Questions Asked on
December 23, 2009

  1. physics

    A 65 kg diver jumps off of a 10.0 m tower. a. Find the diver's velocity when he hits the water. b. The diver comes to a stop 2.0 m below the surface. Find the net force exerted by the water. Ok, im a little confused about this problem. We knoe the mass of

  2. Chemistry

    An ideal gas differs from a real gas in that the molecules of an ideal gas: have no kinetic energy have a molecular weight of zero have no attraction for one another have appreciable molecular volumes have an average molecular mass I believe the answer is

  3. Business

    Mr Jones intends to retire in 20 years at the age of 65. As yet he has not provided for retirement income, and he wants to set up a periodic savings plan to do this. If he makes equal annual payments into savings account that pays 4% interest per year, how

  4. math

    howmany ways can 8 people line up for play tickets? Thank you

  5. physics =)

    A race car has a mass of 710 kg. It starts from rest and travels 40.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?

  6. Literature

    This is from yesterday's post--- climate-n relatives-n birthplace-n voices-n forget-v choke-v spurn-v use weapons-v dead-a dangerous-a embarrasing fervor-a cold, bare rooms-a loneliness-a The nouns shape the mood of the poem because they describe all the

  7. Math - Geometry

    If more than one plane contains three points A,B, and C, what must be true? A)AB is perpendicular to BC B)A,B, and C are noncollinear C)A,B, and C are collinear D)AB=BC

  8. Pre-Cal

    solve cos 5 thetha cos 15 -sin5theta sin 15 =squareroot of 3/2 Thank you

  9. physics

    i posted this earlier but am now stuck on getting through the algebra 1. The problem statement, all variables and given/known data 13) (II) At what distance from the Earth will a spacecraft on the way to the Moon experiance zero net force due to these two

  10. Physics

    Light from the Sun reaches Earth in 8.3 min. The speed of light is 3.00 x 10^8 m/s. How far is Earth from the Sun? GIVEN: t = 8.3 min V = 3.00 x 10^8 m/s --> Would acceleration be 9.81 m/s^2? Is it this equation d = Vit + 1/2 a t^2

  11. Chemistry

    Calculate the partial pressures and total pressure (in atm) exerted by 0.838 mol of methane, 0.184 mol of ethane and 0.755 mol of neon contained in a 4.00 L container at 27 C. PV=nRT for methane (4.00L) X = (0.838 mol)(0.08206 L-atm/mol-K)(300.15 K) X =

  12. Math - Geometry

    Five times the measure of an angle is 48 more than the measure of its supplement. The measure of the angle is... A)142 B)38 C)180 D)48

  13. computers

    how can you have or get a new or reiveive a email adress

  14. Physics

    I'm not sure how to go about solving this problem the algebra gets very messy... At what distance formt he EArth will a spacecraft on the way to the Moon experiance zero net force due to there two bodies because the Earth and Moon pull with equal and

  15. spanish

    una familia grande tiene muchas

  16. math grade 10 math

    A map shows a main gas pipeline running straight from A(45,60) to B(65,40) a) Is the point C(63,54) on the branch pipeline? Explain your reasoning b) What is the shortest route for connecting point C to the main pipeline.Explain **OMGGGG PLZZZ HELPPP,

  17. grade 10 math- slope/midpoint/length formulas

    A map shows a main gas pipeline running straight from A(45,60) to B(65,40) a) Is the point C(63,54) on the branch pipeline? Explain your reasoning b) What is the shortest route for connecting point C to the main pipeline.Explain **OMGGGG PLZZZ HELPPP,

  18. Math

    The first four digits of a 6-digit number are 9, 7, 5, 3, in this order. What are its last two digits if the number is divisible by 7 and 13?

  19. Chemistry

    True or False. All gases are colorless and odorless at room temperature. false Correct?

  20. Chemistry

    True or False. All gases are colorless and odorless at room temperature. false Correct?

  21. MATH

    There are 10 similar coins, but 2 of them are fake. The fake ones are lighter than the real ones, but both have the same weight. You are give a balance scale, and you should determine which coins are fake. At least how many weighings do you need to find

  22. Algebra

    ok I believe this is now correct 0 = (m_M r^2)/m_E - r^2 + 2(3.84403 E 8 m)r - (3.84403 E8 m)^2 how do I solve this algebraically where r^2 is the only unkown the physics problem h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2

  23. Chemistry

    Given a sample of gas (2.49 g) with a volume of 752 mL at 335K and 1.98 atm, what is the gas, SO2 or NO2? PV=nRT (1.98atm)(0.752L)= X (0.08206L-atm/mol-K)(335K) X = 0.0541634989 mol= g/gfm 2.49/X= 0.0541634989 X = 45.97 NO2 has 46g, whereas SO2 is 64.1g.

  24. geometry

    Find the area of a square inscribed in a circle of radius 10cm

  25. Algebra

    why is this a ture statement (A B^2)/C - B^2 =B^2 (A/C-1) by the way that is (A/C)-1

  26. grammar

    is it angry with her or angry at her

  27. Chemistry

    0.000014 mol of argon gas is placed in a 600 mL light bulb. What's the pressure of the gas in the bulb at 23C? PV=nRT (0.6L) X = (0.000014 mol) (0.08206 L-atm/mol-K)(296.15 K) X= 5.7 *10^-4 atm ?

  28. Managerial Economics

    A CA resort offers year-round activities and the resort's operating costs are essentially the same in winter and summer. Mgmt charges higher nightly rates in the winter, when its average occupancy rate is 75%, than in the summer, when its occupancy rate is

  29. Pre Cal

    Find the exact value of the cosine and the cosecant of thetha, if thetha terminates in quadrant II and sin theta = 4/5

  30. Pre-Cal

    Find the exact value of sec 60°tan135°-cot60°sin60°

  31. Pre Cal

    What is the value of: sin^-1 0.6349, sec^-1 0.5496, tan^-1 0.3457

  32. ELLS

    Do you know anything about English Language Learners?

  33. math

    A farmer has 1000ft of fence and wishes to enclose the largest possible area that has four individual square pens bordered by a rectangular pen of a different width on each end. what are the overall dimensions of the fence area with maximum square footage?

  34. 9th grade

    4y-9=15

  35. World History

    What was the title given to the way that powerdriven machines replaced hand tools in manufacturing?

  36. World History

    Who is the man whose locomotive won an important contest in 1829?

  37. Math grade 10

    a)determine whether the point A(-2, -6) lies on the circle defined by x^2 + y^2 = 40 b) find an equation for the radius from the origin O to point A c) Find an equation for the line that passes through A and is perpendicular to OA

  38. Intro to Chemistry

    How many milliliters of 5.50 M H2SO4 must you use to prepare 500.ml of 0.2 M sulfuric acid solution? I know I need to use the formula M1V1 = M2V2 but I'm not sure how to calculate the problem?

  39. Math - Geometry

    Suppose point P and lines l and m all lie on the same plane. If the distance from P to l and from P to m is 3, which of the following could be true? A)l is parallel to m B)l is perpendicular to m C)l=m D)any of these

  40. Literature

    Please correct me if I'm wrong. Thank you. Ambiguous identities in "The Metamorphosis" would be Gregor being a human and a giant insect or having the body of an insect but the mind of a human? And in "A Very Old Man with Enormous Wings" would it be the old

  41. math

    DQ sells 6 times as many orders of french fries as sonic everyday. If both sold 60 more orders DQ would only sell 3 times as many fries. How many do each sell before and after the incease?

  42. math

    If payless projected income this year will be 69000.00. That amount represents 40% of the annual sales. What is payless projected sales?

  43. math

    Graph the following equation and find the Y-intercept Y=x+8

  44. READING

    WAT DOES THE WORD DEVIOUS MEAN