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A locomotive accelerates a 24-car train along a level track. Every car has a mass of 4.6 x 104 kg and is subject to a frictional force f = 177v, where the speed v is in meters per second and the force f is in newtons. At the instant when the speed of the train is 25 km/h, the magnitude of its acceleration is 0.15 m/s2. (a) What is the tension in the coupling between the first car and the locomotive? (b) If this tension is equal to the maximum force the locomotive can exert on the train, what is the steepest grade up which the locomotive can pull the train at 25 km/h?
The ATSC broadcast television system used in the US transmits video signals at an average rate of 18.34 Mbps and employs 8-VSB modulation.
Calculating a DC Current through the telephone handset, A telephone handset has a resistance of 600 ohm. It is connected to the local telephone exchange at a distance of 5 km by a twisted pair that has a loop resistance of 200 ohm per km
An electric heating element is connected to a 110 v circuit and a current of 3.2 A is flowing through the element. How much energy is used up during a period
What RF bandwidth is required to send the data using QPSK? If the RRC filters in the transmitter and receiver are replaced with ones that have ? = 0.20, what are the new RF bandwidths in parts (a) and (b)?
The basic column control system shown in Figure is somewhat more complicated than the basic neutralizer control system
A filter has the following characteristics: Attenuation is 0 dB from 0 Hz to 2.5 kHz. Phase angle decreases linearly with increasing frequency above 2.5 kHz. Above 5 kHz the filter has steadily increasing attenuation.
If we have a 600ohm transmission line terminated with a 1200ohm resistor, how long must the transmission line be if the input impedance is purely real?
Invesitagtion of Intermodulation through an amplifier, An amplifier is designed to handle frequencies around 9 GHz. The bandwidth of the amplifier is 2 GHz with a center frequency of 9 GHz
Simplify the following circuit. Line A goes into an INVERTER, then into a NAND Gate, then into an OR Gate, then travels into another NOR Gate.
The river estuary is tidal causing the surface level of the water to rise and fall. At certain times of day, reflections from the water surface cause deep fading of the received signal.
Explain the following terms; (i) critical radius of insulation. (ii) economic lagging thickness.
And how long it will take to reach that temperature assuming no heat lost in the process and comments on your results and may research the properties of nichrom wire to determine the resistivity of the wire
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