Numerade

Questions asked

BEST MATCH

Write a proposal for a research project that you intend to do

BEST MATCH

Question 5 (2 points): The following time to failure data were collected from a complex electro-mechanical control system at a process chemical facility. Calculate the mean time to failure (MTTF) as well as the 95% confidence interval around that mean assuming that these failures follow the exponential distribution. Serial No. TTF (days) 1002 70 1006 858 1009 354 1003 318 1010 335 1008 609 1001 49 1012 84

View Answer

BEST MATCH

It is controlled by the neurons, located in the medulla and pons

View Answer

BEST MATCH

Consider the experiment of rolling a fair die twice. The sample space of this experiment is Omega = {(x, y) : x, y in {1, 2, 3, 4, 5, 6}}. From the following random variables find: the image, the function of density, distribution, expectation and variance.

View Answer

BEST MATCH

The scattering cross sections for N and ° for thermal neutrons are 10 and 4.2 barns, respectively. (a) Calculate the macroscopic cross section for air at STP. Air consists of 79 volume percent nitrogen and 21 volume percent oxygen.

View Answer

BEST MATCH

Which of the following is a normal part of human breathing? Check ALL that apply. A. the diaphragm contracts to squeeze air out of the lungs B. air moves into the lungs because of a difference in pressure between the outside air and the inside of the lungs C. air leaves the lungs because of the contraction of the intercostal muscles D. the lungs are also known as the thoracic cavities

View Answer

BEST MATCH

Q2. (a) Starting from dG = VdP - SdT, derive both the Clapeyron equation and the integrated for of the Clausius-Clapeyron equation, which shows how the vapour pressure of a solid or liquid varies with temperature. State clearly any assumption you make. (b) An organic liquid for which the boiling temperature at 1 bar is 410 K has at this temperature an enthalpy of vaporisation of 36 kJ mol?¹. Calculate the vapour pressure of the liquid at 320 K. (c) Given the following vapour pressures as functions of pressure (where P is in Pascals, and T is in Kelvin): Benzene (liquid): $\ln P = -\frac{4108}{T} + 23.225$ Benzene (solid): $\ln P = -\frac{5314}{T} + 27.564$ Calculate: (i) the entropy of vaporisation of liquid benzene at its boiling point at 1 bar. (ii) the entropy of fusion of solid benzene at the triple-point temperature.

View Answer

BEST MATCH

Elemental strontium consists as three major isotopes: $^{86}Sr$ with an accurate mass of 85.91 amu, $^{87}Sr$ with an accurate mass of 86.91 amu, and $^{88}Sr$ with an accurate mass of 87.91 amu. If $^{86}Sr$ is 9.9% of naturally occurring strontium, what is the percent abundance of $^{88}Sr$? Enter your answer numerically to three significant figures.

View Answer

BEST MATCH

Martinez Company's ending inventory includes the following items. Product Units Cost per Unit Market per Unit Helmets 24 $ 52 $ 56 Bats 17 80 74 Shoes 38 97 93 Uniforms 42 38 38 Compute the lower of cost or market for ending inventory applied separately to each product. Inventory Items Units Cost Market Cost Market LCM Applied to Items Helmets 24 $ 52 $ 56 Bats 17 80 74 Shoes 38 97 93 Uniforms 42 38 38

View Answer

BEST MATCH

For the numeric key: 987845369, the key is folded about 845. The addition is performed as: 845 987 369 2201 Thus, the pseudo key would be 201 For the non-numeric key: "AlMcAllister", the key is folded about the second grouping, All1. The addition is performed as: All1 + AlMc A 1 1 i 0100 0001 0110 1100 0110 1100 0110 1001 A 1 M C 0100 0001 0110 1100 0100 1101 0110 0011 S t e r + ster + 0111 0011 0111 0100 0110 0101 0111 0010 1111 0110 0100 1101 0001 1111 0011 1110 Treating this result as a positive 32 bit integer, the pseudo key would be 4, 132, 249, 406. Figure 5.17 Fold-Shifting Key Conversion

View Answer

jeffrey o.