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  1. Physics

    When a block slides a certain distance down an incline the work done by gravity is 300 J. What is the work done by gravity if this block slides the same distance up the incline? a) 300 J b) zero c) -300 J d) It cannot be determined without knowing the

  2. math

    find the nominal rate of interest convertible quarterly which is equivalent to a nominal rate of discount of 6% p.a. convertible monthly

  3. chemistry

    A tank holds 52.9 cm3 of water. What is the volume in in3? (2.54 cm=1 in, Remember significant figures, but this answer does not need units, since the answer must be in in3)

  5. chemistry

    A student measure 9.43 mL of an unknown liquid in a graduated cylinder. The mass of the empty cylinder is 34.670 g, and the mass of the cylinder and liquid is 44.197 g. What is the density of the unknown liquid? (remember significant figures and units in

  6. dynamics

    The acceleration of a particle is defined by the relation a = -k/x . It has been experimentally determined that v = 15 ft/s when x = 0.6 ft and that v = 9 ft/s when x = 1.2 ft. determine (a) the velocity of the particle when x = 1.5 ft and (b) the position

  7. Language Arts

    What does explicit mean?(1 point) information stated directly xxx information understood from context information that is inferred information that is somewhat vague What is an inference? (1 point) a detail the author provides in a text a conclusion based

  8. Technology

    Which of the following is not an example of malicious code? A. Trojan horse B. worm C. virus D. spy gear**

  10. Physics

    You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 120 N, the sled has an acceleration of 1.7 m/s2 If the sled has a mass of 8.4 kg, what is the mass of your little sister?

  11. math

    1. Which angles are adjacent angles? (1 point) ∠GBM and ∠FBC ∠CBX and ∠FBC ∠XBG and ∠FBC ∠MBY and ∠FBC 2. The measure of ∠3 is 101°. Find the measure of ∠1. (1 point) 101° 106° 74° 79° 3. Is line l parallel to line m? Explain.

  12. social studies

    1. The Kansas Nebraska act continued ideas of which of the following 1. Missouri compromise 2. compromise of 1850 3. free soil party 4. Dred Scott v Sanford

  13. Health

    1. The muscular system is essential because it allows our bones to strengthen contract lengthen move 2. which muscle is attached to a bone by tendons? smooth muscle cardiac muscle skeletal muscle involuntary muscle 3. To prevent injury, each time you

  15. physics

    Water is flowing in a pipe as depicted in the figure. As shown, p = 117 kPa, d = 4.67 cm, d' = 3.06 cm, v = 4.36 m/s, and h = 1.11 m. What pressure is indicated on the upper pressure gauge? Take y = 0 at the bottom of the left pipe so that the center of

  16. Math

    1. Classify the triangle according to side length and angle measurement 2. Classify the triangle according to side length and angle 3. Classify the triangle with side lengths 4,4, and 4 4. Classify the triangle with the measuring 69,42, and 68, 5.

  17. Chemistry

    The density of aluminum is 2.70 g/ml. What is the mass of a cube of Al that measures 2.20 cm on each side?(remember significant figures and to include the units of g in your answer, remember that 1 ml=1 cm3)

  18. Check my answers SS

    Which of the following state program areas consumes the largest part of the executive budget? (1 point) human services education *** natural resources transportation 2. Which state department is responsible for mental health-related issues and welfare? (1

  20. Health

    a main function of the skeletal system is to protect internal organs allow your body to move store and produce materials all of the above

  21. Algebra 1

    Plz help me with the following problems. Simplify. 5^-1(3^-2) Simplify. mn^-4/p^0q^-2 Write a scientific notation. 0.0042 Write in standard notation. 6.12*10^3 Simplify. Write in scientific notation. 0.5(8 * 10^5) Simplify. Write in scientific notation. (9

  22. Language arts

    Question 1 A) Which characteristic is true of a theme?(1 point) It is not stated by the author outright. ***** It is not linked to symbols. It is explained by the author. It is a summary of the plot. Question 2 A) Which description best defines a theme?(1

  23. Language/ Central Idea or Theme Quick Check

    1. Which of the following describes the theme of a story?(1 point) a statement that gives the most important facts of the story a message about life that is explored and expressed the idea that connects the story's parts the key details regarding

  25. Physics

    Figure 1 shows a red car and a green car that move toward each other. Figure 2 is a graph of their motion, showing the positions xg0 = 270 m and xr0 = -35.0 m at time t = 0 (time they intersect =12s). The green car has a constant speed of 20.0 m/s and the

  26. physic

    A sounding rocket, launched vertically upward with an initial speed of 79.0 m/s, accelerates away from the launch pad at 5.70 m/s2. The rocket exhausts its fuel, and its engine shuts down at an altitude of 1.15 km, after which it moves freely under the

  27. Maths

    If the lcm of first 20 natural no. is x then find the lcm of first 25 natural no.

  28. prob&stat

    A starting lineup in basketball consists of two guards, two forwards, and a center. Now suppose the roster has 5 guards, 4 forwards, 3 centers, and 2 "swing players" (X and Y) who can play either guard or forward. If 5 of the 14 players are randomly

  30. Health

    the heart is composed of how many loops

  31. Chemistry

    What will be the freezing point of a solution made by dissolving 5.25 g of naphthalene (C10H8) in 100.0 g benzene (C6H6?). The normal freezing point of benzene is 5.5°C and K f (benzene) is 5.12°C / m.

  32. Algebra 1

    How many two-digit numbers have a tens digit that is greater than the units digit? Explain.

  33. math --- pls check my work!

    help pls asap!!! Check my work! 1. Find the area for the following figure. (trapazoid: bottom base 16.3, top base 5.9, height 4.6) 51.06 m^2*** 74.98 m^2 27.14 m^2 102.12 m^2 2. Find the area for the following figure. (1 point) (triangle: base 20.3, height

  35. calculus

    Water is poured into a conical tank 6m across the top and 8m deep at the rate of 10m/min. How fast is the water level rising when the water in the tank is 5m deep?

  36. math

    Each year a growing tree adds a new ring to its section some years the ring is thicker than others why do you suppose this happens? Suppose the average thickness of growth rings in the Flintstones national forest is 0.5cm about how old is old Fred a famous

  37. Chemistry

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

  38. English

    3. PART B: Which phrase from the text best supports the answer to Part A? A. “intending any mischief” (Paragraph 8) B. “came to do Midas a favor” (Paragraph 8) C. “the stranger gazed about the room” (Paragraph 9) D. “glistened upon all the

  40. 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

  41. 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

  42. Geometry

    Write an equation of an ellipse in standard form with the center at the origin and with the given characteristics: Vertex (-3,0) and co-vertex (0,2)

  43. Chemistry

    Carbon monoxide at a pressure of 1490 mmHg reacts completely with O2 at a pressure of 745 mmHg in a sealed vessel to produce CO2. What is the final pressure in the flask? 2CO2 (g) + O2 (g) -> 2CO2 (g) I thought it was just a simple addition, but it was

  45. Social Studies

    Which factor contributed to Songhai's downfall as a powerful empire? A. a decades-long drought B. its refusal to participate in trade C. internal struggles between rulers D. its geographic isolation from other regions Which factor contributed to the rise

  46. English

    Which of the following sentences from the happy man best supports the theme selected above? (The above theme was -Too much of a good thing can make a person sick) a. "Inside him, he felt a boundless power, an imperishable energy, an ability to achieve

  47. Social Studies

    Heyooo, I’ve finished The Roman and Byzantine Empires Unit Test, and I am relatively confident in almost every answer, but I would like someone to check over my answers for me! I’ll be uber grateful! What steps did the Roman Empire take to expand and

  48. Social Studies

    Question 1: The western Roman empire finally collapsed due to A. attacks by the Persian B. civil wars between army commanders C. attacks by Germanic tribes D. conquest by the eastern empire Question 2: What conditions most directly resulted from the

  50. SAT Math

    If the expression 4x^2/2x-1 is written in the equivalent form 1/2x-1+A, what is A in terms of x? A) 2x+1 B) 2x-1 C) 4x^2 D) 4x^2-1

  51. Social Studies

    Which event spread Islam to India?

  52. Geometry

    Which statement is true? A. All rectangles are quadrilaterals. B. All quadrilaterals are rectangles. C. All quadrilaterals are parallelograms.** D. All quadrilaterals are squares. Can someone check my answer

  53. Algebra

    Find the area of the irregular figure (use 3.14 for pi). SHow your work. Round to the nearest tenth. Triangle with a semi-circle on it. The triangles height is 4.8ft and the circle's diameter is 3.6ft. Every time I do my work I keep getting 12.3 and I have

  55. Can someone check my answer plzzz!!!

    Simplify (6x^-2)^2(0.5x)^4 show your work IS this right?? (6x^-2)^2 * (0.5x)^4 =6^2 x^-4 *(0.5)^4 x^4 =(36 * 0.0625) * (x^4 * x^-4) = 2.25 * x^0 =2.25 *1 =2.25 is this right Can you check my answer?

  56. calculus

    If a ball is thrown into the air with a velocity of 48 ft/s, its height in feet t seconds later is given by y = 48t − 16t2. (a) Find the average velocity for the time period beginning when t = 2 and lasting for each of the following. (i) 0.5 seconds ft/s

  57. Calculus

    Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis. x = 7y^2, y ≥ 0, x = 7; about y = 2

  58. Ed Tech

    1. The _____________ of a story describes the events that take place as well as the conflict or problem that must be resolved. (1 point) characters setting plot timeline 2. The _____________ of a story describes the time and location of a story. (1 point)

  60. math

    1. QTR and ______ are complementary. QTS * RTS PTN QT 2. QTN and _____ are supplementary. QTS QTP * RTS PTR 5. PTN is adjacent to _____. QTR PTS RTS NTS *

  61. Algebra worksheet

    Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've been having trouble with

  62. Trigonometry

    a bicycle with 24inch diameter wheels is traveling at 15mi/hr. a) Find the angular speed of the wheels in rad/min. b)How many revolutions per minute do the wheels make?

  63. Math.

    1. Find the area of the given circle. Round to the nearest tenth. *theres a picture of a circle and the radius is 3.5* A. 22.0 cm *squared* B.38.5 cm *squared* C. 11.0 cm *squared* D. 42.8 cm *squared* 2.Find the circumference of the given circle. Round to

  65. 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

  66. Health And Physical Ed

    1. during the exchange of air in your lungs, oxygen is being taken into your bloodstream while this substance is being released microorganisms carbon dioxide*** plasma mucus 2. the gas exchange of oxygen to the bloodstream takes place in what part of

  67. Ed. Tech

    Which definition below best describes the definition of theme within poetry? A. It is the pattern of rhyming lines within a poem. B. It is the underlying message that a poem conveys. C. It is the pattern of stressed and unstressed syllables in a poem. D.

  68. physics

    What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 0.84 ± 0.04m ?

  70. Math

    The distance require to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many feet are required to stop a car traveling 96 miles per hour!

  71. CALCULUS

    Sketch the region enclosed by the given curves. y = 4/X y = 16x, y = 1X/16 x > 0 and the area between the curves

  72. physics

    A baseball has a mass of about 155 g. What is the magnitude of the momentum of a baseball thrown at a speed of 95 mph?(Note that you need to convert mass to kilograms and miles per hour to meters per second.) Answer in units of kg · m/s

  73. Chemistry

    Calculate the energy change associated with the transition of an electron from the n=2 shell to the n=5 shell in a Bohr hydrogen atom.

  75. physics

    A small sphere of mass m = 7.50 g and charge q1 = 32.0 nC is attached to the end of a string and hangs vertically as shown in the figure. A second charge of equal mass and charge q2 = –58.0 nC is located a distance d = 2.00 cm below the first charge. (a)

  76. physics

    A 15.0-kg test rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of 1961 J by the time the rocket motor burns all the fuel. What additional height will the rocket rise? m - how do you organize this? how do the J's fit in?

  77. calculus

    1. If 3x^2+2xy+y2=2 then the value of dy/dx x = 1 is A. -2 B. 0 C. 2 D. 4 E. not defined

  78. Chemistry chemical equilibrium

    1.25 mol of NOCl was placed in a 2.50 L reaction chamber at 427 celciciu degre . After equilibrium was reached, 1.1 mole of NOCl remained. Calculate the equilibrium constant Kc for the reaction

  80. Math

    Suppose that 8 turns of a wire are wrapped around a pipe with a length of 60 inches and a circumference of 4 inches. What is the length of the wire

  81. phyics (PLEASE PLEASE READ)

    a bicyclist is finishing his repair of a flat tire when a friend rides by at 3.5 m/s. two seconds later, the bicyclist hops on his bike and accelerates at 2.4 m/s^2 until he catches his friend? (a) how much time does it take until he catches his friend?

  82. science

    what happens to washing soda crystals when mixed with sulphuric acid

  83. physics

    A child slides down a hill on a toboggan with an acceleration if 1.5 m/s2^2. If she starts at rest, how far has she traveled in (a) 1.0s,(b) 2.0s, and (c) 3.0s?

  85. English Check

    Online Vs Traditional Dating Thesis : Technology has brought many innovations in human life and one of the greatest is online dating. However, just like Traditional dating, online involves a lot heartbreaks too and both are harmful if done recklessly. In

  86. english/CHECK

    My answers 1) Assail 2)Banal 3)mercenary 4)allusion 5)Taint 6) appease 7)Arbitrary 8)syndrome 9)altruistic 10)euphemism MY OLDER BROTHERS MARK HAS NO LUCK WITH WOMEN, HE GOES INTO ONE OF TWO STYLES OF CONVERSATION. THE FIRST IS TO (1) TAINT HER WITH A

  87. Physics

    Question: The amount of internal energy needed to raise the temperature of .25 kg of water by 0.2 degrees Celsius is 209.3 J. How fast must a 0.25 kg baseball travel in order for its kinetic energy to equal this internal energy? KE = (.5)(m)(v^2) 209.3 J =

  88. Physics

    What is the y-component of a 95.3-N force that is exerted at 57.1 degrees to the horizontal?

  90. LA

    1.Which of the following is plot?(1 point) the sequence of events in a story a lesson the reader learns the author's purpose for writing a story a problem that a character must solve 2.Which word means “the time and place in which a story takes

  91. Language arts

    Question 1 What is dialogue? the words characters say to each other in a story or drama *** the physical descriptions of characters in a story or drama the description of the setting in a story or drama the development of conflict in a story or drama

  92. english

    Question 1 A) Which of the following is a summary of a literary text?(1 point) a list of a story's main points a mix of minor details and main points extracted from a text a shortened version of a work that includes the main points of the story and the

  93. Language Arts

    1. Which of the following best describes text evidence?(1 point) A. ideas or conclusions about details that are hinted at but not stated B. information or details from a text that support an idea or analysis*** C. data on the amount of time it takes to

  95. English

    Which of the following is a theme in a literary text?(1 point) the most important plot events** the most important character a lesson about life Which of the following is the main idea of a story?(1 point) the point of view of the narrator the key details

  96. language arts

    Which option is an example of a subgenre of poetry?

  97. Language Arts 6

    6.2.2 - Quiz: Making Connections: Roll of Thunder, Hear My Cry Quiz How does T.J.’s relationship with Cassie relate to the theme of friendship in this chapter of Roll of Thunder, Hear My Cry? Correct answer D. T.J.’s relationship with Cassie shows that

  98. Geometry

    12. To describe a sequence of transformations that maps triangle ABC onto triangle A''B''C'', a student starts with a reflection x-axis. `How should the student complete a sequence of transformations to map ABC onto triangle A''B''C''?

  100. Mathematics

    A boy has 800 naira. He spend 160 naira. What fraction of his original money does he have left

  101. Math

    Julia is allowed to watch no more than 5 hours of television a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of television Julia can still watch this week?

  102. statistics

    Let the random variable X represent the number of people living in a household in a certain town. The standard deviation of X is 1.8. Which of the following statements is the best interpretation of the standard deviation? A.The number of people living in a

  103. physics

    the tape in a videotape cassette has a total length 256 m and can play for 2.3 h. As the tape starts to play, the full reel has an outer radius of 38 mm and an inner radius of 13 mm. At some point during the play, both reels will have the same angular

  105. Social studies

    What major difference between the Eastern and Western churches led to their schism? A. They disagreed about the divinity of Christ. B. They disagreed about the use of icons. C. They disagreed about Church leadership and authority. D. They disagreed about

  106. Math help!

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

  107. Science

    1. How does Earth’s rotation cause day and night? (1 point) As Earth rotates toward the east, the sun appears to rise in the west and set in the east. As Earth rotates toward the east, the sun appears to rise in the east and set in the west. Earth

  108. Physical Education

    1. Decide which of the following physical activities incorporates stretching on a regular basis? (1 point) 2. (Blank) stretching is now considered to be dangerous (1 point) 3. Which of the following is a lower body stretch? (1 point) 4. Which of the

  110. Math

    Ed is planning to put up a rectangular garden with a fixed area of 120m^2. If the dimension of the garden have to be whole numbers,determine the dimension that will require the least amount of fencing materials to enclose the garden.

  111. Algebra

    if (x,y) is a solution to the system of equations above and x > 0 what is the value of x? y-x^2 +2 = 9x y = 4x + 4 What is the value of y in the solutions of the system of equations above? 8x-4y =7 5y - 4x = 10

  112. Social studies help PLEASE

    Which of the following factors helped trade to thrive during the Roman empire? Select all that apply. A. peace throughout the empire B. a shared religion throughout the empire

  113. english

    Which is correct: (Who, Whom) are you going to the park with? A. Who B. Whom I think its whom?

  115. maths

    Prove SinA/1-CosA = CosecA + CotA

  116. alebra

    Let f(x)=2x^2+x-3 and g(x)=x-1. Perform the indicated operation then find the domain. (f*g)(x) a.2x^3-x^2-4x+3; domain:all real numbers b.2x^3+x^2-3x; domain: all real numbers c.2x^3+x^2+4x-3; domain: negative real numbers d.2x^3+x-3x+3; domain: positive

  117. Maths

    The 14th term of an A.P is 96,while 25th term is 173 find the ,19th term,sum of 13th and 56th terms,product of 6th and 13th terms.

  118. math

    Diagonal of a rhombus are in the ratio 3:4. If its perimeter is 40cm, find the length of the side and diagonals of rhombus

  120. Art

    Im having trouble with this quiz and I need your help. I have tried my best to answer them and this is what I got. 1. Which of the following best characterizes the new kingdom? A.political strength and cultural change in Egypt. B. It represents the period

  121. Health. Check my answers please

    Can someone please check my answers. 1. Violence resulting in the death of another person is called A. Bullying B. Homicide C. Conflict D. Rape 2. Using the excitement of violence to keep video games users playing their games is an example of which risk

  122. science

    Which combination of sex chromosomes results in a male human being? 1 XX 2 YY 3 XY 4 either XX or YY is it a?

  123. Social Studies

    What was Alexander Hamilton’s main reason for insisting that all the nation’s debts must be paid in full?

  125. Physics, fluid mechanics

    The temperature of earth atmosphere drops 5°C for every 1km elevation above the earth surface. If the air temperature at ground level is 15°C and 760 mmHg, determine the elevation in m when the pressure is 380 mmHg. Assume the air is an ideal gas with