# joshua

Popular questions and responses by joshua
1. ## Further math

The sum of the 3rd and 7th term of an AP is 38 and the 9th term is 37. Find the AP.

2. ## Chemistry

what is the lowest frequency photon that can ionize a hydrogen atom with excited state electron configuration 3s1

3. ## Science

A gun fires a shell at an angle of elevation of 30 degrees with a velocity of 2*10^3m/s. What is the horizontal and vertical component of the velocity? What is the range of the shell? how high will the ball rise

4. ## Pre-Calculus

Find all of the fifth roots of 32i?

5. ## Physics

A force of 50N extends by a material by 0.05 m. Calculate the force constant. (a) 10.0 N/m (b) 100.0 N/m (C) 1000.0 N/m (d) 10,000.0 N/m

6. ## PHYSICS

on a partime job you are asked to bring a cylindrical iron rod of legnth 85.8 cm and diameter 2.85 cm from a storage room to a machinist. will you need a cart? (to answer calculate the weight of the rod.)

7. ## Chemistry

A 100.0 g sample of water at 27.0°C is poured into a 77.4 g sample of water at 89.0°C. What will be the final temperature of the water?

8. ## Math

If 7 1/4 boxes of parts weigh a total of 68 7/8 pounds, what does one box of parts weigh?

9. ## English arts 1 Nouns

Aaron plans to attend college once he completes this course workbook. im suppose to identify the nouns in the sentence the nouns are Aaron,college,workbook right? im debating on course idk? help lol

10. ## Chemistry

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl

11. ## Chem Uni. Urgent!!!

Have to find theoretical yield of recrystallization of acetanilide from water. 1 gram of crude product used (85% acetanilide, 14% Sodium chloride and 1% charcoal) I got 0.50 grams of purified product. With percent recovery of : (0.50g/1.00g)* 100% = 50%.

12. ## Physics

A 95 kg halfback makes a turn on the football field. The halfback sweeps out a path that is a portion of a circle with a radius og 12 meters. The halfback makes a quarter of a turn around the circle in 2.1 seconds. Determine the speed, acceleration and net

13. ## ENGLISH

1. which of the following elements of comedy are not used by Shakespeare in the merchant of venice? a. a clown like character b.puns c.slapstick d.clever language its either c or d i chose c am i correct? 2.which of the following is not a theme of the

14. ## home economics

mention the types of disposal of fullness?

15. ## Math

If there are 600 people in a concert audience, 3/10 are male and 5/6 are older than 10 years of age,how many people in the audience are female

16. ## English

Which Of The Following Descriptions From ''The Mirror'' Is An Example Of Personification? A. The Mirror Is Silver And Exact. B. The Candles And Moon Are Liars. C.The Opposite Wall Is Pink With Speckles. D.A Women's Face Replaces Darkness. This Is From

17. ## Science

why would a piece of wood float on water and sink in methylated spirit

18. ## Physics

Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 972 N at an angle of 28 degrees with respect to the direction in which the truck is headed, while the other car pulls with a force of 1401 N at

19. ## Math

Name the point with the given coordinates (4,-2).

20. ## maths

What is the length of an arc of a circle that subtends 2 1/2 radians at the centre when the radius of the circle is 8cm

21. ## English

to marguerite-continued by matthew arnold poem yes in the sea of life enisled,with echoing straits between us thrown,dotting the shoreless watery wild,we mortals live alone.the islands feel the enclasping flow,and then their endless bounds they know.but

22. ## English

to marguerite-continued by matthew arnold poem yes in the sea of life enisled,with echoing straits between us thrown,dotting the shoreless watery wild,we mortals live alone.the islands feel the enclasping flow,and then their endless bounds they know.but

23. ## English

can someone please check my answers. 1.)which of the following lines best demonstrates the tone of ''the nymph's reply to the shepherd'' by sir walter raleigh? a. "the flowers do fade,and wanton fields/to wayward winter reckoning yields;" b." then these

24. ## Arithmetic series

Suppose you are given the arithmetic sequence 3,6,9,...,99.What is the sum of the terms of this sequence?

25. ## Science math

Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 1104 days? How much polonium is in the sample 1104 days later?

26. ## science

The living plants that are most similar to the first plants to bear gametangia are the _____. a) charophyceans b) seedless vascular plants c) angiosperms d) gymnosperms e) bryophytes

27. ## English

can someone please check my answers 1.) which of the following is the best example of a paradox? a.death be not proud ,though some have called thee/mighty and dreadful. b.though art a slave to fate,chance,kings and desperate men. c.and death shall be no

28. ## ENGLISH

1. Which of the following elements of comedy are not used by Shakespeare the merchant of Venice? a.a clown like character b.puns c. slapstick d.clever languuage its either c or d i chose c am i correct? 2.which of the following is not a theme of the

29. ## ENGLISH

Which Of The Following Lines Best Demonstrates The Tone Of The Nymph's Reply To The Shepherd By Sir Walter Raleigh? a.the flowers do fade and wanton fields/to wayward winter reckoning yields. b.then these delights my mind might move/to live with thee and

30. ## Chemistry

how many molecules of sulphuric acid is needed to neutralize 5ml of potassium bicarbonate (iv)acid when calcium is heated at temperature 200 calcius using nickel as catalyst

31. ## ENGLISH (ESSAY)

ESSAY ON THE TOPIC THE HARMATTAN

32. ## math

A student is attempting to factor a polynomial. Sample mathematical work is shown below. Which statement best applies to the sample mathematical work? Given 3x + 6, the factors of the first term are 3 and x, and the factors of the second term are 1, 2, 3,

33. ## Physics

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

34. ## Data Management

A box contains 14 yellow, 6 green, 10 purple, and 12 red candies jumbled together. What is the expected number of red candies among 5 candies poured from the box?

35. ## Physics

An infinite thread of charge density lamda lies along Z axis. The potential difference between the points A(4,3,4) and B (3,4,0)is?

36. ## Phyics

A Rock Is Thrown Vertically upward with a speed of 12m/s. Exactly 1.00s later a ball is thrown up vertically along the same path with a speed of 18m/s. At what time will they strike each other? so far I got this but it does not seem to be working out for

37. ## Mathematics

Hi there, Can someone help me with the question: "Prove that the value of 7sinx +3cos2x cannot be greater than 5/1/24 for all values of x between 0 degrees and 360 degrees" Thanks lots. =) I've already simplified 7sinx + 3cos2x into (2sinx-3)(3sinx+1).

38. ## ecology

WHICH WEATHER SITUATION WILL BE THE LEAST COMFORTABLE FOR A LONG DISTANCE RUNNER? A.20* CELCIUS (68f) WITH RELATIVE HUMIDITY OF 40% B. 20* CELCIUS (68f) WITH RELATIVE HUMIDITY OF 90% C.25* CELCIUS (77 f) WITH RELATIVE HUMIDITY OF 90% D.35* CELCIUS (95 f)

39. ## chemistry

Match the correct mole ratio to the substances in the reactions below. carbon monoxide to iron in the reaction: Fe2O3 + CO ==> Fe + CO2 water to manganeese(II) chloride in the reaction: HCl + MnO2 ==> H2O + MnCl2 + Cl2 sodium to oxygen in the reaction: Na

40. ## Physics 221

An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4m/s^2. Its average velocity as it goes from x=2m to x=8m is: A. 1m/s B. 2m/s C. 3m/s D. 5m/s E. 6m/s An object is released from rest and falls a distance H

41. ## English

london by william blake poem i wander through each chartered street, near where the chartered thames does flow, and mark in every face i meet marks of weakness,marks of woe.in every cry of every man,inevery infant's cry of fear,in every voice,in very

42. ## English

can someone who is knowledgeable in english literature please check my answers thank you. 1.)which of the following phrases from ''the rear-guard'' is an oxymoron? a.''blackening wound'' b.''stinking place'' c.''rosy gloom'' d.''unanswering heap'' i chose

43. ## math

Use scalar multiplication to find the coordinates of the vertices of each figure for a dilation centered at the origin with the given scale factor. Parallelogram JKLM with J(−4, 3), K(−4, 7), L(2, 7), M(2, 3); r = 5 Thank you!

44. ## Chemistry

What is the concentration of a monoprotic weak Acid if its pH is 5.50 and its Ka= 5.7 x 10^-10?

45. ## math

if 4.5 pounds of cherries cost \$10, what is the unit price per pound

46. ## Chemistry

a solution of HCL is approximately 0.1M and has to be standardized . 1.234g Na2CO3 are dissolved to make 100ml of solution. 20mL of this solution are titrated with the HCL solution, requiring 31.3mL for the second equivalence point. what is the exact

47. ## Physics

A machine with v.r 5 was used to raise a load of 1.2kg mass through high of 10m. If the workdone to raise the load is 800j find usefull work output, find efficiency,and m.a of the machine

48. ## chemistry

calculate the percentage of sulphur in sodium thiosulphate, Na2S2O2

49. ## Math

A craft shop buys stuffed animals with a list price of \$8,000. If the wholesaler offers trade discounts of 25/25/25, find the net price factor.

50. ## English

can someone please check my answers 1.what is the best way to figure out a poem's theme? a.look for a line in which the poet states the theme directly. b.infer the theme from details,images,and symbols. c.analyze the rhyme scheme and meter of the poem.

51. ## math

A segment with endpoints C(-3, 3)and D(7, 3) is the diameter of a circle. a. What is the center of the circle? b. What is the length of the radius? c. What is the circumference of the circle? d. What is the equation of the circle?

52. ## Math

If two fair dice are​ rolled, find the probability that the sum of the dice is 6​, given that the sum is greater than 3.

53. ## math

the product of three numbers is 315.if two of the numbers are 7 and 9 .what is the third number?

54. ## math

Cynthia has a bag of jellybeans. There are two red jellybeans, one yellow jellybean, and two black jellybeans in her bag. Cynthia grabs two jellybeans and gives them to her friend, Pedro, and he eats them. What is the probability that she gives him two red

55. ## Programming

using c++ write a program that accepts the unit weight of a bag of coffee in pounds and the number of bags sold and display the number of bags sold ,the weight per bag price per pound sales tax and total price of the sale.the unit of a bag of coffee is

56. ## Physics

how much does a 2 lietr bottle of soda pop weigh in pounds? assume that the pop has the density ofg water,namely 1 kg\lietr and that the weight of the bottle itself is negligible?

57. ## calculus

The question is: tan(arcsinx)= I know that inverse of sin is 1/sqrt(1-x^2) however this question still confuses me. The outcome is x/sqrt(1-x^2), how did the tan create the additional x ?

58. ## math

A student completed 44% on a test. He completed 22 question. Then how many questions are on the test

59. ## Chemistry

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl

60. ## University Physics

Determine an equation for the total force needed to drag a box at constant speed across a surface with coefficient of kinetic friction uk when the force is applied at an angle theta.

61. ## Algebra

What is 4x + 2y = -20 written in slope-intercept form?

62. ## algebra

Two cars are driving toward each other from opposite directions. If one is driving 55 mph, the other is driving 60 mph and the cars are 500 miles apart, how long will it be before they pass each other? Round to the nearest tenth of an hour

63. ## Calculus

We're doing optimization problems and this is one that I am having trouble with: Suppose a business can sell x gadgets for p=250-0.01x dollars apiece, and it costs the business c(x)= 100+25x dollars to produce x gadgets. Determine the production level and

64. ## biology

what is the the equation for photosynthesis?

65. ## History

What aspects of european society did the church dominate from 1100 to 1300?

66. ## Science

Two things in common between hydraulic and pneumatic systems?

67. ## algebra

A system of equations consisting of a linear equation and a quadratic equation ____ has two solutions. a. always b. sometimes c. never ** The solutions given by the quadratic formula are ____ integers. a. always b. sometimes ** c. never Can someone check

68. ## Math

Calculate: The first term of a linear sequence is 5 and the common difference is 3, find the 15th term of the sequence

69. ## Mathematics

Solve, if the first term of an Ap is equal to one half of the common difference d, find the 8 term of the Ap

70. ## Internet safety

What is one purpose of fair use laws

71. ## English

can someone please check my answers 1.)what is the best way to figure out a poem's theme? a.look for a line in which the poet states the theme directly b.infer the theme from details,images,and symbols c.analyze the rhyme scheme and meter of the poem d.use

72. ## Algebra

Find the unknown digit to make the sentence true 2.48>2.4__ 1>2.463 5.723

73. ## Math

The owner of a small business is aiming to increase sales by ₱1000 weekly. If this condition is met, how much should be the sales on the first week to reach exactly ₱75 000 worth of sales in ten weeks? Type your answer without the peso sign.

74. ## English

1.)my first question is which of the quotes from henry's speech represents an appeal to the head? a. '' we are apt to shut our eyes against a painful truth, and listen to the song of that siren, till she transforms us into beasts.'' b.''has great Britain

75. ## science

The temperature in the room is rising because the explosion is releasing _____ energy into the air, increasing the speed of the air molecules in the room.

76. ## chem

The dibasic compound B (pKb1 = 4.00, pKb2 = 8.00) was titrated with 1.00 M HCl. The initial solution of B was 0.100 M and had a volume of 100.0 mL. Find the pH at the following volumes of acid added and make a graph of pH versus Va; Va=0, 1, 5, 9, 10, 11,

51tens+9ones

78. ## Math

figure RSTU is a rectangle. if m of angle SUT = 3x + 6 and m of angle RUS = 5x - 4, find m of angle SUT

79. ## maths

A shape ABCDE is made up of an isosceles triangle and a rectangle. The perimeter of ABCDE is 46cm. 1) what is the length of AB?

80. ## maths

Three numbers add up to 180. The second number is twice the first, and the third number is three times the first. WHAT IS EACH NUMBER?

81. ## math

the number has 5 digits the value of the largest digit is 90,000 the value of the thousands place is the same value in every place the sum of the hundreds place and the tens place is 7 the value of the smallest value is 4 97,774

82. ## physics

a uniform rod 100cm long and weighing 50N is supported in a horizontal position on a fulcrum with weights 80N and 100N suspended from its end. compute the position of a fulcrum.draw the illustration.

83. ## Physics

A circuit employs a silicon solar cell to detect flashes of light lasting 0.25 s. The smallest current the circuit can detect reliably is 0.32 μA . Assuming that all photons reaching the solar cell give their energy to a charge carrier, what is the

84. ## Health

How long do anxiety disorders last? A .at least two years b. at least one year c. at least 6ix months d. at leaks 6 weeks D?

85. ## Physics

Horse canters away from its trainer in a straight line moving 130 m away in 16.0 s. It then turns abruptly and gallops halfway back in 4.3 s? (a) Calculate its average speed. (b) Calculate its average velocity for the entire trip, using "away from the

86. ## American Government

The fourth branch of government refers to

87. ## PHYSICS

A 209 kg block is released at height h = 3.3 m as shown. The track is frictionless except for a portion of length 7 m. The block travels down the track, hits a spring of force constant k = 1545 N/m, and compresses it 1.9 m from its equilibrium position

88. ## auto repair technician

Is there anyone taking the automobile technician course in penn foster wanting to team up to study together. I'm having trouble with exam #004846

89. ## Chem

How many grams of water could have its temperature raised from 25 ºC (room temperature) to 100 ºC (the boiling point of water) by the amount of energy released in the formation of 4.0 mol of H2 from hydrogen atoms? The bond energy of H2 is 435 kJ/mol.

91. ## Math

A dog ate 48 bones. The other dog ate 47 bones. How much bones did both dogs eat?

92. ## calculus

lim t-> -infinity for sqrt(4t^2-5t-1)/(2t-3) I get infinity or -infinity, but the real answer is -1. How does this occur?

93. ## calculus

The question is: tan(arcsinx)= I know that inverse of sin is 1/sqrt(1-x^2) however this question still confuses me. The outcome is x/sqrt(1-x^2), how did the tan create the additional x ?

94. ## calculus

f(x) = ln(ln(lnx)) has the domain of (e, infinity). I am not sure how this occurs however. I know in the case of ln x, x must be greater than 0. However where does e come from. e is the base of log in the case of ln, but something is just not clicking for

95. ## College Physics

1. In a region of two-dimensional space, there are three fixed charges: +1 mC at (0, 0), −2 mC at (18 mm, -3 mm), and +3 mC at (-8 mm, 12 mm). What is the net force on the −2-mC charge? Find the magnitude and direction (counterclockwise from the

96. ## chemistry

85.0 of is initially at room temperature (22.0). A chilled steel rod at 2.0 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar? Specific heat of water = 4.18 Specific heat of steel = 0.452 My answer

97. ## English/Literature

I have to write an essay, but I just need help with coming up with some ideas. In the essay, I have to compare/contrast the plays "Ajax" OR "Electra" (both are by Sophocles) with the "Iliad" (by Homer). I CANNOT mention similarities/differences in plot

98. ## English

Combine each pair of sentences use and,but,or, to join the two predicates The total suprised us. The total pleased us.