1. Science

    Determine the minimum electric potential difference (in volts) that must be applied to accelerate an α-particle so that on interaction with a hydrogen atom, a ground state electron will be excited to n = 6.

    asked by Anonymous on March 2, 2013
  2. Physics- Circuits

    At time t=0, a potential difference of 475 V is applied to a coil with an inductance L=0.642 H and a resistance R=36 ohms. How long does it take to reach 20 percent of maximum energy in the inductor?

    asked by Bobby on April 12, 2008
  3. chemistry

    Determine the minimum electric potential difference (in volts) that must be applied to accelerate an α-particle so that on interaction with a hydrogen atom, a ground state electron will be excited to n = 6.

    asked by adex on February 25, 2013
  4. English

    I have to take out embellishments, misquotations, false benefits and unethical tactics out of these sentences. I need help. Factory-trained technicians respond to all our calls. "The service contract...on the whole...applied to upgrades.

    asked by Jennie on January 11, 2017
  5. Math

    The cost for a business to make greeting cards can be divided into one-time costs (e.g. a printing machine) and repeated costs (e.g. ink and paper). Suppose the total cost make 500 cards is $1,100, and the total cost to make 650 cards is 1,400. What is the

    asked by Dylan on April 8, 2016
  6. Physics

    Which of the following forces does NOT have a zero work done on the object. Choices The normal force on a box that slides across a horizontal level floor. The weight on a box that slides across a horizontal level floor. The normal force on a box that

    asked by rose on November 11, 2010
  7. physics

    1 A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the

    asked by nandeve on February 12, 2014
  8. phy

    A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the

    asked by christ on January 28, 2013
  9. physic

    1 A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the

    asked by mike on April 23, 2012
  10. physics

    passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the

    asked by nandeve on February 9, 2014
  11. Physics

    I have a question on fluids. Water in a section 1.2m wide, 2m high. retained by sluice gate that can pivot about its base. There is a retaining cable at the top of the gate. Determine tension in the retaining cable at the top of the gate when the depth of

    asked by Danny on April 13, 2015
  12. Mechanical Principles

    I have a question on fluids. Water in a section 1.2m wide, 2m high. retained by sluice gate that can pivot about its base. There is a retaining cable at the top of the gate. Determine tension in the retaining cable at the top of the gate when the depth of

    asked by Danny on April 13, 2015
  13. Check my answered questions.

    For the combining gas law P1V1/T1=P2V2/T2 home work assignment I did three answers on my own and would like you to check them if they are right. If for some reason the answers that I provided don't seem correct please provide me with the right answers.

    asked by Lizy on May 2, 2008
  14. science

    Would love to get your thoughts on whether the following statements would be considered an applied science or basic science when it comes to psychology. Place an "A" if the statement is psychology as an applied science and "B" if the statement is

    asked by Sue on October 22, 2018
  15. math

    Write and solve the number sentences she could use. Ms. Cloudcover, the TV weatherperson, noted that Sunday’s temperature was 12, much warmer than the -7 on Friday and the -2 on Saturday. She remembered that Thursday’s temperature was 0 and checked to

    asked by Anonymous on February 21, 2011
  16. Pre-Calc.

    The two equal sides of an isosceles triangle are each 24 centimeters. If each of the two equal angles measures 60, find the length of the base and the altitude. (leave your answer in radical form).

    asked by anonymous on November 27, 2014
  17. howard

    In checking the angles of a section of a bridge support, an engineer finds the expression sin(2 cos-1 0.70). Write a paragraph explaining how the value of this expression can be found without the use of a calculator.

    asked by mike on February 25, 2010
  18. Math

    The two equal sides of an isosceles triangle are each 24 centimeters. If each of the two equal angles measures 60, find the length of the base and the altitude. (leave your answer in radical form).

    asked by anonymous on November 27, 2014
  19. Physics

    Three equal masses are suspended from a frictionless, massless pulley system, as shown. Once the system has reached equilibrium, 1) what angles will the strings make with respect to the horizontal

    asked by Anonymous on October 7, 2016
  20. trigonometry

    From a point 150 ft from the base of a building the top and the base of a flagpole on a roof edge have angles of elevation of 27degrees49' and 21degrees42' respectively. Find the height of the pole.

    asked by nina on January 6, 2014
  21. Math repost for Jose

    Math - jose, Sunday, October 14, 2007 at 12:55pm

    asked by Ms. Sue on October 14, 2007
  22. Geometry

    Hello! Thanks for checking my question out! ____ 6) Name a pair of vertical angles. Image URL: goo.gl/nH83eT My Answer: AFE DFE Could someone please check my answer? Thanks! - Da Fash

    asked by Da Fash on September 25, 2017
  23. maths-urgent

    Rudransh has a piece of cardboard in shape of a quadrilateral. He cuts it into two triangles such that angles formed at the vertices are bisected. He wants to find out whether the two triangles are congruent or not without actually super positioning them

    asked by Anonymous on January 10, 2013
  24. MATHS

    In triangle ABC, BC is produced to D. If angle ACD = 110 degree and angle ABC = 70 degree. Find angle BAC. Give reason.

    asked by Job on March 12, 2012
  25. math

    when a large cake is cut into pieces that each weigh 3 ounces, it yields 110 pieces. how many pieces would the cake yield if it were cut into 2 ounce piece instead?

    asked by anon on July 21, 2013
  26. math

    when no more than 110 units are produced, the cost of producing x units is given by C(x)=.2x^3 - 25x^2 + 1531x + 25,000 How many units should be produced in order to have the lowest possible average cost?

    asked by anonymous on February 12, 2011
  27. Physics

    A mass, 5.0 kg is being pulled from rest with an applied force of 25N. The friction force is 10.0N. How far has it moved after 6.0s?

    asked by Furkan on June 17, 2015
  28. physics

    a force of 10n cause a spring to extened by 20 mm find? the extension of the spring when 25n is applied

    asked by mubarak on November 30, 2014
  29. physics

    A crate has a mass of 27 kg. What applied force is required to produce an acceleration of 3 m/s2 if the frictional force is known to be 98 N?

    asked by Anonymous on September 3, 2012
  30. Chemistry - Solutions

    Can the term hydration be applied to the solvent carbon tetrachloride? Explain your reasoning. If it cannot be used, what term can?

    asked by Dick Rogers on October 18, 2007
  31. Phisic mechanic

    An applied force varies with position according to eq. Fx = 3x3 - 5, where x is in m, and Fx in N. What is the work of this force on a body that moves from x to x = 4 m = 7 m?

    asked by cls on October 4, 2010
  32. physics

    an object with a mass of 1500g accelerates 10.0 m/s2 when an unknown force is applied to it. What is the amount of the force?

    asked by Jameel Williams on January 13, 2016
  33. Chemistry - Solutions

    Can the term hydration be applied to the solvent carbon tetrachloride? Explain your reasoning. If it cannot be used, what term can?

    asked by Dick Rogers on October 21, 2007
  34. PHYSICS

    10N force applied at an angle of 30 degrees with the horizontal, find its horizontal component

    asked by RAZZAK on May 20, 2017
  35. physics

    A crate has a mass of 20 kg. What applied force is required to produce an acceleration of 3 m/s2 if the frictional force is known to be 95 N?

    asked by yanna on December 2, 2018
  36. math

    the rule ( x, 3/4) is applied to a polygon. the given point is on the original plygon. find the image of the point. a= (6,8) b=(9,8) c= (3/2, 4,3)

    asked by chandni on April 10, 2008
  37. math plz help easyy!

    the rule ( x, 3/4) is applied to a polygon. the given point is on the original plygon. find the image of the point. a= (6,8) b=(9,8) c= (3/2, 4,3)

    asked by chandni on April 10, 2008
  38. science

    How much work is done by the system if the internal energy decrease by 100j when 200j applied to the system

    asked by Haopu on November 23, 2016
  39. Physics

    A force of 1000 N is applied to a 1200 kg car. If the coefficient of friction is 0.04, what is the car's acceleration?

    asked by Maria Ellah on January 30, 2012
  40. Physical Science

    an object with a mass of 50kg is hurled at an acceleration rate of 30 m/s2. How much force was applied to the object?

    asked by Casey on December 11, 2012
  41. physics

    a net force of 72 n is applied to a 48 kg box starting from rest for 8 s. what is the final velocity of the box?

    asked by Anonymous on October 14, 2014
  42. Statistics

    In reagards to correlation and regression how can that be applied to accounting. I am trying to find some websites where i could apply one of the above to accounting.

    asked by Caryn on April 30, 2008
  43. Chemistry

    When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s2. How far does the car travel before it comes to a stop?

    asked by Autumn on January 15, 2016
  44. physics

    Three blocks are in contact with each other on a frictionless, horizontal surface, as shown below. A horizontal force is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 5.00 kg, and F = 22.0 N

    asked by diamond on March 3, 2010
  45. PHYICAL

    A force of 70N is applied on a 6kg box, if the frictional coefficient is 0.3 . What is the box acceleration.

    asked by bbbb on July 8, 2012
  46. Science- physics

    A 10 kg lawnmower is pushed along by a force applied at a 20* angle to the horizontal. If the mower accelerates at 3.4 m/s what is this force?

    asked by Ray on October 28, 2012
  47. Physics

    A crate has a mass 24 kg. What applied force is required to produce an acceleration of 3m/s^2 if the frictional force is 90 N.

    asked by Adam on October 23, 2010
  48. physics

    In the figure , the total resistance is 10.0 kOmega, and the battery's emf is 28.0 V. If the time constant is measured to be 40.0 mu s. Calculate the total capacitance of the circuit.Calculate the time it takes for the voltage across the resistor to reach

    asked by Jose on March 2, 2011
  49. math

    last weekend, I went to play the nearby park. It was real fun! I rode my new bicycle tat Mom had gifted me on my birthday. On reaching the park, I saw that there were a total of 15 bicycles and tricycles. if the total number of wheels was 35, how many

    asked by Fred on July 31, 2010
  50. Physics

    We can roughly model a gumnastic tumbler as a uniform solid cylinder of mass 75 kg and diameter 1.0 m. If the tumbler rolls forward at .50 rev/s. A) how much total kinetic energy does he have and B) what percent of his total kinetic enery is rotational?

    asked by Sarah on June 25, 2009
  51. math

    the measures of the angles of a triangle are represented by 2x+30, 5x+10 and 7x the triangle is

    asked by dana on January 11, 2013
  52. math

    Are corresponding angles in similar triangles are always congruent? I think it's always congruent but I'm not sure. Am I right?

    asked by keisha on November 23, 2007
  53. geometry

    If 9x and(5x+8) are the measures for complementary angles, what are the measures of each angle

    asked by Jenny on March 20, 2008
  54. 5th grade

    i have four sides.all opposite sides are parallel.i have no right angles.

    asked by Anonymous on November 25, 2010
  55. ggggg

    in a triangle one angle is twice of other and their sum is the third angle .the angles are

    asked by Anonymous on January 24, 2016
  56. math

    a triangle with 3 congruent angles and 3 congruent sides is what?

    asked by christian on September 24, 2008
  57. Math

    It has four side and all opposite side are parallel and has no right angles

    asked by chris on October 26, 2015
  58. trig

    Find all angles of a right triangle triangle RST given that r = 18 cm and s = 20 cm

    asked by Abigail on April 16, 2008
  59. Geometry

    If two angles are congruent, must their supplements be congruent? Thank you, anyone, in advance. c[=

    asked by Rachel on September 25, 2007
  60. geometry

    Findd the numerical measures of the angles whose measures are: x, 3x-10, and 3(55-x)

    asked by Sincerewish on February 1, 2012
  61. math

    media service charges $30 for a phone and $20 month for its economy plan. find a model that determines the total cost,C(t) of operating a media services phone for 1 months C(t)= use the model to find the total cost for 3 months of service total cost=

    asked by Anonymous on September 19, 2010
  62. 7th Math

    A plumber must bend a piece of tubing twice, allowing 5/8 inch for each bend. use the total of 12 1/2, 16 3/4, and 18 3/4. To find the total length of tubing needed?

    asked by K on October 27, 2011
  63. maths

    A group of friends are planning a road trip. If they all contributed $24, then they would be $6 short of the total. If they all contributed $25, then they would have $3 more than needed. What is the total cost of the trip?

    asked by Rox on February 13, 2013
  64. math

    A cube has a total surface area of 384 ft². Find the total surface area of the largest sphere that will fit into it.

    asked by maribel on January 31, 2010
  65. math

    sid went to play in the nearby park. on reaching the park,he saw that were a total of 14 bicycles and tricycles. if the total number of wheels was 32, how many tricycles were there ?

    asked by ritesh on March 9, 2016
  66. algebra

    supose you bought eight oranges and one grapefruit for a total of $4.60. later day, you bought six oranges and three grapefruits for a total of $4.80. what is the price of each type of fruit?

    asked by alex on January 8, 2013
  67. arithmetic

    A group of friends are planning a road trip. If they all contributed $24, then they would be $6 short of the total. If they all contributed $25, then they would have $3 more than needed. What is the total cost of the trip?

    asked by please help me out!!! please on February 11, 2013
  68. Math

    A total of $4100 was invested, part of it at 5% interest and the remainder at 10%. If the total yearly interest amounted to $370, how much was invested at each rate?

    asked by ---- on September 19, 2017
  69. Math - Year 10 - Simult. Equations

    Q) Mr Yang's son has a total of twenty-one $1 and $2 coins in his money box. When he counts his money, he finds that it's total value is $30. How many coins of each type does he have?

    asked by ^ ^ on June 3, 2016
  70. math

    The student council has a canned food drive. They collected a total of 63 cans on Wednesday. This is 21% of the total. How many canned goods were collected in all?

    asked by andra on May 9, 2013
  71. Geometry

    The total area of all the faces of a rectangular prism is 22, and the total length of all its edges is 24. Find the length of the internal diagonal of the prism. Thank you!

    asked by Sheenybeany on July 29, 2014
  72. chemistry

    Use the percent composition of total protein in skim milk to determine the percent of the total protein that is due to the casein fraction.

    asked by Anonymous on September 24, 2015
  73. algebra

    A total of $80,000 is invested in two funds paying 2.3% and 3.1% simple interest . The total annual interest is $2000. How much is invested in each fund?

    asked by Jasmine on June 20, 2015
  74. Science

    A lever has a 9-N load 1.5m from the fulcrum. Where should a 0.5N effort force be applied to balance the load?

    asked by Micheal on February 17, 2012
  75. math

    What is the importance of Algebraic Reasoning? What is an example of how this type of reasoning can be applied outside of a mathematics classroom?

    asked by luli on July 24, 2009
  76. chemistry(please clarify my thoughts)

    for MO between C-S, is the sigma bond higher in energy than pie bond since it is applied to C.So when we do MO for C-S,do we use that rule in this as well

    asked by phys on April 8, 2010
  77. Advanced Algebra 1

    A polygon has a perimeter of 24mm. Find the new perimeter after a scale factor of 1/4 is applied?

    asked by Jordan on October 14, 2010
  78. maths/physics

    A rubber ball weighs 49 N. What is the acceleration of the ball if an upward force of 69 N is applied?

    asked by Anonymous on August 17, 2011
  79. physics

    forces of and are applied at the same point. the angle between F1 and F2 is 60.0◦ and the angle between F2 and F3 is 80.0◦. find the resultant force.

    asked by resultant force on February 8, 2013
  80. Physics

    A single 11 Newton force is applied to an object of mass 19 kg. What is the acceleration of this object in m/s2

    asked by Aly on January 3, 2010
  81. Physics

    The applied force of a 2.0-kg object is 8.4 N [E] and the friction is 2.2 N [W]. What is the motion of the object? Can I use the formula Fnet = ma?

    asked by Marty on March 2, 2008
  82. Physical Science

    What is the weight of a 4.82 kg backpack in Newton and the acceleration of the backpack if a net force of 10.0 N is applied in m/s2?

    asked by Rashida on August 29, 2014
  83. physics

    a force of 20 n is applied to a 10 kg mass on a level frictionless surface what is the acceleration of the mass?

    asked by irene on November 14, 2011
  84. Physics

    A lever has a 9-N load 1.5m from the fulcrum. Where should a 0.5N effort force be applied to balance the load?

    asked by Micheal on February 17, 2012
  85. Science

    A 50N- force was applied to a 10kg ball. Find the acceleration of the ball

    asked by Joy on November 7, 2012
  86. Physics

    Alcohol flows smoothly through a horizontal pipe that tapers in cross-sectional area from A1 = 41.9 cm2 to A2= A1/3. The pressure difference Äp between the wide and the narrow sections of the pipe is 11.1 kPa. What is the volume flow rate ÄV/Ät of the

    asked by Rebecca on December 2, 2009
  87. Chemistry

    A stressed chemistry student is hyperventilating into a paper bag. The student stops to wipe his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 °C. The bag is 0.75L full. The student then goes at it

    asked by Lauren on March 22, 2011
  88. Chemistry

    A stressed chemistry student is hyperventilating into a paper bag. The student stops to wipe his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 °C. The bag is 0.75L full. The student then goes at it

    asked by Lauren on March 22, 2011
  89. Can I get some help on my math plz?

    The intersection of roads S and T creates a 44.4 degree angle. What are the complementary and supplementary angles of this intersection? A. The comp. angle is 22.2 degrees and the supp. angle is 55.6 degrees. B. The comp. angle is 55.6 degrees and the

    asked by Anonymous on February 23, 2016
  90. ap chem

    a solution is prepared by dissolving 4.87 g of sodium dichromate in 25.0 ml of water. (d=1.00g/mL).calculate a. the mass percent of sodium dichromate in the solution. b. the mass percent o water in the solution. c the mole fraction of sodium dichromate in

    asked by just on February 20, 2007
  91. math

    Write a function rule for the total cost. One frozen yogurt store sells frozen yogurt for $3.00 per cup and $1.25 per topping. Write a linear equation to show the total cost of a cup of frozen yogurt. Then calculate the total price for one cup of frozen

    asked by callie on April 27, 2015
  92. Physics

    Two buckets of sand hang from opposite ends of a rope that passes over an ideal pulley. One bucket is full and weighs 110 N ; the other bucket is only partly filled and weighs 65 N . You release the lighter bucket and the heavier one descends. What is the

    asked by Luke on November 8, 2015
  93. Physics

    A stuntman is being pulled along a rough road at a constant velocity by a cable attached to a moving truck. The cable is parallel to the ground. The mass of the stuntman is 110 kg, and the coefficient of kinetic friction between the road and him is 0.825.

    asked by Kelly on March 20, 2013
  94. physics

    A crystalline solid consists of atoms stacked up in a repeating lattice structure. The atoms of a crystal reside at the corners of cubes of side L = 0.200 nm. One piece of evidence for the regular arrangement of atoms comes from the flat surfaces along

    asked by Ania on October 12, 2012
  95. PHYSICS

    An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car? A. 3.75 km/h B. 62.5 km/h C. 1250 km/h D. 250 km/h The only way to find the average speed is to divide

    asked by Anonymous on July 21, 2010
  96. Ecoomics

    commodity Price Elasticity of demand ---------- Potatoes 0.3 If I know there is a fall in the price of potatoes how do i predict the corresponding direction of change in total spending? Total spending on potatoes is P*Q. Elasticity is (%change in

    asked by Jon on September 24, 2006
  97. math

    consider the minimum payment you just calculated determine the amount of interest and the amount that was applied to reduce the principal?

    asked by Regina on March 13, 2013
  98. Science

    If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity?

    asked by Audrey on October 2, 2011
  99. Chemistry

    A current of 3.94 A is pass through a Pb(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 5.40 g of lead?

    asked by Brianna on July 24, 2013
  100. physics

    How much applied force is needed to accelerate a 2.0 kg block of wood at 4.0m/s^2 along a rough table, against a 10 N force of friction?

    asked by Melissa on March 25, 2012