Numerade

Questions asked

BEST MATCH

Where the transformer protection method is both primary and secondary, overcurrent protection for the primary of a transformer cannot exceed 133 amperes. Using insulation type XHHW for wet location, what is the minimum size copper feeder conductor permitted for this installation?

View Answer

BEST MATCH

page 7. (a) Define the following terms: (i) phenotype [2] (ii) epistasis [2] (iii) locus [1] [5] (b) Draw a labelled 'ladder' diagram clearly showing the molecular arrangement of the individual components, represented by appropriate simple shapes, that make up the structure of the DNA molecule. [5] (c) There are three varieties of Labrador dogs; black, chocolate, and yellow. Some yellow Labradors have black noses and some have brown noses. The overall appearance is determined by fur colour, black or brown and skin colour, black or brown, as follows: \begin{tabular}{|l|l|l|} \hline Variety & Fur colour & Skin colour \\ \hline black & black & black \\ \hline chocolate & black & brown \\ \hline yellow - black nose & brown & black \\ \hline yellow - brown nose & brown & brown \\ \hline \end{tabular} The allele for black fur (B) is dominant to the allele for brown fur (b) and the allele for black skin (R) is dominant to the allele for brown skin ( $ \mathbf{r} $ ). (i) Draw a genetic diagram to illustrate a cross between a black Labrador genotype BbRr and another black Labrador with the same genotype BbRr. Give the phenotypic ratio for the black, chocolate and yellow offspring produced. Genetic diagram should show all steps. (ii) A dog breeder has a chocolate female Labrador and would like to use this female to produce only chocolate pups. State the genotype of this female Labrador the breeder should use to produce only chocolate pups. [1] (iii) State the genotype of the only variety of Labrador that if bred with the same variety, will always produce pups with the same phenotype as both parents. Total 20 marks END OF PAPER The University of the West Indies Course Code BIOL 0200 April/May 2018

View Answer

BEST MATCH

7. How would you modify the biting-preference assay so that human smell was the only variable that differed between the human and non-human (guinea pig) choice?

View Answer

BEST MATCH

Which method(s) of DNA transfer between bacteria are direct method(s) of transfer? a) conjugation b) transformation c) transduction d) Mutations

View Answer

BEST MATCH

Solve the triangle ABC. a=2.3 b=3.6 c=5.7 Find the unknown angle C, the angle opposite side c. C= (Round to the nearest tenth as needed.) Find the unknown angle B, the angle opposite side b. B= (Round to the nearest tenth as needed.) Find the unknown angle A, the angle opposite side a. A= (Round to the nearest tenth as needed.)

View Answer

BEST MATCH

There are 20 products in a set, and 4 of them are defective. 3 products are randomly chosen for checking their quality. What is the probability that a. all products are defective. b. neither of the products are defective. c. at most one of the products is defective

View Answer

BEST MATCH

Use the information below to answer the following question(s). Cape May Realty manages rental beach properties during the summer season for property owners. They would like to determine if a relationship exists between the square footage of beach property and the weekly rental rates during the summer season. Simple regression analysis was performed using a random sample of beach properties with the results shown below. The percentage of the variation in weekly rental that is explained by the square footage of the property is ________. Group of answer choices 22.45 52.58 47.38 15.99

View Answer

BEST MATCH

8. On January 2, 2019, H Inc issued 1,000,000 of its 8%, 5-year bonds payable. The bonds pay interest semi-annually on June 30th and December 31st. The bonds were issued to yield 10% (the market rate for such bonds.) (20 points) You are to use the following present value factors: 4%, 10 years Present Value of $1 Present Value of Ordinary Annuity 8%, 5 years 0.6756 8.111 5%, 10 years 0.6806 3.993 10%, 5 years 0.6139 7.722 0.6209 3.791 INSTRUCTIONS: a. Determine the issuance price of the bonds. b. Prepare the journal entry for the issuance of the bonds on 1/2/19. c. Using the effective interest method to amortize any discount or premium on the bonds, prepare the 12/31/19 journal entries to record the 2019 interest expense. d. Prepare the journal entry for the retirement of the bond at maturity on 1/2/24. 9 On Janus 400

View Answer

BEST MATCH

Water vapor flows through a thin-walled tube, 80 m long and 0.15 m in diameter. The tube passes through an environment at 10 degrees Celsius. The average temperature of the outer surface of the tube is 160 degrees Celsius. If the combined heat coefficient on the outer surface of the tube is 20 W/m^2*K, calculate: A. The heat rate of the steam lost through the tube in Watts B. The thickness of the fiberglass insulation (k = 0.035 W/m*K) necessary to save 85% of the heat lost without insulation. Consider that the surface temperature of the tube is kept at a constant temperature of 160 degrees Celsius and the surface of the insulator acquires a temperature of 13 degrees Celsius. C. The annual cost of the energy lost if steam is generated in a boiler that uses natural gas as fuel, with an efficiency of 75% (boiler efficiency = q_vapor / q_gas). The price of natural gas is 0.52 per therm (1 therm = 105,500 KJ). Calculate the annual cost for the pipe without the insulation. D. Same calculation as part C but including the insulation.

View Answer

BEST MATCH

Python question here: Write a program which asks the user to enter their first name and outputs an appropriate message depending on whether their name ends with the letter 'n' or not. The ending letter needs to be treated in a case-insensitive manner. Your program needs to pass all the tests in order to gain the mark. Hints: - Handle any extra spaces in the input data. - Notice the difference between how the name of the first user is entered and displayed. Which string method do you need to achieve that? - You can either use two string methods and an index to access the last character, or three string methods, one of which tests the last character. - One of the tests used is not shown. - The user might have a double-barreled first name such as Mary Jo, and so the last letter will be 'o' in that case. For example: Input: Mary EVELYN Please enter your first name: Mary EVELYN Hi Mary Evelyn, your first name ends with the letter 'n'. Input: John Please enter your first name: John Hi John, your first name ends with the letter 'n'. Input: Tomsk Please enter your first name: Tomsk Hi Tomsk, your first name does not end with the letter 'n'.

View Answer

devon e.