1. Earth Space (In desperate need)

    My teacher didn't have time to finish the lesson day, and I can't find the answers anywhere online or in my book. What are 2 main ways in which the earth moves? What does each movement cause? I have it rotates on its axis which causes seasons, but I cant

    asked by Bryce on August 15, 2013
  2. chemistry

    Explain each of the following observations in terms of the electronic strucutre and/ or bonding of the compunds involved. (a)At ordinary conditions, HF( normal boiling point=20C) is a liquid, whereas HCl(normal boiling point=-114C) is a gas. (b)Molecules

    asked by anonymous on January 29, 2008
  3. Physics

    This has been posted before but I need someone to elaborate please. A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes

    asked by Pandy on September 30, 2010
  4. Math

    1. Use formulas to find the lateral area and surface area of the given prism. Round your nearest answer to the nearest whole number. use the large 19x6 m rectangles on the top and bottom as the bases. Left corner is 2m, bottom length is 19m, and right face

    asked by Tim on May 17, 2016
  5. CHEMISTRY

    Which statement about structure and bonding is INCORRECT? a. ) The bond length is the internuclear distance. b. ) The covalent bond is a region of high electron charge density between two atoms. c. ) Hybrid orbitals are combination of atomic orbitals. d. )

    asked by David on July 3, 2009
  6. Algebra 2

    On some tubes of caulking, the diameter of the circular nozzle opening can be adjusted to produce lines of varying thickness. The table shows the length (L) of caulking obtained from a tube when the nozzle opening has diameter (d) and cross-sectional area

    asked by Jenna on March 3, 2012
  7. Precalculus

    An observer 2 km from the launching pad observes a vertically ascending missile at an angle of elevation of 21 degrees. 5 seconds later the nagle has increased to 35 degrees. What was its average speed during this interval? If it keeps going vertically at

    asked by Harchit on December 1, 2010
  8. physics

    A solid, uniform disk of radius 0.250 m and mass 60.4 kg rolls down a ramp of length 4.60 m that makes an angle of 18.0° with the horizontal. The disk starts from rest from the top of the ramp. (a) Find the speed of the disk's center of mass when it

    asked by mathew on March 8, 2015
  9. chemistry

    The formulas for ethane, ethene and ethyne are C2H6, C2H4, and C2H2 respectively. Rank this chemicals 1,2,3 (highest)in terms of strength of IMF and explain the structures of the three molecules. I rank these three based on the bond length so I got C2H2,

    asked by Lea on October 5, 2012
  10. Math-- Check My Answers Please

    Bonnie has a rectangular photographic print that is 5 inches wide and 7 inches long. If she multiplies both the length and width by 1.5, how will the perimeter of the print increase? a.) It will be 1.5 times the original size. b.) It will be 1.75 times the

    asked by Jessica on February 19, 2014
  11. Algebra 2

    The period of a pendulum is the time the pendulum takes to swing back and forth. The function L=0.81t^2 relates the length L in feet of a pendulum to the time t in seconds that it takes to swing back and forth. A convention center has a pendulum that is 80

    asked by Olivia N J on November 29, 2016
  12. math

    you have 120 pieces of fabric to make a blanket. each piece of fabric is a square with a side length of 6 inches. you use as many pieces of fabric as possible to screat a square blanket. What is the area of the blanket? How many pieces of fabric are left

    asked by teresa on September 25, 2017
  13. Physics

    A 5.80 kg ball is dropped from a height of 14.5 m above one end of a uniform bar that pivots at its center. The bar has mass 9.00 kg and is 6.40 m in length. At the other end of the bar sits another 5.30 kg ball, unattached to the bar. The dropped ball

    asked by Joe on April 5, 2012
  14. PHYSICS (please help)

    A solid, uniform disk of radius 0.250 m and mass 51.1 kg rolls down a ramp of length 4.60 m that makes an angle of 18° with the horizontal. The disk starts from rest from the top of the ramp. a)Find the speed of the disk's center of mass when it reaches

    asked by Sandy on October 31, 2012
  15. math

    Surface area of a composite object. A cone with a slant height of 8.9cm and a radius of 4cm. The cones base is attached on top of a rectangular prism whose length is 41cm, width is 20cm and height is 40cm. It is attached with a hemisphere whose radius is

    asked by Maryam on October 27, 2016
  16. physics

    A runner is jogging at a steady 2.3 km/hr. When the runner is 8.4 km from the finish line, a bird begins flying from the runner to the finish line at 9.2 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and

    asked by argelia on September 4, 2012
  17. physics 121 hanging sign

    A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge

    asked by Jay on July 14, 2010
  18. Physics 121 HW

    A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge

    asked by Jay on July 14, 2010
  19. arithmetics

    hello can someone help me understand these questions? It's for a test that has arithmetic questions on it and Im trying to study them but I cant do that unless I actually know how to do them. #5 A carpenter needs 4 boards, each 2 feet 9 inches long. If

    asked by chrissy on August 1, 2007
  20. Math

    A swimming pool that is 100 feet in length by 10 feet deep and 40 feet wide is filled with water how many gallons of water are in the pool. (1cubic foot of water = 7.48 gallons of water) well for the volume of the water i got 40,000 cubic feet then for the

    asked by Mike on May 14, 2008
  21. physics

    The barrel of a rifle has a length of 0.976 m. A bullet leaves the muzzle of a rifle with a speed of 561 m/s. What is the acceleration of the bullet while in the barrel? A bullet in a rifle barrel does not have constant acceleration, but constant

    asked by Jason on November 19, 2014
  22. Physics

    The barrel of a rifle has a length of 0.916m. A bullet leaves the muzzle of a rifle with a speed of 621m/s. What is the acceleration of the bullet while in the barrel? A bullet in a rifle barrel does not have a constant acceleration, but constant

    asked by sam on September 14, 2012
  23. Physics

    In procedure 1: suppose the hanging mass is mH = 203 g and the mass of the cart is mC = 1286 g. a) Assume there is no friction anywhere in the system, and the system starts at rest. i. Find the magnitude of the acceleration of the masses. a = m/s2 ii. Find

    asked by Sara on July 10, 2015
  24. Physical science

    Athlete runs twice round the circular athletics track. The track has a total length of 320 m and a diameter of 100 m. Make a scale drawing of the track. Use a scale of 1 cm represents 10 m. Taking the start as point 1, find both the athlete's distance and

    asked by Khanyisa on January 30, 2011
  25. Statics

    You have a stainless steel hollow rod (E=193GPa,ν=0.29) that has an inner radius r of 1.2cm, a wall thickness t of 0.7mm, and a length L of 5cm. Calculate the critical loads, in kN, for local buckling and Euler bucking (Pcr,local and Pcr,Euler,

    asked by qwerty on October 23, 2014
  26. Physic

    The built-in composite bar BC of length L=2 m is composed of two materials with equal cross sectional area A = 100 mm2. The first material has elastic modulus E=1 GPa. The second material is twice as stiff, with a modulus of 2E or 2 GPa. The bar is

    asked by DELL on May 9, 2013
  27. Physics

    A rocket launched from earth with a rest mass of 150,000Kg moves at 2.8x10^8 m/s during a voyage that takes 1.3 years, according to a clock on board the rocket. a) Using relativity, calculate how long the voyage would take, from earth's reference frame. b)

    asked by Dani on September 9, 2018
  28. PHYSICS(HELP)

    A satellite with a mass of ms = 7.00 × 103 kg is in a planet's equatorial plane in a circular "synchronous" orbit. This means that an observer at the equator will see the satellite being stationary overhead (see figure below). The planet has mass mp =

    asked by Anonymous on October 17, 2013
  29. PHYSICS

    A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the

    asked by urgent help needed on October 28, 2016
  30. physics

    Two 2.3 kg balls are attached to the ends of a thin rod of negligible mass, 65 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 44 gm wad of wet putty

    asked by Putty wad on November 16, 2010
  31. physics

    A student throws a 9 gram of gum is thrown across the physics lab from a distance of 2.5 m. When the gum has a horizontal velocity of vo it connects with a mass on the end of 1.62 kg simple pendulum which is initially at rest. The pendulum has a length of

    asked by Jacob on April 12, 2010
  32. Physics

    A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the

    asked by urgent help needed on October 30, 2016
  33. Physics

    A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the

    asked by Valentina on October 27, 2016
  34. trig

    A 52-foot wire running from the top of a tent pole to the ground makes an angle of 57° with the ground. If the length of the tent pole is 44 feet, how far is it from the bottom of the tent pole to the point where the wire is fastened to the ground? (The

    asked by janice on November 16, 2012
  35. Math

    A rectangular swimming pool is bordered by a concrete patio. The width of the patio is the same on every side. The area of the surface of the pool is equal to the area of the patio. What is the width of the patio? (Length of Pool: 24 Width of Pool: 16)

    asked by Greg on February 3, 2016
  36. math

    Jackson has a 2-meter plank of wood. He cuts two pieces of wood that are each 0.55 meter long. Then he cuts another piece that is 0.28 meter long. He uses the remainder of the wood to make a ramp. What length of wood did he use for the ramp?

    asked by kalli on October 17, 2013
  37. Language Arts

    Mr. Peters learns to be satisfied with his life and decides not to use his third and final wish. Did Mr. Peters make the right decision to help him resolve his internal conflict? Compose an argument that is at least one paragraph in length. Support your

    asked by Door_frame_BLANK on October 23, 2018
  38. physics

    You know that you can safely stand on the hang-over end of a heavy plank that rests on a table. How far depends on your mass and the mass of the plank. Suppose you can stand on the end of a plank that overhangs the edge of the supporting table 1/4 its

    asked by Claire on July 22, 2008
  39. math

    An architect is planning a building in the shape of a rectangular prism. The length of the building is 20 feet more than its width and the height is 10 feet more than twice its width The inside volume of the building is 2,000,000 cubic feet. A model of the

    asked by Kyle Raeside on November 26, 2018
  40. Algebra

    For the pair of similar solids, find the value of the variable. radius 15cm height 6cm the other is radius 5cm height x cm 3cm **** 18cm 16cm 2cm For the pair of similar solids, find the value of the variable. base x mm height 24mm the other base 4mm

    asked by Lost on February 23, 2016
  41. 8th grade

    robert has a piece of twine 3/4 yards long. he needs a piece of twine that is 2/3 of this length. how long of a piee of twine does robert need?

    asked by natalie on August 17, 2010
  42. Math

    Proportion - If a 30-foot tree cast an 18-foot shadow, find the length of the shadow cast by a 24-foot tree.

    asked by Judy on September 10, 2014
  43. Math

    The coordinates of the midpoint of the line AB are (1, 2). The length of the line AB is 10 units. (a) If the gradient of AB is 0, find the coordinates of A and B (b) If the gradient of AB is 34 , find the coordinates of A and B.

    asked by sham on February 1, 2017
  44. Physics

    SEQUENCE of questions: 1)A typical steel B-string in a guitar resonates at its fundamental frequency at 240 Hertz. The length of the string is 0.620 m. What is the wave velocity along the string? Find your answer in m/s MY ANSWER 148.8m/s? 2)The tension in

    asked by Jamie on March 31, 2011
  45. Biology

    What is a molecular clock? A)a tool scientists use to date fossils B)a tool scientists use to determine how many mutations a species accumulates over time C)a tool scientists use to determine how long two species have been evolving independently D)a tool

    asked by Corie on January 22, 2013
  46. Math

    A hat contains 3 ​marbles; one green​, one blue​, and one orange. Two marbles are selected at random without replacement from the hat. ​a) Determine the number of points in the sample space. ​b) Determine the probability of selecting exactly 1

    asked by David on June 5, 2016
  47. Physics

    The equation describing the (r, \theta ) coordinates of points along a single field line of a magnetic dipole is r=R_0 \sin ^2(\theta ) where \theta =0 is in the direction of the dipole moment and R_0 is a constant which is different for each field line.

    asked by Phy on April 6, 2013
  48. Precalculus

    Combined area of 1680ft^2 for 4 identical rectangular corrals. Corrals are joined together and no fencing at the back wall of the barn. 200=5d+4w 1680=4dw What length will produce the maximum area? d=12 The dimensions of each corral (lxw) is 12'x35' What

    asked by Cole on October 6, 2012
  49. Math

    the figure AB = 11cm, BC = 8cm, AD = 3cm, AC = 5cm and DAC is a right angle. The size of ADC; The size of ACB; The area of the quadrilateral ABCD. tan ADC = 5/3 11^2 = 5^2+8^2 - 2*5*8 cos ACB Now you can figure the areas of the triangles ACD and ACB, and

    asked by Kd on September 19, 2018
  50. 5th grade Math

    Kate is going to carpet her living room floor and drew the diagram shown. (I am not able to submit the drawn diagram. However I will try to describe) The diagram is a rectangle: It is 16 feet at the top showing a right angle at the top left and a right

    asked by Please Help on December 12, 2009
  51. Physics

    The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. The sudden converse of water to water vapor causes a dramatic expansion that can rip apart shoes. Water has density 1000 kg/m^3 and requires 2256

    asked by Scott on February 24, 2011
  52. physics (please help elena)

    We will now examine how much time we need to stop a ship-engine-like cylinder. Suppose you take a rotating cylinder and let it roll to the right until it reaches a vertical wall. It then spins against the two walls as shown in the picture, slowly slowing

    asked by Steven on August 6, 2013
  53. algebra

    what would a graph look like if.. y= (3/4)x + 2 and the domain is... x = {-8,-4,0,4,8} would it be discrete or continous? Kelly you should be able to see that the first equation is a line. You should be able to determine the slope and intercept as well.

    asked by Kelly on August 27, 2006
  54. physics

    Both drawings show the same square, each of which has a side of length L = 0.86 m. An observer O is stationed at one corner of each square. Two loudspeakers are located at corners of the square, as in either drawing 1 or drawing 2. The speakers produce the

    asked by lamaye on December 8, 2014
  55. physics

    Both drawings show the same square, each of which has a side of length L = 0.86 m. An observer O is stationed at one corner of each square. Two loudspeakers are located at corners of the square, as in either drawing 1 or drawing 2. The speakers produce the

    asked by Anonymous on January 28, 2013
  56. physics

    A 500-kg cannon and a supply of 80 cannon balls, each with a mass of 45.0 kg, are inside a sealed railroad car with a mass of 11000 kg and a length of 49 m. The cannon fires to the right; the car recoils to the left. The cannon balls remain in the car

    asked by Katie on March 3, 2012
  57. math

    At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice

    asked by HELP ME PLSSSSSSSS on June 1, 2011
  58. Mathematics

    At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice

    asked by HELP on June 1, 2011
  59. Math

    At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice

    asked by PLEASEEEE on June 1, 2011
  60. Physics (pressure)

    A barometer has air trapped above the mercury in an inverted tube with the opening in a reservoir of mercury. When the length l of air trapped is 10.0cm, the mercury height h is 72.0. When the tube is slightly lowered into the reservoir, l becomes 8.0cm.

    asked by Isabel on December 16, 2016
  61. college math

    1). Sum of three numbers is 45. One number is five more than the second number.It is also twice the third.Find the numbers. 2).Perimeter of quadrilateral is 52in. Longest side is is three times as long as the shortest side. The other two sides are equally

    asked by micah on March 11, 2012
  62. geometry

    Marc is visiting washington dc he wants to know the height of the washington monument the length of the monument shadow is 111 feet long at the same time that marcs shadow is 1 foot long Marc is 5 feet tall using this data find the height of the monument

    asked by :) on March 5, 2012
  63. physics/ help

    a stack of seven identical aluminum blocks, each of length l = 17.1 cm and thickness d = 1.8 cm, stacked on a table. (a) How far to the right of the edge of the table is it possible for the right edge of the top (seventh) block to extend? (b) What is the

    asked by I need help please!! on April 11, 2011
  64. Algebra 1

    A right triangle has a base measuring 5 centimeters & a height of 12 centimeters. By what amount will the area of this triangle increase if both the base length & the height are tripled? Answers: a.) 240 square centimeters b.) 270 square centimeters c.)

    asked by Taylor Leigh on April 23, 2012
  65. Math

    The area of a tennis court can be represented approximately by the function A(x) = 10x2 + 3x - 1, and its length can be represented by l(x) = 5x - 1, where x is a distance, in metres. a) Write and simplify a function, w(x), to represent the width of a

    asked by Alex on January 6, 2015
  66. maths and physics

    A particle of mass 4 kg is attached to one end of an inelastic string and a particle of mass 2 kg is attached to the other end of the string.The string has length 4m and is hung over a smooth pivot at its midpoint. The Pivot lies 3m above the ground.How

    asked by james on March 3, 2013
  67. math help mepls

    Triangle ABC has an obtuse angle at B, base BC has length equal to 30 and height equal to 24. (This height is taken with respect to base BC). D is a point on the line segment BC and E is a point on AC such that DE∥AB. F is a point on AB such that

    asked by clavin on June 7, 2013
  68. math

    From a point on the grornd 500m from the base of a building an observer find that the angle of elevation tothe top of building is 24degree and the angle of elevation to the top of a flagpole on top of the building is 27degree. Find the height of the

    asked by mata on February 9, 2016
  69. maths

    A particle of mass 4 kg is attached to one end of an inelastic string and a particle of mass 2 kg is attached to the other end of the string.The string has length 4m and is hung over a smooth pivot at its midpoint. The Pivot lies 3m above the ground.How

    asked by Jess on March 2, 2013
  70. math

    a circle with center o has radius of 5cm and angle of 60 degrees. find the area of the minor sector find the area of angle aob find the area of the minor segment find the length of the arc minor arc i found the area which is 78.54cm pi =3.14

    asked by uniquestarz on August 10, 2016
  71. algebra

    chuck and dana agree to meet in florida for the weekend. Chuck travel 152 miles in the same time that Dana travels 132 miles. If chuck rate of travel is 5 mph more than Dana and they travel the same length of time, at what speed does chuck travel

    asked by beverly on February 12, 2014
  72. geometry

    if home plate is 60.5 feet from the pitcher's mound, find the distance from the pitcher's mound of a major league baseball field to the center of a circumscribed circle that touches home plate, 1st base and second base. Find the exact, simplified length of

    asked by susan on October 16, 2011
  73. Math

    There is a football field. Around the field is the section of a spectator. The edge of the football field is 5 meters distance from the outside edge of the section of the spectator. The section of the viewer is 130m in length and has a width of 85m. The

    asked by Timothy on February 1, 2016
  74. Math

    Kayla is 5 feet tall, and Maria is 5.5 feet tall. Kayla's shadow at 3pm outdoors measured 3feet. The length of each persons shadow is proportionate to her height. How many feet long is Maria's shadow at 3pm.

    asked by Jazmin on December 30, 2011
  75. Physics

    A runner is jogging at a steady 6.2 km/hr. When the runner is 4.9 km from the finish line, a bird begins flying from the runner to the finish line at 24.8 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and

    asked by Joseph on August 20, 2015
  76. physics

    A child of mass m swings in a swing supported by two chains, each of length R. The mass of the swing’s seat is negligible. If the tension in each chain at the lowest point is T, find: 4.1 the child’s speed at the lowest point; 4.2 the force exerted by

    asked by Tadie on April 19, 2018
  77. Physics

    In the configuration shown (10m incline for m1 and 8m vertical length for m2 with a spring under it, both masses are linked by a rope and a pulley at the top), the 52.0 N/m spring is unstretched, and the system is released from rest. The mass of the block

    asked by Alphonse on October 25, 2012
  78. Physics

    In the configuration shown (10m incline for m1 and 8m vertical length for m2 with a spring under it, both masses are linked by a rope and a pulley at the top), the 52.0 N/m spring is unstretched, and the system is released from rest. The mass of the block

    asked by Alphonse on October 25, 2012
  79. Calculus

    Luke and Leia are trapped inside a trash compactor on the Death Star. The side walls are moving apart at 0.1 m/sec, but the end walls are moving together at 0.3 m/sec. The volume of liquid inside the compactor is 20 cubic meters, a constant. Write an

    asked by Amanda E. on March 19, 2011
  80. Geometry

    A toddler’s playground has two slides on either side. The slide on the left is situated at a 45° angle to the ground and is 68 centimeters away from the base of the playground. The slide on the right is positioned at a 30° angle to the ground and is

    asked by Silvia on December 4, 2011
  81. Chemistry

    Aluminum wire is sold on 10 pound spools (100.00 lbs). The diameter of a 12 gauge aluminum wire sold on these spools is 0.0808 inches. If the density of the aluminum is 2.70 g/ cm3. Wat is the length ( in meters) of the wire on the 10 pound spool of 12

    asked by leia on January 6, 2011
  82. Physics

    Football is kicked up into the air with a velocity of 20m/s. a. Determine the time the football is in the air. b. Determine the maximum height the football would reach. c. As the ball is kicked it encounters a weird horizontal wind that gives it a velocity

    asked by Sarah on November 19, 2012
  83. physics- electrodynamics

    can someone walk me through this --- you'd be a lifesaver a rectangular pipe running parallel to the z axis(-‡ to +‡) has 3 grounded metal sides at y=0, y=a and x=0. the fourth side at x=b is maintained at a specified potential v0(y). a. Develop a

    asked by jake on August 5, 2007
  84. Physical science

    The engine of a car is being lifted out of the car by using a pulley system. The weight of the engine is 8000N. Use a scale diagram to determine the horizontal force, F1 that a mechanic has to use to hold the engine in such a position that the rope makes

    asked by Pamela on March 7, 2012
  85. Introduction to the Criminal Justice System

    There is a large round up of gang members, this is a federal case but is being supported by about 50 local officers and state troopers. I need help please, coordinating he informaiton for briefing on the jprocess at the federal court building. the briefing

    asked by Jo on November 30, 2006
  86. physics

    A mass M of 2.95 kg is attached to the end of a string whose length is 0.420 m. The mass slides without friction on a horizontal surface as indicated in the diagram. If the string can withstand a maximum tension of 127.5 N, what is the maximum tangential

    asked by Anonymous on October 16, 2013
  87. calculus

    A display case is in the shape of a rectangular box with a square base. Suppose the volume is 21 cubic ft and it costs $1 per square ft. to build the glass top and $0.50 per sq. ft. to build the sides and base. If x is the length of one side of the base,

    asked by sara on December 3, 2013
  88. Math

    1. Which of the following is a possible measure of the area of a square rug? A. 18 square feet B. 24 square feet C. 36 square feet** D. 48 square feet 2. Based on your answer to the precious question, what would the length of one side of the rug be? A. 4

    asked by Serena on March 3, 2016
  89. Java Help

    I am just starting out in programming. If someone could help me with these assignments, it would be greatly appreciated. "Write a Rectangle class. This class represents Rectangles. Each Rectange has the X and Y coordinates of its center point (as doubles)

    asked by Jim on May 21, 2008
  90. Biomechanics

    A hammer thrower is trying a new throw by adjusting the arm length to increase angular velocity technique1 angular velocity of15.4rad/ s with the hammer being 139.8 cm from the shoulder joint in technique2 they rotate with an angular velocity of 13.9 rad/s

    asked by Vanitha on March 9, 2013
  91. Science

    You are given 10 µL of a DNA stock solution that has 1.0 µg target DNA/µL. The target DNA molecule is 2.9 kb in length. Describe a set of serial dilutions that would yield a standard curve with the following concentrations: 2 x10^7 copies/µL, 2x10^6

    asked by Meena on April 7, 2014
  92. Physics

    A filmmaker wants to achieve an interesting visual effect by filming a scene through a converging lens with a focal length of 52.0 m. The lens is placed betwen the camera and a horse, which canters toward the camera at a constant speed of 7.4 m/s. The

    asked by Aine on March 16, 2018
  93. math

    Low-voltage lighting is a popular feature of landscaping. Two pathways meet at 30 degrees to each other. One pathway has the lighting, and the first light is placed where the two paths meet. The distance between successive lights is 5m, and each has a

    asked by liz on October 29, 2007
  94. physics

    A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied

    asked by jenny on September 2, 2010
  95. calculus

    A closed cardboard box is made with a square top and bottom, and a square horizontal shelf inside that divides the interior in half. A total of 12 square meters of cardboard is used to make the top, sides, bottom, and shelf of the box. What should the

    asked by h on November 15, 2013
  96. science

    A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied

    asked by christine on September 2, 2010
  97. Physics

    A vertical container with base area of length L and width W is being filled with identical pieces of candy, each with a volume of v and a mass m. Assume that the volume of the empty spaces between the candies is negligible. If the height of the candies in

    asked by AGuy on September 1, 2014
  98. Physics

    A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied

    asked by Mia on September 1, 2010
  99. Physics

    A viaduct is being re-levelled by using a jackscrew with a pitch of 5mm. The mass of the top slab of the viaduct is 20 tonnes (20000kg) and its length is 40m. The lever arm used to turn the jackscrew is 60 cm long. Calculate the effort force to be applied

    asked by Mia on September 1, 2010
  100. Physics

    A simple pendulum consists of a light rod of length L = 0.9 m anchored at a fixed point (like the ceiling), and a small mass m = 0.5 kg attached to the free end.  The configuration is moved to an angle θ = 39 degrees from the vertical and released from

    asked by Alphonse on October 22, 2012

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