1. Physics-torques

    Suppose that a meter stick is balanced at its center. A 0.27-kg is positioned at 18 cm from the left end of the meter stick. Where should a 0.28 kg mass be placed to balance the 0.27 kg mass? Express your answer in terms of the position (in cm) of the

    asked by Nicole on March 20, 2007
  2. Physics

    A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 0.8 kg object at the origin, a 2.8 kg object at (0 m,1.7 m), and a 4.4 kg object at (3.8 m,0 m). Find the

    asked by Chelsea on February 12, 2013
  3. physics

    Hi! I need a bit of help with 10 Physics problems. I have about 70, but these are the ones I either didn't get or needed help with. Thank you so much!! What is the decimal equivalent of 3.14 × 10 7? What is the decimal equivalent of 2.8 e-4? (In the

    asked by Yulia on August 24, 2009
  4. Physics

    two skaters, each of mass 55 kg, approach each other along parallel paths separated by 3.8 m. They have opposite velocities of 1.9 m/s each. One skater carries one end of a long pole with negligible mass, and the second skater grabs the other end of it as

    asked by Eric on June 2, 2012
  5. WORD PROBLEM

    GOING SKIING. LEON DROVE 270 MILES TO THE LODGE IN THE SAME TIME AS PAT DROVE 330 MILES TO THE LODGE. IF PAT DROVE 10 MILES PER HOUR FASTER THAN LEON, THEN HOW FAST DID EACH OF THEM DRIVE? I REALLY NEED HELP ON THIS ONE. PLEASE! IF YOU CAN SHOW THE WORK

    asked by leleirvin on August 12, 2005
  6. Chemistry

    We have to conduct a lab experiment for a photochemical reaction. We will be using a redand violet film and filter paper labeled 40W and 60W. On each piece of paper we will add 1 drop of NaCl and AgNO3 and then let it sit under a lamp to see what happens.

    asked by Hannah on November 2, 2011
  7. LA

    1. What is the most likely explanation for the poet's ending "Miracles" with this line? What stranger miracles are there? (1 point) He wishes to tell the reader that miracles are strange occurrences. He wishes to tell the reader that he has described all

    asked by Sidney on February 15, 2019
  8. English

    This is a chemistry lab report, but I was wondering if someone could edit the grammar and look at the sentence structure, etc. I know it's really long and boring, but even if you just look over a bit of it, I would really appreciate it. And I'm assuming

    asked by a Canadian on February 21, 2013
  9. Physics

    A roller-coaster car speeds down a hill past point A and then rolls up a hill past point B. The car has a speed of 16.1 m/s at point A. The acceleration of gravity is 9.81 m/s^2. Radius of Circle A is 9.98 m. Radius of Circle B is 15.5 m. a) If at point A

    asked by Jaylee on November 13, 2010
  10. PHSICS

    1. How much kinetic energy does a 1 kg ball have if it has a velocity of 10 m/s? Choose one answer.and explain a. 100 J. b. 50 J. c. 10 J. d. 5 J. 2. You have the grand idea that the science building would be better situated if you moved it North by 4

    asked by Anonymous on September 22, 2012
  11. geometry

    The Louvre Pyramid in Paris, France, has the same proportions as the Great Pyramid of Giza in Egypt. The width of the Louvre Pyramid is 35.42 meters, and the width of the Great Pyramid of Giza is 0.23033 kilometers. What is the scale factor of the Louvre

    asked by kirk on August 18, 2016
  12. Physics

    At one instant a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 18 m/s. Then, 13 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 13 m/s. For the cyclist in this 13 s interval what is

    asked by Tammie on September 11, 2012
  13. Math PLEASE HELP FAST!!!!

    Kevin needs to convert 620 millimeters per minute to meters per hour. Which conversion factors should he use? A. 0.001m/1mm and 1h/60min B. 0.001m/1mm and 60min/1h C. 1mm/0.001m and 1h/60min D. 1mm/0.001m and 60min/1h PLEASE HELP!!!!

    asked by Happy on January 30, 2013
  14. Physics

    An object with total mass mtotal = 15.8 kg is sitting at rest when it explodes into three pieces. One piece with mass m1 = 4.5 kg moves up and to the left at an angle of θ1 = 18° above the –x axis with a speed of v1 = 27.6 m/s. A second piece with mass

    asked by MUHAMMAD JUNAID on March 26, 2019
  15. Physics- Newton's Laws in Space

    Hi! I would really appreciate it if you could help me think through these questions discussing Newton's Laws in Space... Directions: Consider the following scenarios ignoring the effects of gravity: 1. You are the capitan of a spacecraft traveling in the

    asked by Sophie on December 2, 2006
  16. Physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

    asked by Kayla on September 11, 2012
  17. Physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

    asked by Kayla on September 11, 2012
  18. Physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

    asked by Kayla on September 11, 2012
  19. pyhsics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the

    asked by ali on September 8, 2012
  20. physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the

    asked by Dante on August 29, 2012
  21. Physics

    A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

    asked by Kayla on September 11, 2012
  22. Physic

    Three balls are attached to a light rigid rod, as shown in the figure. A fulcrum is located at xf = 18.0 cm measured from the left end of the rod. Ball A has mass mA = 65 g and is located at xA = 3 cm. Ball B has mass mB = 12 g located at xB = 22 cm. Ball

    asked by panda on March 3, 2011
  23. Physics

    A mass m = 85 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.2 m and finally a flat straight section at the same height as the center of the loop (19.2 m off the ground). Since the mass would not make it

    asked by Michelle on October 31, 2015
  24. HSM210

    Mrs Sue, Sorry to keep bothering you ! I have once more corrected the four answers . Do you mind checking them again. I so hate these assignments as I have such a hard time. Thank you so much for looking over my answers for me. 8. The victims’ rights

    asked by david on January 19, 2010
  25. Macroeconomics

    Economist John Taylor has suggested that the Fed use the following rule for choosing its target for the federal funds interest rate (r): r= 2% + ð + 1/2 (y-y*) / y* + 1/2 (ð - ð*), Where ð is the average of the inflation rate over the past year, y is

    asked by Tamatha on March 21, 2011
  26. Analyze the Steel Type Coal Ball Grinding Mill Fau

    1. The little pineapple snaggletooth In the daily use of Ball Mill, the little pineapple snaggletooth happens most often, the reasons are as follows: (1). The little pineapple design strength is weak, and the manufacturing quality requirements is

    asked by jiandan on July 22, 2012
  27. Science Please give me a hint thank you

    how can two observers measure a different speed for the same moving object

    asked by Asia on March 28, 2010
  28. physical science

    What is the kinetic energy of a 27 kg dog that is running at a speed of 8.3 m/s (about 19 mi/h

    asked by t on May 31, 2011
  29. science

    What is the kinetic energy of a 23 kg dog that is running at a speed of 7.4 m/s (about 17 mi/h)?

    asked by vanessa on February 4, 2012
  30. science

    what units would you use to measure the speed of a car on the highway?

    asked by kahy on August 27, 2010
  31. physics (Science)

    If a bee flew 27 centimeters in 10 seconds what would its speed be?

    asked by Sara on March 28, 2011
  32. science

    how can two observers measure a different speed for the same moving object

    asked by dina on March 28, 2010
  33. physics

    What is the kinetic energy of a 15 kg dog that is running at a speed of 8.7 m/s (about 19 mi/h)?

    asked by kim on September 17, 2016
  34. physical science

    a 1kg object has kinetic energy of 1J when its speed is?

    asked by tracey on September 19, 2012
  35. physics

    how do i find the amount of work done when given mass and speed?

    asked by Anonymous on February 24, 2011
  36. science

    what is the KE of a 0.2kg rolling ball travelling at a speed of 5m/s

    asked by dianne on July 7, 2015
  37. physical science

    why the speed of sound is faster in solids than in gases.

    asked by sidney on October 21, 2015
  38. physics

    a hare can run 100m in 5 seconds what is its speed

    asked by tom turner on January 17, 2011
  39. physics

    What is the kinetic energy of a 15 kg dog that is running at a speed of 8.9 m/s (about 20 mi/h)?

    asked by Anonymous on September 24, 2011
  40. physics

    A boy walks 13 km in 2.0 h. What is his speed in km/h and m/s. Show work.

    asked by Lexi on August 25, 2011
  41. Science (Physics)

    1. Which of the following is the fastest speed? Show your working. (a) 60 km/h (b) 15 m/s (c) 1.1 km/min

    asked by Jaizzer on August 16, 2012
  42. physics

    what happens if the cars on the roller coaster has too slow speed?

    asked by sjkal on December 9, 2010
  43. physics

    The equation for distance is d = st. How far does a car go in 10 seconds at a speed of 44 m/s?

    asked by manuel on May 30, 2014
  44. Science

    The speed of a motorcycle increases from 10.0 km/hr to 50.0 km/hr in 9.0 seconds. What is the acceleration?

    asked by Paul on October 19, 2015
  45. Earth Science

    Why is the speed of Earth's rotation different at the equator than it is at the poles?

    asked by Jackie on October 7, 2009
  46. dps dhanbad

    distance=8m,speed=42/5centimeter/sec,time=?

    asked by rahul on November 30, 2015
  47. Physics

    Derive an expression for escape speed of satellite.

    asked by Abidur on April 9, 2017
  48. science

    What is the otter's acceleration if it increases its speed 3 m/s each second for 4 seconds

    asked by Mely on November 15, 2013
  49. Science please i need help!!!!!!!!!!

    how can two observers measure a different speed for the same moving object

    asked by dina on March 28, 2010
  50. Science

    A1kg mass has a Kinetic energy of 1j when it's speed is

    asked by Anonymous on October 23, 2018
  51. physics

    A 9.000 kg ball has a speed of 16.0 m/s. What is its kinetic energy?

    asked by Anonymous on March 20, 2011
  52. physics

    what is the angular speed of Earth around the Sun in radians per second

    asked by craig on October 9, 2009
  53. PHYSICS

    Why do tachyons increase in speed by decreasing in energy

    asked by TRYSYENS on January 15, 2016
  54. physics

    what is the speed in unit if a body travels at 108 km/hr

    asked by Anonymous on September 14, 2011
  55. physic 2a

    A car accelerates uniformly from rest to a speed of 55.0 mi/h in 11.0 s.

    asked by Anonymous on September 1, 2013
  56. science

    Measuring the speed of light through gelatin using a laser

    asked by Thomas on March 4, 2015
  57. Physics

    Please help! How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?

    asked by Rose on November 9, 2010
  58. physical science

    What is the kinetic energy of a 29 kg dog that is running at a speed of 8.8 m/s (about 20 mi/h)?

    asked by Liz on September 9, 2012
  59. Km/h

    A cyclist travels 3 km in 10 mins . Find his speed in km/h

    asked by Emily on October 6, 2014
  60. physical Science

    What was the average speed in km/h of a car that travels 400km in 4-5h?

    asked by Joslyn on February 9, 2012
  61. Physics

    How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?

    asked by Rose on November 9, 2010
  62. science

    What will happen if you choose surface speed too low?

    asked by PHATQ on September 9, 2015
  63. Science

    Which of these rates of speed is the fastest? 40 km/h 28 mi/h 19 knots/h I believe it is 40 km/h am I correct?

    asked by Samantha on October 27, 2008
  64. Physics

    The speed of an electron is known to be between 3.0×10^6 m/s and 3.3×10^6 m/s . Estimate the uncertainty in its position.

    asked by paige on November 27, 2011
  65. Physics

    The speed of the tip of a second hand of length 5 cm of a clock is m/s

    asked by Rahul on January 20, 2018
  66. physics

    What is the kinetic energy of a 19 kg dog that is running at a speed of 7.7 m/s (about 17 mi/h)?

    asked by Anonymous on June 4, 2014
  67. math

    a car traveled 220km in 2 hours.what is the speed in km/h

    asked by salome thwala on August 28, 2013
  68. math

    What should be the result when the speed 45m/sec converted into km/hr

    asked by Anonymous on November 11, 2016
  69. Physics

    What is the speed of a proton whose kinetic energy is 12.9 keV?

    asked by Anonymous on January 26, 2014
  70. physics

    Determine the kinetic energy of an object 8.0 kg going at a speed of 12.0 m/s.

    asked by janai on June 27, 2013
  71. Physics

    What is the rotational speed of the minute hand on a clock?

    asked by Beth on December 2, 2018
  72. physics

    the formula of centripital accelaration is v>2/r Q:Why here is square of speed ?

    asked by Bilal on November 7, 2014
  73. science

    which of the following does not change when a car keeps a constant speed but changes direction

    asked by Grace on April 28, 2016
  74. physics

    What is the kinetic energy of a 29 kg dog that is running at a speed of 7.9 m/s (about 18 mi/h)?

    asked by chanelle on July 14, 2011
  75. Science

    What is the speed of a rock if you drop it from a tall bridge

    asked by Gavin on October 28, 2019
  76. Physics

    If you run 100 m at 5 m/s and 300 m at 1 m/s, what is your average speed?

    asked by anonymous on June 21, 2012
  77. business communication

    Should you bribe a customs official to speed up delivery?

    asked by joy on February 16, 2011
  78. physics

    What is the kinetic energy of a 20 kg dog that is running at a speed of 7.3 m/s (about 16 mi/h)?

    asked by Shay on January 27, 2011
  79. physics

    the radial acceleration at the instant when the speed is v=15m/s

    asked by elvira on August 3, 2019
  80. math

    if you jog 72 miles in 3.5 hours what is your average speed?

    asked by tedeja on October 19, 2010
  81. Physics

    If you throw a 0.5 kg ball straight up with a speed of 10 m/s, how high will it go?

    asked by Sandra on March 10, 2014
  82. gwagwa

    a bullet of 0.05kg has a speed of 400m/s what is it kinetic

    asked by ukwu on February 5, 2014
  83. math

    a motorist goes 78km in 40minutes calculate it speed

    asked by Anonymous on July 4, 2011
  84. Physic

    An airplane flew 1000km in 4h. What was the airplanes speed?

    asked by Brionna on February 5, 2012
  85. Physics

    A satellite is orbiting the earth at a distance of 1.00 x 10^3 km. What is its speed?

    asked by Andrew on November 28, 2012
  86. Physics

    How can we find the resultant force if the mass and SPEED are given?? Help me please!!

    asked by Vathana on March 19, 2013
  87. physics

    you are moving at 12m/s towards a mirror,what is the speed of your image?

    asked by ernest on August 11, 2016
  88. physics

    What is the rotational speed of the hour hand on a clock?

    asked by Marian on October 27, 2016
  89. Physics

    A car with a mass of 1500kg is moving at a speed of 50 km/h. What is it's Ek?

    asked by Mileena on April 3, 2017
  90. science

    If the distance stays the same but they time increases what happens to the speed?

    asked by saad on January 9, 2016
  91. Maths

    Amy walks 9km in 1.5hours.what is her speed?

    asked by Amy on October 13, 2016
  92. physics

    The speed of an electron is known to be between 3.0×10^6 m/s and 3.3×10^6 m/s . Estimate the uncertainty in its position.

    asked by paige on November 26, 2011
  93. Science-Motion

    How could an object accelerate while still traveling at a constant speed

    asked by mickey on March 23, 2011
  94. PHYSICS

    How can tachyons increase in speed by decreasing in energy

    asked by TRYSYENS on January 19, 2016
  95. physics

    the angular speed of the hour hand of a clock is

    asked by jason on December 1, 2016
  96. Physical Science

    What was the average speed in km/h of a car that travels 400.0 km in 4.5h?

    asked by Julie on March 6, 2010
  97. Math

    A car covers 2924 km in 43 hrs. What is it's speed

    asked by Monique on September 12, 2011
  98. Pyhsics

    what is the speed of the rocket when it is 345 m above the surface of the earth?

    asked by Anonymous on September 9, 2014
  99. physics

    What is the speed of a satellite in a geosynchronous orbit about Earth?

    asked by Garcia on October 4, 2012
  100. survey of sciences

    1. Explain what happens to the G-force as the speed of the centrifuge increases.

    asked by shaquilla on December 23, 2012

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