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  1. physics

    A clean glass capillary tube is held vertically in water raised to a height of 7cm. The tube is down depressed and only 5cm of its length is above water. What will be the angle of contact?

  2. Chemistry

    Iron combines with oxygen and water from the air to form rust. If an iron nail were allowed to rust completely, one should find that the rust weighs: I know the answer is the rust should way more than the nail it came from but can someone explain why

  3. physics

    two dogs play tug of war with a rope toy that has a mass of 0.50 kg. if one dog pulls on the toy with a force of 140.0 N, and the other dog pulls in the opposite direction with a force of 138.0 N, what is the horizontal acceleration of the toy?

  5. physics

    70-kg man jumps off a raft 2 meter squared moored in a freshwater lake. By how much does the raft rise?

  6. history

    1. Select the boxes in the table to compare and contrast Warren Harding and Calvin Coolidge's policies and actions. raised tariffs pro-business agenda reduced worldwide armaments turned a profit in the White House through frugal policies 2. Which

  7. Algebra 1

    1.) Which best describes a system of equations that has no solution? A. Consistent, independent B. inconsistent, dependent C. consistent, dependent D. inconsistent** 2.) How many solutions does this system have? 2x+y=3 6x=9-3y A. one B. none C. infinite**

  8. Chemistry Please Help Thanks!

    Calculate the volume of solution that has a vapour pressure of 25.8 mbar and contains 200.3 g of galactose, C6H12O6, at a temperature of 22.0 °C. The vapour pressure of pure water at 22 °C is 26.40 mbar, the density of water is 1.00 g mL-1, and assume no

  10. trigonometry

    the bases of a trapezoid are 22 and 12 respectively. The angles at the extremities of one base are 65 degree and 40 degree respectively find the two legs. Answer using law of sines pls

  11. Physics-Math

    1.5 m3 of water is mixed with 0.50 m3 of alcohol. Density of water is 1000 kg m–3 and density of alcohol is 800 kg m–3. Whats the density of the mixture with volume 2.0 m3?

  12. Chemistry

    If milk has a density of 1.03 g/mL, what is the mass of 6.00 qt, reported in kilograms?

  13. Chemistry

    In Part C, you determined that the proper ratio of packages of buns, packages of patties, and jars of pickles is 3:2:4. If you want to feed at least 540 people, but also maintain the proper ratio, what minimum number of packages of buns, packages of

  15. Math

    Jane is buying squid balls and noodles for her friends.Each cup of noodles costs Php 15 while each stick of squid balls costs Php 10.She only has Php 70 but needs to buy at least 3 stick of squid balls. A. Write a system of linear inequalities to model the

  16. Math

    Tickets for a play cost Php 250 for adults and Php 200 for children.The sponsor of the show collected a total amount of not more than lhp 44,000 from more than 150 adults and children who watched the play. A. What mathematical statements represents the

  17. mechanics

    Find the greatest and least resultant of two forces whose magnitude are 12 N and 8 N respectively

  18. math

    Three numbers form a geometric progression. If the second term is increased by 2, then the progression will become arithmetic and if, after this, the last term is increased by 9, then the progression will again become geometric. Find these three numbers.

  20. Physics

    When a 300N force is applied to a box weighing 600N the box moves 3.0 horizontal in 20seconds

  21. Math

    1. For the following system of equations, what is the x-value of the solution? -x+2y=6 6y=x+18 a. -18 b. 0*** c. -6 d. 3 2. Solve the following system of equations using substitution. What is the value of y? 2x+3y=105 x+2y=65 a. 15 b. 25 c. 40*** d. 65

  22. probability theory

    3 students; A, B and C, are in a swimming race. A and B have the same probability of winning and each is twice as likely to win as C. Find the probability that B or C wins the swimming race. 3) Given three boxes as follows: Box A contains 3 red, 2 white

  23. Physics

    A black mamba snake has a length of 4.3 m and a top speed of 8.9 m/s! Suppose a mongoose and a black mamba find themselves nose to nose. In an effort to escape, the snake accelerates at 20 m/s2 from rest. (a) How much time does it take for the snake to

  25. physics

    Three applied forces, F1= 20.0 N, F2= 40.0 N, and F3 = 10.0 N act on an object with a mass of 2.00 kg which can move along an inclined plane as shown in the figure. The questions refer to the instant when the object has moved 0.600 m along the surface of

  26. Chemistry

    The speed of light is 3.00x 10^8 m/s . How fast is this in miles per hour (miles/h)? Use the conversion . 1mile =1610m

  27. Algebra Linear Systems Unit Test Help ASAP

    Juan is buying flowers for his mother. He has $18 to spend and sees that roses are $3 each and carnations are $1.50 each. He wants to buy 3 times as many carnations as roses and plans to spend all of his money on flowers. Write a system of equations to

  28. lang arts

    Read this excerpt from The mircale worker. Which element of drama does the author use in this excerpt? AND IF U KNOW THE ANSWER FOR ALL OF IT PLEASE AHH

  30. Math

    Three numbers X, Y, and Z are in the ratio 2:7:8. If 12 is subtracted from Y, then three numbers form a geometric sequence (in the order X, Y–12, Z). Find X, Y, and Z. There are two sets of answers I already found one set i am unsure how to find the

  31. science

    The solubility products of AgCl and 𝐴𝑔3𝑃𝑂4 are 1.6 × 10−10 and 1.8 × 10−18, respectively. If 𝐴𝑔+ is added (without changing the volume) to 1.00 L of a solution containing 0.10 mol 𝐶𝑙− and 0.10 mol 𝑃𝑂4 3−, calculate

  32. Writing

    Write 1-2 paragraphs explaining Why electronic file organization is a key skill for today’s workplace? You may use a scenario from your current and/or future workplace where file organization and file sharing would be a critical skill to have. You may

  33. math

    George works for $15 an hour. Each day he works 5 hours. Each week he works 5 days. After 8 weeks, about how much will George have earned?

  35. American History

    Based on the information on the map, what can you infer about industry in the United States? A. Manufacturing was a key part of the economy in the Northeast*** B. Agriculture was the main industry in the south C. Mills in the Northeast had to be close to

  36. Chemistry

    Which of the following processes is endothermic? a) H2O (g) --> H2O (l) b) 3O2 (g) + 2CH3OH(g) --> 2CO2(g) + 2H2O(g) c) H2O (s) --> H2O (l) d) O2(g) + 2H2(g) --> 2H2O(g) I a guessing b, since energy has to go into the reaction for water to go from a solid

  37. Math (Please help!!)

    Given A(-4,-2), B(44), and C(18,-8, answer the following questions Write the equations of the line containing the altitude the passes through B in standard form. Write the equation of the line containing the median that passes through point C in

  38. Technology

    1. A mnemonic is a tool that you can use when you are studying to help you do which of the following? A. remember lists or large amounts of information more easily** B. write information on paper more easily C. print out information more easily D. copy and

  40. math(epidemiology)

    A population of 100 healthy men was followed for the development of prostate cancer. After being followed for 5 years, 20 men developed prostate cancer. Ten other men were followed for 1 year and then were lost to follow-up. The remaining men who never

  41. Math

    In your​ class, you have scores of 73,85,76, and 92 on the first four of five tests. To get a grade of Upper C, the average of the first five tests scores must be greater than or equal to 70 and less than 80. a) Solve an inequality to find the least

  42. Statistics

    Anger and Snap Judgments Read the article entitled “Anger Can Cause Snap Judgments” and answer the following questions. ANGER CAN CAUSE SNAP JUDGMENTS Anger can make a normally unbiased person act with prejudice, according to a forthcoming study in the

  43. Health

    A person who hasn't smoked in two hours and is irritable is showing symptoms of.... A. Respiration B. Hunger C. Withdrawal D. Addiction You are supposed to pick two, and I think it is B and C. Please correct me if I am wrong. Thank you!

  45. Physics

    A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 19.0m/s , and the distance between them is 52.0m . After t1 = 5.00s , the motorcycle

  46. Algebra 1

    Which point on the axis satisfies the inequality y

  47. Math

    The value of k that makes the expression x^2 + 72x +k a perfect square trinomial is ?

  48. math

    a 40 year building programme for new houses began in 1951(year 1) and finished in 1990 year (40). The number of houses built each year form an A.P. With the first term 'a' and the common difference 'd'. Given that 2400 new houses were built in 1960 and 600

  50. MATHS

    Two different schools (A and B) have the same number of pupils. The ratio of the boys in school A and the boys in school B is 2:1 and the ratio of the girls in school A and the girls in school B is 4:5. Find the ratio of the boys in school A to the girls

  51. chemistry

    I'm not sure how to solve this: If 125 cal of heat is applied to a 60.0-g piece of copper at 20.0∘C , what will the final temperature be? The specific heat of copper is 0.0920 cal/(g⋅∘C). Express the final temperature numerically in degrees Celsius

  52. Physics

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.6 m/s2 for 4.5 seconds. It then continues at a constant speed for 7.3 seconds, before applying the

  53. English

    select the correct form of the possessive for the bolded word(s). with MS.SMITH assistance, we learned to paddle a cone. *Ms Smith's Ms Smiths's Ms Smitheses' Ms Smiths After several HOURS worth of work, she finished the project. hour's *hours' hours's

  55. science

    a man wishes to swin across a river 600 m wide. If can swim at the rate of 4 km/hr in still water and the river flows at 2 km/hr. Then in what direction must he swim to reach a point exactly opposite to the starting point bnd when will he reach it ?

  56. algebra

    use the remainder theorem to find the remainder when P(x)=x^4-9x^3-5x^2-3x+4 is divided by x+3

  57. Chemistry

    According to the Star Trek "Fifth Interstellar Geophysical Conference Standard" version of the periodic table, there are 140 known elements. In what group of the periodic table would you place element 117, "topaline" which is reported to have been

  58. College Algebra

    The area of a rectangular wall of a barn is 24 square feet. Its length is 8 feet longer than twice its width. Find the length and width of the wall of the barn

  60. Physics

    if a 120-g mass is placed at the 25-cm mark and a 25-g mass at the 10-cm mark, where should a 500-g mass be placed to balance the system?

  61. physics

    A charge of 6.00mC is placed at each corner of a square 0.100 m on a side. Determine the magnitude and direction of the force on each charge.

  62. physics

    A clean glass capillary tube is held vertically in water raised to a height of 7cm. The tube is down depressed and only 5cm of its length is above water. What will be the angle of contact?

  63. Mathematics

    Solve for the sum of 5x + 3 and 2x-5.

  65. Calculus

    A right triangle has base x meters and height h meters, where h is constant and x changes with respect to time t, measured in seconds. The angle θ, measured in radians, is defined by tanθ=hx. Which of the following best describes the relationship between

  66. physics

    A driver at Dewaan Motors is testing a new model car with a speedometer calibrated to read m/s rather than km/h. The following series of speedometer readings was obtained during a test run along a long, straight road: Time (s) 0 1 3 5 7 9 11 13 15 17 19

  67. physics

    On a 200 km bike cycle ride, you ride the first 90 km at an average speed of 20 m/s. What must your average speed over the next 40 km be to have your average speed for the total 200 km be? (a) 60 m/s? (b) Given this average speed for the first 90 km, can

  68. Geometry

    A regular dodecagon P_{1} P_{2}P_{3}...P_{12} is inscribed in a circle with radius $1.$ Compute \[(P_1 P_2)^2 + (P_1 P_3)^2 + \dots + (P_{11} P_{12})^2.\](The sum includes all terms of the form $(P_i P_j)^2,$ where $1 \le i < j \le 12.$) sorry if it's in

  70. Physics

    A board rests on two springs, keeping the springs at equilibrium. Each spring has a spring constant of 10,000 N/m. How far will each spring compress when a 50kg person sits on the board? Any idea how to do this?

  71. statistics

    The random variable W can take on the values of 0, 1, 2, 3, or 4. The expected value of W is 2.8. Which of the following is the best interpretation of the expected value of random variable W? A. A randomly selected value of W must be equal to 2.8. B.The

  72. Stats

    The binomial expression 8C2 (1/3)^2(2/3)^6 gives the probability A.At least 2 successes in 8 trials of the probability of success is 1/3 B.At least 2 successes in 8 trials of the probability of success in one trial 2/3 C.Exactly 2 successes in 8 trials of

  73. Probability

    A popular word game starts with 100 letter tiles in a bag. The table shows the distribution for the vowels. Vowel A E I O U Number of Tiles 9 12 9 8 4 What is the probability that a vowel is selected on the first draw? Just seeing if I get this. 42 vowels

  75. Math

    Q1.How many quarters are there in 18×3/4?

  76. Chemistry

    What is the mass of 50.0 L of O2(g) at STP? O is 16g/mole, so O2 is 32g/mole. 50/32 = 1.5625 moles. 1 mole of any gas at stp is 22.4 liters. 1.5625 × 22.4 = 35 liters.

  77. Math help!

    Simplify the expression (n^4)^8 A. n^(48) B. n^(32) C. n^(12) D. n^4

  78. Algebra 1

    Unit 6 lesson 10 linear functions test

  80. Chem

    How many millimoles of glucose are in 500 ml of a 1 M solution? I got 0.0005 millimoles, is this correct?

  81. math

    (05.01)A scale drawing of a kitchen is shown below. The scale is 1 : 20. A rectangle is shown. The length of the rectangle is labeled 4 inches. The width of the rectangle is labeled 5 inches. Show your work to determine the area of the room in square feet.

  82. Social Studies

    1. Which concept did the Maya understand before Europeans did? Architecture Calendars Hieroglyphics The number zero** 2. Which of the following BEST explains how the Mayans adapted their environment? The Mayans developed a nomadic lifestyle to hunt for

  83. Government

    1. "If angles were to govern men, Neither external nor internal controls on government would be necessary." -Federalist paper No. 51 Which of the following supports Madison's belief that internal and external controls on government are necessary? A) The

  85. Social Studies

    Which is an example of how the physical environment helped the Aztecs establish an empire? A. The capital city of Tenochtitlan could be easily defended from attack. B. The active volcanoes kept neighboring peoples from attacking the Aztecs. C. The capital

  86. Physics

    A thin copper rod 1m long has a mass of 50g. What should be the direction of magnetic field and the maximum current in the rod that would allow it to levitate above the ground in a magnetic field of 0.1T.

  87. Computer

    Write an algorithm to calculate the percentage of a student.

  88. History

    1. What is a reason that the Missouri Compromise did not have lasting effects? A. It only applied to the lands of the Luisiana Purchase B. It only applied to the lands of the Mexican Cession C. It relied on popular sovereignty D. It limited the number of

  90. Math

    The following table shows a proportional relationship between w and z. w=18 and z=2. Write an equation to describe the relationship between w and z.

  91. calculus

    If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.) What is the average speed over the given time intervals? (i) [1, 2] (ii) [1, 1.5]

  92. English

    Choose the mood of the underlined verb. 1. (Look) out of the window and tell me what you see. (1 point) indicative imperative*** subjunctive 2. Yosemite National Park (is) a national treasure. (1 point) indicative*** imperative subjunctive 3. If I (were)

  93. math

    jill has 8 yards of cloth. she wants to cut it into pieces that are 1/4 yard long. How many pieces can she cut from the length of cloth

  95. English

    1. James Joyce was a great master of stream of consciousness. simple sentence*** compound sentence complex sentence compound-complex sentence 2. Joyce's, however, owed much to French novelist who had used the technique much earlier. simple sentence

  96. Math

    Which property is illustrated by the statement. (2+3.4) + 6 = 2 + (3.4 + 6) Associative property of addition (i chose this) Commutative property of multipliction Inverse property of multiplication Commutative property of addition I know its not commutative

  97. LA

    1. The tone of the poem "Ka'Ba" versus the tone of the poem "Harlem II" might be described as: A. Grateful vs Ungrateful B. Certain vs Doubtful C. Hopeful vs Defeated D. Safe vs Dangerous 2. The theme of "Your World" can best be inferred from which line?

  98. Math

    Which ratios form a proportion? a. 4/9, 12/25 b. 3/7, 18/42 c. 5/11, 20/45 d. 5/8, 15/25 Which ratio forms a proportion with 18/30? a. 20/35 b. 50/90 c. 36/48 d. 60/100 Which proportion has cross products of 5 x 24 and 8 x 15? a. 5/8=15/24 b. 5/24=8/15 c.

  100. Lang Arts

    1 What is the purpose of the Egyptian pyramids caption(its a story on pearson Etext called Art Architecture and learning in egypt) A. to introduce a supporting detail B. to state a key idea C. to provide details about an image D. to explain specialized

  101. PHYSICS HELP

    A 0.26-kg rock is thrown vertically upward from the top of a cliff that is 31 m high. When it hits the ground at the base of the cliff, the rock has a speed of 29 m/s . a.Assuming that air resistance can be ignored, find the initial speed of the rock . v0=

  102. History please help

    1. Why was it important for Lincoln to wait to issue the Emancipation Proclamation It could have caused revolts in the north It was important to have popular support beforehand It could have ended the rebellion before Union victory It may have caused

  103. Algebra

    The length of shadow of a building is 28m. The distance from the top of the building to the tip of the shadow is 36m. Find the height of the building

  105. American Government

    in the case of schenck vs united states justice oliver wendell holmes jr wrote: "the most stringent protection of free speech would not protect a man in falsely shouting fire in a theatre and causing a panic." this is an example of what kind of rights? a.

  106. Social Studies Lesson 1 Unit 7

    1:Which of the following was a significant innovation of Lowell Mills that increased productivity? A:Combining spinning and weaving in the same factory B:Seperating spinning and weaving to different factories C:Employing mainly formal African-American

  107. SS

    "We seek no conquest. All we ask it to be left alone According to this quote which statement best summarizes the souths agenda A.to continue their way of life unchanged b to accept changes to the plantation system c. to change the souths borders d. to

  108. math

    plss help equation for this statement the distance D travelled by a car varies directly as its speed s

  110. Math, Quadratic equaitons

    A toy rocket is launched form a 3m platform, at 8.2m/s. The height of the rocket is modelled by the equation h=-4.0t^2+8.1t+3 where h is the height, in metres, above the ground and t is the time, in seconds. After how many seconds will the rocket rise to a

  111. history

    1) Which group made up the majority of white Southerners? Planters capitalists middle class small farmers 2. Which is the most likely cause of the spike in cotton production in Mississippi in the mid¬ 1800s shown on the chart? the growth in demand for

  112. physics

    Tarzan plans to cross a gorge by swinging in an arc from a hanging vine. If his arms are capable of exerting a force of 1170 N on the rope, what is the maximum speed (in meters/second) he can tolerate at the lowest point of his swing? His mass is 83.0 kg,

  113. TECH ED HELP

    1. Which of the following is NOT a warning sign of depression that may lead to suicide? (1 point) being sad about your friend moving away 3 days ago a change in appetite for the last 3 months difficulty concentrating for the entire semester quitting all of

  115. sarangz

    a bus weighing 50 tonnes moving with a velocity of 60km/hr.Calculate the force required to stop it in 10 seconds.

  116. math

    The gestation period of humans(266 days) is_________ percent longer than the gestation period of grizzly bears (220 days).

  117. Math

    ∆ABC has the points A(1, 7), B(-2, 2), and C(4, 2) as its vertices. The measure of the longest side of ∆ABC is units. ∆ABC is triangle. If ∆ABD is formed with the point D(1, 2) as its third vertex, then ∆ABD is triangle. The length of side AD is

  118. Kate

    Which of the tax structures do you think is most fair? Why?

  120. Health

    Blood also passes through the small intestine and liver during which type of circulation pulmonary renal portal*** cardiac

  121. math

    A store gets a bucket of eggs for $16.20 and sells a dozen eggs for $3.50. If there are 450 eggs in the bucket, by what percent has the store increased the price per dozen eggs?

  122. accounting

    journalize the earning of services $53,000 on account and then additional $45,000 in cash

  123. science help PLS

    Which of the following types of stars started out on the main sequence with the largest initial mass? In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of

  125. chemistry

    1. Given that 50 grams of ice is heated at -20.0 °C to steam at 135.0 °C. i. Show the graph of the changes from ice to steam ii. Calculate the energy needed to change the ice to steam Please use these values: Heat of fusion = 334.16 J g¯1 Heat of