Numerade

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Question Seven (Fatigue) A steel tensioning device is subject to a tensile load of 45 kN which fluctuates by plus and minus 20%. Details of the material are shown below. All dimensions are in millimetres. a) Ignoring the effect of the threads and the flat, calculate the Fatigue Strength Reduction Factor Kf for the material at the shoulder. b) Ignore your answer in part a above. Take Kras 1.6 and the surface finish factor as 1.3, calculate the safety factor for the component using the Soderberg Criteria. Ultimate 550 MPa Yield 300 MPa Endurance 250 MPa

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Question 1 The reagent NaBH$_4$ acts as an $\boxed{hydride}$ delivery agent. In a reaction with NaBH$_4$ and methanol, the carbonyl (C=O) carbon atom of a ketone is $\boxed{reduced}$ to give $\boxed{secondary \ alcohol}$ product.

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Which condition is a failure of the opening between the two atria to close? Patent foramen ovale Cardiac tamponade Heart murmur Angina pectoris

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The process of fermentation occurs in the absence of what? O water carbon dioxide O oxygen O sugar

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Financial planning takes place in a dynamic economic environment created by the actions of the government, business, and consumers. True False

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2. Give the form of a (real-valued) particular solution for each ODE. Do not solve for the coefficients. [4] a) y'' + 25y = x² + 6 sin(5x) [4] b) y'' + 4y' + 4y = -7(x + 1)e^(2x) [4] c) 2y'' + y' - 10y = xe^(2x) cos(x)

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Problem 3: For the differential equation solved in Problem 2, will any specific values of C1 and C2 cause the solution to converge to zero as ? Yes or no? Explain. 5

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Exercise#2: Prime Numbers Write a main() program that: • Calls the function int validateNumber() which reads, validates that a given number is in the range [100, 100000], and returns the number. • Calls the function bool isPrime() which checks whether a given number is a prime number of not. • Calls the function char validateYesNo() which reads, validates that a letter is 'Y', 'y', 'N', or 'n', and returns the letter. • If the function validateYesNo() returns 'Y' or 'y' the program reads and checks another number. Sample input/output: Enter an integer in the range [100, 100000]: 13 Enter an integer in the range [100, 100000]: 534271 Enter an integer in the range [100, 100000]: 2537 2537 is not prime Do you like to check another integer? Y for yes and N for no: T Do you like to check another integer? Y for yes and N for no: 5 Do you like to check another integer? Y for yes and N for no: y Enter an integer in the range [100, 100000]: 1999 1999 is prime. Do you like to check another integer? Y for yes and N for no: N

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16. Refer to the following class header: public class Dog extends Animal Which of the following is/are true abour Dog class and Animal class? I. Animal class is the super class II. Dog class is a subclass III. Dog class is considerd a child class of Animal A. I only B. II only C. III only D. I and III only E. I, II, and III 17. What Java keyword is used to set up an inheritance relationship between a subclass and a superclass? A. parent B. extends C. inherits D. subclass superclas E. s 18. Given the following class definitions: class Item{ private int x; public void setX(int theX) { x = theX; } //... other methods not shown } public class EnhancedItem extends Item{ private int y; public void setY(int theY) { y = theY; } //... other methods not shown } which of the following would not compile if it was used in place of the missing code in the main method below that is places in a class other than Item and EnhancedItem? public static void main(String[] args) { EnhancedItem currltem = new EnhancedItem(); A. I only // missing code } B. II only I. currltem.setX(3); C. III only II. currltem.setY(2); D. IV only III. currltem.x = 3; III and IV IV. currltem.y = 2; E. only

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In MS-Excel, which of the following is an absolute cell reference? a. #a#1 b. !A1 c. $A1 d. $A$1

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pilar d.