Questions Asked on
September 25, 2014

  1. chemistry

    Calculate how many grams of the first reactant are necessary to completely react with 55.8g of the second reactant. Na2CO3 + CuCl2 → CuCO3 + 2 NaCl

    asked by Cristin
  2. Physics

    Two light bulbs of resistance R1 and R2 (>R1) are connected in a series. Which is brighter? What if they are connected in parallel?

    asked by Prakash Padukone
  3. Math (Quadractic function)

    Hi can you help me find the solution for this one? I have the answers at the end but I want to study how did it end with that. Thanks :) The number N of bacteria in a refrigerated food is given by N(T) = 10T^2 - 20T + 600, 1 ≤ T ≤ 20 where T is the

    asked by CLINT
  4. English

    6. Which of the following sentences contains an abstract noun? A. They did a good job planning the party. B. Respect must be earned. C. She thought we should have left earlier. D. I hope that we are not late.

    asked by Sarah
  5. Maths

    The 90 members of a sports club play at least one of the games,tennis,football and volleyball. 10 play tennis and football,19 play football and volley ball,and 29 play tennis and volley ball. n people play all three games. 2n people each play only one

    asked by Suleiman
  6. Calculus

    A man standing 9 feet from the base of a lamppost casts a shadow 6 feet long. If the man is 6 feet tall and walks away from the lamppost at a speed of 30 feet per minute, at what rate, in feet per minute, will his shadow lengthen?

    asked by Mike Nguyen
  7. Science! Help!!

    What would happen if gametes were not haploid? A. If gametes were not haploid, the offspring would have half the number of chromosomes it is supposed to have. B. If gametes were not haploid, the offspring would have double the number of chromosomes it is

    asked by Gwen
  8. Physics

    A stone is tied to a string (length = 0.700 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the

    asked by Anon
  9. Chemistry

    Deduce the number of nitrogen atoms in: 5.00 x 10^-3 mol of ammonia, NH3 and 4.601 g of nitrogen dioxide, NO2

    asked by Syndra
  10. Trigonometry

    The wheels of a scooter have a diameter of 4.5 inches. If the person riding the scooter is traveling down hill at 15.0 mph. what is the approximate angular speed of the wheels in radians per second

    asked by Bob
  11. math

    A boy of height 95 cm is walking away from base of a lamp post at a speed of 1.5 m/s.If the lamp post is 3.8 m above the ground, find the length of his shadow after 5 seconds.

    asked by sherry
  12. business

    Suppose that Paulie and Vinny each can produce ice cream or t-shirts. it shows the quantity of each good that Paulie and Vinny each can produce in one hour, respectively, if they devote all of their time and effort into making the good. paulie can make 3

    asked by arthur
  13. science

    which of the following is an example of an effect of natural selection. A. all of the children of two parents are male. B. carbon cycles through ecosystem. C. favorable environmental conditions cause an increased food supply. D. polar bears have white fur.

    asked by Rima

    a person starts writing all 4 digit numbers .how many times had he written the digit 2

    asked by devi
  15. physics

    What is the pressure exerted on the ground by a cube which has a weight of 600N and a side of 1m2

    asked by Wesley
  16. Engineering Dynamics

    A ball is thrown so that the motion is defined by the equations x=5t and y=2+6t-4.9t^2, where x and y are expressed in meters and t is expressed in seconds. a) find velocity at t=1s, b) find the horizontal distance the ball travels before hitting the

    asked by James
  17. algebra

    a motorboat left a harbor and traveled to an island at an average rate of 12 knots, the average speed on the return trip was 10 knots. If the total trip took 8.8 hours, how far is the harbor from the island?

    asked by Barbara
  18. World History (Please, help me!)

    What did Rousseau mean when he stated that if any individual wants to pursue his own self-interest at the expense of the common good, "He will be forced to be free"?

    asked by Victoria
  19. MATH

    1. WHICH SYMBOL WILL MAKE THE NUMBER SENTENCE -|16| ? 16 TRUE? A. = **** B. < C. > 2.WHICH SET OF NUMBER IS FROM LEAST TO GREATEST A. 7,|-4|,-7,0,-|3|,3 B. -|3|,-7,0,3,7,|-4| C. -7,-|3|,0,3,|-4|,7 D. 7,|-4|,3,0,-|3|,-7 3. WHICH SYMBOL WILL MAKE |-6| ? -6

    asked by HELP ME 911
  20. Algebra 2

    Am I correct? The radius of a cylinder is 3x – 2 cm. The height of the cylinder is x + 3 cm. What is the surface area of the cylinder? Use the formula A = 2pi r2 + 2 pi rh. 2spi (3x2 + 10x – 8) 2 pi (12x2 + 7x-2) 2 pi (12x2 -2x +13) my answer 2 pi

    asked by Sandra
  21. English

    Learning About Short Stories Identify the letter of the choice that best answers the question. Which of the following most accurately identifies the usual length of a short story? A. 100 to 200 words B. 200 to 1,000 words C. 500 to 10,000 words D. 50,000

    asked by Asther
  22. math

    Farmer john has hens, geese, ducks, and two goats the number of hens equals the number if geese and ducks combined . There are 5 fewer geese than ducks. If the total number of animals is 40 how many are ducks

    asked by angel
  23. Physics

    A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one-ninth of its

    asked by Anon
  24. Algebra 1

    A teacher knows that 80% of her students will score no more than 5 points above or below the class average, 85%, on the test. Which inequality represents the test scores of 80% of her students? a. 75

    asked by Jack
  25. Algebra 1

    In order to earn an A in a class, your test scores must average at least 92%. On the first 6 tests, you have an average of 91%. What score do you need to get on the last test to earn an A? Show your work.

    asked by Jack
  26. algebra

    The cost, c(x) in dollars in per hour of running a certain fishing boat is modeled by the function c(x)= 0.9x^2 - 18.1x + 135.1, where x is the speed in km/hour/ At what approximate speed should the boat travel to achieve minimum cost?

    asked by Sarah
  27. Algebra 1

    A student reads an average of 34 pages per day. The number of pages she reads per day varies from the average by up to 8 pages. a. Write an absolute value inequality that represents the range of the number of pages she reads per day. b. Solve your

    asked by Jack
  28. math

    two students are playing a math game . the object of the game is to make the least possible number by arranging the given digits inside absolute value bars on a card . in the first round , each player will use the digits 3,5,and7 to fill in the card. One

    asked by elena
  29. Maths

    solution if x=cosec A + cos A and y=cosec A-cos A then prove that (2/x+y)sqare+(x-y/2)sqare-1=0

    asked by Love
  30. Maths

    The 90 members of a sport club play at least one of the games,tennis,football and volleyball. 10 play tennis and football,19 play football and volley ball,and 29 play tennis and volleyball. n people play all three games. 2n people each play only one game.

    asked by Suleiman

    Please and thank you :D 1.A 2.B 3.B 4.B 5.B 6.C 7.C 8.B and C 9.D 10.B 1.Who is most likely to study written records? A.historians B.archaeologists C.geologists 2.Which is a primary way an archaeologist would decide where a temple stood? A.evaluating clues

    asked by Matt
  32. Math-please check

    The supershots scored over 75 points in each of ten straight games. The newspaper predicts that they will score more than 75 points tonight. Which form of reasoning is this conclusion based on? A. Deductive reasoning, because the conclusion is based on

    asked by Anonymous
  33. history

    In the 1800s, the US established forts west of the Mississippi River from Louisiana to Minnesota to establish peace among warring American Indian tribes and to __________. A. provide American Indians with funds and goods for their survival B. strengthen

    asked by katt<3bobby
  34. chemistry

    If someone has the time to help with the following question it would be really helpful. The problem is 209/83bi+64/28NI=272/111Rg+1/0n How to calculate the energy change in J/mol reactants? AMU amounts: Bi=208.980384 Ni= 63.927969 Rg=272.1535 What I have

    asked by Nancy
  35. Math

    Scores on a marketing exam are known to be normally distribute with mean and standard deviation of 60 and 20, respectively. The syllabus suggests that the top 15% of the students will get an A in the course. What is the minimum score required to get an A?

    asked by Sam
  36. government

    what inspired the Constitutional Convention in 1787

    asked by anonymous

    1. WHICH OF THE FOLLOWING DESCRIBES AN ACCOMPLISHMENT OF GEORGIA'S ROYAL GOVERNORS A. improved defense of the colony B. Increased land for settlement C. Organized the colony into parishes D. ALL OF THE ABOVE ** 2. WHICH OF THE FOLLOWING ISSUES IS NOT

    asked by HELP ME 911 MS. SUE
  38. Science! URGENT

    How might sexual reproduction decrease an organisms chance of survival? A. If the offspring inherits a genetic combination that includes a harmful trait, it could decrease the organisms chance of survival. B. If the offspring inherits the exact sane

    asked by Gwen
  39. marketres

    which is not par of the ethical decision making framework

    asked by alvist
  40. Chemistry

    Use solubility rules to write the balanced molecular, complete ionic, and net ionic equations for the aqueous reaction between BaI2 and Hg(NO3)2. Include phase subscripts on all substances. I got to the part where you switch the elements Ba(NO3)2 +HgI2 I

    asked by Feather
  41. calculus 1

    a ladder 20 ft. long rests against a vertical wall.If the bottom of a ladder slides away from the wall at a rate of 4 ft./sec, how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 12 ft. from the wall? x^2 +y^2 = 20^2

    asked by hasel
  42. Calculus

    It is known that the quantity demanded of a certain make of portable hair dryer is x hundred units/week and the corresponding wholesale price is shown below where p is in dollars. p = sqrt(225 - 5x) The supplier will make x hundred units of hair dryers

    asked by Andre
  43. math

    word problem--If car A is going 50mph and is 15miles ahead of car B who is going 60mph, how long will it take car B to catch up with other? 50x+15=60 -15=15 50x=45 x=10 -

    asked by toi
  44. Physics

    Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.40 m/s, while the speed of the current is 2.2 m/s. If it takes the swimmer 200 s to cross the river, how wide is the river

    asked by Judy
  45. History

    Who are Abraham, Moses, and Noah to Christians, in a single word?

    asked by Anonymous
  46. Physics

    Speedboat A negotiates a curve whose radius is 100 m. Speedboat B negotiates a curve whose radius is 221 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats?

    asked by Steve
  47. math

    1. 3w - 10w A, 13w B. -7w** C. -7 D. 7w 2. y + 2y + 3z A. 2y + 3z B. 3y + 3z C. 2y^2+3z D 6yz 3. 6r + r - 5r A. 2r B.1r + r C. 0r D. 7r - 5r 4. 5x + 2(x + 6) A. 7x + 6 B. 7x^2 + 12 C. 7x + 12 D. 7x (x + 6) 5. -3m + 3(m +6) A. 6 B.-6m + 6 C. 6m + 18 D. 18

    asked by HELP MEEEEE
  48. statistics

    A nutritionist was interested in determining the smoking status of her clients. She asked each of her clients to report his or her current smoking status: Smoker, Ex-Smoker, and Non-Smoker. Which of the following graphical techniques is the best way for

    asked by shelly
  49. Math conversion


    asked by Elle
  50. chemistry

    The radius of a niobium atom is 131 pm. How many niobium atoms would have to be laid side by side to span a distance of 4.53 mm? atoms

    asked by estefania
  51. chemistry

    caculate the number of moles of magnesium ions in 5.5g magnesium phosphate

    asked by newsome
  52. Chemistry

    Given: CH4 + 2O2 ~ CO2 + 2H2O C - H = 99 kcal O - O = 119 kcal C = O = 192 kcal O - H = 111 kcal Calculate the change in energy for the CH4 - O2 system.

    asked by Rainey
  53. Chemistry

    The name given to the geometric arrangement of the reacting species at the time of reactions is called --------------------?

    asked by Anonymous
  54. English

    Though it is a history essay, my question has to do with writing and essay. The following is what I submitted for an essay and was told it was good but it lacked an introduction and thesis. My first paragraph is what I thought was a sufficient introduction

    asked by c
  55. Physics

    A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.25 and the push imparts an initial speed of 6.0m/s?

    asked by Whitney
  56. physics

    A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?

    asked by vicki
  57. math...

    A. Solve a-9=20 I did 20+9=29 29-9=20 a=29 Part b solve b-9>20 I did b-9>20 b-9+9>20+9 b>29 Part c how is solving the equation in part a similar to solving the inequality in part b? I put They are both using the same numbers. Part D I put A is equal to and

    asked by Anonymous
  58. science

    Why did a portion of the tabletop get cold when Natasha placed her cold drink on the table? (1 point) The table’s molecules were vibrating more slowly in that area. The table’s molecules had spread further apart in that area. The table’s molecules

    asked by Connie
  59. AP Physics

    An ice skater skates 28 m southwest, then 56 m east, and finally 84 m in a direction 50.3 ◦ north of east.Find the magnitude of the displacement required to bring the skater back to her starting point. Answer in units of m

    asked by josselin
  60. Math

    Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

    asked by Tech N9ne
  61. Chemistry

    I've been trying to figure this problem out all day and I STILL don't know how to solve for the specific heat constant. I blank after I set up the problem. Somebody please help me!!! What is the specific heat constant if 621 g of Metal A raises the

    asked by Lilly
  62. Math

    What is ^4 square root 1280r^8 t^12 in simplified form?

    asked by Alex
  63. chemistry

    The heat lost or gained by a system is related to its temperature change by a property called its heat capacity. The molar heat capacity of metals at or above room temperature equals 24.92 J/K.mol. The temperature of a block of lead (MM 207.2) was raised

    asked by korko
  64. algebra

    How do I graph x

    asked by Janet
  65. algebra

    can you help me with the Lesson 9: Operations and Applications of Scientific Notation Connections Education 1205070 M/J PRE-ALG - T1 Unit 2: Rational Numbers test.What is the product of (5.1*10^3)*(3.2*10^3)? (please express your answer in scientific

    asked by jasmine
  66. Math

    State the side length of a square with an area of 27 cm2 in simplified radical form.

    asked by Alex
  67. chemistry

    A 23.0-g sample of an unknown metal is heated to 91.5°C and is placed in a perfectly insulated container along with 102.g of water at an initial temperature of 21.80°C. After a short time the temperature of both the metal and water become equal at

    asked by korko
  68. English

    I have posted two essays recently and have received no response, one was only a few hours ago but the other one was over 10 days ago....pls help with the one from two hours ago or let me know if you are unable to help. thanks

    asked by c
  69. physics

    The half life period of radium is 1600 years.In how many years 1 gram of radium lose 1 centigram??

    asked by Priyanka
  70. physics

    Consider the following specific case of the system described in the example above. Suppose the angle θ is 78.0° and the mass of the ball is 7.00 kg.

    asked by Anonymous
  71. Match

    justine has 162 red buttons,98 blue buttons,and 284 green buttons. she says she knows she has more than 500 buttons without you agree? explain.

    asked by Jay
  72. business

    Students buy significantly more ice cream filled cakes after the cake producer announces it is going bankrupt shift of the demand curve or movement along the demand curve

    asked by kussmodar
  73. business

    college students rush and buy discount furniture to take advantage of a one day sale shift of the demand curve or movement along the demand curve

    asked by kussmodar
  74. business

    college students purchase many more energy drinks during finals week than during the rest of the semester shift of the demand curve or movement along the demand curve

    asked by kussmodar
  75. business

    Students eat more often as the federal government increases how much grant money it provides students shift of the demand curve or movement along the demand curve

    asked by kussmodar
  76. Algebra 2

    We have opposing answers, can you help? What is the simplified form of (2x2 + 4x – 3)(3x + 1) ? 6x3 + 10x2 – 5x + 3 * 6x3 + 14x + 5x – 3 6x3 + 14x2 – 5x – 3 my answer 6x3 – 10x2 – 5x – 3*

    asked by Sandra
  77. trignometry

    prove that the area of any triangle XYZ is y^2*sin(x)*sin(z)/2*sin(y)

    asked by Sara
  78. Math

    Why would you use square roots in the following question: Chang is participating in a charity bicycle road race. The route starts at Centreville and travels east for 13 km to Eastdale. He then makes a 135° turn and heads northwest for another 18 km,

    asked by Alex
  79. Math

    While hiking, Kristen went up 300 feet. If Kristen started at 100 feet above sea level, what is her elevation now? I need help with this question?

    asked by Daniella
  80. Chemistry

    PLEASE help because I'm really confused on how to do the entire thing. I don't know how to find the mL. Am I suppose to do anything with the 250mL? A person stops in every day and orders 250 mL of house coffee at precisely 95°C. but enough milk at 10°C

    asked by Chad
  81. Physics

    A hanging block of mass X is pressed with a force F at angle theta to the vertical against a frictionless wall and is connected to another hanging block of mass Y by a pulley system. What is the expression for the acceleration of Y?

    asked by Anonymous-Please Help!
  82. English

    Literary Analysis: Character and Characterization Read the selection. Then, answer the questions that follow. People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear

    asked by Asther
  83. Algebra

    How do you solve the equation by taking square root 7p^2+16=2151

    asked by NEED HELP
  84. Language

    Which type of pronoun is being used in this sentence? 1. Jenny told her friends that someone was coming over this afternoon. 2. Who is going to make dinner tonight?

    asked by dddd47905
  85. Algebra

    In a sports poll, 53% of those surveyed believe their high school football team will win the state championship. The poll shows a margin of error of +-5 percentage points. Write and solve an absolute value inequality to find the least and the greatest

    asked by Jack
  86. Math--3 questions. Plz help.

    3. Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) +

    asked by Princess Anna
  87. Financial Math

    A young executive deposits $400 at the end of each month for 9 years and then increases the deposits. If the account earns 6%, compounded monthly, how much (to the nearest dollar) should each new deposit be in order to have a total of $400,000 after 25

    asked by Tom Newin
  88. physics

    A parachute on a person jumping from a plane opens and changes the speed of the person from 65m/s to 35m/s in a period of 4.2 seconds. What is the acceleration of the person?

    asked by vicki
  89. Oceans

    (I think I'm supposed to use residence time?) About 30,000 years ago, during the last glacial maximum, glaciers and ice sheets stored enough water to decrease the sea level by 120 m. Presently, there are about 3.05x106 km3 of ice contained within the

    asked by Sam
  90. English

    I think it is B or C because you have to add ed to the word (finish) and (gather) to make it sound right and make sense.

    asked by Sarah
  91. Geography

    5 Factors that affects Tuareg peoples lifestyle.

    asked by djdon
  92. math

    Can 50/99 be simplified

    asked by jealisa
  93. government

    what inspired the constitutional convention? is it the article of confederation? when people saw it was inadequate and pretty much realized that it was useless. they had no power to regulate domestic affairs, no power to tax, etc also the rebellious

    asked by anonymous
  94. Chemistry

    I'm really confused about how to do these two problems. Please help me. What is the amount of heat (kJ) required if 64.0 kg of H2O is heated from 25°C to 85°C? 200.0 g Al (C = 0.900 J/g × °C) at 95°C is added to 85.4 g H2O at 25°C. What is the final

    asked by Leah
  95. HISTORY 2

    6. which of the following does NOT describe women's work in early Georgia A. Planting and tending a home garden B. Working at the local hospital C. Making clothes for the family D. Taking care of the children** 7. which of the following groups of new

    asked by HELP ME 911 MS. SUE
  96. Physics 1

    A block is given an initial velocity of 9.00 m/s up a frictionless incline of angle θ = 21.0°. How far up the incline does the block slide before coming to rest?

    asked by Julie
  97. English

    1. His hardest decision was not to go abroad. 2. His hardest decision wasn't to go abroad. 3. His hardest decision was / not to go abroad. 4. His hardest decision was to not go abroad. ================= #1 is a little difficult to comprehend. Sentence 1

    asked by rfvv
  98. physics

    If one walks straight up a 10 degree incline, what is the height achieved after walking 10 kilometers ?

    asked by djon
  99. Science! URGENT

    Bacteria can reproduce through asexual or sexual reproduction. Environmental conditions for a particular bacteria species are good and the bacteria are thriving. Which form of reproduction will the bacteria most likely use? A. The bacteria will most likely

    asked by Gwen
  100. physics

    what physics topics affect a laser surgeon?

    asked by anonymous
  101. science

    what volume occupy 90g/

    asked by cody
  102. Please math help

    A: I am choosing an integer. I then subtract 10 from the integer, take the opposite of the result, add -3, and find the opposite of the new result. My result is -3. What is the original number? B: Judy wants to do the activity in part (a) with her

    asked by KG
  103. Chemistry

    Please help me! I do not know what to do. 500.0 g ethyl alcohol at 25°C (C = 2.46 J/g x °C) absorbs 74.0 J of heat energy. What is the final temperature? What is the specific heat constant if 621 g of Metal A raises the temperature of 500.0 g of water by

    asked by Kate
  104. math

    Hawaii's lowest temperature on record is -11degrees Celsius. What would you expect to be true about the elevation of the site where this temperature was measured.

    asked by KG
  105. Urgent geometry help

    What would be the converse of the ihop saying " come hungry leave happy" This was my if then statement: if you come hungry then you will leave happy. And for my converse I had: if you leave happy then you came hungry. ***is this right? Is it okay to to not

    asked by Anonymous
  106. Algebra

    In the metric system there are two official temperature scales: degree Celsius and kelvin. The kelvin temperature scale is obtained by shifting the Celsius scale so of any heat whatsoever. An equation about the relationship between the two scales follows:

    asked by KG
  107. Chemistry

    Anyone know how to go about the problem? I don't know how to do it. Assume a professor has a daily special request for her coffee. She likes to have the 250.0 mL of coffee frozen at -15.0°C overnight and then wants it heated to 95°C when she gets there

    asked by Josh
  108. Math! URGENT

    -9-6(w+5) Simplify this expression A. -15w+5 B. -15w+30 C. -6w-39 D. -6w+21 Is the answer C?

    asked by Gwen
  109. Physics

    Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 1.9-kg projectile from rest to a speed of 5.1 × 103 m/s. The net force accelerating the projectile is 8.6

    asked by Sam
  110. gemetry

    How does the volume of a cone change when the radius is quadrupled and the height is reduced to 2004-06-01-04-00_files/i0300000.jpg of its original size

    asked by ciara
  111. Math questions?

    Write a numerical expression to represent the following: Margot took $45 with her to the amusement park. She spent $20 on lunch and spent $5 to rent an inner tube. Then find the sum. 45 + (–20) + (–5); 15 45 + (–20) + 5; 30 (–45) + (–20) +

    asked by Princess Annna
  112. trignometry

    prove that the area of any triangle XYZ is y^2*sin(x)*sin(z)/2*sin(y)

    asked by Sara
  113. History

    in what ways do we rely on agriculture today

    asked by Anabelle 🙏
  114. Math

    For the given point and line, find by projection the point on the line that is closest to the given point and use perp to find the distance from the point to the line. P (3,-5) line: x = (2,-4)+t(3,-4)

    asked by Wes
  115. physics

    A grocery sack can withstand a maximum of 230 N before it rips. will a bag holding 15 kg of groceries that is lifted from the checkout counter at an acceleration of 7.0 m/s^2 hold? this question has to do with force. thanks..

    asked by janelle
  116. Math! URGENT

    Solve the inequality -5p>-30 A. p>6 B. p-35 D. p

    asked by Gwen

    length of AB,BC of scalene triangle ABC are 12,8 rerspectively.the size of angle is 59degree.find the length of side AC

    asked by PUNAM
  118. physics

    if a man moving away with the speed of 0.5 of sound from a stationary sound source producing a sound of frequency , he would hear a sound of frequency

    asked by sara
  119. physics

    Two stones one at equator and the other at poles are allowed to fall from same height and at same time.which one will strike the ground first?

    asked by sukriti
  120. English

    skip 1. to not do or have something;avoid 2. not to do or have something;avoid --------------- What is the definition of 'skip'? Which one is right, #1 or #2 as the definition?

    asked by rfvv
  121. Math Help.

    Which inequality matches the graph. The dot is on the 1 and is a filled in circle with the arrow going to -4. A. 3x+1>4 B. 3x+1>/4 C. 3x+1

    asked by Gwen
  122. ALGEBRA 2


    asked by Argenia
  123. ALGEBRA 2

    'OR" COMPOUND INEQALITY 1-X>_-3 OR 5X - 1 > 19

    asked by Argenia
  124. Physics

    I believe this is a projectile motion problem with the angle = 0 degrees. A ball is thrown horizontally from the roof of a building 7.5 m tall and lands 9.5 m from the base. What was the ball's initial speed? How would I start off this problem? Or set it

    asked by Lilian
  125. Please Help! Math

    How to find the center and radius of a circle using 3 points... My 3 points are (2,8) (-4,6) (1,-1) I found the Equation of the perpendicular bisector of the line between the first and second point which was y=(3/2)x + 5 And the Equation of the

    asked by B
  126. physics

    the volume v of a sphere of radius r is given by v=4/3pie r^3 what is the fractional change in v for a fractional change in r

    asked by mark
  127. chemistry

    The specific heat capacity of gold at 25°C is 1.290×10-1 J/g/K. For a 5.25×102 g sample of gold, how much will the temperature increase if 6.908×102 J of energy is put into the system? (Assume that the heat capacity is constant over this temperature

    asked by korko
  128. Physics

    When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 852 N and the drag force has a magnitude of 1012 N.

    asked by jeff
  129. physics

    the volume v of a sphere of radius r is given by v=4/3pie r^3 what is the fractional change in v for a fractional change in r

    asked by newton
  130. chemistry

    The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1182 g of salicylic acid, in the presence of excess oxygen, causes the

    asked by korko
  131. maths

    (Multiplication under distributive property) 26*(48)+(-48)*(-36)

    asked by anamika
  132. physics

    a trolley of mass 40kg us pushed up a hill of height 10m at an angle of 20 degree. calculate the force required to reach this height. how do i complete this question?

    asked by jordan
  133. Chemistry

    5.0 grams of solid Ce2(SO4)3 was added to 100 mL of water. What is the total mass?

    asked by Luc

    factor 9-6x-3x^2 The expression x^2-8x+k cannot be factored if k has the value A.)7 B.)0 C)-7 D)-9 Please show me how to do these questions step by step so that I can understand & learn

    asked by Bella
  135. English

    1. Forgive me. I didn't know that. 2. Excuse me. I didn't see you there. 3. Pardon me. I made a mistake. (Are they all grammatical, showing 'forgiveness'?) 4. I swear that I will never leave you. 5. I swear to God that he will never leave you. 6. I swear

    asked by rfvv
  136. English

    Why did n't you do your homework? 1. I'm sorry, but I was very tired yesterday. 2. Excuse me, but I forgot to do homework. 3. Forgive me, but I was very busy caring for my mother in hospital. ------------------- Are the answers all grammatical? What other

    asked by rfvv
  137. english

    What is a telephone alarm card in f451? Did the citizens report other that had books by calling?

    asked by english
  138. Math! URGENT

    Describe the number of solutions for the equation. 5(x-9)=5x A. No solution B. One solution C. Infinite solutions Is the answer B? Thank You for any help.

    asked by Gwen
  139. floral design

    You’ve been asked to create four bridesmaids’ bouquets for an upcoming fall wedding. The wedding will be held outdoors on a farm next to hayfields and an old, red country barn. The bridesmaids will be wearing dark cranberry dresses. The bride asks you

    asked by lupe
  140. English

    1. He was ashamed of having no money. 2. He was ashamed to have no money. 3..He was ashamed because he had no money. (Are they all the same and grammatical? Can we substitute 'shy' for 'ashamed'?)

    asked by rfvv
  141. English

    Find the complete subject and complete predicate. It was the distance from the elbow to the tip of the middle finger.

    asked by Hope
  142. Math! URGENT

    Describe the number of solutions for the equation. -2(x-1)=2x-2 A. Infinite solutions B. One solution C. No solution Is the answer B?

    asked by Gwen
  143. English

    1. She swore that she had nothing to do with it. 2. She vowed that she had nothing to do with it. 3. She bet that she had nothing to do with it. (Are they all grammatical? In meaning, are they the same?)

    asked by rfvv
  144. English

    1. I have a staff who works for me. 2. I have a staff who work for me. 3. I have a staff of one who works for me. 4. I have a staff of ten who work for me. 5. I have ten staff who work for me. 6. I have ten staffs who works for me. 7. I have ten step

    asked by rfvv
  145. physics

    Is momentum conserved when 2 carts having the same mass & the same speed collide, stick together and stop? what about the velocity

    asked by mathew
  146. English

    What rites of passage do individuals confront in the selection my brothers keeper?

    asked by Alex
  147. English

    1. The staff meeting will be finished next Tuesday. 2. The staff meeting will be finished in two hours. 3. The staff meeting will be finished after two hours. 4. The staff meeting will be finished tomorrow. 5. The staff meeting will be finished by

    asked by rfvv
  148. physics

    A duck has a mass of 2.2 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.12 N in a direction of 50° south of east. When these forces begin to act, the velocity of the

    asked by Yiah
  149. English

    1. Why don't you go to the park together? - Because I am too tired. 2. Why don't we go to the park together? - Because I am too tired. 3. Why didn't you go to the park together? - Because I was too tired. 4. Why didn't we go to the park together? - Because

    asked by rfvv
  150. Finite

    A box contains 8 blue balls, 3 white balls, and 5 red balls, and that we choose two balls at random from the box. What is the probability of neither being blue given that neither is white?

    asked by Jess
  151. physics

    a compound consist of carbon,hydrogen and oxygen only.the percentage by mass are carbon 40.0% and 6,7% hydrogen.calculate the empirical formulae

    asked by ellen
  152. math

    Evaluate the following expression using BODMAS rule (90/3*3+5)/(-2*3+9)

    asked by vijay
  153. ECE 201

    Why is it important for teachers to understand students’ culture and backgrounds in an effort to address challenging behavior?

    asked by Lena
  154. History

    What are some similarities between the prayers of Islam and Christianity?

    asked by Anonymous
  155. Physics

    4. A ball is kicked toward a fence from a point 32 meters away. The velocity of the ball as it leaves the kicker’s foot is 24 m/s at an angle of 37 degrees above the horizontal. The top of the fence is 2.0 meters high. Assuming air resistance to be

    asked by John
  156. math


    asked by Dhananjay
  157. science

    what is the way that an organism either builds up or breaks down materials in the body for energy

    asked by avery
  158. math...

    Graph.. the circle is on 2 and is an open circle. Which inequality matches the graph? A. 6w+6>18??? B. 6w+6>=18 C. 6w-6>18 D. -6w+6>14 The answer is A right?

    asked by Anonymous
  159. statistics

    In a school election, 5 people run for student body president. The actual number of votes for each candidate would be a ___ variable. If the total number of votes were removed and the candidates were listed in order of least to most popular, this would be

    asked by mike
  160. life orientation

    life orientation-what is the factors that cause contemporary social issues

    asked by tukz
  161. Algebra (Quadratics)

    The height y (in feet) of a baseball thrown by a child is y = -1/10 x^2 + 3x + 6 where x is the horizontal distance (in feet) from where the ball was thrown. Will the ball fly over the head of another child 30 feet away trying to catch the ball? (Assume

    asked by Ruth
  162. math

    Is 3/7 greater or less than 15/56

    asked by Gilbert
  163. Physics

    Traveling at a speed of 16.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of the automobile after 1.20 s have elapsed?

    asked by Steven
  164. Physics

    Air rushing over the wings of high-performance race cars generates unwanted horizontal air resistance but also causes a vertical downforce, which helps the cars hug the track more securely. The coefficient of static friction between the track and the tires

    asked by Steven
  165. comm/215

    how do i make one sentence subordinate to the other. sentence: People know they are going to have to retire. They often don't save enough money to do so comfortably. is this correct?: although people know they are going to have to retire, they often don't

    asked by tiny
  166. Physics help please

    A gamma ray with 700KeV energy is Compton-Scattered from an electron. Find the energy of the photon scattered at 110 degrees, the energy of the scattered electron, and the recoil angle of the electron. i found the photon energy using compton scatter

    asked by Sarah
  167. Math

    0.34divided by 100

    asked by Noor
  168. math...

    Solve b-9>20 I did 29-9>20 But I'm not sure that's right.

    asked by Anonymous
  169. statistics

    In a school election, 5 people run for student body president. The actual number of votes for each candidate would be a ___ variable. If the total number of votes were removed and the candidates were listed in order of least to most popular, this would be

    asked by shelly
  170. History

    Did Christians convert others using force?

    asked by Anonymous
  171. P5 Science - Energy

    Need help.. Why do you think the other part of the leaf did not contain starch?

    asked by J.Sarah
  172. ps 84

    rewite you can bake a potato with the rays of the sun on a very hot day as an imperative sentence

    asked by maria
  173. History

    This time, I'm going for a change! Not dddd47906! What is one reason A. It did not allow national religions. B. it encouraged warfare among feudal lords. C. It made laws and set up courts to uphold them. D. It encouraged serfs to leave the manor. My

    asked by dddd47905
  174. MATH

    How do i find the center of a circle using 3 points. Also need to find the radius and the equation of the circle.... My 3 points are (2,8) (-4,6) (1,-1) I found the Equation of the perpendicular bisector of the line between the first and second point which

    asked by B
  175. math

    75ft^2= ___m^2

    asked by Aye
  176. Math-please check

    Determine if a true bioconditional can be written from each conditional statement. If not, gove a counterexample. 1. If a = b then |a| = |b| Is this true? 2. If y^2= 64 then 3y=24 Is this false? Because if you do -8 both of them aren't equal

    asked by Anonymous

    By using the Henderson Hasselbalch equation,Calculate the Pka of lactic acid when the concentration of lactic acid is 0.01 molar. the PH is 4.80 and concentration of lactate is 0.87 molar

    asked by MAHA
  178. ssc

    one diagonal of a parallelogram is 16.5. it makes angles of 36 degrees 10 minutes and 14 degrees and 30 minutes respectively with the sides. find the sides

    asked by cris sept
  179. english

    How to explain the PEE structure?

    asked by kina
  180. BSurvey of Contemporary Economic Issues

    Professional sports players are generally paid much more than farmers, factory workers, engineers, and teachers. The markets for the professional sports players, farmers, factory workers, engineers and teachers are generally competitive. Even among

    asked by Tee
  181. Math

    Mrs. Warren is making a snack for her class. The recipe calls for chocolate chips and peanuts in a ratio of 4:2. If Mrs. Warren needs 15 cups of the snack, how many cups of the chocolate chips does she need?

    asked by Leo
  182. social studies

    What sensory imagery can you use to describe the Taino perspective on the encounter with the Europeans?

    asked by Jasmin
  183. World History (Please, Check My Answer!)

    How did American and British views of legislature differ? A: British views of legislature differed from American views as each of the 13 legislature functioned like a miniature Parliament and made its ownlaws. White male citizens who owned land elected the

    asked by Victoria
  184. P5 Science Energy

    Part of the leaf that turned brown.

    asked by J.Sarah
  185. P5 Science Energy

    Please help me.... State the energy conversions in the maglev wind power station. ____energy(wind)-->_____energy(turbines)-->_____energy(generators)

    asked by J.Sarah
  186. Calculus

    I am so lost, I have no idea what to do next. Find the equation of the tangent line to the graph at the indicated point f(x) =x^2 +x ; a=-1 I started out using f(-1)= (-1+h)-(-1)/h but i am so lost on what to do next. I have tried to look at examples in

    asked by Erin
  187. 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. I did. 5÷1.5=3.33 T=time T

    asked by Anonymous
  188. P5 Science

    My full question. A leaf was plucked from the garden. The procedure for testing for starch in the leaf was carried out. Part of the leaf turned blue-black and part of the leaf just turned brown. Question : Why do you think the other part of the leaf did

    asked by J.Sarah - Need help
  189. Algebra

    Jill asks each of her classmates to choose a number, then multiply the number by -3, add 2 to the product, multiply the result by -2, and then subtract 14. Finally, each student is asked to divide the result by 6 and record the answer. When Jill gets an

    asked by KG
  190. MATH

    1. WHICH SYMBOL WILL MAKE THE NUMBER SENTENCE -|16| ? 16 TRUE? A. = **** B. < C. > 2.WHICH SET OF NUMBER IS FROM LEAST TO GREATEST A. 7,|-4|,-7,0,-|3|,3 B. -|3|,-7,0,3,7,|-4| C. -7,-|3|,0,3,|-4|,7 D. 7,|-4|,3,0,-|3|,-7 3. WHICH SYMBOL WILL MAKE |-6| ? -6

    asked by HELP ME 911
  191. Physics

    Consider two spherical stones with same density (mass per unit volume). The larger stone has radius R = 8.58 cm and the smaller stone has radius r = 3.37 cm. Find the ratio of the terminal speed in air of the larger stone to that of the smaller stone.

    asked by Steven
  192. statistics

    Slf-Esteem Scoresdepression Scores Mean 3.43 15.78 StrdDev 0.75 10.34 13. The above chart contains the means and standard deviations for self-esteem scores and depression scores. Using this information and the most likely correlation coefficient obtained

    asked by matt