1. Physics- momentum please helppp!!!

    An Astronut is working in space station when he notices that his safety rope tying him to the station has come undone. He is 5.00 meters away and drifting further away at 0.100 m/s. Fortunately he is holding a 1.00 kg hammer as well as a 15.00 kg antenna

    asked by Miso on April 25, 2012
  2. Physics

    1. What is the best way to determine levelness? Plot Position versus Time and compare the linear fit from each direction of travel; slopes should be equal. See if the Acceleration versus Time for both directions are both zero. Plot the Acceleration versus

    asked by Sandhya on March 27, 2008
  3. SAT Practice Essay

    Think carefully about the issue presented in the following excerpt and the assignment below. In many circumstances, optimism—the expectation that one's ideas and plans will always turn out for the best—is unwarranted. In these situations what is needed

    asked by Sahil on November 23, 2008
  4. Health

    3. Which is not a health professional who treats mental and emotional disorders? A psychiatrist B neurologist C social worker D psychologist 4. Arachnophobia, the fear of spiders, is an example of a(n) A. Personally disorder B. Anxiety disorder C. Mood

    asked by Iloveyou on November 1, 2016
  5. science PLZ HELP

    electric charges that are different A) attract each other B) repel each other C) exist in pairs D) do not interact Magnetic field lines around a bar magnet A) are only perpendicular to the magnet B) spread out from one pole and curve around the other C)

    asked by Anonymous on March 31, 2015
  6. English12 (EssayCheck Part 2)

    I know I posted this but, I need suggestions on my essay. I'm going to break this into parts so it doesn't look so long make it easier. Please give me any feedback. I just want to know what you think about it. Don't worry about grammar errors for now. I

    asked by NeedHelp on December 3, 2011
  7. Chemistry

    Earth's oceans have an average depth of 3800 m, a total area of 3.63 108 km2, and an average concentration of dissolved gold of 5.8 10-9 g/L. (a) How many grams of gold are in the oceans? (b) How many cubic meters of gold are in the oceans? Assuming the

    asked by Anonymous on August 25, 2013
  8. Physics C: Mechanics

    A yo-yo has a rotational inertia of 760 g·cm2 and a mass of 200 g. Its axle radius is 4.0 mm, and its string is 100 cm long. The yo-yo rolls from rest down to the end of the string. (a) What is the magnitude of its linear acceleration? cm/s2 (b) How long

    asked by Xavier Hernandez on October 26, 2010
  9. AP Chemistry

    This is the question I am having trouble with: A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode.

    asked by Sarah on April 20, 2015
  10. U.S. History

    How did the influx of immigrants affect cities? A: The influx of immigrants led architects to develop new approaches to housing and transporting large numbers of people. This resulted in the development of skyscrapers, horsecars, cable cars, and electric

    asked by Victoria on October 7, 2015
  11. Chemistry

    13. Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water? 2Na + 2H2O = 2NaOH + H2 So far I have this much figured out: Mass to

    asked by Mitch n' Joey on December 12, 2017
  12. CHM Lab

    Calibration of a 50 ml buret (10 ml,15 ml,20ml, 25 ml,30ml,35ml,40ml,45ml,50ml)(repeated the procedure 3 times) for experimental ; i have observed vol(ml) , temp.C ,for true i have mass(g), true vol. ml and for calibration i found error ml /correction

    asked by Jesi on September 17, 2014
  13. physics

    Pleaseee help explain how to draw the free body diagrams for this problem!!! Two blocks with masses m1 = 10.9 kg and m2 = 79.3 kg, shown in the figure (in the figure the 79.3kg block(m2) is on a flat surface, the 10.9kg(m1) block is pinned against the

    asked by dave on November 9, 2011
  14. Physics

    Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 136 kg. Under the

    asked by jim on October 24, 2012
  15. Physics

    Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 136 kg. Under the

    asked by Kane on October 21, 2012
  16. physics

    A car P is moving with uniform speed of 5m/s towards a carriage of mass 9kg at rest kept on the rails at point B. the height of AC is 120m.cannon balls of 1kg are fired from the car with an initial velocity of 100m/s at an angle 30 degree with the

    asked by sreeram on January 16, 2011
  17. Chemistry

    I need to take some following samples of these: *a hydrocarbon w/a molecular mass greater than 100 g/mo *something w/ L-carvone or D-carvone in it *a non-electrolyte that dissloves in water *something w/a pressure greater than 2.o atom *a proton donor can

    asked by VaNeSsA on February 4, 2007
  18. physics

    1. When material decays, it emits a particle. An experiment similar to the J.J. Thomson experiment is performed to determine the charge-to-mass ratio of this particle. It is found that the particle moves undeflected through mutually perpendicular magnetic

    asked by sam on September 9, 2013
  19. Physics (help steve)

    A helium ion is at rest in a laboratory when it is put in an electric field of E=2 N/C. An infrared light, of wavelength 2000 nm, is directed towards the ion. The ion is moving towards the source of radiation. After what time in the laboratory frame in

    asked by Kay on July 9, 2013
  20. chemistry

    Water softeners often replace calcium ions in hard water with sodium ions. Since sodium compounds are soluble, the presence of sodium ions in water does not cause the white, scaly residues caused by calcium ions. However, calcium is more beneficial to

    asked by M on January 25, 2010
  21. Physics - ice to liquid

    Fifty grams of hot water at 80oC is poured into a cavity in a very large block of ice at 0oC. The final temperature of the water in the cavity is then 0oC. Show that the mass of ice that melts is 50 g. To melt ice to 50g of water, I think that it will

    asked by Ceres on September 24, 2009
  22. Complex Physics Problem

    A ladder can fall for two reasons. If it is set too steep and climber gets their mass to the left of the ladder's base, the ladder likely will fall over backwards. If the ladder is set at too shallow of an angle the required force of friction between the

    asked by Devin on June 29, 2013
  23. Physics

    1. A 5 kg weight is hung from a vertical spring. The spring stretches by 5 cm. How much mass should be hung from the spring so it will stretch by 10 cm from its original length? A. 15 kg B. 10 kg C. 20 kg D. 25 kg 2. What is the spring constant of a spring

    asked by Amber on March 4, 2019
  24. Chemistry

    1. The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrofluoric acid. F2(g) + NH3(g) „³ N2F4(g) + HF(g) a. If you have 66.5g NH3, how many grams of F2 are required for complete reaction? b. How many grams of NH3 are required

    asked by Sulon on March 26, 2011
  25. fizik

    Two shuffleboard disks of equal mass, one orange and the other yellow are involved in a perfectly elastic glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving initially to the right at 7.00 ms"1. After the

    asked by alya on April 11, 2011
  26. chemistry

    I think, by convention, most would consider the solvent as the major component and the others as solutes. Actually, however, it dosesn't matter. I just read that when one liquid is dissolved in another, the minor component is usually considered the solute

    asked by DrBob222 on February 28, 2007
  27. Physics

    Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. Hint: At three earth radii from the surface of the Earth, the gravity force (weight) of the spacecraft will be reduced to (1/4)^2 =

    asked by Scotty on January 7, 2007
  28. physics

    steam at 100 degree C is passed into a container of negligible heat capacity containing 20 g of ice and 100 g of water at 0 degree C, until the ice is completely melted. Determine the total mass of water in the container. ( specific latent

    asked by Anita Iwu on February 11, 2016
  29. physics

    A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is required to pull him 60m up a 30.7º slope (frictionless) at a constant speed of 3 m/s? answer in units of kJ. In this question, I

    asked by puff puff on September 17, 2006
  30. Social Studies

    “In 1860, after a tenement fire took 20 lives, New York City's building laws were extensively revised and strengthened. At that time, the position of "Superintendent of Buildings" was created within the Fire Department to enforce the new structural

    asked by rideon on April 6, 2017
  31. Physics

    A cannon is rigidly attached to a carriage,which can move along horizontal rails but is connected to a post by a large spring, initially unstretched, of force constant 60000 N/m. The cannon fires a 305 kg projectile at a velocity of 174 m/s directed

    asked by amanda and leah on January 29, 2012
  32. SAT Essay

    REFORMATTED Think carefully about the issue presented in the following excerpt and the assignment below. In many circumstances, optimism—the expectation that one's ideas and plans will always turn out for the best—is unwarranted. In these situations

    asked by Sahil on November 27, 2008
  33. physics

    A yo-yo has a rotational inertia of 860 g·cm2 and a mass of 150 g. Its axle radius is 3.4 mm, and its string is 90 cm long. The yo-yo rolls from rest down to the end of the string. (a) What is the magnitude of its linear acceleration? 1 cm/s2 (b) How long

    asked by Joey on January 5, 2011
  34. URGENT Physics PLEASE help

    5. A 1,600 kg car is moving south at 24 m/s. What is its momentum? (Points : 1) 66 kgm/s south 66 kgm/s north 38,000 kgm/s north 38,000 kgm/s south Question 6. 6. The velocity of a 150 kg cart changes from 6.0 m/s to 14.0 m/s. What is the magnitude of the

    asked by Anon on January 27, 2014
  35. Chemistry

    A 205 mg sample of a diprotic acid is dissolved in enough water to make 250.0 ml of solution. The pH of this solution is 2.15. A saturated solution of calcium hydroxide (Ksp= 1.3 x 10-6) is prepared by adding excess calcium hydroxide to water and then

    asked by Summer on February 25, 2013
  36. Chem HW!! Difficult! HELP!

    Urea (H2NCONH2) is used extensively as a nitrogen source in fertilizers. It is produced commercially from the reaction of ammonia and carbon dioxide. 2 NH3(g) + CO2(g) ---Heat pressure---> H2NCONH2(s) + H2O(g) Ammonia gas at 223°C and 90. atm flows into a

    asked by Jane on April 5, 2013
  37. Physics!!

    A cart loaded with bricks has a total mass of 25.2 kg and is pulled at constant speed by a rope. The rope is inclined at 21.6 ◦ above the horizontal and the cart moves 13.7 m on a horizontal floor. The coefficient of kinetic friction between ground and

    asked by Bob on May 8, 2012
  38. Physics - pls help

    A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a battery with electric potential V as shown in the figure. A magnetic field ~B is now imposed. The acceleration of gravity is 9.8

    asked by cr on April 14, 2011
  39. Introductory Chemistry

    Calcium chloride is 36.11% calcium by mass. How many grams of calcium are in 40.0 grams of calcium chloride

    asked by Lisa on October 15, 2014
  40. PHYSICS

    PARTS C AND D ARE WHAT I'M HAVING TROUBLE WITH. a tobaggan of mass 20kg is dragged horizontally across snow by someone who exerts a force of 45N. the tobaggan travels 8m under the action of the force and has a final speed of 2.6 m/s. a)calculate the actual

    asked by Sarah N H on January 30, 2010
  41. Physics

    A 2.5 kg block sits on an inclined plane with a 30 degree inclination. A light cord attached to the block passes up over a light frictionless pulley at the top of the plane and is tied to a second 2.5 kg mass freely hanging vertically. The coefficients of

    asked by Margaret on October 11, 2013
  42. physics

    A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k

    asked by Anonymous on October 14, 2013
  43. Physics

    A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k

    asked by Anonymous on October 14, 2013
  44. physics

    A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k

    asked by ss01 on October 15, 2013
  45. PHYSICS (HELP)

    A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k

    asked by Anonymous on October 14, 2013
  46. Geometry

    In what direction must a plane head if it can maintain 350 km/h in still air, wishes to fly 500km in a diirection 040degree and the wind is blowing at 56km/h from 100 degree? howlong would the journey take(to the nearest minutes)? how long would the return

    asked by Pauline on March 30, 2007
  47. chemistry - PLEASE HELP

    Spectroscopic studies have shown that the fusion reaction in the sun's core proceeds by a complicated mechanism. One proposed overall equation for the solar fusion reaction is 411H+2 0−1e→42He which is also accompanied by the release of "massless"

    asked by sarah on March 8, 2015
  48. physics

    A circular blade on a radial arm saw is turning at 257 rad/s at the instant the motor is turned off. In 17.0 s the speed of the blade is reduced to 90 rad/s. Assume the blade to be a uniform solid disk of radius 0.170 m and mass 0.400 kg. Find the net

    asked by Jeannine on June 4, 2007
  49. Physics

    Hockey puck A initially travels at  v(initial) = 6.2 m/s in the horizontal direction (East) on a smooth horizontal ice before striking hockey puck B which is initially at rest, off-center.  After the collision, A is deflected at θ =  23 degrees

    asked by AH on October 25, 2012
  50. Astronomy

    A cinder block can be weightless in space. Would you want to kick it with your bare foot? Even If it is weightless, does it have mass? An astronaut, circling the earth in the Space Shuttle, senses that his apparent weight is zero. He cannot feel the normal

    asked by Sunny on April 10, 2007
  51. Physics

    One ball has 7 times the mass and twice the speed of another. 1. How does the momentum of the more massive ball compare to the momentum of the less massive one? Find the ratio of the momenta. 2. How does the kinetic energy of the more massive ball compare

    asked by Mike on June 18, 2016
  52. Chemistry(Please help)

    What is the molar solubility of barium phosphate in a 0.282M barium acetate solution? If I set up and ice table I would have 0.282M - X = ? Would I use the molar mass of barium acetate to complete the equation to find X? Ba3(PO4)2 ==> 3Ba^2+ + 2PO4^3-

    asked by Hannah on April 28, 2012
  53. chemistry

    if 10.3 lithium sulfate react with an abundant amount of potassium phosphate, what mass of lithium phosphate can you expect to isolate? lithium sulfate to lithium phosphate : 10.03 x 3 li3PO4 x 115.79 Lipo4 / 109.94 liSo4 / 3 LiSo4 = 10.9016179159

    asked by Boberto on January 28, 2016
  54. physics

    While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each

    asked by Justin on July 26, 2013
  55. physics

    While taking a plane flight to a meeting, a physicist decides to do a mental calculation of how much fuel the plane would consume in the absence of friction, assuming its engines have an efficiency of 22.0% and the mass of the plane is 200,000 kg. Each

    asked by Justin on July 28, 2013
  56. Chemistry

    1. Ca(OH)2(aq) + H3PO4(aq) à Ca3(PO4)2(aq) + H2O(l) a. If you have 13.7mol of Ca(OH)2, how many grams of H2O are produced? b. How many grams of H3PO4 are required to produce 102.3g Ca3(PO4)2? c. How many moles of Ca(OH)2 are needed to produce 82.9g of

    asked by Sulon on March 26, 2011
  57. Physics 1111: Orbitals and Distance

    A planet has two satellite moons. Moon X has an orbital period of 2.27 days. Moon Y has an orbital period of about 3.40 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center.

    asked by Sar on March 8, 2010
  58. physics

    Boxing gloves are padded to lessen the force of a blow. (a) Calculate the force exerted by a boxing glove on an opponent's face, if the glove and face compress 7.00 cm during a blow in which the 8.00 kg arm and glove are brought to rest from an initial

    asked by Amelia on April 10, 2012
  59. new Q science

    Give an example of how you've seen the law of conservation of matter in action today. Since we don't know what "you've seen," it is impossible to answer this question. You need to review the law of conservation of matter in your textbook to compare your

    asked by Lisa on March 28, 2007
  60. physics

    A railroad car rolling along by itself is passing by a grain elevator, which is dumping grain into it at a constant rate. (a) Does momentum conservation imply that the railroad car should be slowing down as it passes the grain elevator? Assume that the

    asked by Sandhya on March 19, 2010
  61. physics

    You are a Middle Ages cannonball scientist attacking a castle a distance D away. Your job is to get a cannonball of mass m over the walls, which are a height H above the top of the cannonball launcher. At the instant when the cannonball leaves the launcher

    asked by Henry on January 26, 2014
  62. would someone please check this math

    1 four buttons have diameters of 5/8 , 3/4, 9/16, and 7/8 which buttons is smallest? answer 9/16 2. I spent 1/3 of my time doing math homework and 2/7 preparing for a history test . what fraction of study time remain? answer: 13/21 3. least common multiple

    asked by larry on February 8, 2007
  63. CIS/105

    Hello I need help with my upcoming finals project here is what I have to do: Use information and data obtained from at least four reliable Internet sources to produce a 12- to 15-slide PowerPoint® presentation about multimedia tools that aid classroom

    asked by Kala on February 13, 2014
  64. Earth Science (check answers)

    1. The mass number of an atom is obtained by totaling the number of_____and____. a. electrons and protons b. electron and neutrons c.protons and neutrons d.neutrons and isotopes Is it B? 2. Which of the following statements about the chemical combinations

    asked by Ember Lovet on August 8, 2017
  65. Thermodynamics

    Steam in a cylinder-piston arrangement expands from an initial condition of 5 bar, 80% dry to a final state of 2 bar, dry saturated steam. The initial volume of steam is 0.8 m3. The process of expansion can be represented by a straight line on the

    asked by Phy on October 17, 2014
  66. science

    Concentrated sulfuric acid (18.4 molar H2SO4) has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar, the solution has a density of 1.38 grams per milliliter and can be used as an electrolyte in lead storage batteries for

    asked by raksha on October 24, 2007
  67. chemistry

    Hi you guys please help me with my chemistry homework, i need to find all these items and take them to my class in a ziploc bag *a hydrocarbon with a molecular mass greater than 100g/mol *2 porpanol *an aromatic compound(not the common usage of "aromatic"

    asked by desperate on February 4, 2007
  68. Physics Please Answer

    A helium ion is at rest in a laboratory when it is put in an electric field of E=2 N/C. An infrared light, of wavelength 2000 nm, is directed towards the ion. The ion is moving towards the source of radiation. After what time in the laboratory frame in

    asked by Steve on July 13, 2013
  69. SCIENCE,PHYSICS

    A helium ion is at rest in a laboratory when it is put in an electric field of E=2 N/C. An infrared light, of wavelength 2000 nm, is directed towards the ion. The ion is moving towards the source of radiation. After what time in the laboratory frame in

    asked by GT on July 10, 2013
  70. help physics

    A helium ion is at rest in a laboratory when it is put in an electric field of E=2 N/C. An infrared light, of wavelength 2000 nm, is directed towards the ion. The ion is moving towards the source of radiation. After what time in the laboratory frame in

    asked by Steve on July 14, 2013
  71. Physics

    3.A car with a mass of 1500 kg is parked on a hill with an incline of 20°. a.What is the weight of the car? b.What is the normal force the car experiences? (hint: balance the forces parallel and perpendicular to the hill using Newton’s second law)

    asked by Hunter on June 20, 2011
  72. Physics

    I have no idea of how to solve this problem. Please help. lunch tray is being held in one hand, as the drawing illustrates. The mass of the tray itself is 0.200 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.00 kg

    asked by Jim on March 22, 2007
  73. Physics

    Superman rushes to save Lois Lane, who has fallen (has been pushed?) from a window 120 m above a crowded street. Superman swoops down in the nick of time, arriving when Lois is 2.0 m above the street and stopping her just at ground level. Lois has a mass

    asked by please please please on October 21, 2013
  74. phy

    (Q1)At what altitude above the earth's surface would the acceleration due to gravity be 4.9m/s-2?Assuming the mean radius of the earth is 64000000meters and the acceleration due to gravity 9.8m/s-2 on the surface of the earth

    asked by ikye on July 5, 2013
  75. chemistry

    Ammonium bisulfide, NH2HS, forms ammonia NH3, and hydrogen sulfide, H2S through the reaction: NH4HS (s) NH3(g) + H2S(g) Kp value of .120 at 25C in a 5L flask is charged with .300g of H2S at 25C. A) What are the partial pressures of NH3 and H2S at

    asked by maura on March 11, 2012
  76. CHEM

    A cylinder with a movable piston contains 2.00g of helium, He, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the

    asked by K on October 28, 2007
  77. chemistry

    530 mL solution 10% HCl has been spilt onto the bench. It cannot be diluted or washed away. How much of the granular NaOH from the container seen in a must be used to neutralise the acid? [Using NaOH: MM = 40 g/mol] 1. I have NaOH + HCl --> NaCl + H2O. 10%

    asked by Anonymous on October 2, 2014
  78. Chemistry

    Potassium superoxide, KO2, is used for producing oxygen and removing carbon dioxide in selfcontained breathing units, space shuttles, and other enclosed spaces. First the potassium superoxide reacts with moisture to release oxygen and produce potassium

    asked by Dean on October 10, 2017
  79. Science

    Hi, I am working on stoichiometry and limiting reactant problems. I have worked through examples in my book and I did them right and can solve for the excess, however there is one problem in the book that has confused me. I don't understand why they

    asked by Alexa on March 12, 2014
  80. Physics

    I did a lab about Standing waves on a string and it asked me the following qeuestions: Discuss any errors arising from the method used to establish the standing wave pattern. - I think air resistance, linear density of string is non uniform, tension of the

    asked by Anna on June 5, 2015
  81. Physics

    The ski slopes at Bluebird Mountain make use of tow ropes to transport snowboarders and skiers to the summit of the hill. One of the tow ropes is powered by a 22-kW motor which pulls skiers along an icy incline of 14° at a constant speed. Suppose that 18

    asked by Honey on April 4, 2013
  82. Physics

    A large kite of mass 3 kg is flying through the air on a windy day. Currently, the tension from the string on the kite has a magnitude of 7.7 N at an angle of θ = 33.5 degrees. The current acceleration of the kite has a magnitude of a = 7.56 m/s2 at an

    asked by Ashley on September 16, 2012
  83. chemistry

    write the equation for copper(II) sulfate pentahydrate and ammonium sulfate forming: Cu(NH4)2(SO4)2*6H2O not sure how to balance it Check your question very carefully. Is this a question given to you by a teacher? yeah it is in a lab CuSO4.5H2O + (NH4)2SO4

    asked by harry on November 6, 2006
  84. Chemistry

    I have a certain concentration of NaCl (in mg/L). I have to convert it to ppm Na+. I read some of the previous posts, and I understand that if I don't know the density, I should assume that 1ppm = 1mg/L. Does this also apply to ppm Na+ since there is 1 Na+

    asked by Maggie on February 20, 2007
  85. Physics

    Rubber Band A 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.8 rad/s on frictionless horizontal ice. It takes a force of 1.12 N to stretch the rubber band by 1 cm. (a) If the original length L of the rubber band is 1

    asked by Help on December 3, 2010
  86. AP Physics

    A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the right. The string pulling the spool is wrapped around it many times, and the other string is fastened to the center of the block.

    asked by Anonymous on March 15, 2017
  87. Physics

    A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the right. The string pulling the spool is wrapped around it many times, and the other string is fastened to the center of the block.

    asked by Anonymous on March 15, 2017
  88. Chemistry

    Hi everyone, I have been trying to figure out this titration equation all day and for some reason I am stumped. Here is the question in full: Potassium hydrogen phthalate, KHP, can be obtained in high purity and is used to determine the concentrations of

    asked by jo on November 29, 2012
  89. Physics

    A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k

    asked by asha on October 10, 2013
  90. Physics

    The Earth has an angular speed of 7.272·10-5 rad/s in its rotation. Find the new angular speed if an asteroid (m = 3.45·1022 kg) hits the Earth while traveling at a speed of 4.41·103 m/s (assume the asteroid is a point mass compared to the radius of the

    asked by Joe Frank on November 8, 2012
  91. physics

    A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.596 rev/s. A 59.4 kg person running tangential to the rim of the merry-go-round at 3.68 m/s jumps onto its rim and holds on. Before jumping on the

    asked by PHYChica on June 6, 2007
  92. physics

    An object with a mass of 3.4 kg is originally at rest on a horizontal, frictionless surface frictionless which is at the top of a frictionless incline with a length of 6 meters which is inclined at 28.9 degrees. Someone's hand applies a force to the object

    asked by Chelsea on October 31, 2012
  93. physics

    A .22 rifle bullet traveling at 360m/s strikes a block of wood, which penetrates to a depth of .110m. The mass of the bullet is 1.80g. Assume a constant retarding force.A) how much time is required for the bullet to stop? b) what force in newtons soes the

    asked by Chris on November 16, 2006
  94. Math

    How do I figure the ratio of one part liquid to eighteen parts water if I am using four gallons of water? Isn't the water liquid also? So all eighteen parts are liquid. 17 parts water= 17/18*4gal= 17/18*16quarts= ... 1 part solute= 1/18*16 quarts= 3.5 cups

    asked by Greg on July 21, 2007
  95. physics

    A large uniform block rests horizontally on two vertical supports(one support at the left end of the block and another at a distance from the other end) and has a weight hanging from its other end. The block has a mass of 100 kg and a length of 2 meters.

    asked by sandhya on October 16, 2010
  96. Business statistics

    1(a)Let Y have a binomial distribution with parameters n and p. We reject Ho: p=1/2 and accept H1: p>1/2 if Y>=c. Find n and c such that the probability of a Type I error is .10, and P(reject Ho/p=2/3)=.95. (b)What is the probability of a Type II error?

    asked by John on May 10, 2010
  97. College Physics

    A child plays on a bungee cord and oscillates with a certain frequency f. An adult with a mass that is 16 times greater than that of the child then uses the same bungee cord. What is the ratio of the frequency with the adult to the frequency with the

    asked by Anon on November 6, 2011
  98. physics

    A ladder can fall for two reasons. If it is set too steep and the climber gets their mass to the left of the ladder's base, the ladder likely will fall over backwards. If the ladder is set at too shallow of an angle the required force of friction between

    asked by joe on March 31, 2014
  99. Physics

    An object m is released from the top of an inclined, frictionless plane that is inclined at angle theta with the horizontal. The top of the ramp has height h. Which of the following would change the acceleration of the object if it were released from the

    asked by Bob Loblaw on October 30, 2012
  100. PHYSICS

    An astronaut of mass 78.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.500 m/s. With the

    asked by EDDY on November 2, 2011

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100
  101. 101
  102. 102
  103. 103
  104. 104
  105. 105
  106. 106
  107. 107
  108. 108
  109. 109
  110. 110
  111. 111
  112. 112
  113. 113
  114. 114
  115. 115
  116. 116
  117. 117
  118. 118
  119. 119
  120. 120
  121. 121
  122. 122
  123. 123
  124. 124
  125. 125
  126. 126
  127. 127
  128. 128
  129. 129
  130. 130
  131. 131
  132. 132
  133. 133
  134. 134
  135. 135
  136. 136
  137. 137
  138. 138
  139. 139
  140. 140
  141. 141
  142. 142
  143. 143
  144. 144
  145. 145
  146. 146
  147. 147
  148. 148
  149. 149
  150. 150
  151. 151
  152. 152
  153. 153
  154. 154
  155. 155
  156. 156
  157. 157
  158. 158
  159. 159
  160. 160
  161. 161
  162. 162
  163. 163
  164. 164
  165. 165
  166. 166
  167. 167
  168. 168
  169. 169
  170. 170
  171. 171
  172. 172
  173. 173
  174. 174
  175. 175
  176. 176
  177. 177
  178. 178
  179. 179
  180. 180
  181. 181
  182. 182
  183. 183
  184. 184
  185. 185
  186. 186
  187. 187
  188. 188
  189. 189
  190. 190
  191. 191
  192. 192
  193. 193
  194. 194
  195. 195
  196. 196
  197. 197
  198. 198
  199. 199
  200. 200
  201. 201
  202. 202
  203. 203
  204. 204
  205. 205
  206. 206
  207. 207
  208. 208
  209. 209
  210. 210
  211. 211
  212. 212
  213. 213
  214. 214
  215. 215
  216. 216
  217. 217
  218. 218
  219. 219
  220. 220
  221. 221
  222. 222
  223. 223
  224. 224
  225. 225
  226. 226
  227. 227
  228. 228
  229. 229
  230. 230
  231. 231
  232. 232
  233. 233
  234. 234
  235. 235
  236. 236
  237. 237
  238. 238
  239. 239
  240. 240
  241. 241
  242. 242
  243. 243
  244. 244
  245. 245
  246. 246
  247. 247
  248. 248
  249. 249
  250. 250
  251. 251
  252. 252
  253. 253
  254. 254
  255. 255
  256. 256
  257. 257
  258. 258
  259. 259
  260. 260
  261. 261
  262. 262
  263. 263
  264. 264
  265. 265
  266. 266
  267. 267
  268. 268
  269. 269
  270. 270
  271. 271
  272. 272
  273. 273
  274. 274
  275. 275
  276. 276
  277. 277
  278. 278
  279. 279
  280. 280
  281. 281
  282. 282
  283. 283
  284. 284
  285. 285
  286. 286
  287. 287
  288. 288
  289. 289
  290. 290
  291. 291
  292. 292
  293. 293
  294. 294
  295. 295
  296. 296
  297. 297
  298. 298
  299. 299
  300. 300
  301. 301
  302. 302
  303. 303
  304. 304
  305. 305
  306. 306
  307. 307
  308. 308
  309. 309
  310. 310
  311. 311
  312. 312
  313. 313
  314. 314
  315. 315
  316. 316
  317. 317
  318. 318
  319. 319
  320. 320
  321. 321
  322. 322
  323. 323
  324. 324
  325. 325
  326. 326
  327. 327
  328. 328
  329. 329
  330. 330
  331. 331
  332. 332
  333. 333
  334. 334
  335. 335
  336. 336
  337. 337
  338. 338
  339. 339
  340. 340
  341. 341
  342. 342
  343. 343
  344. 344
  345. 345
  346. 346
  347. 347
  348. 348
  349. 349
  350. 350
  351. 351
  352. 352
  353. 353
  354. 354
  355. 355
  356. 356
  357. 357
  358. 358
  359. 359
  360. 360
  361. 361
  362. 362
  363. 363
  364. 364
  365. 365
  366. 366
  367. 367
  368. 368
  369. 369
  370. 370
  371. 371
  372. 372
  373. 373
  374. 374
  375. 375
  376. 376
  377. 377
  378. 378
  379. 379
  380. 380
  381. 381
  382. 382
  383. 383
  384. 384
  385. 385
  386. 386
  387. 387
  388. 388
  389. 389
  390. 390
  391. 391
  392. 392
  393. 393
  394. 394
  395. 395
  396. 396
  397. 397
  398. 398
  399. 399
  400. 400
  401. 401
  402. 402
  403. 403
  404. 404
  405. 405
  406. 406
  407. 407
  408. 408
  409. 409
  410. 410
  411. 411
  412. 412
  413. 413
  414. 414
  415. 415
  416. 416
  417. 417
  418. 418
  419. 419
  420. 420
  421. 421
  422. 422
  423. 423
  424. 424
  425. 425
  426. 426
  427. 427
  428. 428
  429. 429
  430. 430
  431. 431
  432. 432
  433. 433
  434. 434
  435. 435
  436. 436
  437. 437
  438. 438
  439. 439
  440. 440
  441. 441
  442. 442
  443. 443
  444. 444
  445. 445
  446. 446
  447. 447
  448. 448
  449. 449
  450. 450
  451. 451
  452. 452
  453. 453
  454. 454
  455. 455
  456. 456
  457. 457
  458. 458
  459. 459
  460. 460
  461. 461