# For my homework, there are two parts to the question. i did part a and I got E= -6.54E-18J. Part A) Calculate the energy (in J) of the photon associated with the transition of the electron in He from n=2

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1. ## Discrete Math

A factory makes automobile parts. Each part has a code consisting of a letter and three digits, such as C117, O076, or Z920. Last week the factory made 60,000 parts. Prove that there are at least three parts that have the same serial number.

2. ## math

A string is cut into two parts.The ratio of lengths of the string and the smaller part is six times the ratio of lengths of the smaller and the larger parts .Find the ratio of the lenghths of the larger and the smaller parts of the string. Help me solve

3. ## Math

The following question has two parts. First, answer part A. Then, answer part B. The following information applies to both parts. Dario purchased a 1-foot long piece of gum, and he decides to share it with 3 of his friends. So, he cuts the piece of gum

4. ## Calculus

Consider the function f(x)=(5^x−1)/x. A) Fill in the table values for f(x): x= -0.1, -0.01, -0.001, -0.0001, 0.0001, 0.001, 0.01, 0.1 f(x)= 1.4866, 1.5866, 1.6081, 1.6093, 1.6096, 1.6107, 1.6225, 1.7462 B) Based on the table values, what would you expect

Whitney wanted to speed up the making of guns by having machines manufacture each part. All machine-made parts would be alike-for example, one trigger would be identical to another. Identical parts would fit together with all other parts, and gunsmiths

6. ## World History

Jews were persecuted in Europe for hundreds of years even before the 20th century (1). Thousands were massacred by crusading knights on their way to the Holy Land (2). Another common practice was to force Jews into sections of town called ghettos (3). In

7. ## connexus Language Arts

I need help can somebody answer? This question has two parts. First, answer part A. Then, answer part B. Part A How is the setting for collecting children’s books different from the setting for selling used books? A. One is inside and the other is

8. ## Early Childhood Education

Appropriate materials and equipment for outdoor play should contain which? 1. a lot of immovable parts 2. some loose parts 3. large,simple,steel units designed for a single purpose. 4. hard,strong surfaces for ground cover Shouldn't the materials and

9. ## World History

Egypt’s recorded history began around 10,000 BC with the Old Kingdom (1). Egyptians had developed a means of writing called hieroglyphics (3). Hieroglyphics used pictographs to convey meaning (3). Which critiques the factual accuracy of the summary? a)

10. ## physics

A 9.3 kg firework is launched straight up and at its maximum height 45 m it explodes into three parts. Part A (0.5 kg) moves straight down and lands 0.29 seconds after the explosion. Part B (1 kg) moves horizontally to the right and lands 10 meters from

11. ## World History

Which option critiques the factual accuracy of the summary? Read the summary. The earliest humans originated in northern Europe (1) and traveled south via land bridges to Asia and Africa (2). As people spread throughout the world, a shift from

12. ## Statistics

I'm stuck on this homework question. If someone can just help get me started with the first one I'm sure I can do the rest. I'm just not sure how to begin. Thanks! 1. A production process produces 90% non-defective parts. A sample of 10 parts from the

13. ## Algebra

This problem has two parts, Part A and Part B. Part A: Use the Remainder Theorem to find the remainder when p(x)=x^3+4x^2+5x+2 is divided by x+1. Part B: Then, use the Factor Theorem to determine whether x+1 is a factor of p(x)=x^3+4x^2+5x+2. Select one

14. ## CHRIST MATH

Divide 20 into 4 parts which are in AP such that ratio between the product of the 1st part and the 4th part to the 2nd and 3rd part is 2:3 find the AP

15. ## World History A

The earliest societies of Mesopotamia believed their rulers had divine right (1). As these societies grew in size, more complex governments and bureaucracies emerged (2). As a result, ancient Mesopotamia became the birthplace of a secular society that

16. ## math

A confectioner has 300 pounds of a chocolate that is 1 part cocoa butter to 7 parts caramel. How much chocolate that is 1 part cocoa butter to 15 parts caramel should be combined with the first in order to create a new chocolate that is 1 part cocoa butter

17. ## math

A wire of length 4 m is cut in two parts and the first part is bent in the shape of a square, while the second part is bent in the shape of an equilateral triangle. For which lengths of these parts the total area enclosed by the square and the triangle is:

18. ## Quantitative, stastics and business

A company has three machines A, B and C which all produce the same two parts, X and Y. of all the parts produced, machine A produces 60%, machine B produces 30%, and machine C produces the rest. 40% of the parts made by machine A are part X, 50% of the

19. ## Mathematics

Tran has made a plan to help him study for his math exam. He has broken the material into two parts: part A and part B. He has only 2 hours over the course of the next week to study, and wants to spend twice as much time studying for part A as for part B.

20. ## history

Read the summary. Catholic reformers began working to rebuild the Church’s power base and neutralize Protestant criticism by convening at the Council of Trent (1). The Council condemned the practice of indulgences, which had made Martin Luther write his

21. ## matha school.alleppey

300 is divided into 2 parts so that half of one part may be less than other by 48.then the parts are?find the linear equation

22. ## Math

Part 1 of the Question: A rectangular field is 120m long and 80m wide. If I walk around the perimeter of the entire field, how far have I walked? Part 2 of the Question: If I wanted to re-turf the field, how much turf would I need to complete the task?

23. ## chemsitry

home / study / questions and answers / science / chemistry / make sure to answer both parts: 1)balance the following ... Your question has been posted. We'll notify you when a Chegg Expert has answered. Post another question. . Question Edit question make

24. ## World History

Read the summary. The earliest humans originated in northern Europe (1) and traveled south via land bridges to Asia and Africa (2). As people spread throughout the world, a shift from hunter-gather to farming occurred (3), which led to increased food

25. ## Math

Graph the equations below accurately. Find the point of intersection of the two lines. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the

26. ## Reiny!!!! math help

We understand how to do the questions now and we are really glad n thankful, but the graphing portion of it is confusing. Continuation of the function. The teacher wants us to plot the points from the different parts of the questions we answered and with

27. ## Ancient history

Read the summary. In 1250 BC, Mycenaean Greeks sailed across the Aegean to launch the historic invasion of Troy in present-day Turkey (1). The ensuing Trojan War inspired Homer’s epic poem, the Iliad (2). The Mycenaean attempt to sack Troy failed, and

28. ## Combination

In a question paper there are two parts A and B . Part A contains 6 questions and part B contains 7 questions . in how many ways a student can select 4 questions in part A of which 2 questions are compulsory and 5 questions in part B of which 3 questions

29. ## Math

Consider the following indefinite integral. I= ∫ tan(x)sec^2(x) dx Part 1 of the question was to evaluate I using substitution, u=sec(x) my answer: (sec^2(x))/2 +C Part 2: evaluate I using substitution, u=tan(x) my answer: tan^2(x)/2 + C Part 3 is to

30. ## chemistry

The urine of horses are mixed with an excess of hydrochloric acid, after some time, a yellowish-brown crystalline precipitate, which have an unpleasant odor, that can't be removed by simply washing with water. This new compound has the following

31. ## Math

One alloy is 2 parts iron to 3 parts silver and another alloy is 7 parts iron to 3 parts silver. How much of each should be combined to produce a 30 pound alloy that is 1 part iron to 1 part silver?Please show me how to do this

32. ## physics

A 9.3 kg firework is launched straight up and at its maximum height 45 m it explodes into three parts. Part A (0.5 kg) moves straight down and lands 0.29 seconds after the explosion. Part B (1 kg) moves horizontally to the right and lands 10 meters from

33. ## Physics Help!!!

One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string?

34. ## writing skills

Do your homework before applying for any job. If you rewrote sentence 5 beginning with Be sure that you the next words should be 1 got done your homework 2 got your homework done 3 had done your homework 4 did your homework 5 have done your homework answer

35. ## physics

A 9.3 kg firework is launched straight up and at its maximum height 45 m it explodes into three parts. Part A (0.5 kg) moves straight down and lands 0.29 seconds after the explosion. Part B (1 kg) moves horizontally to the right and lands 10 meters from

36. ## math help1

Okay I am a little bit confused about one math question can you please Help me out? There is two parts but I already finished part a just stuck on part b Okay so part a. draw the reflection of f(x) = (square root X-2) in the Line y=X Okay I understand that

37. ## Statistics

The production process of computer parts uses two machines one old & one new. If the old machine is used the probability that the defected part is produced is .13 if the new machine is used the probability that the defective part is produced is .04.

38. ## Chemistry

Part 1: Each molecule of NO2, nitrogen dioxide, consists of 1 atom of N and 2 atoms of O. If you have 0.155 g. of NO2, how many molecules of NO2 do you have ? 0.155gx46.0 = moles moles x 6.02 E23 = answer Part 1 Answer: 2030000000000000000000 Part 2: How

39. ## PLZ HELP!!!! communication

DEFINITION----Selective listening: Involves focusing only on particualr parts of communication QUESTION---Selective listening is effective because we focus on the most important parts of a message. True or False my only problem is the deffiniton says

40. ## algebra

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer is no solution then type NS in both parts and if the the answer is infinite solutions then type I in

41. ## algebra

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

42. ## History

Jews were persecuted in Europe for hundreds of years even before the 20th century (1). Thousands were massacred by crusading knights on their way to the Holy Land (2). Another common practice was to force Jews into sections of town called ghettos (3). In

43. ## CHEM

could someone please explain how to work out the highest fhydride and the highest flouride of ununhexium ,if the valance is 6 UUHF6 AND UUH6 ,I THOUGHT IT WOULD HAVE BEEN UUH2COULD SOMEONE EXPLAIN MANY THANKS hi Jill i sent you a message are you able to

44. ## History

Read the summary. Rome’s empire covered 2.5 million square miles (1). But this large territory meant longer frontiers to defend and more lands to control (2). To flesh out the army’s dwindling ranks, Roman Senators declared that all able-bodied men

45. ## history

Read the summary. In the beginning, the Crusades had been about protecting Christians from the Saracens and reclaiming the city of Jerusalem (1). But in later Crusades, the Church began declaring holy wars on European land (2). For example, the Albigensian

46. ## math

a bathroom cleaner contains 1 part of bleach with 4 parts of water. if you need 10 parts of bathroom cleaner, how much water and bleach do you need? If 1 part bleach and 4 parts water = 5 parts, then what do you need to do to get 10 parts? Although this

47. ## Derivatives

Find f'(x): (abs(((x^2)*((3x+2) ^(1/3)))/((2x-3)^3)) So I thought I should split it into two parts: A and B. A) (x^2)/((2x-3)^2) B) ((3x+2)^(1/3))/(2x-3) My plan was to differentiate each part and then multiply them together, since multiplying their

48. ## World history

The Byzantine Empire began as the eastern half of the old Roman Empire and expanded to include much of Rome’s Mediterranean territories (1). South of the Byzantine Empire, the Arab Empire rose to power, conquering the Persian Empire (2). Over time, the

49. ## Maths

Divide Rs 116 among 4 parts such that 5 added to first part 4 subtracted from the second part 3 mutltiplied by third part and fourth part divided by 2 are all equal

50. ## calculus - what is the derivative?

Let f(x) = 2x^2 + 1 a. Find the derivative f' of f. b. Find an equation ofthe tangent line to the curve at the point (1,3). c. Sketch the graph of f. *Can someone please help me? I have been trying to do my homework for some time now and I am stuck on this

51. ## mathematics

n a particular manufacturing plant, two machines (A and B) produce a particular part. One machine (B) is newer and faster. In one five-minute period, a lot consisting of 32 parts is produced. Twenty-two are produced by machine B and the rest by machine A.

52. ## Statistics

In a particular manufacturing plant, two machines (A and B) produce a particular part. One machine (B) is newer and faster. In one five-minute period, a lot consisting of 32 parts is produced. Twenty-two are produced by machine B and the rest by machine A.

53. ## *** Discrete Math ***

I have solved parts of the question, but I want to know if they are correct. Other parts I'm not sure how to do, like part b and c. g(x)=2x+1 Define g^3= g^2 o g,...,g^n =g^(n-1) o g (where "o" means composition) a) Give rules for g^2, g^3, g^4 Ans: g^2= g

54. ## Who is correct? (chemistry issues here)

how can this person say that I googled info? (I created it randomly out of my head) and be so ungrateful that I spent the time out of my day to help? Or is it I don't know what I'm talking about and a "condensed structure" is not the answer to the homework

55. ## Physics Help!!!

One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string?

56. ## english

Do your homework before applying for any job. if you rewrote the sentence beginning with (Be sure that you) the next words would be? 1)got done your homework 2)got your homework done 3)had done your homework 4)did your homework 5)have done your homework

57. ## Urgent geometry help

On my test over parallel lines and proportional parts in triangles today, there was a question that asked to solve for x. There was 2 problems with x in them in the triangle. So would I just have to multiply each part by two and set them equal to each

58. ## Math

This is a two part question, make sure you answer both parts: 11, 14, 16 and 19 Find the mean. Find the median

59. ## Math

A wire of length 4 m is cut in two parts and the first part is bent in the shape of a square, while the second part is bent in the shape of an equilateral triangle. For which lengths of these parts the total area enclosed by the square and the triangle is:

60. ## college: Chemistry

Hi there I need help with my chemistry homework There are two parts to the first question and i did the first part and i got E= -6.54E-18J. Part A) Calculate the energy (in J) of the photon associated with the transition of electron in He from n=2 to n=1.

61. ## Chemistry

For my homework, there are two parts to the question. i did part a and I got E= -6.54E-18J. Part A) Calculate the energy (in J) of the photon associated with the transition of the electron in He from n=2 to n=1. Part B) As the Vaule of Z increases, does

62. ## QUESTION

What,if anything,is wrong with the following sentence? Do you advise me to go to college or that I should get a job after high school. 1.PROPERLY CONSTRUCTED SENTENCE 2.MISPLACED PARTS 3.LACKS PARALLEL PARTS 4.RUN-ON I AM THINKING ITS NUMBER (3)LACKS

63. ## algebra

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer is no solution then type NS in both parts and if the the answer is infinite solutions then type I in

64. ## algebra 1

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer is no solution then type NS in both parts and if the the answer is infinite solutions then type I in

65. ## Algebra 1

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer is no solution then type NS in both parts and if the the answer is infinite solutions then type I in

66. ## algebra

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer is no solution then type NS in both parts and if the the answer is infinite solutions then type I in

67. ## GENETICS ASAP

How do the nucleotides affect the DNA? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This question had two parts but I already the the first part and half of the second, so could you help me with this last part? Thanks in advanced, Derpy Pegasus

68. ## algebra

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

69. ## math

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

70. ## Math

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in

71. ## mathmatics

There are 5 parts to this question, so please make sure you answer all parts. ​Find the total area of the figure below. ​ ​ ​ ​Look on pgs. 196 to 197 in your instruction book for help. ​ Part A What is the area of triangle A? ​ feet squared

72. ## Chemistry

Small gene Big Plasmid Question 2 Part E is wrong. Question 2 Part F: Determine the DNA sequence of the PCR products, I have no idea how to proceed. In the assignments they were wrong also. I looked at the homework solutions, but I am still unsure how to

73. ## World History

What sort of things would contribute to the ancient Greek Intellectual and Political parts of S.P.R.I.T.E? Note: This is not homework this is just a question I have about my project.

74. ## Math Algebra

kassie an kesya are dividing \$39 into two parts in order that the sum of 2/3 of one part and 3/4 of the other part is \$28. What are the parts?

75. ## Language Arts

HELP ASAP. 11. This question has two parts 1. List some important ideas that Johnny Tremain includes. Why did you choose those ideas? 2. (i can do the other part, just want help on the first part)

76. ## Science-Pendulum

The four parts in which I had to go through this investigation was: Part 1: Practice Part 2: Does mass affect the swing rate of a pendulum? Part 3:Does Arc length affect the swing rate of a pendulum? Part 4:Does Length affect the swing rate of a pendulum.

77. ## Statistics

In a shipment of 21 parts, four of the parts are defective. If three parts are selected at random without replacement, find the probability that : a.) All three parts selected are defective. 4/21*3/20*2/19=.003 b.) None of the tree parts selected are

78. ## Physics

A manufacturer is designing a two part firecracker with a total mass of 1.0 kg. The firecracker will launch at a speed of 25 m/s, then separate into its parts some time, t, after launch. The parts have equal mass. If the parts separate such that the angle

79. ## physics

we just did an practical on newton's second law and we just have to do a report on it.... basically there are two parts to it, first part is when the overall mass of the system remains constant and the second part is when the force remains constant. there

80. ## History

Read the summary. In the 1910 Mexico presidential election, a writer and reformer named Francisco Madero challenged Porfirio Diaz for the office (1). When Diaz saw that Madero might win the election, he had the reformer arrested on false charges and

81. ## Science-Pendulum

The four parts in which I had to go through this investigation was: Part 1: Practice Part 2: Does mass affect the swing rate of a pendulum? Part 3:Does Arc length affect the swing rate of a pendulum? Part 4:Does Length affect the swing rate of a pendulum.

82. ## math

a number is divided into two parts such that one part is 10 more than the other. if the two parts are in the ratio 5:3,find the number and the two parts?

83. ## Math

You are asked to prepare zinc oxide paste using the following formula: Zinc oxide 1 part Calamine 1 part Starch 2 parts Petrolatum 4 parts How many farms if each component will you use to prepare 3 ounces of the product?

84. ## Math

Someone has broken down the material that he has to study into two parts: part A and part B and has, at most, 2 hours every evening over the next week to study. He wants to spend at least twice as much time studying for part A as for part B. Show

85. ## government

I am really confused with this part of my homework. Mrs. Sue please help me. OK here is my question: Why do you think free enterprise and capitalism usually develop as economic systems under democracy?

86. ## math

Split 27 in two parts such that one part is double of another. Find the parts.

87. ## Data Management

At a banquet, 4 coupes are sitting along one side of a table with men & women alternating. a) how many seating arrangements are possible for these eight people? b) how many arrangements are possible if each couple sits together? explain your reasoning.

88. ## Quick math help

On my test over parallel lines and proportional parts in triangles today, there was a question that asked to solve for x. There was 2 problems with x in them in the triangle. So would I just have to multiply each part by two and set them equal to each

89. ## calc

f(x)=[5x^3-4x^2-8x+9]/[2x^2-1x-3] Find the equation of the non-vertical asymptote. y = Does f(x) intersect its non-vertical asymptote? (yes or no) What is the smallest value of x at which f(x) intersects its non-vertical asymptote? ( Enter No in the

90. ## calc

f(x)=[5x^3-4x^2-8x+9]/[2x^2-1x-3] Find the equation of the non-vertical asymptote. y = Does f(x) intersect its non-vertical asymptote? (yes or no) What is the smallest value of x at which f(x) intersects its non-vertical asymptote? ( Enter No in the

91. ## Algebra 1

You are making up your own mix of concrete to patch a set of stairs. In order to have the proper mix, you need to mix 1 part of Portland cement with 2 parts of sand and 3 parts of gravel. A. How many total parts are in one batch of concrete? B. You make a

92. ## math

A wire of length 4 m is cut in two parts and the first part is bent in the shape of a square, while the second part is bent in the shape of an equilateral triangle. For which lengths of these parts the total area enclosed by the square and the triangle is:

93. ## Physics - EM spectrum

Here's the question: which part of the electromagnetic spectrum has a refractive index of 1.45 in glass? I've attempted to tackle it with v = frequency x wavelength and refractive index = light speed in vacuum / light speed in material but without

94. ## math

Given the indicated parts of triangle ABC with γ = 90°, approximate the remaining parts. (Round your answers for a and c to one decimal place.) β = 51°31', b = 250.0 α = ° ' a = c = Given the indicated parts of triangle ABC with γ = 90°,

could someone please help me with this two part question? I can not understand it. I need to hand in my homework by tomorrow. Thanks A thousandths grid is completely coloured in when three different decimals are shown. One decimal is double one of the

96. ## math

A number is divided into two parts such that one part is 10 more than the other. If the two parts are in the ratio 5:3. Find the number and the two parts

97. ## geography

No question! Just a huge THANKS! For all the help! I know I'm on my own for Tests and since I am trying to maintain an A average I want to make sure I stay on the right track!!!! Homework counts as a big part of our overall grade. THANKS AGAIN!