Compare the cost of using electricity and natural gas

Assignment Help Electrical Engineering
Reference no: EM13266303

The temperature of water in a 25 gallon water heater is supposed to be raised from 60 deg F to 125 deg F. Compare the cost of using electricity and natural gas to heat the water. The following information is useful:
1 gal of water = 8.35 pounds
Price of electricity = $.0866/kWh
Price of natural gas= $.74608/ therm
1 therm = 100,000 BTU

Reference no: EM13266303

Questions Cloud

Compute the molar mass of a gas from knowledge : Starting from the ideal gas equation, show how you can calculate the molar mass of a gas from knowledge of its density.
Draw logic circuit for the function f using and and or gates : Assume dual rail logic. Dual rail logic means that both a variable and its complement are available as inputs to the logic block, such that an inverter is not needed to generate B' from B.
Determine the mass of the lead : A block of wood, with density 780 kg/m3 has a cubic shape with sides .0330 m long. What is the mass of the lead
Explain if an ideal gas is expanded reversibly : If an ideal gas is expanded reversibly, the heat absorbed qrev, can be expressed by the differential dqrev = Cv dT + P dV, Where Cv is a constant (called heat capacity at constant volume). Show that dqrev is an inexact differential.
Compare the cost of using electricity and natural gas : The temperature of water in a 25 gallon water heater is supposed to be raised from 60 deg F to 125 deg F. Compare the cost of using electricity and natural gas to heat the water.
How would you describe each mans probable view on csr : How would you describe each man's probable view on corporate social responsibility and compare and contrast their speeches to the shareholders.
Find the wavelength of the standingwave you create in string : You have a string with a mass of 0.0133 kg. You stretch the string with a force of 9.81 N, giving it a length of 1.87 m. find the wavelength of the standing wave you create in the string
Define the general gas constant and n is the number of moles : For an ideal gas the pressure P, the volume V and the temperature T are related by the ideal gas equation of state, PV = nRT, where R is the general gas constant and n is the number of moles. Consider V as a function of T and P and show that dV is..
Calculate the current market value of the factory : A factory will generate an expected cash flow of $650,000 one year from now. After that, yearly expected cash flows from the factory will grow by 4% per year in perpetuity. The OCC for these cash flows is 11%.

Reviews

Write a Review

Electrical Engineering Questions & Answers

  Find unit vector in direction of a in spherical coordinates

Two points are given in Cartesian coordinates as P1 (0,0,1) and P2 (2,1,,3). vector A connects p1 (tail) to p2 [head). Find the unit vector in the direction of A in spherical and cylindrical coordinates.

  What is the time response

What is the time response

  What is the probaility of error if interference i is there

Consider a digital communication system in which the received symbol y is equal to : y = x+I+n, where n is AWGN with variant sigma_n^2, I models interference independent of both x and n and x is the data taking values +A and -A.

  Design an active integrator circuit to integrate the signal

A magnetic pickup coil is being used to make measurements which areproportional to the time derivative of the magnetic flux density, dB/dt. You wishto integrate this signal to get the magnetic flux density, B.

  Express f as a minterm expression and as maxterm expression

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..

  Determine the approximate drag coefficient of the train

The air density is 1.23 kg/m^3. If the rolling frictional force is determined to be 47,500 N and the power required to sustain the current velocity is 4.681 MW, determine the approximate drag coefficient of the train

  Minimize the next state equations using karnaugh maps

Design a synchronous circuit that implements a 4-bit decade (modulo-10) counter  (0000,0001, ..., 1001, 0000,...) a. Fill in a transition table (using don't cares for undefined next states).

  Find the value for the required q for the second filter

1. Draw the frequency spectrum at the output of the first balanced modulator. 2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier.

  How will bjts current gain and breakdown voltage be changed

Consider a PNP BJT optimum designed for low voltage high current gain. (a)  Draw energy band diagram with proper labeling with VCB= -0.7V, VEB= 0.7V. Which mode is the BJT operated in (b)  Plot excess minority charges stored in each region with pro..

  Find the kw-ruling and the overall efficiency of rate

An electric kettle needs six minutes to boil 2 kg of water from the initial temperature of 20"C. The cost of electrical energy required for operation is 12 paise, the rate being 40 paise per kWh.

  How much energy does the battery deliver over 38 hr inteval

a 1.5 V battery will deliver 9mA for a continuous 38 hrs. during that time the voltage drop will be from 1.5 to 1.0 V. Assume the voltage drop is linear. How much energy does the battery deliver over the 38 hr interval

  Estimate the optical generation rate of ehps per second

(a) A Ge bar 0.1 cm long and 100 m2 in cross-sectional area is doped with 1×1017 cm-3 gallium. Find the current at 300 K with 10 V applied. (b) Upon a steady illumination uniform excess carriers are generated in the Ge bar.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd