1. Physics

    You attach one end of a spring with a force constant k = 893 N/m to a wall and the other end to a mass m = 2.02 kg and set the mass-spring system into oscillation on a horizontal frictionless surface as shown in the figure. To put the system into

    asked by Kristin on April 22, 2015
  2. intro to probability

    In a study of particulate pollution in air samples over a smokestack, X1 represents the amount of pollant per sample when a cleaning device is not operating, and X2 represents the amount per sample when the cleaning device is operating. Assume that (X1,

    asked by amelie on April 20, 2008
  3. Ap Phyics

    Figure shows an overhead view of a 0.024 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 6 N and is at ¥è1 = 25¢ª. Force F2 has a magnitude of 10 N and is at ¥è2 =

    asked by Alexander on April 21, 2012
  4. physics

    Figure shows an overhead view of a 0.026 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 4 N and is at ¥è1 = 27¢ª. Force F2 has a magnitude of 6 N and is at ¥è2 =

    asked by jr on January 26, 2011
  5. physics

    Humans can hear sounds with frequencies up to about 20.0 kHz, but dogs can hear frequencies up to about 40.0 kHz. Dog whistles are made to emit sounds that dogs can hear but humans cannot. If the part of a dog whistle that actually produces the high

    asked by AKbar on April 17, 2012
  6. (1-11) Chemistry - Science (Dr. Bob222)

    Liquid chloroform (CHCl3) is placed in a closed container and allowed to equilibrate with chloroform vapor. With the temperature held constant, additional chloroform is introduced into the system, and the vapor-liquid equilibrium is reestablished.

    asked by Ana on May 10, 2014
  7. Conservation if Linear Momentum

    A student (m = 66 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 s. The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the

    asked by Angela on February 26, 2012
  8. Algebra

    The formula relating the speed of a vehicle (S, in miles per hour) that a car was traveling at the moment the brakes were applied causing the vehicle to skid to a stop, traffic investigators use the formula S = square root of 30fL, where L is the length(in

    asked by Anonymous on May 11, 2017
  9. chemistry

    1.)What is the boiling point of the water in your radiator if 2.00kg of antifreeze is added to 9.00 * 10^3 grams of water? 2.)Assuming that each system behaves ideally, which solution (0.25 m KCl or 0.25 m C3H8O3)would have the lower freezing point?

    asked by blah..unsure..plz help!! on March 6, 2009
  10. Foreign languages

    I left out the following doubts. I really hope you can consider them, too. 1) He has grown out of his shoes, so we'll need to buy him new ones. Hold the line is the same as hold on the line? 2) It wasn't necessary you bought the milk (wrong?). You needn't

    asked by John on May 27, 2012
  11. physics - converting radians to degrees

    i know how to convert degrees to radians.. ie: 40* x (2pi rad/360*) = 0.70 rad .. i cant figure out how to do the opposite.. can anyone show me how? thanks! ~lor .70 rad (360 deg/2PI rad )= 40o radians = degrees*2*pi/360 = 0.69813 degrees = rad*360/2*pi

    asked by TechnoBoi11 on January 27, 2007
  12. math

    The volume of a sphere depends on the sphere's radius:V=4/3πr^3.(A)If the radius of a sphere is 3 feet,what is the volume?Give exact and approximate answers and use correct units.(B)Solve for r in the volume formula.(C)If the volume of a sphere is 20

    asked by Andrea on April 12, 2018
  13. Physical Science

    1. Which equation correctly shows beta decay? (A) 210/82 Pb -> 209/81 Tl + 0/-1 e + y (B) 210/82 Pb -> 209/83 Bi + 0/-1 e + y (C) 210/82 Pb -> 210/83 Tl + 0/-1 e + y (D) 210/82 Pb -> 210/83 Bi + y (E) 210/82 Pb -> 210/83 Bi + 0/-1 e + y 2. The half-life if

    asked by CJ on November 18, 2013
  14. Math

    A quart is approximately sixty cubic inches. A cubic feet of water weighs approximately sixty pounds. Therefore, a quart of water weighs approximately A. 2 lbs B. 3 lbs C. 4 lbs D. 5 lbs

    asked by Jordyn on August 8, 2018
  15. Math

    A tree casts a shadow 10 feet long. A 6-ft. man casts a shadow 4 ft. long. The triangle formed by the tree and its shadow is similar to the triangle formed by the man and his shadow. How tall is the tree?

    asked by Caitlin on December 2, 2010
  16. math

    Identify the contrapositive of the following statement, then decide if the contrapositive is true or false. "if angle 1 congruent to angle 2, then symbol representing angle 1andSymbol representing angle 2are vertical angles. Whether or not your statement

    asked by Kgirl on July 30, 2007
  17. Physics

    The circus has come to town, and Lael the Magnificent will kick a grape into her assistant's waiting mouth (not to worry − the grape is freshly washed). She starts at the origin and boots the grape at an angle 20.0° east of north. The grape starts from

    asked by Projectile Motion on April 9, 2014
  18. Financial Management

    Lansing Inc. has decided to expand. During the last year the company borrowed $5 million for a term of 30 years to finance a new factory, and sold 60,000 shares of stock at $51 per share to pay for new equipment. Lansing also made a payment of $500,000 on

    asked by Tisha on August 30, 2010
  19. Physics

    A barge with mass 1.7×105 kg is proceeding down river at 6.1 m/s in heavy fog when it collides broadside with a barge heading directly across the river. The second barge has mass 2.83×105 kg and was moving at 4.2 m/s. Immediately after impact, the second

    asked by ry on January 25, 2010
  20. Chemistry

    Several years ago a company invented plastic ice cubes. These were colored plastic cubes with frozen water (or another substances) inside. That way, as the solid melted, it could cool your drink, but did not dilute it with extra water (from the melted

    asked by Kat on April 24, 2011
  21. Science

    I have two questions and I have answers for them and I don't know if there right or not. The ones that have stars by the answers is the answers I picked. 1. Complete this sentence. If volume remains the same while the mass of a substance ________, the

    asked by Dan on August 22, 2017
  22. Chemistry

    Mass of metal=45.00 grams Initial temp= 20.0 degrees Celcius Final temp= 87.0 degrees Celcius 4.184 J/g-specific heat of H2O The metal was heated up from initial temp to final temp. What would be the metal's highest temperature? The specific heat of the

    asked by Paige on June 7, 2018
  23. Physics

    Two students are on a balcony 19.6 m above the street. One student throws a ball vertically downward at 14.7 m/s. At the same instant, the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way

    asked by Becca on September 25, 2006
  24. Science

    Please someone help me figure this one out with three reasons. A group of researchers from a local lab are trying to get funding for a research study to determine if the color blue is better than the color green. They have written a proposal and submitted

    asked by Mark on November 20, 2015
  25. Algebra

    Joanie takes a $6000 loan to pay for her car. The interest rate on the loan is 12%. She makes no payments for 4 years, but has to pay back all the money she owes at the end of 4 years. How much more money will she owe if the interest compounds quarterly

    asked by Cassie on April 1, 2009
  26. physics

    An object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at the same value. Suppose that the radius of the

    asked by Mary on February 21, 2007
  27. Chemistry

    What's the difference between the pressure of a system and the partial pressures in relation to Le Chatelier's principles? I know that when the pressure of the system is increased, it goes to the side with less moles/particles and when decreased it will go

    asked by Sunny on July 13, 2017
  28. Geometry

    Circle O is inscribed is square ABCD, and at the same time, is circumscribed about square PQRS. WHich are is the smaller area, the region inside the inscribed circle minus the area of square PQRS or the are inside square ABCD minus the area of the

    asked by Anonymous on May 20, 2012
  29. Science

    1. convert .621 hl to liters? 2. Convert .013 dl to liters? 3. Convert .00078 mg to kg? 4. Convert 2.45 g to cg? 5. convert 1.9 km to cm? 6. convert .0476 mm to dam? 7. Convert 6.4 ul to nl? Do them all this way: (a) figure out what the units mean. For

    asked by Biologyconfused.... on January 14, 2007
  30. Math: Distance and Midpoint

    Three points on the edge of a circle are (-220, 220), (0, 0), and (200, 40), where each unit represents 1 foot. What is the diameter of the circle to the nearest 10 feet? I know the answer is supposed to be 550 ft, but I keep coming up with the wrong

    asked by Anonymous on April 24, 2012
  31. English

    Come, brothers all! Shall we not wend The blind-way of our prison-world By sympathy entwined? Shall we not make (5) The bleak way for each other’s sake Less rugged and unkind? O let each throbbing heart repeat The faint note of another’s beat To lift a

    asked by Kai on September 4, 2018
  32. Chemistry help plzzzzz!!!!!

    I've tried solving this problem 100x and i keep getting it wrong. I don't know where i am going wrong. Wouldnt it be: (100ml * 4.180 * 6.49) + (6.50*6.49) 2713+42.2=2755.2= 2755.2/0.05=55104 Then convert to kj so 55104/1000=55.104 which would be 55.1 for

    asked by Ashley on April 10, 2014
  33. Massey

    In the field event known as the hammer throw, an athlete spins a heavy mass in a circle at the end of a chain. When the athlete lets go of the chain, the mass flies off in a parabolic arc; the winner is the one who gets the maximum distance. For male

    asked by Kassa on March 22, 2016
  34. Urgent Chem help.plz

    The crystal structure of lithium sulfide (Li2S) is pictured here. (Intro 1 figure) The edge length of the unit cell is 5.88*10^2^2 pm. i guess it is FCC ( face cenred cubic) 1-- What are the coordination numbers of and Li^+ and S^2- in the lithium sulfide

    asked by Julia on January 24, 2009
  35. Physics

    Suppose at one point along the Nile River a ferryboat must travel straight across a 1.29-mile stretch from west to east. At this location, the river flows from south to north with a speed of 2.58 m/s. The ferryboat has a motor that can move the boat

    asked by Courtney on February 4, 2016
  36. chemistry

    The bromination of acetone is acid-catalyzed. CH3COCH3 + Br2 CH3COCH2Br + H+ + Br - The rate of disappearance of bromine was measured for several different concentrations of acetone, bromine, and H+ ions at a certain temperature. [CH3COCH3] [Br2] [H+] rate

    asked by danielle on February 1, 2010
  37. Chemistry

    What will happen when 100 ml of diethyl ether are added to 100 ml of water and thoroughly mixed? a.) Water will form a separate layer on top of the ether layer. b.)The temperature of the mixture will significantly increase. c.)There will be a chemical

    asked by Anna on August 12, 2012
  38. Physics

    A horizontal water pipe goes from a large diameter to a small diameter and then back to the first diameter as shown in the figure below. The level of water (8cm in the larger tube and 4 cm in the constricted tube) in the small vertical tubes provides us

    asked by Anna on December 4, 2015
  39. Math

    The Romascos hope to have $2,000 in 3 years for a down payment on a new pool. They invest $1,000 in an account that pays 8% interest at the end of each year. Will they have enough money at the end of 3 years to meet their goal of a down payment? What is

    asked by Mac on March 12, 2015
  40. Math

    Need help on writing a system of equations. I can figure it out without the systems but now sure how to write a systems of equations not knowing how many the box can hold. Dark chocolates cost $0.25 each and milk chocolates cost $0.15 each. Tom wants twice

    asked by Brandi on October 11, 2015
  41. english

    I have to find three or four nouns, adjectives, adverbs and verbs from a book. Please can you tell me if I am right? noun - Stanley, lizard, toothbrush. adjectives - sweet, fresh onions. The answer sweet,fresh. He suddenly realised where he'd seen the gold

    asked by peter on December 10, 2011
  42. chemistry plz helpp!

    A) 9.8g of an alcohol A completely reacts with an excess of sodium , and a gas is released. When the reaction ceases the volume of the gas is 1.6L measured at a temperature of 22ºc and under a pressure of 1 bar.  a- What gas is released in this reaction,

    asked by angy on June 28, 2016
  43. chemistry

    A) 9.8g of an alcohol A completely reacts with an excess of sodium , and a gas is released. When the reaction ceases the volume of the gas is 1.6L measured at a temperature of 22ºc and under a pressure of 1 bar. a- What gas is released in this reaction,

    asked by angy on June 28, 2016
  44. thermochemistry

    . Mountain climbers often brew tea by melting snow, which they heats over a stove. Our stove burns butane (C4H10), which has a heat of combustion of -2878 kJ/mol. The temperature of the snow is initially at -20 °C, and we need 80 °C water to brew tea. a.

    asked by David on April 9, 2017
  45. physics

    An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. After 4.0 min the solid reaches its melting point of 80⁰C, and it remains at that temperature for 3.0 min until completely melted. After a further 6.0 min

    asked by Alicia on November 30, 2014
  46. algebra

    complete the table to answer 1-4. i don't put a table here because i can't and it's time consuming, so i made up word problems for the table. 1. for the abc company, you own 5 shares and lost $2 on monday, gained $5 on tuesday, and lost $1 on wednesday.

    asked by anon on August 30, 2015
  47. physics

    A point charge of -8.4 µC is at the origin. a)What is the electric potential due to this charge at (x,y) = (3.5 m, 0 m) b) What is the electric potential due to this charge at (x,y) = (-3.5 m, 0 m) c) What is the electric potential to this charge at (x,y)

    asked by sonia on September 16, 2011
  48. chemistry

    for the equilibrium H2+CO2H2O+CO Kc=3.18 at 1106K. if each of the four species was initially present at 3.000M calculate the equilibrium concentration of the CO at this temperature..... OK I can get as far as equilibrium (final) H2O=3.000-x CO=3.000-xx

    asked by Andy on May 9, 2010
  49. S.S.

    Which of the following is an accurate comparison of Adams and Jackson? A. Adams supported efforts to promote the growth of businesses, while Jackson supported efforts to help the ordinary man. B. Jackson supported the idea of high tariffs to increase

    asked by ... on November 2, 2017
  50. Grammar and Composition

    Body The middle part of your paper is the body of the paper. It develops the most important points, which support your thesis statement. It contains three paragraphs. These paragraphs follow the points listed in the three-step format. Paragraph 2 (first

    asked by y912f on October 22, 2009
  51. Physics

    PLEASE HELP! I'm doing a physics demonstration, and in part of it I'm trying to explain why steel wool burns and normal steel doesn't. I know it's something to do with the smaller surface area and/or mass but I don't know WHY it burns because of this. Can

    asked by Jo on September 5, 2006
  52. Chemistry

    Calculate the enthalpy change (ΔH) for: HCl(aq) + NH3(aq) → NH4Cl(aq) The reaction of 50.0 mL of 1.00 M HCl with 50.0 mL of 1.00 M NH3 causes a temperature rise of 6.4 ˚C in the resulting 100.0 mL of solution. The NH4Cl solution has a density of 1.005

    asked by Jim on September 15, 2015
  53. Math

    The scale of the map is missing. The actual distance from Liberty to West Quall is 72 miles and it is 6 inches on the map. a.What is the scale of the map? b. Foston is between Liberty and West Quall and is 4 inches from Liberty on the map. How far is

    asked by Matt-Please Help on September 26, 2016
  54. Physics

    A force 1 of magnitude 7.20 units acts on an object at the origin in a direction θ = 29.0° above the positive x-axis. (See the figure below.) A second force 2 of magnitude 5.00 units acts on the object in the direction of the positive y-axis. Find

    asked by Haroula on February 14, 2012
  55. statistics

    It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

    asked by sharon on August 22, 2010
  56. Physics

    A box of mass m=1.5 kg is attached to a spring with force constant k=12 and suspended on a frictionless incline that makes a 30 degree angle with respect to the horizontal. With the spring in its unstretched length, the box is released from rest at x=0.

    asked by Jake on March 27, 2012
  57. accounting

    Incremental Analysis question: I know the answer is $4.20, but I can't figure out why. Sandusky Inc. has the following costs when producing 100,000 units: Variable costs $400,000 Fixed costs 600,000 An outside supplier is interested in producing the item

    asked by John on March 14, 2009
  58. Physics helppp

    Figure 5-53 shows a man sitting in a bosun's chair that dangles from a massless, frictionless pulley and back down to the mans's hand. The combined mass of man and chair is 94 kg. Fig. 5-53 With what force magnitude must the man pull on the rope if he is

    asked by Sam on July 14, 2010
  59. Physics

    Two forces are applied to a block of mass MM=12.0 kg that sits on a horizontal, frictionless table. One force F⃗ 1F→1 has a magnitude of 10.0 N and is directed at an angle θ1 equal to 37.0° from the xx direction as labeled in the figure below. As a

    asked by Neam on February 23, 2017
  60. Geometry

    A post tree outside of matts house casts a 12 foot shadow at a certain time of day. At the same time matt, who is 6 feet tall, casts a 2 foot shadow. How tall is the tree? How do I solve this? The marketing department of the company is considering making a

    asked by Hannah on April 3, 2015
  61. Physics

    Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that

    asked by Breauna on February 13, 2015
  62. physics

    A solid rod of mass M = 1.00 kg and length L = 85 cm is suspended by two strings, each with a length d = 83 cm (see Figure), one at each end of the rod. The string on side B is cut. What is the magnitude of the initial tangential acceleration of end B? The

    asked by Katie on March 13, 2012
  63. Chemistry

    Back again with another problem :) How do you calculate the enthalpy change, in kJ/mol for the reaction of copper(II) sulfate? 0.0210 mol of copper sulfate was added to 25 cm3 of water. The temperature increased by 14°C. The specific heat capacity of

    asked by Autumn on October 24, 2017
  64. accounting

    I am trying to figure out the cost of merchandise destroyed on Feb. 7th given the following information: Jan 1. Merchandise inventory $144,200 Jan. 1-Feb. 7 Purchases (net) 40,000 Jan. 1-Feb. 7 Sales (net) 70,000 Estimated gross profit rate: 40% (gross

    asked by Kingram on November 19, 2009
  65. Science

    **Which of the following images shows a living organism interacting with a biotic factor in its environment? Incorrect answer A. Correct answer B. Incorrect answer C. Incorrect answer D. **Which of the following shows the correct order from smallest to

    asked by Wiz on November 26, 2018
  66. Calculus I

    Problem: A hot air balloon rising straight up from a level field is tracked by a range finder located 500 feet from the point of liftoff. Express the balloon’s height as a function of the angle the line from the range finder to the balloon makes with the

    asked by Mercury30 on September 2, 2008
  67. College Physics

    Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that

    asked by Nikki on September 18, 2011
  68. Chemistry

    An ice cube at 0 degrees Celsius was dropped into 30.0g of water in a cup at 45 degrees Celsius. At the instant that all of the ice was melted, the temperature of the water in the cup was 19.5 degrees Celsius. What was the mass of the ice cube?

    asked by Help1001 on April 23, 2010
  69. Chemistry

    An ice cube at 0 degrees Celsius was dropped into 30.0 g of water in a cup at 45.0 degrees Celsius. At the instant that all of the ice was melted, the temperature of the water i the cup was 19.5 degrees Celsius. What was the mass of the ice cube?

    asked by Scoob on April 21, 2010
  70. Statics

    For each of the following, state (using symbols) the null and alternative hypotheses. a. Is the mean IQ of a sample of 60 children significantly below the national average of 100? b. Is the proportion of men in the class more than that expected by chance?

    asked by Heather on December 2, 2012
  71. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe

    asked by Chelsea on November 20, 2012
  72. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe

    asked by Chelsea on November 21, 2012
  73. Physics - URGENT

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 ✕ 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.21 ✕ 105 Pa and the

    asked by Physics - URGENT on September 11, 2016
  74. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe

    asked by Ashley on November 9, 2012
  75. Physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe

    asked by Ashley on November 9, 2012
  76. chemistry

    I got E) for the first and couldn't figure out the other one. Can any one verify the first and help with the second?? In which of the following processes is there a decrease in the potential energy of the substances involved? A) a coil spring is compressed

    asked by jake on January 13, 2011
  77. Physics-Need Help fast!

    Part 1 A 3m long pipe is in a room where the temperature is 20 degrees C. What is the frequency of the first harmonic if the pipe is closed at one end? Part 2 sound traveling in air at 23 degrees C enters a cold front where the air temp is 2 degrees C. If

    asked by Megan on July 27, 2011
  78. english - revision

    My instructor suggested that I simplify the essay, so I can easily get my point across. Meanwhile, the feedback received from my peer reviewer was valid and will help me better my expository essay. The things that I will put in practice are the following:

    asked by rose on March 30, 2008
  79. physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

    asked by need help on February 28, 2012
  80. Physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

    asked by James on June 21, 2012
  81. physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

    asked by Anonymous on February 28, 2012
  82. physics

    A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs, between the wall and the pole

    asked by rey on February 27, 2012
  83. Chemistry pretty urgent!!!!!!!

    Chemical bonding question! The partial Lewis structure that follows (Figure 1) is for a hydrocarbon molecule. In the full Lewis structure, each carbon atom satisfies the octet rule, and there are no unshared electron pairs in the molecule. The

    asked by G-Dogg on November 4, 2014
  84. accounting

    Jan Nab is the sole owner of Deer Park, a public camping ground near the Lake Mead National Recreation Area. Jan has compiled the following financial information as of December 31, 2010. Revenues during 2010—camping fees $140,000 Market value of

    asked by apryl on October 6, 2011
  85. Algebra

    Alvin throws the football to a receiver who jumps up to catch the ball. The height of the ball over time can be represented by the quadratic equation -4.9t^2 + 7.5t + 1.8 = 2.1 . This equation is based on the acceleration of gravity -4.9 m/s^2, the

    asked by Klauus on March 8, 2019
  86. Physics-repost, sorry, I still don't understand :(

    A forearm with a mass of 1.2kg supports a ball with a mass of 5.44 kg. The forearm is 0.050m long; it's perpendicular to the arm is 0.35m long, the center of gravity is at 0.15m from the elbow. Find the force exerted by rhe biceps and the force on the

    asked by Sukie on March 1, 2009
  87. physics

    Hey guys! I was hoping someone could help me with the first two questions. I'm seriously brain dead right now and cannot figure these out. baylor.edu/content/services/document.php/110735.pdf 1) Suppose you see the trace to the right on your oscilloscope

    asked by skills on January 17, 2012
  88. Calculus I

    (Six pigpen problem). A 2 × 3 array of six congruent rectangular pigpens (that all look the same from above) will be in the overall shape of a rectangle R. We may use 100 feet of fencing to form the boundaries of the pigpens. Find the dimensions for a

    asked by Rebecca on October 28, 2016
  89. Please help!!!!!!!!!!! algebra

    Quan is shopping. He can buy 2 pairs of pants and 1 shirt for $79.85 ( before tax is added). He can but 1 pair of pants and 2 shirt for $69.85 (before tax is added). To figure out how much a shirt or a pair of pants costs,you must first identify the

    asked by Gabriel on May 4, 2010
  90. English Lit-Please help

    We had to read An Essay on Criticism by Alexander pope and answers some questins. I spent my weekend trying to figure out one of the questions-Could someone please help "Those Rules of old discover'd, not devis'd Are Nature still, but Nature Medthodiz'd

    asked by Jody on February 20, 2012
  91. Chemistry

    Calculate the entropy change accompanying conversion of 1 mole of ice at 273 K and 1 atm pressure into steam at 373 K and 1 atm pressure, given that at 273 K, the molar heat of fusion of ice is 6 kJ/mol and at 373 K, the molar heat of vapourization of

    asked by Mahesh on February 26, 2016
  92. Computer Science

    Overview The purpose of the assignment is to develop a basic understanding and skills programming of input/output ports and device polling. The assignment examines hardware polled input from a push button. Assignment 1 The assignment is based on the

    asked by Dan on November 5, 2012
  93. Chemistry

    Ammonium nitrate, NH4NO3, is used in “cold packs”. Which statement best describes why the products are favored, when the solid is mixed with water? NH4NO3(s) → NH4+ (aq) + NO3- (aq) A) Heat is transferred to the surroundings to lower the temperature

    asked by Bear on October 6, 2016
  94. Math Help

    the square root of 3 times the square root of 15 also the square root of 18 times the square root of 3 To multiply square roots: sq rt of z times the sq rt of y It would be the square root of zy The first one is 3x15 = 45 So it's the square root of 45.

    asked by Tina on May 18, 2007
  95. Physics help

    In Millikan's experiment, an oil drop of radius 1.516 µm and density 0.860 g/cm3 is suspended in chamber C (Figure 22-14) when a downward-pointing electric field of 1.92 105 N/C is applied. Find the charge on the drop, in terms of e. (Include the sign.)

    asked by Frank on February 15, 2007
  96. Physics

    Two bars of identical mass are at 34 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J/(kg · C°). When identical amounts of heat are supplied to each, the glass bar reaches a temperature of 97

    asked by Aaron on December 8, 2011
  97. PHYSICS 102E

    1. A glass flask whose volume is exactly 1000cm^3 at 0 degrees Celsius is completely filled with mercury at this temperature. When the flask and mercury are heated to 100 degrees Celsius, 15.2cm^3 of mercury overflow. If the coefficient of volume expansion

    asked by Akitsuke on December 13, 2008
  98. algebra

    Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the

    asked by alyssa on March 3, 2012
  99. math

    Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the

    asked by alyssa on March 3, 2012
  100. math

    Use the following situation to answer the next four questions. The formula for these questions came from the police department. They use this formula to determine the speed at which the car was going when the driver applied the brakes, by measuring the

    asked by krysta on March 1, 2012