Questions Asked on
January 17, 2013

  1. physics

    A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 246 km and a direction 30.0o north of east. The displacement vector B for the second segment has a magnitude of 178 km and a direction

    asked by shantel
  2. physics

    A pilot flies her route in two straight-line segments. The displacement vector A for the first segment has a magnitude of 246 km and a direction 30.0o north of east. The displacement vector B for the second segment has a magnitude of 178 km and a direction

    asked by shantel
  3. Chemistry

    On June 17, heavy rain fell on Seattle for 26 min. at a rate of 3.9 mm/hr. if the area of Seattle is 144km^2, how many gallons of water fell on the city that day?

    asked by Angelina
  4. Math 6

    Is the product of 8 x 5 1/2 40 1/2 ?

    asked by Moby
  5. Math 6

    Is the product of 8 x 5 1/2 40 1/2 ?

    asked by Moby
  6. 6th grade math

    Ok it is 3b-6 over (like a fraction) 2b+3 = 9 over (like a fraction) 4 help!

    asked by Alleesha
  7. math

    solve: 4x + 6y = 1/8 and 3x + 7y = 1/10

    asked by dakshayini
  8. Chemistry

    On June 17, heavy rain fell on Seattle for 26 min. at a rate of 3.9 mm/hr. if the area of Seattle is 144km^2, how many gallons of water fell on the city that day?

    asked by Angelina
  9. physics

    Consider the motion of an object along a straight path as shown in the figure. 1 0 1 2 3 4 5 6 7 8 9 b b b b b b b b time (s) velocity (m/s) Find the average acceleration during the time interval 0 s to 3 s. Answer in units of m/s 2 005 (part 2 of 6) 10.0

    asked by Anonymous
  10. Physics

    A student is standing on a railway station. A train is coming towards him. The first two carriages is passed her in 2seconds and next two is passed in 2.4 seconds. The train is uniformly decelerating. When the train stops the student is standing in front

    asked by Bipu
  11. physics

    011 (part 1 of 5) 10.0 points Two objects are connected by a string of negligible mass. The 12 kg block is placed on a smooth table top 2.4 m above the floor, and the 9 kg block hangs over the edge of the table. The 9 kg block is then released from rest

    asked by Anonymous
  12. english

    at papa's home

    asked by Anonymous
  13. physics

    A 126 kg block is released at a 6.8 m height as shown. The track is frictionless. The block travels down the track, hits a spring of force constant k = 1999 N/m. The acceleration of gravity is 9.8 m/s 2 .moreno (lm35839) – Homework 16A – smith –

    asked by Anonymous
  14. physics

    1 0 1 2 3 4 5 6 7 8 9 b b b b b b b b time (s) velocity (m/s) Find the average acceleration during the time interval 0 s to 3 s. Answer in units of m/s 2

    asked by Anonymous
  15. physics

    A car enters the freeway with a speed of 6.9 m/s and accelerates uniformly for 3.3 km in 2.8 min. How fast is the car moving after this time? Answer in units of m/s

    asked by Anonymous
  16. Math

    help please anyone? i'm having a hard time solvig these problems LOGIC CONDITIONAL PROOF. HOMEWORK HELP PLEASE!? A. 1. A -> (B -> C) 2. (C ^ D) -> E 3. -F ->(D ^ -E) / :. A -> (B -> F) B. 1. (A v B) -> -(C ^ D) 2. (-C v -D) -> (E F) 3. (E F) -> (G ^ H) /

    asked by Moses
  17. physics

    A robot probe drops a camera off the rim of a 291 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s 2 . Find the velocity with which it hits the ground. Answer in units of m/s Find the time required for the camera to reach the ground.

    asked by Anonymous
  18. physics

    A rocket moves upward, starting from rest with an acceleration of 28.5 m/s 2 for 3.09 s. It runs out of fuel at the end of the 3.09 s, but does not stop. How high does it rise above the ground? Answer in units of m

    asked by Anonymous
  19. science

    are u there ms sue?

    asked by Chex16
  20. Mechanics_physics

    An argon atom has a mass of 6.64 x 10kg has 5.5 x 108J of kinetic energy. At what velocity is it moving.?

    asked by Precious
  21. MATH

    The unit's digit for the number 7^76 is____ ?

    asked by Jeff
  22. Math

    * How many different odd 3-digit numbers can be formed using the digits 1,2,3,4,5 if none the numbes have repeating digits? * A bus having a seating capacity of 45 people is 80% occupied. When the bus stops one -third of the people get off and 3 people get

    asked by Marie
  23. Trigonometry

    Find all values of x such that sinx+sin2x=0 and 0

    asked by Amy
  24. Math

    If sinx=1/3 where pi/2

    asked by Amy
  25. Physics

    A lead bullet travelling at 350km/s strikes a target and is brought to rest.What will be the rise in the temperature of the bullet if there is no heat loss to the surrounding (SHC of Pb is 0.13J/k/kg and melting point of pb=600.5k)

    asked by Blessing
  26. math 1

    how many integral powers of 2 are there between 2 and 2000?

    asked by HELP HELP HELP MNHS
  27. Mechanics

    What is Viscosity

    asked by Precious
  28. Mechanics

    What is Viscosity

    asked by Precious
  29. political science

    is politics an art or a science? give proper reasons for chosen side.(its an essay)

    asked by jean
  30. Mechanics

    What is Viscosity

    asked by Precious
  31. math 2

    mera painted equal sections of her bedroom wall to make a pattern. she painted 2/7 of the wall white and1/2 of the wall lavender.write an.equivalent fraction.for each using a common denominator. please help answer. thx

    asked by stephie 23
  32. math 2

    mera painted equal sections of her bedroom wall to make a pattern. she painted 2/7 of the wall white and1/2 of the wall lavender.write an.equivalent fraction.for each using a common denominator. please help answer. thx

    asked by stephie 23
  33. math 3

    adam.has a collection of movie posters. 1/3 of the posters are for comedies and 1/4 of the posters are for dramas. what is the least number of movie posters Adam could have?

    asked by stephie 22
  34. math 3

    adam.has a collection of movie posters. 1/3 of the posters are for comedies and 1/4 of the posters are for dramas. what is the least number of movie posters Adam could have?

    asked by stephie 22
  35. Math

    Find the difference of the largest and smallast numbers formed by using all the digits 0,5,6,7,8 with no digit used twice.

    asked by Ishfaq
  36. figure

    is the sun a plane figure? explain.

    asked by RjhejheddJ
  37. quadratic equation

    if one root of 3x^2-5x+c=0 is 2, what is the other? (with solution pls... tnx...)

    asked by HELP HELP HELP MNHS
  38. math

    the quotient of n and 5 is 4 times n find equation

    asked by barb
  39. Math

    Find x,y,z (solution set) 2x+y+32=13 x+3y-z=4 23x-2y+4z=11

    asked by Aa
  40. Chemistry

    What are the physical propertise of Air

    asked by Emmy
  41. Literature

    I just can't seem to figure this out. In the poem "On this wondrous sea" by Emily Dickinson, which live indicates that the speaker has encountered challenges in her life? A. On this wondrous sea B. Sailing silently c. Their anchors fast d. Where the storm

    asked by Dylan
  42. Math

    7x-3y+4z=18 13x+6y+8z=30 11x-9y-12z=16 Find x,y,z

    asked by Aa
  43. Plane Trigonometry

    A segment of height 3 meters from the center of chord to center of arc has an arc of 1/3 radians. Find the area of the segment.

    asked by Sunshine
  44. urgence question for physic grade 9th

    A truck gradually start off from rest with a uniform. accelleration of 2m/s2 .it reaches as velocity of 16m/s. Using this equation v2 +2as .what is distance it travell while its accellerating?

    asked by meer badok obany
  45. math

    #1:Which ratios form a proportion? Use equivalent ratios to test each pair. A: 4/9, 2/3 B: 6/15, 9/12 C: 12/16, 15/20 D:18/20, 24/30 explain how o do it plsss

    asked by tesj
  46. math

    What would 350 dollars at 5 % compounded semi annually for 40 years amount to?

    asked by Barbara
  47. Proportions

    What is the solution to the proportion 3y-8/12=y/5? can someone help me do this?

    asked by Corie
  48. algebra

    an investor invested a total of 1,100 in two mutual funds. One fund earned a 5% profit while the other earned a 2% profit. If the investor's total profit was 49.00 how much invested in each fund?

    asked by Sandy
  49. consumer math

    John Tucker is interested in purchasing stock. He wants to determine the costs.

    asked by Darrin
  50. pharmaceutical chemistry

    what are the conditions when cathartics are properly used?PLEASE HELP ME.

    asked by ynah
  51. Science Help fast

    A cheetah can go from a state of resting to running at 20 m/s in just 2 seconds. What is the cheetah’s average acceleration? A. 0.1 m/s2 B. 10 m/s2 C. 0.1 m/s D. 10 m/s

    asked by Becka
  52. Science Help fast

    A cheetah can go from a state of resting to running at 20 m/s in just 2 seconds. What is the cheetah’s average acceleration? A. 0.1 m/s2 B. 10 m/s2 C. 0.1 m/s D. 10 m/s

    asked by Becka
  53. math

    How much money would need to be deposited into an account earning 5.75% interest compounded annually in order for the accumulated value at the end of 25 years to be $85,000?

    asked by Keysha Williams
  54. physics

    Which is the vector quantity that describes the shortest path between two points?

    asked by Anonymous
  55. fin/370

    What information is needed in order to prepare a cash budget

    asked by Anonymous
  56. engineering

    Your friend, a 75 kg mountain climber is suspended from a cliff by a rope. Calculate the tension in the rope, in Newtons, when you lift your friend to safety. If the rope can withstand 1.25 kN of stress per square centimeter of cross-sectional area, what

    asked by amanda
  57. science

    an iron box immersed in water,kerosene and coconut oil separately.does same force of buoyant force on iron box in all liquids?

    asked by rose
  58. engineering

    the pringles manufacturing company tells you that they are switching to a potato supply that has a higher moisture content than those used previously. The new supply, after being mashed an cooked, prior to drying for pringles production, now contains 70%

    asked by amanda
  59. science

    what is the natural and human-made cause of climate change visible in the computer simulation?

    asked by A
  60. math

    Two planes left at the same time from two airports which are 4,500 miles apart and flew toward each other. In 5 hours, they passed each other. The rate of the fast plane was twice the rate of the slow plane. Find the rate of each plane.

    asked by MP
  61. math

    In Ethan’s piggybank there are nickels, dimes and quarters. There are 3 times as many quarters as nickels, and 5 more dimes than nickels. How many of each kind of coins are there? Ethan has saved a total of $3.20.

    asked by MP
  62. music

    are the instruments in the string family old?

    asked by Anonymous
  63. social studies

    Lloyd is sitting in the waiting area of a swank restaurant anticipating a dinner meeting with a new client whom he has never met. All he knows is that the new client is named Chris. When he first meets Chris, which one of the following pairs of

    asked by phia
  64. geomtry

    Which is the sum of the interior angles of an octagon?

    asked by Anonymous
  65. Physical sciences

    What is the solvent of a cup of tea in homogeneous

    asked by Ngobeni risuna
  66. math

    –2(m – 30) = –6m

    asked by ft.tom
  67. PHYSICAL SCIENCE

    TWO FORCES OF 5N AND 7N RESPECTIVELY ACT ON AN OBJECT.WHEN WILL THE RESULTANT OF THE TWO VECTORS BE AT A MAXIMUM?

    asked by GOMOLEMO
  68. science

    what is stored energy?

    asked by Anhwar
  69. Math

    Shelley wove three rugs with Seminole designs. She wrote this expression to show the total length of all three rugs she wove. (8 7/16 + 11 9/10 ) + 15 1/10 Which shows another way to write the expression , using the Associative Property of Addition?

    asked by Anonymous
  70. American History

    What, in your estimation, were the key principles of the Progressive Movement?

    asked by angela
  71. math

    having trouble deciding between mean and median for which one would best represent the data and why. The numbers are: 22, 25, 34, 35, 41, 41, 46, 46, 46, 47, 49, 54, 54, 59, 60. Thanks....

    asked by Brandi
  72. Math

    Martin came in first place in the 10 meter dash with a time of 14 7/10 seconds. Samuel came in second place with a time of 15 23/100 seconds. By how many hundredths of a second did Martin beat Samuel?

    asked by Anonymous
  73. Expand binomial Pascal's triangle

    (p+q)^9

    asked by Bri
  74. algebra

    the ratio of two integers is 9:7 their sum is 1024 fint the two integers?

    asked by jessica
  75. tenchnology

    According to the textbook, there is an infinte amoount of time that our civilization can exist based on the following? A. our civilization is based on non-renewable resources B. Our production of nuclear weapons will lead to mass distruction C. At the

    asked by debbie
  76. Urgent Science!!!

    1. Which of the following is NOT a fossil? (1 point) outline of a fern found in a rock petrified wood in the desert baby mammoth found in a glacier old stone tools found in a cave 2. _____ is based on the idea that younger rock layers are deposited on top

    asked by plz help
  77. Math

    If your Indiana trip is 375 km, how many cm is this?

    asked by Kaelyn
  78. Math 6

    Jebb is the tallest player on the basketball team. He is 1 1/2 times as tall as the shortest girl in the sixth grade, who is 4 1/4 feet tall. How tall is Jeb? 3/2 x 17/4 = ?? IS this how I solve it? Help?

    asked by Moby
  79. calucus

    Draw the graph of y=-2f(x+1)-3

    asked by jackie
  80. lang arts

    1. What can you predict about the poem by previewing the title, subtitle, and first line of the poem “In Response to Executive Order 9066”? It will be a letter to the Japanese-American citizens in which they are told they must leave their homes. It

    asked by Anonymous
  81. World history; Check:P

    Human Origins Assignment What were the major achievements in human history during the Old Stone Age? The major achievements during the stone age was the invention of tools. They used tools to hunt for food. They learned how to make fire. 2.How did

    asked by Victoria
  82. physical sciences (motion in two dimensions)

    John stand at the top of a 30m building. He throws a stone upwards with a speed of 5m/s. Calculate. (1)how long the stone is in the air. (2)the maxi mum height the stone reaches the ground?

    asked by Lee
  83. Maths nd science

    A ball is thrown vertically upwards.It takes 4 s for the ball to return to the thrower's hand now what is thb maximum height reached by the ball.

    asked by Felicia
  84. nursing

    500 grams of sugar occupies a volume of 0.315 L. what is the density of the sugar in g/mL?

    asked by jasmin
  85. English

    Add one suitable adverb to each of these sentences 1.sbusiso walked across the field 2.the grey horse approached the gate 3.dotor tshabalala donated a prize 4.the trainer apologised for arriving late

    asked by Ntokozo
  86. pre-algebra

    evaluate V if V=5and w=4

    asked by Amaya
  87. science

    why do you thik modern cars use int

    asked by Taylorion engineernal combustather than external r
  88. English

    Things that have the same sound as January

    asked by Sequoia
  89. Math

    Lee & Lynn started out on a trip at 8:00am and arrived at 4:00 pm. The next day they started back home at 11:00am using the same exact route. If their driving speed was constant for the entire trip, at what time would they have been at the same place at

    asked by Reid
  90. Math

    Does the table represent a exponential function? x 1 2 3 4 y-1 -8 -27 -64 A.) Yes B.) No I think it's yes but not sure. Thank you.

    asked by Deborah
  91. Math

    Suppose a population of 160 crickets doubles in size every month. The function F(X)= 160 * 2^X gives the population after x months. How many crickets will there be after 2 years? A.)2,684,354,560 crickets B.)640 crickets C.)7,680 crickets D.)655,360

    asked by Deborah
  92. social studies

    what was a negative impact of "bonanza" farms

    asked by esai
  93. Math

    Suppose an investment of $2,300 doubles in value every decade. The function F(X)= 2300 * 2^X gives the value of the investment after x decades. How much is the investment worth after 2 decades? A.)$2,355,200 B.)$92,000 C.)$46,000 D.)$9,200 I think the

    asked by Deborah
  94. Math

    What is the graph of the function? y = 2 · 2x How would I graph this. I don't understand it. Thank You.

    asked by Deborah
  95. Chemistry

    Write the half-reactions for F3+ + I- ---> F2+ + I2 and balance it.

    asked by Alex
  96. Algebra

    -x+5y=13 x-y=15 Solve by using process of elimination.

    asked by Caitlyn
  97. physical science(chemistry)

    Why can chemical methods not be used to determine the reaction rate at different stages of the reaction?

    asked by tsakani
  98. Chemistry

    An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 2.77 , and the density of the crystal is 8.65 . Find the atomic weight of the element.

    asked by John
  99. science

    What are the orgin names for these abbreviation? in latin Au-gold ag-sliver sn-tin hg-mercury pb-lead k-potassium w-tungsten fe-tron

    asked by tom
  100. math

    what is the answer to 6x+4=34

    asked by sam
  101. Physics

    Two equally charged insulating balls each weigh 0.42 g and hang from a common point by identical threads 35 cm long. The balls repel each other so that the separation between their centers is 6.4 cm. What is the magnitude of the charge on each ball? I have

    asked by Nicole
  102. Algebra

    Is the series 72, 48, 32,... an arithmetic or geometric series. WHat is common difference or ratio

    asked by Andrew
  103. Pre-Algebra

    To make a batch of cookies you need 3.25 cups of sugar, if you start off with 16.5 cups of sugar, how many batches of cookies can you make?

    asked by Gianna
  104. Grammar

    The surgery was performed by Dr. Jones and me / myself. A) me B) myself I answered B

    asked by Marie
  105. college chemistry

    A 0.300 g sample of an aspirin tablet is used to prepare 100.0 mL of a stock solution by dissolving the tablet in 1 M NaOH then diluting with distilled water to the 100 mL mark of a volumetric flask. A 0.30 mL sample of the stock solution is then

    asked by abbie
  106. Grammar

    1.She is a nurse with who / whom I enjoy working. A) who B) whom 2.Then 50 cc of Marcaine was / were injected. A) was B) were 3.Then 50 cc of Marcaine was / were injected. A) was B) were My answers: 1.b 2.a 3.b

    asked by Marie
  107. chemistry

    CaCO3(s)+2HCl(aq)-->CaCl2(aq)+H2O(l)+CO2 (g) How many grams of calcium chloride will be produced when 31g of calcium carbonate are combined with 11 g of HCl? I have 0.3097 moles of CaCO3 and 0.30169 moles of HCl...I get stuck at that point

    asked by Jana
  108. Algebra

    What is the answer to 7x+2y=16 and -21x-6y=24 using the substituion method?

    asked by Yolanda
  109. science

    Gene therapy research uses _______ to alter defective hereditary material. (1 point) bacteria cells interferons viruses 2. _____ transports materials within a cell and between cells and makes up ______ percent of most organisms. (1 point) Fat; 60 Protein;

    asked by Girl
  110. biochemistry

    Calculate the pH of the resultant solution of mixing together two solutions of 2 L of 1.0 M acetic acid, 0.5 L of 1.0 M sodium acetate and then adding 8 g of solid NaOH (MW = 40.0 g/mole).

    asked by Dre
  111. math

    a truck driver traveled for 3 hours at an average speed of 65 miles per hours. how far did he travel in 8 hours?

    asked by darrius
  112. science

    The enthalpy of solution of KBr in water is about +198 kJ/mol. Nevertheless, the solubility of KBr in water is relatively high. Why does the solution process occur even though it is endothermic

    asked by Samantha
  113. science-repost! please help

    Determine if the following substances are soluble (at room temperature, 1 atm) in water or in hexane (: grease and CS2 how do you know this

    asked by Samantha
  114. Math

    Translate this situation into a system of equations of the first degree in two variables and make sure you identify the variables clearly: Today, the difference in age between a father and his son is 23 years. Two years from now, the father's age will be

    asked by Danielle
  115. basic chem

    If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the

    asked by Caitlin
  116. Advanced Functions

    How do I verify this identity? (I've tried a lot but it's just not working) (sin2x + sin2y) = 2sin(x+y)cos(x-y)

    asked by Zack
  117. Physics

    A balloon with a mass of 90 kg is filled with helium (density = 0.179 kg/m3). The balloon is spherical and has a diameter of 11.0 m. What is the maximum mass that can be attached to the bottom of this this helium balloon, for it to be able to fly? The

    asked by Alphonse
  118. physics

    You are pushing a box up an inclined ramp. The force you exert on the box is 19·N up the ramp. The weight of the box is 100·N straight downward. The force friction exerts on the box is 8·N down the ramp. The normal force exerted on the box by the ramp

    asked by wally
  119. physics

    A 800·kg elevator is attached to a cable whose tension is 7800·N. Which of the following statements could describe the motion of the elevator? Choose all that apply. slowing down as it moves upward moving upward at constant speed speeding up as it moves

    asked by wally
  120. Physics

    Two spheres of charge q1 and q2 that are equal in magnitude (i.e. |q1| = |q2|) are attached by a spring with a constant k = 1440kg/s2 and a rest length of x0 = 83.0cm. We take negative values of Äx for compression and positive Äx values for expansion.

    asked by Phil
  121. Algebra

    x+y+z=2 4x+5y+2=12 2x=4 solve using substitution

    asked by Summer
  122. Physics

    A block of mass m = 3.40kg and charge q = 1.50C is on an incline plane that makes an angle è = 33.0o with the horizon. An applied electric field is parallel with the incline as shown in the above diagram. What must the value of the applied electric field

    asked by Tim
  123. Physics

    A particle with mass m = 1.20g and charge q = 345ìC is traveling in the x-direction with an initial velocity of v0 = 68.0m/s. The particle passes through a constant electric field in the y-direction with magnitude |E| = 263N/C over a distance of d =

    asked by Nick
  124. social studies

    Did Martin Luther King Jr have to make his i Have a Dream speech

    asked by aniyah
  125. Physics

    Three concentric rings and one point charge are in the same plane as shown in the above diagram. The linear charge densities of the rings are ë1 = 2.60nC/m, ë2 = -1.10nC/m, and ë3 = 2.20nC/m with corresponding radii of r1 = 86.0cm, r2 = 64.0cm, and r3 =

    asked by Nick
  126. math

    What is 3/4 divided by 1/9. Please show and explain

    asked by Anonymous
  127. can u help me

    Which of the following statements is always true of similar polygons? (1 point) Corresponding angles of similar figures have the same measure. The lengths of corresponding sides form equivalent ratios. The lengths of corresponding sides have the same

    asked by tesj
  128. physics

    a truck travels at 90km/hr W for 10 min. then at 110 km/ hr for 38 km what was the trucks average velocity

    asked by Anonymous
  129. Chm

    What is the molarity of a saturated solution of potassium sulfate if the solubility is 13 g per 100 g H2O at 25°C? The density of the solution is 1.1 g/mL

    asked by Chris
  130. Chemistry

    If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the

    asked by Caitlin
  131. PLEASE HELP!

    Jordan has 4/5 as many DVDs as Joseph. If Jordan has 56 DVDs, then how many does Joseph have? Explain.

    asked by Bell
  132. math

    Members of the band are required to practice twenty-five minutes every night. About how many hours does a band member practice weekly?

    asked by Anonymous
  133. PLEASE HELP!

    Elizabeth has 17/10 as many plants as Rosalie has in her garden. If Elizabeth has 51 plants, how many plants does Rosalie have in her garden? Explain.

    asked by Bell
  134. the facility study unit

    aesthe tics is concemed with matters such

    asked by jo
  135. fractions in simplest form

    13/14

    asked by Enzo Barquinero
  136. Health

    The ________the concentration of HIV in semen or genital fluids, the more likely it is that HIV will be transmitted to a sex partner?

    asked by Riley
  137. physics

    A lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm. (a) How tall is the lamp's image if the lamp is a distance of 26.5 cm from the mirror (include sign if negative)? (b) How tall is the lamp's image if the lamp

    asked by m
  138. physics

    a farmhand attaches a 25 kg bale of hay to one end of a rope passing over a frictionless pulley connected to a beam in a hay barn. another farmhand then pulls down on the opposite end of the rope with a force of 227 N. ignoring the mass of thr rope what

    asked by Anonymous
  139. statistics

    There are two independent groups of students one group took online courses the second group took conventional course face-face. Using the sample data determine if there is a significant difference between the 2 groups scores.Ho(mu1-mu2)=0 (no difference),

    asked by Cherelle
  140. economics

    Select a product and for that the government places a mandated price ABOVE the equilibrium price, based on your research how would this affect the market equilibrium, explain your view.

    asked by judy
  141. Help me! Physics

    A block of aluminum with a mass of 2.6 kg is at 13C and comes in contact with a hot block of copper with a mass of 10.2 kg at 93C. What is the equilibrium temperature in Celsius degrees? caluminum = 0.22 kcal/kgC ccopper = 0.093 kcal/kgC

    asked by Sierra
  142. Math

    One type of lightning bug glows every 1 1/2 seconds. How many times can it glow in 1 minute?

    asked by Gabby
  143. posibility

    a jar contains 4 pink, 11 green, 19 blue, and 6 violet what is the posibility it will not be green

    asked by Anonymous
  144. Biology

    why does water and hydrogen peroxide have different chemical and physical properties

    asked by Bella
  145. math

    the mean life of a tire is 30,000 km. the standard deviation is 2000 km. 68% of all tires will have a life between _km and _ km

    asked by Antonee
  146. Math

    Alexa is choosing a number for her new combination lock. She can use three differents digits from 0 to 9. How many arrangements are there?

    asked by Luke
  147. Chemistry

    At pressures greater than 60,000 kPa, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions? A.)It is much greater. B.)It is much less. C.)There is no difference. D.)It depends on the type of gas. I think it's

    asked by Deborah
  148. Physics

    Find the magnitude of the x and y components of the following vector: ----------------- \ 35 degrees \ 52 N \ \ I also have to find out which of the components is negative in direction.

    asked by Andrew
  149. Science

    What are 6th grade examples of negative feedback mechanism?

    asked by jonah
  150. Physics

    This is for physics class. Sally applies 32 N of force at an angle of 22 degrees above the horizontal to a 12 kg crate. Ignoring friction, calculate the horizontal acceleration of the crate? Conceptual: will the acceleration of the crate increase or

    asked by Andrew
  151. MATH HURRY PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!

    xy = –12. What is the constant of variation for this relationship? A. -1/4 B. –1.2 C. –0.12 D. –12

    asked by Becka
  152. accounting

    What is the purpose of closing all temp accounts.

    asked by Nana
  153. Math

    Part 1: How are exponential growth and decay present in the real world? Give at least 2 examples for exponential growth and 2 examples of exponential decay. Part 2: View and comment on the work of at least 2 other students. Try to choose students whose

    asked by Deborah
  154. Biology

    why does water and hydrogen peroxide have different chemical and physical properties

    asked by Bella
  155. Math 8 - HELP!!!

    A 5 7/8 ft section of wood was cut from 9 1/2 ft board. How much of the original board remained.

    asked by Lauren
  156. Percents Using Proportions

    I do not understand the wording and/or got stuck while I was working on the following two problems: The attendance at a family reunion was 160 people. This was 125% of last year's attendance. How many people attended the reunion last year? There are 1,295

    asked by Samantha
  157. Please help -biology

    why does water and hydrogen peroxide have different chemical and physical properties

    asked by Bella
  158. Math

    Perimeter of pentagon is 9x-1. Find length of missing side. Sides are 3x-4; 2x+3; x+1; x-5

    asked by Perry
  159. Probability

    1) A group of students were asked about their itunes collection. The probability that a student had downloaded the album by group X was 33%. The probability that a student downloaded the album by group Y was 41%. However, if you only asked the students

    asked by robson
  160. Math

    Ms. Nikkel wants to divide her class of 23 into 4 equal teams is this reasonable? Why or why not?

    asked by Camila
  161. chem please help!

    If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the

    asked by Caitlin
  162. Reading

    1. Scan the article “The Games Kids Play” to find the name of the Iowa State University professor who believes violent games make people more aggressive. Bryce Conley Craig Anderson Eric Harris Howard Winkler

    asked by Jman
  163. per-algebra

    whats the sequence,common difference or common ratio and the next three terms of the sequence of 10,18,26,34

    asked by bob
  164. astronomy/conversion

    There are 365.25 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Convert years into seconds. Show your work and keep 5 significant figures. Ok, so finding it is easy (multiply 24, 60, 60 and 365.25) but how does the

    asked by carl
  165. Math

    Chris cuts a 3 1/2 feet long board of wood. He cuts out 4 pieces that are each 2/3 foot long. Find the combined length of the 4 pieces? Find the length of the remIng board after chris gets his 4 pieces

    asked by Zach
  166. Spanish

    Un amigo te pregunta quienes estan haciendo varios trabajos. Responde sus preguntas con frases completas. Modelo: Quien ensana una clase? La profesora esta ensenando una clase. 1. Quien te ayuda a planear un viaje? 2. Quien habla en el programa de radio?

    asked by Anonymous
  167. Science

    WHat fraction of the earth is covered in water? Forgot my science book HELp

    asked by JOshua
  168. Science

    Compare how much kinetic energy and potential energy the ball has at each point and describe why the ball has that energy

    asked by Brandon
  169. fundamentals of math

    if 3 is added to a number and this sum is doubled, the result is two more than the number. Find the number.

    asked by laura
  170. multiplying and significant figs

    Multipy and keep only the correct number of significant figures. 101.6 * 3

    asked by carl
  171. Pre-cal

    A bicycle with 26 inch diameter wheels is traveling at 10mph, to the nearest whole number how may revolutions does each wheel make per minute?

    asked by Anonymous
  172. Reading

    3. What are the three main parts of a research report? title, body, conclusion introduction, body, sources introduction, body, conclusion introduction, evidence, conclusion

    asked by Jman
  173. Don't get scared when you hear the word Physics!

    A 1500 kg car traveling at 16.0 m/s to the south collides with a 5100 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the final velocity of the two-vehicle mass? Answer in

    asked by Just help please. Homework due in 4 hours
  174. Spanish

    Un amigo te pregunta quienes estan haciendo varios trabajos. Responde sus preguntas con frases completas. Modelo: Quien ensana una clase? La profesora esta ensenando una clase. 1. Quien te ayuda a planear un viaje? 2. Quien habla en el programa de radio?

    asked by Anonymous
  175. Math 8 - HELP!!!

    Give an example of a rational number between 1.5 and 1.75 Ok.. I SERIOUSLY need help with this problem.

    asked by Lauren
  176. Chemistry

    I have to write the equation for the following and I am not figuring it out.I was out with flu and so lost...please help. How many moles of Hydrochloric acid are needed to dissolve 39.0 grams of aluminum Hydroxide? How many grams of precipitate will form a

    asked by Lost
  177. Grammar

    My parents and we. Is that correct?

    asked by Anonymous
  178. Grammar

    Is this correct? My parents and we are jumping.

    asked by Anonymous
  179. please help!!

    If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the

    asked by Caitlin
  180. math

    For a temperature of 100°C, A cricket will chirp how many times

    asked by Bryana
  181. science

    if the compressor in a refrigerator stopped working, how would its failure affect the heat transfer cycle?

    asked by Taylor
  182. math

    1/2 is multiplied by a fraction and the product is 3/8. What is the fraction

    asked by Anonymous
  183. trig/sig figs

    There are 60" in 1', 60' in 1°, and 2π radians in 360°. Convert arc-seconds into radians. KEep 6 significant figures. If someone could help and walk me through this process, it would be soooo appreciated!

    asked by carl
  184. sciene

    if the compressor in a refrigerator stopped working, how would its failure affect the heat transfer cycle?

    asked by Taylor
  185. Chemistry I NEED HELP! PLEASE

    How many moles of Hydrochloric acid are needed to dissolve 39.0 grams of aluminum Hydroxide? I just need to write out the equation but I was out and don't know how PLEASE HELP!

    asked by Lost
  186. science

    if the compressor in a refrigerator stopped working, how would its failure affect the heat transfer cycle?

    asked by Taylor
  187. science

    Will a plastic block that has sides that measure 9 cm and its mass is 19.2 grams float on water?

    asked by eric
  188. Math 6

    A bag of oranges weighs 5 1/4 pounds. How much does 1 1/2 bags weigh? Ok, so this is what I did : made each into improper fraction liket his. 23/4 x 3/2 = 69/8. Now, I divide 69/8 and I come up with 62 5/8 right ?

    asked by Moby
  189. Chemistry

    1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. Tell me the process..... What would you do....ex: I would pour this into that ....... 2. Would it be possible to easily

    asked by Anonymous
  190. Algebra

    Find the range of the relation [(1, -4), (2,5), (3,5)]. Then determine whether the relation is a function.

    asked by Megan
  191. Visual Basic intro to Programming

    What is the difference between the If Then ElseIF clause and a Nested If Block? Please provide examples of how you would use each.

    asked by Monika
  192. chem really need help!

    If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed? How many grams of the reactant in excess will remain after the

    asked by Caitlin
  193. math help me plss

    1. How do you write 0.24% as a decimal? (1 point) 0.24 0.024 0.0024 2. How do you write 135% as a decimal? (1 point) 1.35 13.5 0.135 3. How do you write % as a decimal? (1 point) 0.002 0.02 0.2

    asked by tesj
  194. science

    What can engineers do to help buildings survive in an earthquake?

    asked by Joshua
  195. math

    what is 0.0678/100

    asked by dan
  196. Physics

    Which of the following is a direct result of the equation of continuity? a. The pressure one meter below the surface of water is about 10% greater than atmospheric pressure. b. The pressure on the inlet side of a horizontal pipe through which water is

    asked by Johnny
  197. Differential Equations

    Model radioactive decay using the notation t = time (independent variable) r(t) = amount of particular radioactive isotope present at time t (dependent variable) -λ = decay rate (parameter) Note that the minus sign is used so that λ > 0 a) Using this

    asked by Quinn
  198. Math

    Use a calculator to simplify the expression. 8/2^3-2+4.1*2 When I used the calculator, I got 22.2 So then I used "PEMDAS" but got 7.53333... But the answer is 7.2 can someone help please?

    asked by Emma
  199. math

    what is the ratio of the radius to a diameter of 2.4

    asked by Tyson
  200. science

    where do we encounter concepts of aquatic ecosystems everyday?

    asked by Anonymous
  201. math

    1. Find 30% of 70. (1 point) do you have a link or can u explain how to do this plss...

    asked by sincery
  202. chemistry

    can i mix hypochlorite powder and baking soda to make a bleach solution?

    asked by jimdel
  203. Physics

    The human heart is a mechanical pump. The aorta is a large artery that carries oxygenated blood away from the heart to various organs in the body. For an individual at rest, the blood in the aorta (of radius 1.25 cm) flows at a rate of 5*103 cm3/min (5

    asked by Johnny
  204. Geometry

    Just really quick, my friend and I disagree on this problem. I got 1997 and he got 721.033 4. A surveryor is standing on horizontal ground level with the base of a skyscraper. The angle formed by the line segment from his position to the top of the

    asked by MathMat
  205. Computer (Hardware Support)

    What types of devices use USB ports?

    asked by Derek
  206. 7th Grade Math stuffs

    Compare probabilities of independent and probabilities of dependent events. Any examples???

    asked by lazyburrito
  207. physics

    At the moment car A is starting from rest and accelerating at 5.0 m/s2, car B passes it moving at a constant speed of 45m/s. How long will it take car A to catch up with car B?

    asked by Marissa
  208. chemistry

    Lab on Determining hard water Not sure if I answered this currently, not completely sure how to explain either. If a student has a non-zero blank correction, but forgets to include that correction in his/her calculations:? a. Would his/her calculated

    asked by Ahmad
  209. algebra

    Jill’s Company produces lawnmowers. It has fixed costs of $1000 per week and Variable costs of $70 per lawn mower. Express the total weekly costs C(x) as a function of the production level x.

    asked by Anonymous
  210. math

    -14s-1 true or false

    asked by barb
  211. Math

    John bought some stamps. He used 3/5 of then to mail letters. He had 12 stamps left. How many stamps did he use?

    asked by Samantha
  212. Physics

    A horizontal pipe, 10 cm in diameter, has a smooth reduction to a pipe 5 cm in diameter. If the pressure of the water in the larger pipe is 8.00 104 Pa and the pressure in the smaller pipe is 6.00 104 Pa, what is the flow speed of the water (in m/s) in the

    asked by David P.
  213. math

    A survey by Men’s Health magazine stated that 40% of men said they used alcohol to reduce stress. At   0.10, test the claim that a random sample of 100 men was selected and 30 said that they used alcohol to reduce stress. Use the P-value method.

    asked by v
  214. Trig

    A 12-foot ladder reaches 9 ft 6 in up a wall. How far up would a 20-foot ladder reach when placed at the same angle? Write the answer in feet with inches.

    asked by Kelly
  215. algebra

    C(x) = $70(x) - $1000 If Jill can sell her lawnmowers for $150 each, b) Find the revenue function R(x) c) Find the manufactures weekly profit function P(x) d) how many lawnmowers must the producer sell per week in order to show profit?

    asked by Anonymous
  216. English

    Patrol can be an action verb. Explain how a teacher would patrol.

    asked by Hayden
  217. its physics.. i just want the formula

    A boy on a 2.2 kg skateboard initially at rest tosses a(n) 7.7 kg jug of water in the forward direction. If the jug has a speed of 2.9 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boy’s mass.

    asked by Rah_rAh
  218. algebra

    The weekly cost of manufacturing x telephones per week is found by a manufacturer to be C(x)= 500+20x+xsq dollars. The telephones can be sold at a price p=$80 each. a)find the manufacturers's break-even production level(s) b)for what production levels will

    asked by Anonymous
  219. Englis

    Patrol can be an action verb. Explain how police officer can be used as patrol.

    asked by Hayden
  220. Thank you Jiskha and Reiny

    I just wanted to write a post to thank everyone who helps out. I haven't found people to be very grateful on this site so I thought i'd take a moment to tell you how awesome you guys are. Special thanks to Reiny for all the helpful math tips. You have

    asked by Anonymous
  221. english

    Is this antithesis? "...like rain, except its not raining..." "Like a radio or something, but its not a radio..." "...all very civilized, except this isn't civilization." examples taken from The Things They Carried by Tim O'Brien

    asked by Kristan
  222. sci

    why are aquatic ecosystems important to humans?

    asked by Anonymous
  223. Math

    A large factory knows that if it sells it's new gadgets for $10 each, it can sell 350 per month and if it sells the same gadgets for $8 it will sell 500 per month assuming the relationship between price and sales is linear predict the monthly sales of

    asked by Emma
  224. algebra

    Solve: C(x)=70x-1000

    asked by Anonymous