequency of 200 Hz. Select the two filter resistances as 30 kOhms each.
Identify the steps involved in the delivery of a letter from the sender to the addressee. How are these steps similar to OSI layers' functions such as addressing, routing, resource sharing, error checking, and connectionless vs. connection-oriente..
A perfect electric dipole is directed along the z-axis. Inconventional spherical polar coordinates, at what values of the"dangle angle" q does the electric field have no z-component
1. What is the difference between discrete system and digital system. 2. What is "baseband modulation"? What types of baseband modulation are there. 3. How does time division multiplexing work? What factors affect how many channels you can transmit.
Let x[n] be a signal and let y[n]=Σx[m], where m is from -∞ to n. If Y(jΩ) =cos2Ω, x[n] consists of exactly four impulses. What are their numerical strength and locations
Interface binary Input Output devices to the microcontroller
Design a continuous time system to generate output y(t)=sin(wt)u(t) when the input is a unit step function. Specify the system using a differential equation.
b unit vector a θ dotted with unit vector a y (dotted means dot product) θ is from spherecial coordinates and starts from the postive z direction c unit vector a r crossed with unit vector a x (crossed means cross product).
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