Newest questions posted by Daniel
  1. Physics

    A green car with a mass of 900 kg is placed in the back of a yellow tow truck that has a pivot at one end. The car is held in place with a chain at the top end of the lift, as pictured below. The chain holding the car in place can withstand a maximum force
  2. physics

    A group of particles is traveling in a magnetic field of unknown magnitude and direction. You observe that a proton moving at 1.50 km/s in the +x-direction experiences a force of 2.25x10- 16 N in the +y-direction, and an electron moving at 4.75 km/s in the
  3. Physics

    In a calorimeter can whose behaves thermally is.if it were equivalent with 40g of water
  4. Math

    A recipe for fruit punch calls for cranberry juice and sparkling water. The ratio of cups of cranberry juice to cups of sparkling water is 6:24. According to the recipe, how many cups of cranberry juice are needed for every 1.5 cup of sparkling water?
  5. English

    I need help with this essay and check all the grammar and help me with counterclaim THE BATTLE OF GAME CONSOLE For the past years, the war of the game console giants has been a continued and heated debate. Many claims and supports various kinds of game
  6. Science

    What causes seasons
  7. Science

    What does H2O stand for in science
  8. Calculus Please Help

    How much work is required to lift a 700kg satellite to an altitude of 1x10^6m above the surface of the earth? The gravitation force is F=GMm/r^2, where M is the mass of the earth, m is the mass of the satellite, and r is the distance between them. The
  9. Math

    A fuel oil tank is an upright cylinder, buried so that its circular top 12 feet beneath ground level. The tank has a radius of 6 feet and is 18 feet high, although the current oil level is only 13 feet deep. Calculate the work required to pump all of the
  10. Math

    How much work is required to lift a 700kg satellite to an altitude of 1x10^6m above the surface of the earth? The gravitation force is F=GMm/r^2, where M is the mass of the earth, m is the mass of the satellite, and r is the distance between them. The
  11. Function Domain

    Giving your answer in interval notation, find the domain of the function sqrt(((x+4)(x−4))/((x−7)(x−5)))
  12. Sequences

    Like the Fibonacci sequence, a certain sequence satisfies the recurrence relation an=an−1+an−2. Unlike the Fibonacci sequence, however, the first two terms are a1=4 and a2=1. Find a32.
  13. Trigonometry

    If sin(a)=x and a∈(π/2,π), find a formula for the following in terms of x: a.) cos(a) b.) cos(3π/2+a) c.) tan(π+a)
  14. science

    an elephant of mass 50kg stands with all four feet on the ground. each foot has an area of 0.2m^2calculate the pressure exerted on the ground.[g=10m/s^2]
  15. Biology question pH

    pH levels are each a 10-fold change so a change by 2 is actually a change by 1000. pH determines certain characteristics in organisms that allow them to live in certain areas so an alteration in pH changes their adaption skills. why is a change by 2 =
  16. John

    solve the quadratic equation 2x^4-3x^3-7x^2 12x-4=0
  17. John

    solve the quadratic equation 4x^3-20x^3+13x+12=0
  18. NHD Project

    I was wondering if anyone would help me revise my history day thesis paragraph before I turn it in. The subject is on Pearl Harbor and relates to conflict and compromise. Japan, Germany, and Italy wanted to expand their empires vastly territorially. This
  19. American Government

    Representing the state in lawsuits and trials is the responsibility of which state official? A. attorney general B. treasurer C. governor D. secretary of state
  20. American Government

    The city council of Smallton has just chosen a new chief administrator. She will carry out the policies of the council and hire department heads. If the council is not pleased with her work, it has the ability to dismiss her at any time. Which form of city
  21. History

    Which accurately describes the involvement of the Catholic church in medieval European government? A. the rules and rituals of the church guided the administration of government in Europe. B. The Catholic Church forced European Kings to adopt the
  22. Trigonometry

    a boy standing 70m away from a flag–post observes that the angles of elevation of the top and bottom of the tower on top the flag–post are 70^ and 69^ respectively. Find the height of the tower
  23. Texas History

    Explain how the fall of the Alamo and the Goliad Massacre both helped and hurt the Texans` quest for independence in the Texas Revolution. PLZ HALP
  24. science biology quick question

    When applying the process of science, which is tested? A question B a result C an observation D a prediction E a hypothesis I know is D or E can you help me understand why D or E is the better choice?
  25. Algebra 2 A

    A candy store makes a 9-pound mixture of gummy candy, jelly beans, and hard candy. The cost of gummy candy is $2.00 per pound, jelly beans cost $3.00 per pound, and hard candy costs $3.00 per pound. The mixture calls for two times as many gummy candy
  26. Algebra 2 A

    What is the minimum value for z=3x-1/2y over the feasibility region defined by the constraints? a.-4 b.-5 c.-3 d.-6 constraints x greater than or equal to 0 y less than or equal to 8 y greater than or equal to x y greater than or equal to -1/2x+6
  27. Algebra 2 A

    A jet ski company charges a flat fee of $26.00 plus $3.25 per hour to rent a jet ski. Another company charges a fee of $24.00 plus $3.50 per hour to rent the same jet ski. Using a graphing calculator, find the number of hours for which the costs are the
  28. Chemistry

    If 0.525 g of Fe2O3 and xH2O are heated and 0.400 g of Fe2O3 are obtained, what is the value of x?
  29. math

    Wut is 40cm long
  30. Maths

    An 8 x 8 x 8 hollow cube is constructed from 1 x 1 x 1 cubes so that its six walls are 1 cube thick. The number of 1 x 1 x 1 cubes needed to make the hollow cube is A.169 B.296 C.298 D.384
  31. Math

    Plss help (3b-4a)(3b-4a)
  32. visual basic

    Write a visual basic program to calculate total pay of employee who get an additional pay of 10% to their basic salary if they worked for more than 10years for the company
  33. Math

    Solve for x under the assumption that x>0. Enter your answer in interval notion using grouping symbols. X-48/x
  34. Physics

    A roller coaster car is loaded with passengers and has a mass of 500 kg along with a speed of 18 meters/second at the dip. The radius of curvature of the track at the bottom point of the dip is 12 meters (gravity = 9.8 meters/second2). What force is
  35. English

    I wrote two thesis statements, which one is good. Which one should I use for my essay. 1) Over the recent years, the use of illicit drugs has increased to some extent with the rise of drug legalization campaigns, though, with reformation and implantation
  36. Economics

    The fixed cost of producing five units of a particular commodity is given as #900 while the total cost of producing the same five units of this commodity is #1000.the marginal cost of the 6th unit produced later is #200.calculate the average variable cost
  37. Algebra

    Can you guys help me solve this problem I dont know why I cant get it. Thanks. Solve for x. (26000-x)2813.95 + x(314.73)=26000(640.2)
  38. Math

    If a baseball and bat cost $110, and the bat costs $100 more than the ball, how much does the ball cost? I don't get it i say it's 10 but its not its 5 YYYYYYYYY
  39. Math

    Amanda increase the amount of protein she eats every day from 48 g to 54 g. By what percentage did amanda increase the amount of protein she eats?
  40. Algebra

    In 4 years time John will be half of the father's age his father will be 33 next year, how old will John be
  41. Algebra

    John will be half of the father's age his father will be 33 next year, how old will John be
  42. english

    _____ describes the life cycle of a star.
  43. Science

    If a bowling ball with a mass of 2.75kg. travels 27 meters in 7.6 seconds , how fast is it traveling?
  44. Geometry

    I scored 5616 on my Geometry scantron but that number is to large to make any sense. Is that a good or a bad score. I'm in 9th Grade.
  45. Inter Agric Science

    Explain the effect of carbonation, hydrotion,hydrlosis and oxidation
  46. Physics

    An empty bottle weighs 20 grams and 60 grams when filled completely with water.What would the bottle weigh when filled completely with mercury. [pw=1.0gcm^-3,pm=1.6gcm^-3]
  47. Math

    There will be 240 seats on the lawn for graduation. Show all the ways you can make equal rows of chairs if there are at least 5 rows.
  48. math

    the sides of a triangle are consecutive integers.If its perimeter is 126cm.find the lengths of the sides.

    At a temperature of 18.0°C of 23.0cm^3 of a certain gas occupies has pressure of 103 kPa. (a) What volume would the gas occupy at a temperature of 0.00°C and pressure of 101kPa? (b) 1.00 moles of a certain gas occupies a volume of 22.4 litres at 0.00°C
  50. Math

    If the diameter of a circle is 42cm;what is its radius. Show the formula and the calculation
  51. Computer Science (please help )

    Prove that if A is any language over the alphabet {0}, then A* is regular.
  52. Chemistry

    The equilibrium constant, K, for the following reaction is 1.54×10-2 at 506 K: PCl5(g) PCl3(g) + Cl2(g) An equilibrium mixture of the three gases in a 15.7 L container at 506 K contains 0.207 M PCl5, 5.64×10-2 M PCl3 and 5.64×10-2 M Cl2. What will be
  53. Economics(Help)

    Nancy is indifferent between a gamble that pays $625 with a probability of 20% and $100 with a probability of 80%, versus a sure payment of $269. She is also indifferent between another gamble that pays $269 with a probability of 50% and $10 with a

    Consider a solid ball of mass m = 50g and is placed on a long flat slope that makes an angle of 30° to the horizontal. The ball was initially at rest and was then released such that it rolled down the slope without slipping. With a detailed explanation of
  55. Mathss

    Calculate the area of the following triangles, giving your answers to 2 decimal places: (a) The right-angled triangle with sides a=16, b=63, and c=65. (b) The triangle with angle α = 40° and adjacent sides b=10 and c=20.
  56. Math.

    Each boksheld in the library holds 82. There are 24 full bookshelves in the library. How many books are in library.
  57. Microeconomics

    LTC=2q-2q^2+q^3 Demand p=100-q Determine the long run equilibrium Price Representative firm's output(q) Industry output q and number of firm's in the industry
  58. Physics

    Suppose that a cars x-acceleration during a certain time period is given by the function a(t) = -bt. If the cars x-velocity at t=0 is 32m/s, and b=1m/s^2, how long will it take the car to come to rest.
  59. math

    Daniel is now six times as old as Mabel in twelve years time Daniel will be two times as old as Mabel .how old are they
  60. physis

    (1) A solid weight 0.04 Newton in air and 0.024 newton when fully immersed in liquid of density 300 kilogram per metre cube.What is the volume of the solid? (2)The density of a body is 5*10^3 kilogram per metre cube and it weights 1 newton in air
  61. Physics

    a twin engine plane flies due south with an air speed of 335km/h. There is a wind blowing at 75km/h to the east relatve to the ground. what are the plane's speed and direction relative to the ground
  62. Math

    a family budgets 1/2 of its income for housing and 1/3 for food what fraction of their budget do these expenses cover
  63. Math

    the towns highway department marks a new road with reflective markers the road is 6 3/4 miles in length the markers are spaced every length 1/8 of a mile. What is an expression that can be used
  64. Marya

    Ali has a smooth convex utility function. He is optimizing. The price of x changes, and it has no effect on his consumption of y. Is this possible? Show in diagram why or why not.
  65. Economics

    If Joe is currently consuming 64 nuts and 10 berries, what is the largest number of berries he would be willing to give up in exchange for 17 additional nuts?
  66. Set Theory

    Let the Universal Set, S, have 136 elements. A and B are subsets of S. Set A contains 34 elements and Set B contains 98 elements. If Sets A and B have 22 elements in common, how many elements are in A but not in B?
  67. History

    Why was the act of toleration enacted? A To ensure African Americans could Maintain their own religious practices B To provide freedom of religion for the Jews C To retain a separation between the church and state D To safeguard freedom of worship to
  68. physics

    What is the resultant displacement when a ship sail 200km north and then 150km west
  69. math

    Which of the following is not one ways to express a ratio
  70. math

    Which of the following is not one of the three ways to expree a ratio 3-4 3:4 3 of 4 3to 4
  71. English

    Change into passive - I have been registering scores like that.
  72. math

    Solve 2 + 2 sin θ = 3 cos^2 θ. Give the general solution and then give solutions in [−π, π] How do i solve for theta?
  73. maths

    The temperature in a town was 24 degrees at midday. The temperature rose by 5 degrees to reach a maximum at 2pm and the dropped 17 degrees before midnight. what was the temperature at midnight?
  74. Math

    Solve the equation X + 24 = 36; x =
  75. physics

    A car on the bridge weighs 2oooN and is 6m away from one of the bridge piers and 4m from the other. How much force does each pier exert to support the car? Pivot point is the weight of the car on the bridge.
  76. Math

    A cylindrical water tank is 70cm in diameter to begin with it is full of water a leak starts in the bottom so that it looses 10 litres every 1 hour how long will it take for the water level to fall by 20cm.
  77. math

    a plumber charges $25 for service call plus $50 per hour what is the cost 8 hours? What is 10 hours?
  78. Algebra

    Solve (10x^3+30x-20)÷(-5x+5) 2x^2-2x+4 -2x^2-2x-4 -2x^2+2x+4 2x^2+2x-4
  79. Accounting

    Aunt Rhea Corporation Income Statement For the Year Ended December 31, 2015 Service Revenue $ 900,000 Operating Expenses 700,000 Net Income before Income Tax $ 200,000 Gain on Investment Sale 10,000 Net income Before Income Taxes $ 210,000 Income Tax
  80. Chemistry

    Complete and balance these half-equations. Express as net ionic eqn. 1.) Cr2O7(2−) → Cr(3+) (acidic solution) So far, I have: Cr2O7(2−) + 14H + 6e(-) →2Cr(3+) + 7H20 2.) C2O4(2−) → CO2 (acidic solution) Not sure how to do this one. Thank you.
  81. math

    Sam has 9yellow pencils in his desk three fourth of his pencils are yellow how many pencils does sam have in his desk
  82. ratio and proportion

    Three villages share water from a water tank.The tank holds 3,600 gals of water. The villages used the following ratio 2:3:4. how many gallons does village b use? how many gallons does a and c use together? wahat is the difference on the amount used by c
  83. division and remainder...error ws from my teacher not me

    1+2^2+3^3+4^4+.....+10^10 when is is divided by 5 what is the remainder!! show working,please have been trying that i could not,get it
  84. divison&remainder

    1^2+2^2+3^2+.......+10^10 when divide by 5 whats the remainder i made no typo that's the question i proff read
  85. remainder help!@steve and damon

    1^2+2^2+3^2+......+10^10 when it divided by 5 what the remainder???? even a hint can,t help me my head is fried have been do math alday just show me the working i beg!
  86. Science

    is there a chart available that show the vapor pressure of Isopropyl alcohol and water solutions at 68 degrees F ?
  87. calculus!!!! help

  88. calculus help!!!!! plz

  89. maths

    find the encentricity,the foci and vertex and the equation of directrix and asymptote to the equation give the ellipse below 25x^2+4y^2-50x-16y-59=0
  90. maths help!!!

    the first four terms in the expansion of (1-x)^n are 1-6x+ax^2+bx^3.find the n and also the respective value for a and b
  91. physics

    compute the mass of the following assuming if it to be a sphere of radius 6370km
  92. maths

  93. math

    How to write a real world problem that compares the ratios 5to 9 and 12to 15
  94. physics

    The displacement of a particle is given by S = a+bt+ct^2. Deduce the dimensions of the constants,a,b,and c appearing in the question.
  95. Math Trigonometry

    A bus driver driving south along a highway is 16 km from the nearest city. After traveling a distance of 32 km, the driver finds he is 19 km away from the same city. Find the bearing of the town from the second position of the motorist.
  96. math 8th

    The scores on a test are found by adding and subtracting points as shown in table below. If Salazar's score on a 15 question test was 86 points,how many of his answers were correct, incorrect and blank. Answers Points correct +8 incorrect -4 blank -2 86
  97. US History

    Why were yeoman farmers often called "the backbone of the South" in the period from 1820 to 1850? A) When government officials wanted to oversee how Southern land was cultivated, yeoman farmers challenged the idea. B)Yeoman farmers grew vegetables, raised
  98. Physics

    1. A box is placed on the end of a 3 meter plank. One end of the plank is gradually raised and it is observed that the box begins to slide when the board reaches an angle of 25 degrees. a. Determine how long the box will take to reach the end of the plank
  99. Math

    Peter has 4 more $50 bills than $10 bills in his wallet. If the total amount of money in his wallet is $380, how many $10 bills does Peter have? I know the answer but I don't know how to set up the equation.

    A pellet (20g) is launched horizontally off a cliff (20m high) from a spring-loaded gun. The spring has constan k=1800 N/m and is compressed 0.10m before launch. How much kinetic energy does the pellet have just before it hits the ground? How fast will the


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