1. dog behavior

    Please check my answer thanks Which of the following conditions is an example of an intervening variable ? A painful stimulation applied just after the independent variable B. A loud noise causing a startle reponse C. Deperiving a subject of water 12 hours

    asked by Anonymous on April 17, 2008
  2. Physics

    Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 402 N and F2 = 364 N. (Assume up and to the right as positive directions.)(F1 is 10degrees and F2 is 30degrees) (a) What is the resultant of these two

    asked by Dani on May 3, 2011
  3. differential equations

    Search: A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine

    asked by mike on April 18, 2011
  4. elem alg

    On a certain test, the student gets 3 points for each correct answer and loses 2 points for each incorrect answer. The test has 37 questions total. (no question can be lfet blank.) If x is the number of answers a students gets correct, write and express

    asked by Vera on March 10, 2011
  5. Physics

    So if I have a rocket going to a certain height - I know its mass, and I know its total impulse, and the height it reaches -how do I calculate for another height? For example, 50Ns is total impulse, mass is 550g, and height is 750m. How do I calculate the

    asked by Enrique on October 15, 2015
  6. Math

    So if I have a rocket going to a certain height - I know its mass, and I know its total impulse, and the height it reaches -how do I calculate for another height? For example, 50Ns is total impulse, mass is 550g, and height is 750m. How do I calculate the

    asked by Enrique on October 15, 2015
  7. economics

    When using 400 printers and 200 printing presses to produce books. A printer's wage rate is 20, and the price of printing press is 5,000. The last printer added 20 books to total, while the last press aded 1,000 books to total output. Is this an optimal

    asked by Sharon on February 22, 2010
  8. Pre algebra

    My problem says The cost of a cell phone for one month is a linear function of the numbers of minutes used. The total cost for 20, 35, and 40 additional numbers Re shown. Then it gives a table where it's 20/48$, 35/54$ and 40/56$ The first question is ,

    asked by Alyssa on November 24, 2014
  9. Economics

    The total operating revenues of a public transportation authority are $100M while its total operatiing costs are $120M. The price per ride is $1, and the price elasticity of demand for transportation ia -0.4. The transportation authority has to eliminate

    asked by Stephanie on December 10, 2012
  10. Physics

    A helicopter of mass M and weight ,W,rises with vertical acceleration, a, due to the upward thrust ,u, generated by its rotor.The crew and passengers of total mass ,m, and total weight,w, exert a combined force R on the floor of the helicopter.Write an

    asked by Jaden K Hove on April 18, 2013
  11. Physics

    Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.4 × 10^3 kg/m3. What mass of sand grains would have a total surface area (the total area of all the

    asked by Robin on January 30, 2014
  12. Reactor Physics

    There is an infinite non-multiplying medium with diffusion length 3 cm and diffusion coefficient 1 cm. There are 3 point sources of neutrons on the x-y plane: „h Source S1 = 108 s-1 at (x, y) = (2 cm, 0) „h Source S2 = 2*108 s-1 at (x, y) = (0, 2 cm)

    asked by Daniel on November 3, 2014
  13. math HELP!

    Kara's custom tees experienced fixed costs of $300 and variable costs of $5 a shirt. write and equation that can be used to determine the total expenses encountered by kara's custom tee's. Let x be the number of shirts and let C(x) be the total cost of

    asked by max on January 27, 2013
  14. algebra

    Dilbert invests a total of $14,000 in two accounts paying 9% and 15% simple interest, respectively. How much was invested in each account if, after one year, the total interest was $1,350.00. A) Enter an equation that uses the information as it is given

    asked by Tina on October 26, 2015
  15. Math (Grade 9)

    A submarine travels 16km/h on the surface of the water and 10km/h under water. The sub covers 138km in 12 hours. I) Write 2 equations to represent; (Define Variables) total number of hours: Total distance travelled. II) Use equations to calculate the spent

    asked by Nick on June 3, 2015
  16. Physics

    A loaded elevator with very worn cables has a total mass of 3000 kg, and the cables can withstand a maximum total tension of 40,000 N. (a) What is the maximum upward acceleration for the elevator if the cables are not to break? (b) What must the tension be

    asked by Vv on November 18, 2006
  17. psy

    15. Bowl More Lanes ran out of bowling lanes last Saturday and provided lanes for a league competition that night. Since there will not be a league competition at Bowl More on Monday, the bowling alley won’t run out of lanes on Monday. Which one of the

    asked by Cat on September 25, 2010
  18. Science

    A patient complains of constantly desiring food and water, then having to urinate frequently. Tests show normal ADH levels. These symptoms suggest A. diabetes insipidus. C. diabetes mellitus. B. Cushing’s syndrome. D. panhypopituitarism. C

    asked by Tyra on April 23, 2009
  19. statstics

    construct a 90 confidence interval for the population mean ÃŽ¼. assume the population has a normal distribution. A sample if 15 randomly selected math majors has a grade point average of 2.86 with a standard deviation od 0.78. Round to the nearest

    asked by Anonymous on April 14, 2013
  20. physics

    A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. Find the temperature increase caused in the 8.00 kg of affected tissue if all the energy heats up the tissue with a specific heat capacity

    asked by carolyn on November 8, 2015
  21. science

    1. Descriptive statistics are widely used in qualitative research. When establishing if a population is normally distributed explain when the statistics of sample size, mean, mode, median, skewness and kurtosis will guide the researcher to make conclusions

    asked by jonathan on May 30, 2015
  22. physics

    What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45o to the normal? The refractive index of water is 1.333. Choose one answer. a. 32.04o b. 45.00o c. 59.99o d. 33.76o

    asked by ashley -- on April 30, 2011
  23. physics

    A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. Find the temperature increase caused in the 8.00 kg of affected tissue if all the energy heats up the tissue with a specific heat capacity

    asked by carolyn on November 7, 2015
  24. statistics for health research

    Descriptive statistics are widely used in qualitative research. When establishing if a population is normally distributed explain when the statistics of sample size, mean, mode, median, skewness and kurtosis will guide the researcher to make conclusions of

    asked by maureen on June 16, 2014
  25. Research &Evaluation

    Need help on the following question...Please How many ways can an IRS auditor select 6 if 12 tax returns for an audit Use a table of areas to find the specified area under the standard normal curve. The area that lies to the left of 1.13 (a)0.8485 (b)

    asked by Denim on September 7, 2008
  26. algebra

    2/5 of the total questions on a test have the answer Choice of C. If 50 questions have the answer C, how many total questions are there? I've tried 20/50 2/5 times 50/1

    asked by Mj on August 26, 2014
  27. Algebra

    A cash register contains $5 bills and $10 bills with a total value of $350. If there are 46 bills total, then how many of each does the register contain? answer is 22

    asked by liliy on June 23, 2016
  28. Math

    Day Number of Players Amount Collected Monday: 4 $ 88 Tuesday: 7 $154 Wednesday: 6 $132 Thursday: 3 $ 66 Friday: 2 ???? A.On Friday, the coach will collect fees from 2 more players. What is the total amount of money the coach will collect from the 2

    asked by Frances on May 7, 2011
  29. Math

    The current, I, in amperes, for an electric circuit is given by the formula I=4.3sin120(pi)t, where t is time, in seconds. a)At what time is the current at its max volume? How does your understanding of co terminal angles help in your solution? b)What time

    asked by Bethany on November 13, 2015
  30. Chemistry

    FeS2 (s) + O2(g) -----> SO2(g) +Fe203(s) (unbalanced) a production error leads to the sulfide being placed in a 950-L vessel with insufficient oxygen. Initially, the partial pressure of O2 is 0.64 atm, and the total pressure is 1.05 atm, with the balance

    asked by tori on October 13, 2011
  31. ALGEBRA

    I need help with two problems to finish my assignment. #1 The length of a rectangle is fixed at 29cm. What widths will make the perimeter greater than 86 cm? If I could get the equation for this I would be able to figure it. I saw this one posted and no

    asked by mona on May 3, 2009
  32. statistics

    I have got all the other parts but not sure how to come up with this part????In a national survey of 500 business and 500 leisure travelers, each was asked where they would most like "more space."

    asked by Sue on May 26, 2013
  33. Physics

    Specify the state of each qubit after we applied the circuit. First qubit: Second qubit:

    asked by unknown on February 24, 2013
  34. art

    i need help with my art test.how is applied art different from fine art?

    asked by Anonymous on September 22, 2008
  35. algebra

    Of 375 musicians at a high school, some play only in the jazz band, some play only for the marching band, and some do both. If 250 of them play in the jazz band, and 130 play in both, how many of the musicians are in the marching band? a)110 b)100 c)135 d)

    asked by Adon on October 30, 2014
  36. physics

    A 180 kg block is pulled at a constant speed of 8.3 m/s across a horizontal floor by an applied force of 135 N directed 15° above the horizontal. What is the rate at which the force does work on the block?

    asked by ghias on October 28, 2010
  37. Stats

    In designing an experiment involving a treatments applied to 5 test subjects, researchers plan to use a simple random sample of 5 subjects from 28. How many different simple random samples are possible?

    asked by Macy on October 13, 2014
  38. science

    a hydrauli press has a ram of 30 cm diameter and plunger of 4.5cm diameter. find the the weight lifted by the hydraulic press when the force applied at the plunger is 500N

    asked by sam on August 22, 2017
  39. physics

    the small piston of a hydraulic press has an area of 7.0 cm squared. if the applied force is 30.0 N, find the area of the large piston to exert a pressing force of 4000 N

    asked by maria on October 23, 2011
  40. physics

    What is the minimum amount of force required to move a 4000 pound truck that is resting on level ground? If 15000 N of force is applied can you move the truck? Ms=.56 Mk=.31

    asked by Cody on December 5, 2011
  41. Physics

    To move a large crate across a rough floor, you push on it with a force at an angle of 21 below the horizontal, as shown in the figure. Find the acceleration of the crate if the applied force is 400 , the mass of the crate is 32 and the coefficient of

    asked by Randy on March 6, 2011
  42. AP Chemistry

    An unknown metal M forms a soluble compound, M(NO3)2. A solution of M(NO3)2 is electrolyzed. When a constant current of 2.5 amperes is applied for 35 minutes, 3.06 grams of the metal M is deposited. Calculate the molar mass of M and identify the metal.

    asked by Summer on April 8, 2013
  43. physics

    A 0.540-kg ball is dropped from rest at a point 2.30 m above the floor. The ball rebounds straight upward to a height of 1.10 m. Taking the negative direction to be downward, what is the impulse of the net force applied to the ball during the collision

    asked by Tyler on January 19, 2017
  44. Chemistry

    How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? How is the term acid anhydride applied here? I know you had answered this already, but what if KHP is used to titrate the NaOH. In this

    asked by Sandy on March 29, 2014
  45. calculus urgent help please!

    company operates two plants which manufacture the same item and whose total cost functions are C_1=9.5+0.04q_1^(2)and C_2=3.4+0.06q_2^(2), where q_1 and q_2 are the quantities produced by each plant. The total quantity demanded, q=q_1+q_2 , is related to

    asked by lalala on January 18, 2012
  46. Physics

    A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.1 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 1.0 s, determine each of the following. 12.6 m/s at

    asked by Angelica on August 27, 2012
  47. Physics

    A 25 kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N acts on the mass. The mass is initially at rest. What speed does that mass have after being moved 2.0m?

    asked by Maia on October 16, 2010
  48. physics

    A(n) 2165.7 kg car is coasting along a level road at 35.5 m/s. A constant braking force is applied, such that the car is stopped in a distance of 52.7 m. What is the magnitude of the braking force? Answer in units of N.

    asked by Saykar on November 22, 2015
  49. physics

    A(n) 1949.1 kg car is coasting along a level road at 22.9 m/s. A constant braking force is applied, such that the car is stopped in a distance of 74.6 m. What is the magnitude of the braking force? Answer in units of N

    asked by mb, hnb on November 23, 2014
  50. Physics

    A 25 kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N acts on the mass. The mass is initially at rest. What speed does that mass have after being moved 2.0m?

    asked by Tia on October 17, 2010
  51. Human Geography

    I'm doing a research essay that has to prove how the Malthus theory can be applied to the modern world. I need around 5 countries as examples. They can include contradictions and examples of the theory. What are some countries? I can't use India or China,

    asked by Jane on October 12, 2009
  52. physics

    A(n) 1949.1 kg car is coasting along a level road at 22.9 m/s. A constant braking force is applied, such that the car is stopped in a distance of 74.6 m. What is the magnitude of the braking force? Answer in units of N

    asked by Anonymous on November 23, 2014
  53. Physics

    Am i correct? My work 0.10/0.20= .5 = 1/2 or is it the other way around? .20/.10? Suppose a magnetic field of 0.20 T is applied to the area within a circular loop of wire. The strength of the field is then changed to 0.10 T. By what factor is the magnetic

    asked by Me and I on June 10, 2014
  54. physics

    A(n) 2153 kg car is coasting along a level road at 34.4 m/s. A constant braking force is applied, such that the car is stopped in a distance of 61.8 m. What is the magnitude of the braking force? Answer in units of N

    asked by colton on November 9, 2015
  55. rotations

    If the coefficient of static friction between tires and pavement is 0.7, calculate the minimum torque that must be applied to the 63-cm-diameter tire of a 925-kg automobile in order to "lay rubber" (make the sheels spin, slipping as the car accelerates).

    asked by Anonymous on March 10, 2010
  56. Physics

    Could someone try to help me solve those 3 questions by giving me clues or equations? With what speed (SI Units) must a ball be thrown directly upward so that it remains in the air for 12.5 second? An object of mass 197kg is at rest. If a force of 2.5N is

    asked by cool on January 27, 2010
  57. Programming

    Widget company runs a small factory that makes several types of nuts and bolts. They employ (a)1 (b)2 (c)3. Each factory worker can work a maximum of (a)40 hours normal working hours per week. All hours over 40 are paid as over-time with a maximum

    asked by Jessica on April 28, 2017
  58. Physics

    It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 8 g bullets at the rate of 110 bullets/min, the speed of each bullet being 550 m/s. Suppose too that the

    asked by Evan on December 5, 2012
  59. physical sciences

    The mass of a minibus is 1500kg,assume that the passenger have an average mass of 50kg each.The driver is moving at a speed of 30m/s when he notice that the traffic light ahead have turned to red.he applied a force of 9000N on the break pedal,calculate

    asked by ascentia on February 21, 2016
  60. chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. H-O-H and C-O-H bond angles are all equal to 109.5. B. Dispersion forces affect all three molecules. C. Two lone pairs of electrons are assigned to the oxygen

    asked by Anonymous on February 9, 2008
  61. chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Water has the highest boiling point. B. Two lone pairs of electrons are assigned to the oxygen in each Lewis structure of all three molecules. C. Dispersion

    asked by jose on February 4, 2008
  62. Chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Two lone pairs of electrons are assigned to the oxygen in each Lewis structure of all three molecules. B. H-O-H and C-O-H bond angles are all equal to 1095. C.

    asked by Tom on May 3, 2008
  63. chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. H-O-H and C-O-H bond angles are all equal to 1095. B. Two lone pairs of electrons are assigned to the oxygen in each Lewis structure of all three molecules. C.

    asked by Kyle on February 3, 2009
  64. chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Two lone pairs of electrons are assigned to the oxygen in each Lewis structure of all three molecules. B. Dispersion forces affect all three molecules. C. H-O-H

    asked by Anonymous on February 10, 2008
  65. Physics

    A - A hummingbird flies 2.7 m along a straight path at a height of 5.3 m above the ground. Upon spotting a flower below, the hummingbird drops directly downward 1.8 m to hover in front of the flower. a) What is the magnitude of the hummingbird’s total

    asked by Anna on October 17, 2017
  66. Chemistry Titration-emergency :(

    [HCl]=0.1213M Avg Amount HCl added: 14.15mL Volume of Saturated Solution of Ca(OH)2 in NaOH used: 25 mL and its concentration was 0.05349 M. 1.)Calculate the total [OH ] in the saturated solution of Ca(OH)2 in sodium hydroxide -> for this do I only find

    asked by DrBobPleaseHelp on March 18, 2017
  67. Physics

    Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.4 × 103 kg/m3. What mass of sand grains would have a total surface area (the total area of all the

    asked by Catherine on February 2, 2014
  68. PHYSICS

    Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.4 × 103 kg/m3. What mass of sand grains would have a total surface area (the total area of all the

    asked by SARA on February 1, 2013
  69. macroeconimics

    A bank has $120 million in total assets, which are composed of reserves, loans, and securities. It’s only liabilities are $120 million in transactions deposits. The bank exactly satisfies its reserve requirement and its total reserves equal $6 million.

    asked by Anonymous on July 25, 2011
  70. Math

    A theater has tickets for $6 for adults, $3.50 for students, and $2.50 for pre-school children. A total of 238 tickets were sold for one showing with a total revenue of $1142. If the number of adult tickets sold was 10 more than twice the number of student

    asked by Tay on April 30, 2017
  71. algebra

    Contributions to the annual Grayson School fund raising campaign were 10% greater in 2004 that they were in 2003. In 2003, contributions were 15% greater than they were in 2002. If contributions for 2004 total $8855, what was the total in 2002? (remember

    asked by Anonymous on March 1, 2018
  72. Algebra

    Contributions to the annual Grayson School fund raising campaign were 10% greater in 2004 that they were in 2003. In 2003, contributions were 15% greater than they were in 2002. If contributions for 2004 total $8855, what was the total in 2002? (remember

    asked by samay on February 23, 2018
  73. chemistry

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 30.0C , the total pressure is 980 mm Hg. The vapor pressure of ethanol

    asked by mitchell on February 4, 2008
  74. Physics

    I'm totally confused and this is due Monday- We're dealing with electrical circuits and I have to construct a circuit with resistors of 10 Ohms, 20 Ohms, 30 Ohms and 20 Ohms. The total resistance has to be 42 Ohms-Can someone direct me how to even begin to

    asked by Aubrey on March 26, 2011
  75. Physics

    A crowbar is used to wrench open a wooden crate. The crowbar is situated so that a point 8 cm from the end digging into the box acts as a pivot point. The crobar is gripped on the other side, 29 cm away from the pivot. If the person exerts a force of 110

    asked by Sara on April 29, 2011
  76. Physics

    A crowbar is used to wrench open a wooden crate. The crowbar is situated so that a point 8 cm from the end digging into the box acts as a pivot point. The crobar is gripped on the other side, 29 cm away from the pivot. If the person exerts a force of 110

    asked by Anonymous on April 27, 2011
  77. Physics Class

    A crowbar is used to wrench open a wooden crate. The crowbar is situated so that a point 8 cm from the end digging into the box acts as a pivot point. The crobar is gripped on the other side, 29 cm away from the pivot. If the person exerts a force of 110

    asked by Paige on April 28, 2011
  78. math

    Reading readiness of preschoolers from an impoverished neighborhood (n=20) was measured using a standardized test. Nationally, the mean on this test for preschoolers is 30.9 with SD=2.08. A) Children below the 30th percentile (in the bottom 30%) are in

    asked by Sasha on April 12, 2012
  79. Economics

    A firm is currently producing in the elastic portion of its demand curve. What course of action do you recommend for it assuming it wants to raise revenue? Continue producing at the current output level, because it maximizes its total revenue by producing

    asked by Ami on November 19, 2011
  80. physics

    A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (b)

    asked by jim on November 9, 2011
  81. engineering

    Using mechanics of materials principles, (i.e. equations of mechanical equilibrium applied to a free-body diagram), derive the following equations: s’ = s cos2q = s[(1+ cos 2q) / 2] t' = s sinq cosq = s [sin 2q / 2] s=sigma, q=theta, t=tau I have looked

    asked by Bob on October 18, 2010
  82. English

    Can you please check these sentences for me? Thank you very much. 1) Robotiv planes and search robots can be used in rescue situations such as after natural disasters. 2)Tney can be built and launched in 15 minutes. They are equipped with cameras and

    asked by English on December 22, 2010
  83. physics laws of motion

    a block of mass 300kg is set into motion on a frictionless horizantal surface with help of frictionless pulley and a rope system.what horizantal force F should be applied to produce an acceleration of 1m/s in block

    asked by shail on October 17, 2014
  84. Physics

    A roller of mass 300kg and radius 50 cm lying on horizontal floor is resting against step of height 20 cm. the minimum horizontal force to be applied on the roller on the step is Ans:3920N

    asked by Thousif on November 1, 2017
  85. physics

    The information on a one-gallon paint can is that the coverage, when properly applied, is 450 ft sq. One gallon is 231 cubic inches. What is the avg. thickness of the paint in such an application? Please explain how to do this. The answer should be in

    asked by gg on September 15, 2008
  86. Physics

    A sled is pulled across a horizontal snow surface with a constant velocity. The force being applied is 80 N at an angle of 53 degrees to the ground. What is the magnitude of the force of friction of the snow acting on the sled?

    asked by PH on November 19, 2012
  87. physics

    A catcher's mitt recoils a distance of 0.177 m in bringing a 0.176 kg baseball to a stop. If the applied force is 504 N, then what was the speed of the baseball at the moment of contact with the catcher's mitt?

    asked by alli on November 25, 2018
  88. Physics

    Two forces are applied simultaneously to a crate sliding in a horizontal plane: 36.8 N to the right and 20.2 N to the left. What is the net force on the crate? Let a force to the right be positive and to the left negative. Give your answer in Newtons.

    asked by Mo on November 11, 2014
  89. physics

    A horizontal force of magnitude 33.5 N pushes a block of mass 3.80 kg a distance of 3.00 m across a floor, where the coefficient of kinetic friction is 0.600. (a) How much work is done by that applied force on the block-floor system?

    asked by t.a. on December 18, 2011
  90. Physics

    A wooden block of weight 24N lies on a horizontal table,when a force of 12N was applied to the block,it takes the block to "just slide "what is the coefficient of static friction between the block and the table

    asked by Daniel on March 11, 2019
  91. science

    A force of 625 N is applied to a hydraulic jack piston that is 0.04 m in diameter. If the piston which supports the load has a diameter of 0.60 m, how much mass can be lifted by the jack? Ignore any difference in height between the pistons

    asked by teri on January 17, 2010
  92. Physics

    Figure 6-24 shows an initially stationary block of mass m on a floor. A force of magnitude 0.540mg is then applied at upward angle 16 degrees. What is the magnitude of the acceleration of the block across the floor if (a)Us=.6 and Uk=.5 and (b) Us=.4 and

    asked by Stan on March 3, 2010
  93. physics

    Three co-linear forces f1=45 N west,f2=63 N east and an unknown force f3 are applied to an object.the resultant of the three forces is 12 N west determine the magnitude and direction of the force f3 using algebraic calculations. Thank you indvance.

    asked by melissa on June 3, 2015
  94. PreAP Physics

    A force of 600N is applied to a metal box to pull it 15 m across a floor. The roped used to pull the box is held at an angle of 46 degrees with the floor. How much work is done? My answer is w= 6251.93J

    asked by Mandy on November 23, 2011
  95. Physics

    A force of 1500 N (pull) is applied to a 200-kg crate at an angle of 20 degrees above horizontal. The coefficient of static friction is .65 and the coefficient of kinetic friction is .43. Does the crate move? If so, what is its acceleration?

    asked by Anonymous on December 13, 2016
  96. Physics

    An iron disk has a radius of 0.625 m and a mass of 217 kg. The disk is mounted on its axis so that it is free to spin. How much force is required if the force is applied at a distance 19.5 cm from the axis of rotation?

    asked by Ann on November 21, 2014
  97. college physics

    Two blocks with masses m and M are pushed along a horizontal frictionless furface by a horizontal applied force. The magnitude of the force either of these blocks has on the other is: M being a bigger mass than m of course. I think the answer is: mF/(M-m)

    asked by Ryan on December 17, 2009
  98. PHYSICS!

    A horizontal force of 10 N is applied to the outer edge of a door at an angle of 32° to the door, as shown in a view from the top looking down. The width of the door is 0.80 m. The magnitude of the torque of this force on the door with respect to the

    asked by Spencer on June 9, 2012
  99. Physics

    George pushes a wheelbarrow for a distance of 12 meters at a constant speed for 35 seconds by applying a force of 20 newtons. What is the power applied to push this wheelbarrow? A. 1.2 watts B. 3.4 watts C. 6.9 watts D. 13 watts

    asked by fredrick on March 19, 2013
  100. Physics

    A 50.0-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 20.7° below the horizontal is applied to the box. The coefficient of kinetic friction between the box and the surface is 0.300. What is the acceleration of the box?

    asked by Joe on March 19, 2013