Numerade

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Evaluate the integral: \int_0^(\infty ) 6xe^(-x^(2))dx a) Diverges b) Converges to 12,\int_0^R 6xe^(-x^(2))=6(e^(-x^(2)))/(-2x)-6(e^(-x^(2)))/(4x) c) Converges to 3 6xe^(-x^(2)) d) Converges to 6 -6(e^(-x^(2)))/(-2x) 6(e^(-0^(2)))/(-2)-6(e^(-0^(2)))/(4(0))-6(e^(-\infty ))/(-2)-6(e^(-\infty ))/(-40) e) None of the above answers (e^(-x^(2)))/(4x),(6(1)/(-2)-6(1)/(0))-1-6(0)/(-2)-6(0)/(\infty )

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22 Question 1 of 40 - / 2.5 View Policies Current Attempt in Progress The major reporting standard for presenting managerial accounting information is Select answer from the options below generally accepted accounting principles. the current tax law. the cost principle. relevance. Save for Later Attempts: 0 of 1 used Submit Answer

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Which of the following two parameters were analyzed to see the effects they have on conduction through a material? Cross Sectional Area, Thermal Conductivity Cross Sectional Area, Length Length, Thermal Conductivity Length, Temperature

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2. The substrate concentration in a batch bioreactor is maintained at a constant concentration of 5 kg/m³ by continuous addition of substrate. The volume of the liquid is not altered by this addition and growth can be expressed by Monod kinetics and death of microorganisms is negligible. Data: Maximum specific rate of substrate uptake, $q_{s,max} = 0.6$ kg substrate/kg cells-h Inoculum concentration, $X_0 = 0.5$ kg/m³ Liquid medium volume, $V = 10$ m³ Yield of biomass on substrate, $Y_{xs} = 0.5$ kg biomass/kg substrate Assume: When $\mu = \mu_{max}$, then $q_s = q_{s,max}$ a) What is the specific growth rate? b) What is the time required to obtain a biomass concentration of 20 kg/m³? c) What is the total amount of substrate consumed during this time? [20 marks]

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240 litres of water per second are supplied to an inward flow reaction turbine. The head available is 12 m. The wheel vanes are radial at inlet and the inlet diameter is twice the outlet diameter. The velocity of flow is constant and equal to 1.85 m/sec. The wheel makes 380 rpm. Find(i)Guide vane angle (ii) Inlet and outlet diameter of the wheel (iii) The width of the wheel at inlet and exit. Assume that the discharge is radial and there are no losses in the wheel. Take speed ratio = 0.7. Neglect the thickness of the vanes.

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The financing section of a cash budget shows expected borrowings and the repayment of borrowed funds plus interest. O True O False

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6. Calculate the Specific Heat Capacity of 55.00g of material which absorbs 1.75kJ of energy to change by 50. °C (5pts)

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The number of parameters in a regression equation, y = 3.2 + 1.2 x1 + 0.4x2 - 2.3x3, is: Ο 2 04 03 01

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A school psychologist is examining the development of children's reading skills from ages 4 to 6 . The psychologist selected three different groups of children from classrooms at Smith Central School, one group for each age. The children are placed in a language skills program aimed at building reading comprehension and phonetic awareness, after which a reading skills assessment test is administered to each child. The test is scored on a 1 0 - point scale. The following data show the results: Results Age 4 Age 5 Age 6 4 1 0 G = 4 3 Ʃ X 2 = 1 9 3 6 4 2 3 5 0 7 2 2 5 2 0 T = 2 5 T = 1 4 T = 4 SS = 1 0 SS = 1 0 . 8 SS = 4 . 8 Use an analysis of variance with a = . 0 5 to determine whether these data indicate any significant mean differences among the treatments ( age groups ) . Remember to 1 ) State the null hypothesis, 2 ) Show all of your calculations, 3 ) Make a decision about your null hypothesis, 4 ) Make a conclusion including an APA format summary of your findings ( include a measure of effect size if necessary ) , and 5 ) Indicate what you would do next given your findings. EXPLAIN STEP BY STEP CALCULATIONS FOR CLEAR UDERSTANDING ON HOW NUMBERS ARE CALCULATED

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The fatigue life of a material is usually expressed in terms of: A) Number of cycles to failure B) Stress amplitude C) Strain amplitude D) Creep rate

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