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A woman at point A on the shore of a circular lake with radius 2 mi wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can walk at the rate of 4 mi/h and row a boat at 2 mi/h. How should she proceed?
A 10kW 220-V single-phase motor is operating at 0.7 lagging power factor. Find the value of the capacitor that needs to be connected in parallel with the motor , if the power factor is to be improved to 0.95 lagging.
A generator uses a coil that has 110 turns and a 0.475 T magnetic field. The frequency of this generator is 43.0 Hz, and its emf has an rms value of 230 V. Assuming that each turn of the coil is a square (an approximation), determine the length of..
the upper critical frequency of anop-amps open loop response is 200Hz. If the midrange gain is 175,00, what is the ideal gain at 200Hz? what is th actual gain? what is the op-amps open loop bandwidth?
The probe band limited signal with fmax= 1Mhz was transmitted during the time T0=2 minutes. a) Find the maximum number of samples (N) that can be sent through the channel during T0 without losing of information. b) Find the sample rate (samples/s)
The particle moves through one-quarter of a circle in a time of 2.30E-3 s, at which time it leaves the field heading due south. All during the motion the particle moves perpendicular to the magnetic field. What is the magnitude of the magnetic for..
he sensor to be used has a transfer function of ? Q volts, where Q is in gal/min, and an output impedance of 2.0 k?. Tests show that the output of the sensor has 60 Hz noise of 0.8 V rms. Design a signal-conditioning system, including noise filter..
If it takes 3.52 s for 10.0 mL of helium to effuse through a hole in a container at a particular temperature and pressure, how long would it take for 10.0 mL of oxygen, O2, to effuse from the same container at the same temperature and pressure
a) Determine thecurrent through each element and the total power taken by thes eries combination and the power factor of the combination. b) Using the supply-voltage phasor as the reference, sketch a phasor diagram forthe circuit.
desgin an 8-bit 2' complementer using sequentail circuit . you may use one register to store the data to be complemented, one register to store the complemented data, one half adder and one D-flip flop with other gates/registers
1- Describe how the MOSFET acts as a switch. What could bedone to make the MOSFET ON when the square wave is negative and OFF when the square is positive 2- How is the magnitude of the control voltage determined
The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 322 Hz less than the emitted frequency. Calculate the speeder's speed with respect to the ground.
Unpolarized light is incident on three polarizers: The first making an angle of 0 degrees with the vertical; the second making an angle of degrees with the vertical; and the last one making an angle of 90 degrees with the vertical.
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