# Questions Asked onAugust 16, 2012

1. ## physics

a wire under tension vibrates with a fundamental frequency of 256Hz. what would be the fundamental frequency if the wire were half as long, twice as thick, and under 1/4 tension?

2. ## physics

The length and breadth of a rectangular sheet are 16.2 cm and 10.1cm, respectively. The area of the sheet in appropriate significant figures and error is (a) 164 ± 3 cm2 (b) 163.62 ± 2.6 cm2 (c) 163.6 ± 2.6 cm2 (d) 163.62 ± 3 cm2 please explain me what

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3. ## Physics - Electromagnetism 2

Two coils, held in fixed positions, have a mutual inductance of 165 µH. What is the peak emf in one coil when the current in the other coil is I(t) = 16.0 sin(1.15 103t), where I is in amperes and t is in seconds? Just a few hints on how to start it off

4. ## math

Is g = {(1, 1), (2, 3), (3, 5), (4, 7)} a function? Justify. If this is described by the relation, g (x) = αx + β, then what values should be assigned to α and β?

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5. ## precalc

use power reducing identities to prove the identity sin^4x=1/8(3-4cos2x+cos4x) cos^3x=(1/2cosx) (1+cos2x) thanks :)

6. ## Physics - Electromagnetism

An inductor in the form of a solenoid contains 440 turns and is 15.8 cm in length. A uniform rate of decrease of current through the inductor of 0.421 A/s induces an emf of 175 µV. What is the radius of the solenoid?

7. ## English

Choose the sentence that has a compound predicate. A. Sandy washed and ironed her clothes. B. Sue and I will listen. C. We went home to eat and to study. D. Swimming and golfing are Jim's favorite sports. Is it D?

8. ## algebra 2

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x + y = 2 3x + 2y = 9

9. ## English

Which kind of adjective is used most frequently in ordinary speech or writing? A. Proper B. Common C. Article D. Demonstrative Is it B?

10. ## physics

steeel and silver wire of the same diameter and same length are stretched with equal tension. what is the fundamental frequency of the silver wire if that of the steel is 200 Hz.

11. ## English

In the following sentence, identify the part of speech of the italicized word. Thousands of years ago, fish were caught in nets and traps. A. Verb B. Preposition C. Pronoun D. Conjunction Is it B?

12. ## pre-calc

jessica is standing 2 miles from the center of the base of pikes peak and looking at the summit of the mountain which is 1.4 miles from the base, what angle of elevation is jessica looking at the summit of the mountain?

13. ## english

What strategy does Edwards use to make the application of his conclusions seem very personal and relevant to his audience?

14. ## English

In the following sentence, what is the subject complement? My neighbor is a newspaper reporter. A. Reporter B. My C. Neighbor D. Newspaper Is it A?

15. ## us history

Which two acts did not include a new tax? 1.the Sugar Act and the Stamp Act 2. the Sugar Act and the Quartering Act 3.the Quartering Act and the Coercive Acts 4.the Coercive Acts and the Townshend Acts

16. ## english

Choose the correct singular, third person, conjugation of the verb to be in the future perfect tense. A. You have been B. I will be C. She will have been D. They will have been is it D?

17. ## art

Using Internet resources, find one example of installation art. Describe the artwork you have found, including the title, artist, year created, and where it is installed. What is the meaning of the work? How does the meaning relate to what the artist has

18. ## Math

To open the chest of shells the souvenir merchant must enter a code. As his memory is poor, to remember the code he has filled in this speech bubble so that every statement is correct. What is the code? ? X number 1, ? X number 2, ? X number 3, ? X number

19. ## chem

hemoglobin, the oxygen-carrying protein in red blood cells, has four iron atoms per molecule and contains .340 percent iron by mass. calculate the molar mass of hemoglobin! thanks! :)

20. ## history

Which of the following is true of President G. W. Bush? A. He reluctantly endorsed the Kyoto Protocol. B. He accepted the United States' role in the International Criminal Court. C. He vowed to punish all countries sponsoring terrorism. D. He rejected

21. ## physic

A dog sled weighing 750 lb is pulled over level snow at a uniform speed by a dog team exerting a force of 60 lb. Find the coefficient of friction.

22. ## Algebra

please help me on how to complete the table and evaluate f(x) x=0, x=1, x=2, x=3, x=4 f(x)7/x-1 my answers were -7 for x=0 7/0 for x=1 7 for x=2 7/2 when divided 3.5 ?? for x=3 7/3 when divided 2.3 ?? for x=4 I am not sure if this is correct.. please HELP

23. ## Economics

Hey I've just had a mind blank. What is the term for when a business has outgrown its limits and is starting to perform badly? Thanks for the help

24. ## physics

A motorboat travels due north at a steady speed of 3.0 m/s through calm water in which there is no current. The boat then enters an area of water in which a steady current flows at 2.0 m/s in a southwest direction, as shown in the next picture. Both the

25. ## Science (Physics)

1. Which of the following is the fastest speed? Show your working. (a) 60 km/h (b) 15 m/s (c) 1.1 km/min

26. ## math

i am a three digit number. my hundreds digit is three more than my ones digit.my tens digit is oneless than my hundreds digit. what numbers can i be?

27. ## Algebra2

Help Please? 1.30√-25 x 8√-49 2. 6√-64 + 12√-36 3. 4√-13 - 6√-13

28. ## geometry

Prove that median of a isoeceles trinangle is perpendicular to the unequal sides.

29. ## physics

Measure of two quantities along with the precision of respective measuring instrument is A = 2.5 m s–1 ± 0.5 m s–1 B = 0.10 s ± 0.01 s The value of A B will be (a) (0.25 ± 0.08) m (b) (0.25 ± 0.5) m (c) (0.25 ± 0.05) m (d) (0.25 ± 0.135) m please

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30. ## Algebra2

Can Someone Check My Anwsers? 1. -17=10x+3 = x=2 2.9x+5=7x+3x-2 = x= 7/1= 7 #I Do Have My Work Shown, On a Separate Sheet Of Paper . But I Want to Know If I Got My Answers Right.

31. ## Algebra2

Check Answers Please? 1. 5+(2+3i) + (-3-7i) = 4 + -4i 2. (5-10i) - (2+i) = 7 - 9i 3. -5i(2-3i) = -10i - 15 4. (2+3i)(-3-7i) = (1)(4i)

32. ## com/155

what objecets,people,subject or concepts are you going to compare and or contrast?

33. ## English

What is the difference between paradox and irony?

34. ## Algebra2

I got this answer for a problem, and I'm not sure if it's right. Can someone tell me if I'm correct? 1.(2+4i / 3-i) = 6/7+5/7i

35. ## ziploc bags

how big are quart size ziploc bags in centimeters? ____ x ____ ????

36. ## Chemistry

A compound of molecular weight 70.1 has the following composition: Carbon 85.63% and hydrogen 14.37%. What is the empirical formula? What is the molecular formula?

37. ## math

Seven of the children have white socks.Two of the children have blue.How many more children have white socks then blue socks?

38. ## Algebra2

Making Sure these are right? absolute value: 1.|7x+2|=10 x=1.1 x=1.7 2.|3x-5|=-1 x=1.3 x=2

39. ## Math

HELP?! 1.-9^2 2.(5x^9y)(-2x^-2y^-3) 3.(a^1b^-2) / (a^-2b^4) 4.(7x^-1/y^4)^-2 Scientific notation: 5) .0000745 Decimal Form: 6) 9.3*10^6 Solve: 7.3√-27 8.√(-5a)^2 Simplify: 9.√60x^5y^2 10.√75x^3 / √3x

40. ## english

i needto learn something on art of questening could you pl help me

41. ## geography

1. All of the following are among the Pillars of Islam except. A. performing daily prayers. B. memorizing the Koran. C. giving to charity. D. making a Hajj. 2. What was the result of Iran's 1979 revolution? A. The Sunnis defeated the Shiites in their

42. ## Algebra2

Are these right?! Absolute value : 1. |x^2-2x+16|=8 x=-4 x=-3 x=-2 x=2 2.|3x-2|=7 x=5\3 x=3 3. |3x+2|+3=0 x= -5/3

43. ## social studies

Have you learned something new about your own racial, ethnic, or cultural history?

44. ## writing

I am in 8th grade and I just want to see if this essay is persuasive the topic is Your surrondingss create who you are?

45. ## Algebra2

How would you solve these absolute value equations? 1.|3x-1|=|x+4| 2.|3/k-1|=4

46. ## Chemistry

How much ethanol can be vaporized in 10 min. When under under direct sunlight?

47. ## aig math

the sum of 2 numbers is 35. one number is 2 1/2 times as big as the other number. find the difference between the 2 addends. please show how you got the answer.

48. ## math

If a board 4 ft.X 8 ft. was cut into 50 pieces, what size would each piece be?

49. ## Math

What do the brackets mean in this problem? a[(b-c)/d]-f Am I suppose to times the answer of everything in the parenthesis by a?

50. ## Pre-Calc

Please help me with this word problem, I can't seem to figure it out. Both Derek and Sam are 5ft 10in tall. Derek looks at a 10ft basketball goal with an angle of elevation of 29 degrees, and Sam looks at the goal with an angle of elevation of 43 degrees.

51. ## Algebra

Simplify the radical expression. 1. 27x^4y^5 2.72m^2n^8

52. ## Math

Two integers A and B are graphed on a number line. If A is less than B, is |A| always less than |B|?

53. ## writing

is this essay persausive and can you check and fix any mistake topic is your surroundings create who you are My surroundings create who I am. My parents help me by taking me to school picking me up from school. They also encourage me to do the best. They

54. ## English 11

What is an example of a good conclusion sentence?

55. ## english

The Electronic Reserve Reading for this week, “Bare Bones Guide to Good Introductions,” states that an effective introduction must “make use of psychology” (page 20). What do you think the author meant?

x+1/3=5/6

57. ## Trigonometry

Solve each triange given the indicated measures of angle and sides b=43degrees y=36 degrees a=92cm

58. ## math

Can you make, using any math symbols, make four 8s equal 5?

59. ## Geography

Describe two ways in which mountain ranges have affected the culture and population distribution of India.

60. ## science

3ml of 2M NaOH is added to 27 ml of destilled water. what dilution is made? what is the concetration of Naoh in the dilution?

61. ## psyc

Lydia behaves appropriately only because she is aware of rewards and punishments. Which level of moral reasoning do her behaviors reflect?

62. ## math

In a recent survey of 100 women, the following information was gathered. 53 use shampoo A. 31 use shampoo B. 31 use shampoo C. 4 use shampoos A and B. 10 use shampoos A and C. 13 use shampoos B and C. 3 use all three. Use the figure to answer the question

63. ## algebra

the first of two films lasted 9 minutes less than twice as long as the second. the combined length of the two films plus a 5-minute break between them was 260 minutes. how long was the first film?