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Starting from rest, a 4.70-kg block slides 2.10 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436.
(a) Determine the work done by the force of gravity.(b) Determine the work done by the friction force between block and incline.(c) Determine the work done by the normal force.(d) Qualitatively, how would the answers change if a shorter ramp at a steeper angle were used to span the same vertical height?
A 3-phase transmission line series load of 2000MVA, .8 p.f. lag at 735 kv. The ABCD parameters of the line are : A = .8746 =D, B = j128.33Ω, C = j.0018315 (s). Calculate Vs, Is, voltage regulation and efficiency of the line.
The system contains a door sensor, a window sensor, and a key activation switch. If the switch is on, opening the window will set off the alarm immediately. Opening the door will start a 30 second timer.
a- for this modulator a 1-v signal produces a deviation of 20Khz determine the amplitude and phase spectra of s(t) for the modulating signal m(t) = 1.5 cos(2*pi*6*10^4*t) when fc>>fm b- find the bandwidth of the modulated signal using carson's rule..
A glass tube with a cross-sectional area of 9^-2 m^2 contains an ionizd gas. The densities are 10^15 positive ions/m^ and 10^11 free electrons/m^3. Under the influence of an applied voltage, the postive ions are moving.
Important information about Electrical Networks, Engine consumes 5kw of power and a reactive power of 2kvar at current of (3+j2) Amps.
Capacity, Data and Transfer Rates, Access Time of Disk Drive, A hard disk drive has 10 disks and 18 surfaces available for recording. Each surface is composed of 200 concentric tracks and the disks rotate at 7200 r.p.m.
Calculate the instantaneous power absorbed by the resistor, the instantaneous power absorbed by the capacitor, the real power absorbed by the resistor, the reactive power delivered by|the capacitor, the load power factor.
A) Design a low-pass filter with a cutoff frequency of 12 kHz. Use 0.15 uF capacitor and an appropriate resistor. B) Sketch and label the circuit. C) What is the gain of the filter at a frequency of 20 kHz Give your answer both as ratio (Vout/Vin) an..
The respective resistance measurements (from the first bar) are 11.1 kW, 12.1 kW, and 14.5 kW.Find the a) material resistivity and b) contact resistivity, then c) restate the material resistivity as a sheet resistivity.
A 75 lossless line is terminated in error with a 93 resistor. A generator sends 100 mW down the line. (a) What is the SWR on the line (b) What is the reflection coefficient
For random ergodic voltage signal, I make a histogram of sample voltages and note that they form a Gaussian distribution. estimate the following moments over a number of samples taken at diffrent time points alont the voltage signal
A 60-Hz, single-phase transmission line has a length of 80 miles. Its shunt conductance (G) is 3.4A1011 S/mile, resistance (R) is 0.1 OHMS/mile, capacitance (C) is 16 pF/mile, and inductance (L) is 0.56 mH/mile.
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