Engineering, 17.10.2019 20:20 xojade

Anew battery’s voltage may be acceptable (a) or unacceptable (u). a certain flashlight requires two batteries. batteries will be independently selected and tested until the flashlight turns on. suppose that 90% of all batteries have acceptable voltages. let y denote the number of batteries that must be tested. a. what is p(2)? b. what is p(3)? [hint: there are two outcomes that result in y=3] c. to have y = 5, what must be true of the fifth battery selected? list the four outcomes for which y=5 and then determine p(5).

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

Answers: 3

Answer

Engineering, 04.07.2019 18:20

Atank with constant volume contains 2.27 kg of a mixture of water phases (liquid-vapor). in the initial state the temperature and the quality are 127 °c and 0.6, respectively. the mixture is heated until the temperature of 160 oc is reached. illustrate the process in a t-v diagram. then, determine (1) the mass of the vapor in kg at the initial state, (2) the final pressure in kpa.

Answers: 3

Answer

Engineering, 04.07.2019 18:20

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor

Answers: 3

Answer

Engineering, 04.07.2019 19:10

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false

Answers: 3

Answer

You know the right answer?

Anew battery’s voltage may be acceptable (a) or unacceptable (u). a certain flashlight requires two...

Questions