Questions Asked on
December 9, 2011

  1. physics

    if a car generates 18 hp when traveling at a steady 88 km/h, what must be the average force exerted on the car due to friction and air resistance

    asked by eli
  2. physics

    A merry-go-round in a playground has a mass of 200 kg and radius of 1.50 m. You apply a force F = 23 N tangentially to the edge of the merry-go-round for a time of 6.5 s. The moment of inertia of the merry-go-round is 1/2(mR2). What is the angular

    asked by jen
  3. trig

    If θ is an angle in standard position and its terminal side passes through the point (20,-21), find the exact value of sec(θ).

    asked by Anonymous
  4. Chemistry

    Suppose you have two solutions to titrate with NaOH: (a) 10 ml of.1M HCL (b) 10 ml of .1M CH3COOH would you expect either of the solutions to require different volumes of NaOH in order to reach an end point? Explain

    asked by Christine
  5. chemistry

    A 0.12-mole sample of nitrogen gas occupies a volume of 2.55 L. What is the volume of 0.32 mol of nitrogen gas under the same conditions?

    asked by BB
  6. Math

    Determine the maximum and minimum number of turning points for the function h(x) = -2x^4 - 8x^3 + 5x -6. Maximum:3 Minimum:1 Is this a valid reason: A quartic polynomial function has a 3 Turning points. The turning point is always 1 less than the degree.

    asked by Melinda
  7. Physics

    Candona strikes a 0.055-kg golf ball with a force of 260 N. If the ball moves with a velocity of 65 m/s, calculate the time the ball is in contact with the club.

    asked by HELP
  8. CHEMISTRY

    What is the intermolecular force that exists between a magnesium ion and a hydrogen sulfide? A dipole dipole b london dispersion c ionic bond d ion dipole e ion ion

    asked by THOMAS
  9. 1 Credit for HS

    How to earn one credit for high school? Last year when the whole 6th grade visit our middle school (we have 2 middle schools in our district, my friends and other people are going to that middle school but since I'm not going to that middle school the

    asked by Laruen
  10. english/11th grade

    I'm supposed to choose how the italicized noun clause is used. Not so sure about the different types of noun clauses.. can someone help me? & also kinda explain the difference? 1. The chairman heard [what was said about the program.] S OP PN DO 2. A good

    asked by Amy
  11. Accounting

    The following information is necessary to compute the net assets (stockholders' equity) and book value per share of common stock for Rothchild Corporation: 8% cumulative preferred stock, $100 par $ 200,000 Common stock, $5 par, authorized 100,000 shares,

    asked by kate
  12. CHEMISTRY

    I know this question is already on here but the answer wasn't helpful to me. Liquid Sodium can be used as a heat transfer fluid. Its vapor pressure is 40.0 torr at 633 C and 400.0 torr at 823 C. Calculate its heat of vaporization.

    asked by THOMAS
  13. Chemistry

    How much heat energy, in kilojoules, is required to convert 53.0 g of ice at -18.C to water at 25.0 C ?

    asked by Morgan
  14. Statistics

    A study shows that 10% of americans are left-handed. Find the probability that at most one student is left handed in a class of 20 students.

    asked by Brittany
  15. Physics

    A 0.140-kg baseball is pitched horizontally at 36.7 m/s. When a player hits the ball, it moves at the same speed, but in the opposite direction. If the bat and the ball are in contact for 0.450 ms, calculate the average force the bat exerts on the ball.

    asked by HELP
  16. Physics

    A rocket expels gases at a rate of 1.30 x 10^3 kg/s with a speed of 3.00 x 10^4 m/s. What is the force exerted on the rocket?

    asked by HELP
  17. Physics

    The moment of inertia of an asteroid rotating about its own axis is 5.00 ! 10 4 kg"m2. Its angular velocity is 40.0 rad/s. If a force acts on the asteroid for 0.100 s, increasing the angular velocity to 48.0 rad/s, find its magnitude

    asked by HELP
  18. Power Tools

    Hello, I'm not sure if my answers are correct. Can someone review my work to make sure its right. My answers are marked with an *. 1. What is the typical no-load speed of a high-speed drill? A. 1,000 rpm *B. 2,500 rpm C. 3,000 rpm D. 3,500 rpm 2. Why

    asked by Joe
  19. world history

    What helped unite Charlemagne's empire? answer A strong efficient government helped unite Charlemangne's empire

    asked by mike
  20. science

    2mL of a 10M solution of Compound A is taken and 48mL added. 1mL of this solution is then taken and dried to dryness before being re-dissolved in 0.1mL. What is the concentration of the 0.1mL solution?

    asked by jake
  21. Physics

    Analyze the collision of a baseball with a bat. During which portion of the collision does the baseball’s velocity reach zero? a. before the collision b. during the collision c. one second after the collision d. one-hundredth of a second after the

    asked by HELP
  22. science

    Compound A has a MW of 283. 0.423g of Compound A is dissolved in 13.5mL of water and 1mL of the solution added to 5mL of water to produce “solution A”. What is the concentration of Compound A in “solution A”?

    asked by jake
  23. Maths

    Eight coins are tossed at a time,256 times Number of heads observed at each throw is recorded and the results are given below. Find the expected frequencies What are the theoretical values of main and standard deviation? Calculate also the mean the S.D. of

    asked by Naveen
  24. world history

    what helped unite charlemagne's empire? Viking attacks

    asked by mike
  25. Physics

    A rocket leaves a launch pad at liftoff with a great deal of upward momentum. What was initially given downward momentum? a. the launch pad b. the astronauts aboard the rocket c. the expelled fuel d. the entire Earth

    asked by HELP
  26. calculus

    Find the maximum volume of right circular cylinder that can be inscribed in a cone of altitude 12 cm and base radius 4 cm, if the axes of the cylinder and con coincide.

    asked by Anh
  27. physics

    a ball has a mass of 0.5kg dropped from a cliff top, the ball srtikes the sea below at a velocity of 10m/s. (a)what is the kinetic energy of the ball as it strikes the sea? (b) what was its potential energy before it was dropped? (c)from what height was it

    asked by sim
  28. Physics

    Which conditions will result in the smallest change in momentum? a. a large force over a long time period b. a large force over a short time period c. a small force over a long time period d. a small force over a short time period

    asked by HELP
  29. Physics

    A 6110-kg bus traveling at 20.0 m/s can be stopped in 24.0 s by gently applying the brakes. If the driver slams on the brakes, the bus stops in 3.90 s. What is the average force exerted on the bus in both these stops?

    asked by HELP
  30. 11th grade english

    I'm supposed to choose how the italicized noun clause is used. Not so sure about the different types of noun clauses.. can someone help me? & also kinda explain the difference? 1.The first thing to consider was [how to find a paying job.] S OP PN DO 2.I am

    asked by Emily
  31. Chemistry (Equilibrium)

    Given the reaction below 2NOBr(g) 2NO(g) + Br2(g) and the value of Kc = 1.98, at a temperature of 480 K what is the value of Kp ? (Hint: Use the value of R in the appropriate units.) I used the equation Kp=Kc(RT)^Delta N Then plugged in to get

    asked by Summer
  32. math

    Draw a venn diagram to illustrate the following. In a shop 50 cars were inspected and it found that 23 needed new brakes and 34 needed new tires. 3 needed no services at all how many needed new brakes and new tires? How many only needed brakes? Please help

    asked by kia
  33. algebra

    Find the mean for each set of data. Round to the nearest tenth if necessary 12, 20, 8, 15, 16, 14, 7, 5, 11, 8, 14 i realy need help on this i keep on getting 12 as the median but the answer choices don't have 12, could u guys help me please

    asked by jenna
  34. English - Infinitive phrases

    Consider the two sentences: His mother wanted him to study more. She made him study more. In the first, we have an infinitive phrase acting as a direct object, with "him" as the subject of the infinitive. How about the second sentence? Is that also an

    asked by Anonymous
  35. business law

    ethics- (a). Harveston asserted that Narnia’s service was invalid in part because “the return of service states that process was delivered to “JoAnn Kocerek” and did not show that she “had the authority to accept process on behalf of Harvestons

    asked by jon
  36. economics

    The following are hypothetical exchange rates: 2 euros = 1 pound; $1 = 2 pounds. We can conclude that

    asked by Michael
  37. math

    A certain kind of bacteria doubles in quantity every hour. At midnight two nights ago. only two of these bacteria were in a jar. At midnight last night, the jar was full. At what time was the jar half full?

    asked by peter
  38. Chemistry

    Apply the gas laws to determine how many grams of sodium azide (NaN3) are needed to fill the air bag of your vehicle to a volume of 79.0 L at 35.0 degrees celsius and 1.00 atm. The reaction occurring in the air bag can be repesented by the equation, 2NaN3

    asked by Dani
  39. science

    Compound A is provided as a 500mM solution. If 12.5 mL is taken and added to 12.5mL of water, how many moles (or millimoles / micromoles) are there per 0.1mL of the diluted solution?

    asked by jake
  40. Physics

    A reversible heat engine operates between thermal reservoirs at 1000 K and 290 K. If 8610 J is extracted from the hot reservoir, how much work is done by the heat engine?

    asked by Jon
  41. Accounting

    When Resisto Systems, Inc., was formed, the company was authorized to issue 5,000 shares of $100 par value, 8 percent cumulative preferred stock, and 100,000 shares of $2 stated value common stock. Half of the preferred stock was issued at a price of $103

    asked by kate
  42. physics

    A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released.

    asked by me
  43. maths

    A coffee manufacture wants a new blend of coffee that sell for $3.90 per pound by mixing two coffees that sell for $2.75 and #5.oo per pound respectively. What amount of each coffee should be blended to obtain the desired mixture? Assume that the total

    asked by deniece
  44. project management

    A project exists outside of the standard line organization. its false what is wrong with it sorry i don't have a book,its expensive,we are poor and i cant find any on the net thankyou

    asked by hello
  45. Maths

    What is the area of the minor segment cut off a circle of radius 10 cm by a chord of length 12 cm? Could you please show me the working out for this question? The answer in the textbook is 16 sq cm. Thanks!!!

    asked by Candice
  46. calc 1

    Evaluate the indefinite integral. e^(8x)sin(e^(8x))

    asked by adam
  47. calculus

    The velocity function is v(t) = - t^2 + 4 t - 3 for a particle moving along a line. Find the displacement and the distance traveled by the particle during the time interval [-2,6].

    asked by Anonymous
  48. math

    solve each triangle using either the Law of Sines or the Law of Cosines. If no triangle exists, write “no solution.” Round your answers to the nearest tenth. A = 23°, B = 55°, b = 9 A = 18°, a = 25, b = 18

    asked by Rick
  49. Physics

    A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released.

    asked by me
  50. maths

    If a kayak moves at a rate of 12 mph in still water If the river's current flow is 3 mph how long will it take to travel 29 miles?

    asked by Anonymous
  51. Alg2

    An anthropologist finds there is so little remaining Carbon-14 in a prehistoric bone that instruments cannot measure it. This means that there is less than 0.5% of the amount of Carbon-14 the bones would have contained when the person was alive. How long

    asked by Rock
  52. Math

    Three different numbers are chosen at random from the set {1,2,3,4,5}. The numbers are arranged in increasing order. What is the probability that the resulting sequence is an arithmetic sequence?

    asked by Esmeralda
  53. physics

    An ice skater glides around a rink at a constant speed of 2 m/s. Is the skater accelerating?

    asked by alexis
  54. Chemistry

    A hot-air balloon has a volume of 4.000 x 10^5 L at 30 degrees celsius and a pressure of 748 mmHg. If the average molar mass of air is 29.0 g/mol, what is the mass of air in the balloon?

    asked by Dani
  55. chemical kinetics

    at 100C the gaseous reaction A==2B+C is observed to be first order.on starting with pure A it is found that at the end of 10min,the total pressure of the system is 176mmHg,and after a long time the total pressure of the system is 270mmHg.a).determine the

    asked by Anonymous
  56. algebra

    find all complex zeros for the following polynomial function please show all your work f(x) = x^3 - 125 ????????

    asked by sue
  57. Chemistry

    N2 and O2 gases react to form dinitrogen pentoxide(N2O5).Calculate deltaH and deltaU for this process per mol of N2 gase knowing that when 101.7g of N2 react with 102.97g of O2 at 25DegC and a constant pressure of 1 atm, 533.5kJ of energy is released as

    asked by ndate
  58. statistics

    The probability any one widget is free of defects is 0.93. For quality control purposes the company is concerned about bad batches of widgets. If the widgets are shipped in batches of 20, find the probability of at most 2 defective widgets in one batch.

    asked by Jennifer
  59. Alg2

    the annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country during a year. During the period 1985-1999, the Gross Domestic Product of the United States grew about 3.2% per year, measured in

    asked by Rock
  60. math

    suppose you deposited $3000 of earned income into an IRA, you canearn an annual interest rate of 8%and you are in a 40% tax bracket (Note:interest rates and tax brackets are subject to change over time, but some assumptions must be made to evaluate the

    asked by Anonymous
  61. physics

    A motor cyclist travelling at 12m/s decelerates at 3m/s^2. (a)How long does he take to come to rest? (b)How far does he travel in coming to rest?

    asked by sim
  62. algebra

    amys bowling score in her 3rd game was 10 less that her score in her first game and 5 more than her second game. The total points of all 3 games were 275. What is the highest number of points she could have scored in her first game?

    asked by Anonymous
  63. algebra

    The amount spent worldwide in advertising on mobile devices can be estimated by f(x) = 0.4x2 + 0.01x + 0.9, where x is the number of years after 2005 and f(x) is in billions of dollars. b)When will worldwide mobile ad spending reach $41 billion?

    asked by pat solon
  64. 11th grade english

    I am supposed to state how the italicized noun clause is used, but I'm not sure how to tell the difference.. can anyone help? 1. [What I wanted to do] was to finish my work. S

    asked by Amy
  65. math

    The track coach plans to make 8 lanes each 1-meter wide on the running track. The track measures y meters along the inside curb. The track has straight parallel sides and semicircular ends. If the runners in a race lined up at the same spot and stayed in

    asked by Raheem
  66. social studies

    i need help in choosing a topic for my social studies fair, i am in the 6th grade i love sports, football especially.

    asked by Deshun
  67. Physics2

    2 blocks are in contact on a horizontal table. A force is applied on the first block at a 30* angle. The blocks move to the right side. If m1 = 2kg and m2 = 1kg and F = 6 N kinetic friction at the middle of the 2 blocks and the table = 0.250 Find the

    asked by Jim
  68. trig

    If (cosa-sina)/sina = 2 , then what is tga = ?

    asked by Evelina
  69. pre calc

    My teacher asked for the EXACT VALUES of sin(pi/6) cos(pi/4) csc(pi/3) I have to figure it out without a calculator? Also, if I was to do with it with a calculator, would csc be typed as 1/sin?

    asked by Jill
  70. geometry

    THE DIGONAL OF A CUBE MEASURES 33cm.Find the surface area and the volume of the cube

    asked by Anonymous
  71. Math

    Three different numbers are chosen at random from the set {1,2,3,4,5}. The numbers are arranged in increasing order. What is the probability that the resulting sequence is an arithmetic sequence?

    asked by Esmeralda
  72. calculus

    The width of a rectangle is measured as 12.3 cm, while the length is measured as 28.8 cm. The width measurement could be off by 1.2 cm, and the length could be off by .04 cm. Estimate the maximum possible error in calculating the area of the rectangle.

    asked by Jane
  73. vocbulary studies

    i have choosen korea is this a good introduction for my brief history of korean language. what is a korean language? korean is one of the worlds oldest living languages.there are about 78 million korean speakers worldwide.korean is spoken by the korean

    asked by Ciara's Sister
  74. Chemistry

    What is the volume of a scuba tank if it takes 2000 L of air collected at 1.00 atm to fill the tank to a pressure of 150 atm? T is constant.

    asked by Dani
  75. precalculus

    Determine the maximum and minimum number of turning points for the function h(x) = -2x^4 - 8x^3 + 5x -6. Maximum:3 Minimum:1 Is this a valid reason: A quartic polynomial function has a 3 Turning points. The turning point is always 1 less than the degree.

    asked by Melinda
  76. algebra

    List all possible or potential rational zeros for the polynomial below find all real zeros of the polynomial below and factor completely over the real numbers. f(x) x^4 + 10x^3 + 12x^2 - 58x + 35 Someone anyone?????

    asked by sue
  77. physics

    The wheel of a car has a radius of 0.390 m. The engine of the car applies a torque of 466 N·m to this wheel, which does not slip against the road surface. Since the wheel does not slip, the road must be applying a force of static friction to the wheel

    asked by nagham
  78. algebra

    the ordered pairs (2,3), (2,6) and (6,6) are coordinates of three of the vertices of a rectangle. What are the coordinates of the ordered pair that represents the fouth vertex? (3,6), (6,3), (3,2) or (3,3)

    asked by linda
  79. physics

    Suppose 0.0210 kg of steam (at 100.00°C) is added to 0.210 kg of water (initially at 19.5°C.). The water is inside a copper cup of mass 48.9 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

    asked by maria
  80. physics

    A 1.41-kg aluminum pot contains 2.25 L of water. Both pot and water are initially at 17.5°C. How much heat must flow into the pot and the water to bring their temperature up to 92.7°C? Assume that the effect of water evaporation during the heating

    asked by maria
  81. Math

    A circular piece of wire has a radius of 12 cm. This is cut then bent to form an arc of a circle whose radius is 60 cm. Find the angle subtended at the centre by this arc. Give your answer to the nearest degree. Please show working out Thank you so much!

    asked by Candice
  82. 6th grade Science

    Please help me with the questions? 1) How do you respond to some stimuli in your environment? The examples I wrote are: If I am hungry, I will eat food. If I am cold, then I will put on a jacket? 2) What does the fur of a bear have to do with homeostatis?

    asked by Tim
  83. Confuses how my teacher got this?

    The question says "Given that cos(theta)=(-7/25) and sin(theta)>0, calculate the exact values of tan(theta) and csc(theta). We start out by drawing a triangle. 25 is on the side of the hypotenuse and -7 is on the adjacent side, because cos is adjacent over

    asked by Jill
  84. physics

    Suppose 0.0210 kg of steam (at 100.00°C) is added to 0.210 kg of water (initially at 19.5°C.). The water is inside a copper cup of mass 48.9 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

    asked by maria
  85. US History

    Flow chart. One Box then two boxes then 6 boxes. The words are: Freedom of Religion Freedom of Speech Involvement in Government Obey The Law Respect the Rights of Others responsibilities right to vote rights. Don't know how to put the flow chart together.

    asked by Miranda
  86. Physics

    I am second guessing myself A 4 kg block and a 45 kg block are placed side-by-side at the top of a frictionless ramp. Each is given a very light tap to begin their race to the bottom of the hill. In the absence of air resistance a. the 4 kg block wins the

    asked by Anonymous
  87. Science/Physics

    Your car has been setting out in the hot summer sun all day. The metal hood, the glass windshield, and the fabric upholstry are all at 180 degrees farenheit. If you touch the hood with your hand it could be burned, if you touch the windshield it will be

    asked by Clay
  88. Chemistry

    The combustion of methane can be described by the equation: CH4 (g) + 2 O2 (g) -> CO2 (g) +2H20 (g) If 22.0 mL of CO2 (g) were collected, what volume of H20 (g) also could be collected under the same conditions?

    asked by Dani
  89. science

    NaOH has a MW of 40. A 0.12M solution is made by adding how much NaOH to 100mL of water?

    asked by jake
  90. writing

    My son is 3yrs and 6months old he is facing problem in writting small alphabets would u plz help me ,how i teach him :)

    asked by sana
  91. precalulus

    use the intermediate value theorem to show that f(x) has a zero in the given interval. f(x) = -x^5 -2x^4 + 5x^3 + 4; [-0.9, -0.8] Stuck!

    asked by james
  92. math

    The cost price of 400 lemons is equal to the selling price of 320 lemons. Then the profit percent is

    asked by niroj
  93. English

    Could you please check if the following sentences are possible? Thank you. 1) Did you watch TV last night? Yes, I watched a new drama series and last night was the first episode. 2) Last night they broadcast the first episode (possible?) 3) What was it

    asked by Henry2
  94. Lab

    Neither carbon tetrachloride nor trans CHBr=CHBr have dipole moments. Both have cery different molecular geometries. What are their molecular geometries, and why are they different?

    asked by tienking
  95. physics

    The mass of the Mars is about 0.11 the mass of the earth, its radius is 0.53 that of the earth, and the acceleration due to gravity at the earth's surface is 9.80 {\rm m}/{\rm s}^{2}.

    asked by Anonymous
  96. Algebra 1

    what is the equations "The sum of two numbers is 75. The first is 9 more than 5 times the second. Find the first number?" What is the equations "Jack's bowling score is 20 less than 3 times Jill's score. Thw sum of their scores is 220. Find the score of

    asked by Bailey Davis
  97. math

    Rodney need 3/4 of a roll of wrapping paper to wrap 5 gifts. How much wrapping paper does it take to wrap two gifts?

    asked by Alicia
  98. physics

    the distance between the marks of 0 degree centigrade and 100 degree centigrade is 12cm and if the level of mercury thread is at 4.8 cm then what would be the temperature in celsius scale?

    asked by Hareem
  99. physics

    A former amusement park attraction consisted of a huge vertical cylinder rotating rapidly around its axis. The rotation speed should be sufficient for the people found inside to be stuck to the wall when the floor was removed. what should be the minimum

    asked by Greg
  100. Algebra

    What is the equation of the line having the specified slope and contained the indicated point. M=-3/5;(12,-6)

    asked by Ivette
  101. Physics (verification)

    I would love for someone to please verify my solution for this problem: A former amusement park attraction consisted of a huge vertical cylinder rotating rapidly around its axis. The rotation speed should be sufficient for the people found inside to be

    asked by Greg
  102. statistics

    Write the null and alternative hypotheses. Justify which is the claim. A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is less than 900 hours

    asked by Catherine
  103. English

    In "How to Build a Fire" what is the answer to this question? Aristotle described various plots. Combining them, we get a tradtional definition of an ideal tragedy. How does this story compare to this traditional ideal of a Greek tragedy? It fits the ideal

    asked by Anonymous
  104. physics

    if the force of friction on a sliding scaleis 25n the force to maintain the constant velocity is

    asked by cindy
  105. vocabulary studies

    im suppose to write an essay of a non indo european language of my choice is there any other besides japenese korean swahili it has to be a 2-3 page essay

    asked by Ciara's Sister
  106. math

    an average sized female spider and a large spider can lay a total of 2,100 eggs at one time.The large spider lay 20 times the number of eggs as the average sized spider.How many eggs does the average sized spider lay?

    asked by pinky
  107. algebra

    solve the following in the real number system x^3 + 8x^2 + 10x - 15 = 0 Please help me!

    asked by anon
  108. algebra

    Use the given information about a polynomial whose coefficients are real numbers to find the remaining zeros. degree: 6 Zeros: -8 + 11x(can't put this sign in looks like ii with slash over)i, -7 + 17i, 16 - isqrt 2

    asked by Alissa
  109. Pre-algebra

    State a definition of a polynomial in the x. Give an example of a monomial, a binomial and a trinomial. Thank you.

    asked by Sherrie
  110. Question

    In college application when they ask Rigor of secondary school record do they means what I did in middle school???

    asked by Laruen
  111. physics

    a rock with a mass of 6.0 kilograms is being whirled in a horizontal circle on the end of a rope 1.6 meters long. if the speed of the rock is 2.7 meters per second, what is the magnitude of the centripetal acceleration

    asked by Anonymous
  112. math

    The length of a rectangle is one more than seven times the width. The perimeter of the rectangle is 26 7/8 square inches. Find eight times the width.

    asked by kia
  113. PRE-CALC

    sin(arctan(-4/3) okay so i made arctan(-4/3) = x so im solving for sin(x) and x= arctan(-4/3) so then tanx = -4/3 and now im stuck i don't know what to do after that

    asked by Billy NEED HELP
  114. algebra

    how do I solve F = 5/9 (F-32) ?

    asked by Anne
  115. Algebra

    Algebraically at what temp is Celsius 1/4 that of Fahrenheit?? ie C = 1/4 F

    asked by Marnie
  116. physics

    A copper sheet of thickness 2.09 mm is bonded to a steel sheet of thickness 1.35 mm. The outside surface of the copper sheet is held at a temperature of 100.0°C and the steel sheet at 26.3°C a) Determine the temperature (in °C) of the copper-steel

    asked by maria
  117. Math

    State the exact values of the following. cos(360 degrees) sec(7pi/2) tan(-9pi/2) How do I do these? Thanks!

    asked by Jillian
  118. Calc

    Calculate the exact values of sin(theta) cos(theta) and tan (theta) when theta=240 degrees. How would I do this with and without a calculator?

    asked by Jillian
  119. science

    Why are proteins necessary in your body? What are polymers that build up to make proteins?

    asked by Erin
  120. wold history

    i need pennfoster text answer for text 007679

    asked by myrlene
  121. science

    Compound C (MW = 550) is provided at a concentration of 25g/100mL. 1mL is taken and compound D is to be added (MW = 1025, concentration = 75mM) to give a final ratio of compound C:D of 4:1. What volume of compound D is to be added?

    asked by jake
  122. precalculus

    Determine the x-intercepts of the polynomial function y=-6(x+7)^4 + 5. Round to two decimal places, if necessary. y=-6(x+7)^4 + 5 0=-6(x+7)^4 + 5 -5=6(x+7)^4 -5/6 =(x+7)^4 There are no x-intercepts??

    asked by Melinda
  123. Math

    How much meters are in 7 1/2centimeters

    asked by Pop
  124. pre cal

    g(x) = x^2 - x -12 / x + 1 I know the division brings it to x -2 + -10/x + 1 but these are the steps I have to follow 1. factor the numerator and denominator and find its domain. ( I know 0 is not in domain) 2. write in lowest ermas as p(x)/ q(x) and find

    asked by Amy
  125. English

    I left out a few sentences I urgently need you to check. Thank you. 1) The programme was first broadcast in 2004.(Can you also say: the fist time it was broadcast was...) 2) They lived building homes from the trees and eating the food which was on the

    asked by Henry2
  126. English

    Hello. I'll be very grateful for your help. 1) Is it possible to use "security maintenance" in the sentence: "The country has made progress in security maintenance" or is it better to say "in maintaining security"? 2) Is the sentence correct: "The

    asked by Ilma
  127. english

    In what ways is Hedda Gabler the hero of Hedda Gabler by Henrik Ibsen?

    asked by jon
  128. Computer help!!!

    Is 15.30 mbps good download speed? Also is 15 ms ping good and 0.40 mnps upload speed?

    asked by Zack
  129. Science/Physics

    Your car has been setting out in the hot summer sun all day. The metal hood, the glass windshield, and the fabric upholstry are all at 180 degrees farenheit. If you touch the hood with your hand it could be burned, if you touch the windshield it will be

    asked by Clay
  130. English

    Could you please check these definitions? Thank you very much in advance. 1) The programme was very good (is "nice" possible?) An episode is a part of a long TV series. 2) An episode is one of the several parts of a story. An advert is a short film which

    asked by Henry2
  131. Top Schools

    Is Clarkstown North or South HS is one of the top best high schools?????? My dad wants me to go to that school after middle school if we won the lottery and move.

    asked by Laruen
  132. science

    What is the net force on a box that is being pushed to the left with a force of 50 N while it is also being pushed to the right with a force of 60 N

    asked by Tonya
  133. Precalc

    Determine the x-intercepts of the polynomial function y=-6(x+7)^4 + 5. Round to two decimal places, if necessary. y=-6(x+7)^4 + 5 0=-6(x+7)^4 + 5 -5=6(x+7)^4 -5/6 =(x+7)^4 There are no x-intercepts?? No one has answered this question yet. Answer this

    asked by Anonymous
  134. Question

    I'm partcipating in the Doodle 4 Google Competition and like do I have to mail my project in with the entry form???

    asked by Laruen
  135. math

    What kind of triangle has the angle measurement of 49,53,78

    asked by Halimah
  136. physics

    A 4 kg block and a 45 kg block are placed side-by-side at the top of a frictionless ramp. Each is given a very light tap to begin their race to the bottom of the hill. In the absence of air resistance a. the 4 kg block wins the race. b. the 45 kg block

    asked by Anonymous
  137. math

    Find the 265th term of an arithmetic sequence whose second term is 5/8 and whose 9th term is 71/24 pls help asap

    asked by Alicia
  138. Math

    Convert to degrees: (5pi/8) How would I do this?

    asked by Jill
  139. calculus

    Find the critical number of g(t)=(t^2)/(5t+4)

    asked by diana
  140. physics

    A 1.67-kg block of aluminum at 21.7°C is to be melted and reshaped. How much heat must flow into the block in order to melt it? use the following values: For copper: c_copper=0.386 kJ/kg.K T_fusion=1359 K L_fusion=205 kg/K For aluminum: c_aluminum=0.900

    asked by maria
  141. Pre-calc PLEASE HELP!

    Calculate the exact values of the cot(theta) and sin(theta) for the acute angle theta if sec(theta)= the square root of 6. Thank you so much!

    asked by Jill
  142. physics

    What is a car average acceleration if it slows down from 22ms to 15.7 m/s in 2.15 s?

    asked by Dwayne
  143. Personal Finance

    What are 4 major consumer credit laws?

    asked by Anonymous
  144. science

    One kg weighs 9.8 N on Earth. Would it weigh more or less on the Moon?

    asked by Tonya
  145. South America

    1. Under America's second party system, the Whigs stood for A. policies that kept government hands off business and industry. B. policies that directly supported commercial enterprises. C. a "negative liberal state." D. a "liberally negligent" state.

    asked by kitty
  146. math

    is the mean or median a better estimate for the parameter of interest?

    asked by Anonymous
  147. chef school

    You are given a recipe that feeds 100 1 cup servings. Describe the steps you would take to convert the recipe to 1350.

    asked by maurice
  148. accounting

    What is the acid test ratio? Is it the same thing as the quick ratio?

    asked by Matt
  149. physics

    how do we calculate the height of a falling ball with a mass of 0.5kg and a velocity of 10m/s.

    asked by sim
  150. algebra

    9z^2+24z+16/6z^2+5z-4

    asked by chris
  151. integral calculus

    evaluate integral by substitution (e^x-e^(-x))/(e^x+e^(-x))dx

    asked by flo
  152. Family Law

    A __________ agreement can be used by same-sex couples in all states. (Points: 5) prenuptial postnuptial premarital cohabitation Is it "D"

    asked by Andy
  153. math

    simplify 144+(-317)+213 =?

    asked by Anonymous
  154. science

    Compound B is provided as a solution and has a specific gravity of 0.65 (Specific gravity is the weight in grams per mL of solution) and is known to be 90% pure (each gram of compound B solution only contains 90% Compound B and 10% of degradation

    asked by jake
  155. Math

    Marla has 3 secret code cards. The first shows a 37. The second card has the first box blanked out and the second box is a 2. The two code cards together equal the third card which is 59. Why is the missing number?

    asked by Rick
  156. History

    What famous mob boss aka Scarface was convicted of tax evasion in 1931?

    asked by Jaycee
  157. biology

    Relationship between free energy change and metabolism in biological system

    asked by BIOLOGY
  158. Question

    What is Yale looking for a student????

    asked by Laruen
  159. English

    Could you please help me check these few sentences? Thank you. 1) I'm happy our head science teacher is so enthusiastic to carry out a project with your and the French school. 2) I read you both agreed to hold the meeting on 27 January and that you are

    asked by Henry2
  160. Pre-algebra

    How would I explain to my friend why the quotient of x^8 and x^2 is x^6 and not x^4. She is questioning the rule. How do I explain?

    asked by Sherrie
  161. Maths

    The diameter of a ball bearing is to have an average of 2.0 Cm. A random sample of 10 bearings is selected every hour to check the diameters. The sample selected at 9 a.m. gave the following measurements: 2.02, 2.04, 2.00, 1.98, 1.98, 2.04, 2.04, 2.00,

    asked by Naveen
  162. us history

    what do you think were the 15 most important events in us history between the founding of jamestown(1600's) and the end of the great depression (1930's)???

    asked by hannah
  163. physics

    Samuel travels to the east at 15m/hr for 20 minutes. Then hevtravels 30 degrees north of east 2m/s for 15 minutes. What is his displacement?

    asked by amanda
  164. algebra

    what is the least prime number between 80 & 90?

    asked by linda
  165. SCIENCE

    WHAT ARE THREE PARTS OF STRANDS

    asked by Anonymous
  166. math

    is 3 times 6 18 am i correct?

    asked by mya
  167. Essay

    Is there any essay contests for 2012 (that are due in 2012)???????

    asked by Laruen
  168. Chemistry

    A sample gas is 3.7 L at 15.3 degrees C and the pressure is held at constant. What would be the volume if the temp was raised to 153 degrees C?

    asked by Hummer
  169. calculus

    verify the Intermediate Value Theorem if F(x)=squre root of x+1 and the interval is [3,24].

    asked by piyatida
  170. Chemistry

    A researcher is studying the decomposition of A as shown by the general reaction below: 2 A(g) 4 B(g) + 2 C(g) Initially, the scientist fills an evacuated 1.772 L flask with 3.710 x 10-1 moles of species A. Upon equilibrium, it is determined that the

    asked by Summer