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Alfredo deDarke sleeps with a 7.5-Watt night light bulb on. He turns it on before getting in bed and turns it off 8 hours later.a. Determine the amount of energy used during one evening in units of kiloWatt*hours.b. Electrical energy costs 13 cents/kW*hr where Alfredo lives. Determine the annual (365 days) cost of this practice of using a 7.5-Watt night light.c. Determine the annual savings if Alfredo replaced his 7.5-Watt incandescent night light by a 0.5-Watt LED night light.
Consider a BPSK signal where each bit is represented by a triangular pulse with width T and height A. What is the "energy per bit" for this BPSK pulse with A=1V and T=0.002s
A positron (same mass as electron) moving at .8c collides head on with a stationary electron producing two photons with EQUAL ANGLES relative to the incoming positron. Find the photon energies, wavelengths and angle
Write a 68000 assembly program to subtract two strings of A15 ASCII characters. The first string is stored starting at $502030. The second string is stored at location $302510. The ASCII character in location $502030 of string 1
Pulse width modulation (PWM) is used to control dc voltage to an electric heater. The supply voltage is 12 Vdc, and the heating element is modeled as a 1 resistance. (a) Calculate the average power delivered to the heater when the voltage is switche..
use the method of recursion to solve the following problems: compute y[n] for n = 0,1.2, when x[n] = 0 for all n andy[-l] = 2. Compute y[n] for n = 0,1.2, when x[n] = u[n]and y[-l] = 0. Compute y[n] for n = 0,1.2, when x[n] = u[n]and y[-l] = 2.
in the process of sampling an analog signal g(t) is multiplied by a periodic train of rectangular pulses c(t)each of unit area ,given that the pulse repetition frequency of this periodic train is fs and the duration of each rectangular pulse is T
The transfer function of a system is given below. Find its impulse response in n-domain. Hint: First expand using partial fraction expansion and then perform its inversion using z-transform tables H(z) = 1/(z-0.5)(z0.5)
One system has a cpu a tdp of 125w and one has a 67w tdp. 125W System has 10 times bigger copper heatsink and blows 3 times more volume of air than the system of 67w. The 125w system reads 55C max CPU core temperature.
Write the difference equation for a four-term moving average filter. The input cos(n/3)u[n] is then passed through the four-term moving average filter. Solve for the first 5 samples of the output.
A 460-V, three-phase,60-Hz system supplies power to a 10-kVA, delta-connected resistor load; a 50-kVA, 0.86 power factor induction motor, and a wye-connected synchronous motor that is operating at 0.62 power factor leading
The system has total capacitance CT = 1.0 muF (10 ^ 6 Farad) and average frequency in use at 10kHz. The transformation of battery power to power inn the microcontroller and additional components occurs with virtually no losses.
What is the data rate of a digital electrical communication system that uses 16 voltage levels to carry multiple bits with one voltage level, where each voltage level is kept at that level for a duration of 2 ms
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