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A spaceship moves at a speed of 0.85 c away from theEarth. It shoots a star wars torpedo toward the Earth at aspeed of 0.80 c relative to the ship. What is the velocity ofthe torpedo relative to the Earth?
A rectangular chip has a top surface of 0.5 cm by 2 cm cooled by air at 20 oC with h = 150 W/m2.K. There are also 16 connector pins, 1 mm wide, 0.5 mm thick, 6 mm long and k = 60 W/m.K attached to a circuit board at 30 oC.
In a typical AC circuit, the supply voltage is 10 VPK and frequency is 60 Hz. If the current through the system is 2 APK with a phase angle of 60o, then the power dissipated by the source is
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).
In a certain system, an electrical heating element was found to increase the temperature of a piece of metal 7o for each amp of current. The metal expands 0.004 in./deg and pushes on a load sensor that outputs 1 V/0.003 in.
How do the short length and medium length transmission line models differ and why Draw the equivalent circuit of a medium-length transmission line
Tones Input In To An Amplifier, Suppose two tones are input in to an amplifier. The tones are pure sinusoids with one at frequencies 8GHz and the other at frequency 8.03GHz,(delta f =0.03GHz).
Sketch the theoretical torque vs. speed characteristics for a series, shunt, and compound connected DC motor. Describe what will happen if a series motor is run under no load conditions. describe what will happen if a shunt motor experiences a lo..
A line has an inductance of1.25mH/km with an impedance angle of 70 degree , and a capacitance to neutral of 0.01mF/km. Calculate its reactance and series impedance per unit length at 50Hz. Calculate the line admittance per unit length
An engineering statistician wants to conduct a test to determine if there is a difference in the compression strength of two different manufactures of reinforced concrete columns.
Determine the Voltage across the electrical model of a cell membrane in a nerve cell
a cost to produce, P, of $4.00. If we were able to reduce this to $3.55 through greater attention in the design, and if the cost to improve the design (in NRE) is $35,000, how many units must we sell to recover the increased design cost
A 1,000 kVA, 3,200V, single phase 60Hz, 24 pole alternator/generator has an stator winding re-sistance of 0.1 ohm from line-to-neutral. The rotor is not a permanent magnet but a separately pow-ered electromagnet (field windings)
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