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1. A lightning bolt strikes an airplane with 30 kA for 2 ms. How many coulombs of charge are deposited on the Plane?
2. A 1.8- kW electric heater takes 15 moin to boil a quantity of water. If this is done once a day and power costs 10 cents/kWh. What is the cost of its operation for 30 days?
3. A utility company charges 8.5 cents/kWh. If a consumer operates a 40-W light bulb continuously for one day, how much is the consumer charged?
4. A 1.2-kW toaster takes roughly 4 minutes to heat four slices of bread. Find the cost of operating the toaster once per day for 1 month(30 days). Assume energy costs 9 cents/kWh.
Determine the N-point DFT X[n] of the N-point sequence x[n]=sin(ωon), 0≤n≤N-1, for ωo ≠ 2∏r/N, where r is an integer in the range 0
A certain antenna has a radiation resistance of 51 ?, and an ohmic (loss) resistance of 10 ?. If a current of 2 A is driving the antenna, calculate the following: a) the power radiated. b) the power lost due to heat.
a. A WLAN uses the 1-Mbps IEEE 802.11 infrared standard and the 16-PPM modulation scheme. Compute the period of transmission (time between bits). b. What is the average time between pulses (1 values) and the corresponding average rate of pulse tran..
A three-phase, 60Hz, wye-connected synchronous generator has balanced line-to-line voltages of 480V at its terminals. The generator is supplying power to two balanced and delta connected, three-phase loads. the first load is made up
suppose that data are stored on a 1.4-mbyte floppy diskettes that weight 30 g each. suppose that an airliner carries
A mixture consisting of 0.100 mole N2, 0.050 mol O2, 0.200 mole CH4, and an unknown amount of CO2 occupied a volume of 11.1 L at 27°C and 1.00 atmpressure. How many moles of CO2 are there in this sample
Each of three coins has two sides, heads and tails. Represent the heads or tails status of each coin by a logical variable (A for the first coin, B for the second coin, and C for the third) where the logical variable is 1 for heads and 0 for tails..
A spherical capacitor is formed from two concentric spherical conducting shells separated by vacuum. The inner sphere has radius 10.0 centimeters, and the separation between the spheres is 1.50 centimeters.
assuming k>0 what is steady state the response of the above system due to an input of the form , x(t) = 2sigma(t)+u(t). where sigma(t) denotes unit impulse function and u(t) denotes unit step function
Obtain an expression for the spectrum of an FM signal with single-tone modulation where the carrier amplitude is Ac, the carrier frequency is Fc, the message frequency is fm and the modulation index is B (beta).
assume that the passengers arrive at a taxi stand according to a poisson process with parameter lambda. there are m
Consider a 3 phase, 2 pole induction machine. Neglect the stator windings resistance and the leakage inductance. The rated voltage is 208 V (line-line, rms) at 60 Hz. Lm=60 mH, and the peak flux density in the air gap is 0.85T.
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