1. phy

    1 What is the gravitational field strength at a height h above the surface of the Earth? R is the radius of the earth gR2(R+h)2 gR(R+h) Rg(R−h) R2g(R−h)2 2 The instrument used for experimental determination of the value of the universal gravitational

    asked by christ on January 28, 2013
  2. physics

    A crate slides down an incline right angled trough. The coefficient of kinetic friction between the crate and the trought is mew_k(not sure if i spelt it right). What is the acceleration of the crate in terms of mew_k theda and g? I think I need to use

    asked by Brian on November 28, 2006
  3. physics

    25 gram mass is given an upward acceleration of 30 m/s^2 by a rope. need help finding tension in the rope? not sure how to set up the problem?? Tension is the reaction force. Clearly you have two forces in opposite directions. Let T be the tension in the

    asked by greg on September 25, 2006
  4. Human growth

    Piaget's concept of conservation is important to developmental scientists when assessing thinking of preschool and school-age children. Which one of the statements below best illustrates that the child is able to conserve? a. Ricki can reason that if there

    asked by Tonya on December 24, 2015
  5. science

    A gardener holds a hose 0.75m above the ground such that the water shoot out horizontally and hits the ground at a point 20m away.What is the speed with which the water leaves the hose?

    asked by rhamlyn casis on February 20, 2017
  6. physics

    Spider silk is a remarkable elastic material. A particular strand has spring constant 70 mM/m, and it stretches 9.5 cm when a fly hits it. How much work did the fly's impact do on the silk strand?

    asked by Eliana on March 9, 2012
  7. physics

    A pile driver of mass 1000kg,hits a post 3m below it.It moves the post 10mm.Assuming gravity=10m/s,what is the kinetic energy of the pile driver?

    asked by peter on November 22, 2012
  8. Physics

    An airplane is flying with a velocity of v0 = 260 m/s at an angle of 30.0° with the horizontal. When the altitude of the plane is h = 2.0 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle ?

    asked by Student on September 4, 2007
  9. Physics

    A ray of light hits a side of Lucite ( n = 1.5) prism at 50 degree. Assuming that the nearest vertex has an angle of 70 degrees, what is the angle of light that leaves the prism.

    asked by Jeremy on April 25, 2011
  10. physics

    You are trying to find out how high you have to pitch a water balloon in order for it to burst when it hits the ground. You discover that the balloon bursts when you have pitched it to a height of 14 m. With what velocity did the balloon hit the ground?

    asked by jj on October 2, 2011
  11. physics

    You are trying to find out how high you have to pitch a water balloon in order for it to burst when it hits the ground. You discover that the balloon bursts when you have pitched it to a height of 17 m. With what velocity did the balloon hit the ground?

    asked by Jason on November 19, 2014
  12. pre calc

    A rock is dropped form the top of a cliff. It takes 12 seconds to hit the ground. What is the height in feet of the cliff?? How fast is the rock moving when it hits the ground?

    asked by jim on February 19, 2012
  13. math

    A music stores stock of music includes new releasesand top ten hots on the ratio of 3:5. How many top ten hits are tthere in a shipment of 80???? What I did 3:5 *16:*16 48:80 Is it right or not plz tell. I am having so much difficult I in this one

    asked by ali on December 27, 2014
  14. physics

    A horse runs off of a 11 meter high cliff into the sea. The horse is running at a speed of 3.6 m/s. How much time does the horse spend in the air? How far from the base of the cliff is the horse when it hits the water?

    asked by shan on September 25, 2008
  15. calculus

    A paper clip is dropped from the top of a 144‐ft tower, with an initial velocity of 16 ft/sec. Its position function is s(t) = −16t^2 + 144. What is its velocity in ft/sec when it hits the ground? –96 –64 –32 0

    asked by Anonymous on December 8, 2016
  16. Physics - check my work

    A cannon is fired from a cliff 190 m high downward at an angle of 38o with respect to the horizontal. If the muzzle velocity is 41 m/s, what is its speed (in m/s) when it hits the ground? Please check my work. I think it’s wrong, but I don’t know where

    asked by Lindsay on November 9, 2007
  17. physic

    A projectivle is launched with an initial speed of 40m/s at an angle of 35 degree above the horizontal. The projectitile lands on a hillside 4s later. negelct air friction. a.What is the straight-line distance form where the prjectile was launched to where

    asked by Chan on September 30, 2009
  18. physics

    i posted this before but no one answered. please help me: A net force of 1.6×10−15 N acts on an electron over a displacement of 5.0 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron? (b) If the electron

    asked by jamaisa on March 9, 2011
  19. Math

    For Exercises 1–10, write each ratio as a fraction in simplest form. Then explain its meaning. 1. 3 sailboats to 6 fan boats 2. 4 tulips to 6 daffodils 3. 5 ducks to 30 geese 4. 5 baseballs to 25 softballs 5. 6 poodles to 18 beagles 6. 10 brown eggs to

    asked by Anonymous on September 8, 2015
  20. physics

    A car, mass - 1950 kg, accelerates at +2.33 m/s (squared). Find the magnitude of the normal force acting on the car. If later, when the car is cruising at 26.5 m/s, the driver applies a force of magnitude 10,000 N to stop the car. What is the distance it

    asked by jane on February 12, 2012
  21. physics

    A 18.0-kg cart is moving with a velocity of 7.30 m/s down a level hallway. A constant force of -13.0 N acts on the cart and its velocity becomes 3.30 m/s. (a) What is the change in kinetic energy of the cart? 1 . J (b) How much work was done on the cart? 2

    asked by Amelia on May 10, 2012
  22. Physics

    Two insulated charged metallic spheres A & B have their centres separated by a distance of 50cm in air. Calculate the force of electrostatic repulsion between them. If the charge on each is +5.0*10^-8c. The radii of A & B are negligible compared to their

    asked by Abdullahi on July 9, 2011
  23. Physics

    Two identical 21.2-kg spheres of radius 12 cm are 30.6 cm apart (center-to-center distance). (a) If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact? (b) If the spheres are initially at

    asked by Oscar on November 4, 2010
  24. Physics

    Two identical 19.8-kg spheres of radius 12 cm are 29.2 cm apart (center-to-center distance). (a) If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact? (b) If the spheres are initially at

    asked by Oscar on November 4, 2010
  25. NIC

    A model rocket is launched straight up from ground level with a speed of 34.2 m/s. Assuming that the only force acting on the rocket after launch is the force of gravity, a. How fast is the rocket going when it reaches a height of 22.5 m? (3 marks) b. How

    asked by DEEP on January 13, 2017
  26. Physics 141

    A bicycle wheel resting against a small step whose height is h = 0.125 m. The weight and radius of the wheel are W = 23.1 N and r = 0.330 m, respectively. A horizontal force vector F is applied to the axle of the wheel. As the magnitude of vector F

    asked by dakota22 on April 5, 2014
  27. Physics

    Two identical 21.6-kg spheres of radius 14 cm are 31.0 cm apart (center-to-center distance). (a) If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact? (b) If the spheres are initially at

    asked by Oscar on November 3, 2010
  28. physics

    A power boat of mass 460 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 765 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assume -- contrary to fact -- that the resistive force due to

    asked by kp on October 2, 2009
  29. Physics Mechanics

    A 2.30 kg block is acted upon by a horizontal force F(x) = 30.0 - 10.0x where the force is measured in Newtons if x is measured in meters. The coefficient of kinetic friction between the block and the flat surface is 0.170. The block is initially at x = 0

    asked by Aya Serghosian on October 23, 2014
  30. Physics

    Two forces, F1 and F2 , act at a point. F1 has a magnitude of 8.80N and is directed at an angle of 64.0 degree above the negative x axis in the second quadrant. F2 has a magnitude of 7.00N and is directed at an angle of 52.8 degree below the negative x

    asked by Poole on September 20, 2008
  31. physics

    An airplane is flying with a velocity of 224 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.1 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle?

    asked by james on February 7, 2010
  32. Physics

    An egg is dropped from 75 cm, what velocity is egg at when it hits the floor. What is the maximum height it can be dropped from to withstand impact velocity of 1.7ms-1 I used V*2 = v*2 + 2ad V = sqrt 0 + 2 x -9.8 x .75 = -3.83m/s 0.14744 m rounded to 0.15

    asked by Jeannine on August 8, 2014
  33. physics

    An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle è?

    asked by tish on February 10, 2011
  34. Physics

    A rock perched on the edge of a cliff falls off.  It starts from rest, and falls freely for 1.48 seconds before reaching the ground at the base of the cliff.   What is the speed of the stone just before it hits the ground?

    asked by Tara on September 18, 2016
  35. physical

    A bullet of mass 0.01 kg is moving horizontally with a speed of 100 m/s when it hits a block of mass 2 kg that is at rest on a horizontal surface with a coefficient of friction of 0.4. After the collision the bullet becomes embedded in the block.

    asked by dhaval on January 26, 2012
  36. Science

    Daylight hours in the summer time are noticeably longer than in the wintertime. Why? My answer: Since the direct sunlight hits the Northern Hemisphere and we are getting as much direct sunlight as possible, the days are longer. Is this correct?

    asked by Cassie on March 18, 2009
  37. physics

    An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.2 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle θ?

    asked by Mo on January 18, 2010
  38. physics

    An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.2 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle θ?

    asked by Mo on January 18, 2010
  39. las st

    An airplane is flying with a velocity of 240 m/s at an angle of 30.0o with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle θ?

    asked by des on February 6, 2017
  40. college physics

    An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle è?

    asked by jc on February 23, 2011
  41. physics

    An airplane is flying with a velocity of 248 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.8 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle?

    asked by star on February 4, 2011
  42. Physics

    Yah i got another question a large crate is placed on the bed of a truck but is not tied down as the truck accelerates forward the crate slides across the bed until it hits the tailgate explain what causes this i'm completley lost

    asked by Physics on February 2, 2009
  43. Physics

    An airplane is flying with a velocity of 248 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.5 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle θ?

    asked by Cetris on February 28, 2015
  44. phy3

    A 0.01-kg baseball traveling in a horizontal direction with a speed of 11 m/s hits a bat and is popped straight up with a speed of 15 m/s. (a) What is the change in momentum (magnitude and direction) of the baseball?

    asked by opp on March 17, 2012
  45. Physics

    A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 7.10 seconds later.

    asked by Mark on January 28, 2010
  46. Physics

    A gardener holds a hose 0.75m above the ground such that the water shoots out horizontally and hits the ground at appoint 2.0 m away. What is the speed with which the water leaves the hose?

    asked by John Allen on July 19, 2016
  47. trig

    Forces of 15 kg and 10 kg act on a point with an angle of 60◦ between the forces. Find the magnitude of the resultant force (to nearest tenth of a kilogram) and the angle (to the nearest degree) the resultant makes with the 15 kg force

    asked by syed on April 28, 2015
  48. Physics

    A block of mass m is being dragged across the floor by a force F. The coefficient of friction between the block and floor is u. Show that if the block is being accelerated by the force F from rest for a time t, the speed of the block at time t can be found

    asked by Courtney on November 10, 2011
  49. physics

    The coefficients of static and kinetic friction between a 50 kg box and a horizontal surface are 0.64 and 0.17, respectively. (a) What is the acceleration of the object if a 335 N horizontal force is applied to the box? m/s2 (b) What is the acceleration if

    asked by Josh on December 18, 2012
  50. physics

    A large cube (one side measuring 1.0 m) is submerged in water, with the top face of the cube 8.7 m below the surface. Find a) the force exerted by the water on each face of the cube. b) the buoyant force on the cube.

    asked by Anonymous on April 28, 2014
  51. Physics

    How much force does an 88 kg astronaut exert on his chair while sitting at rest on the launch pad? Answer: 860N Now the question: How much force does the astronaut exert on his chair while accelerating straight up at 14 m/s^2? What do you do first, how do

    asked by falcon306 on July 17, 2011
  52. physics

    A 6.0-kg box is raised a distance of 3.0m from rest by a vertical applied force of 80 N. Find (a) the work done on the box by the applied force, (b) the work done on the box by gravity, and (c) the final kinetic energy of the box.

    asked by carrie on February 24, 2010
  53. Physics

    Block A and Block B in the figure below are connected by a string of negligible mass. There is a force on A with a magnitude of FA=20N and a force on B with a magnitude FB=34N in the directions shown in the figure. What is the tension in the string?

    asked by Sam on October 14, 2012
  54. physics

    The coefficients of static and kinetic friction between a 43 kg box and a horizontal surface are 0.72 and 0.20, respectively. (a) What is the acceleration of the object if a 135 N horizontal force is applied to the box? (b) What is the acceleration if the

    asked by Bri on February 23, 2015
  55. Physics Please Check over my answers!

    A passenger in the rear seat of a car moving at a steady speed is at rest relative to *the side of the road a pedestrian on the corner ahead the front seat of the car the wheels of the car A person walks 1 mile every day for excercise, leaving her porch at

    asked by Aliana on January 17, 2012
  56. Physics Please Check over my answers!

    A passenger in the rear seat of a car moving at a steady speed is at rest relative to *the side of the road a pedestrian on the corner ahead the front seat of the car the wheels of the car A person walks 1 mile every day for excercise, leaving her porch at

    asked by Aliana on January 17, 2012
  57. physics

    The mass of the tray itself is 0.182 kg, and its center of gravity is located at its geometrical center. On the tray is a 1.08 kg plate of food and a 0.279 kg cup of coffee. Assume L1 = 0.0590 m, L2 = 0.138 m, L3 = 0.258 m, L4 = 0.381 m and L5 = 0.401 m.

    asked by Katie on March 13, 2012
  58. Chemistry

    When 4.65 g of a nonelectrolyte solute is dissolved in 475 mL of water at 27 °C, the resulting solution exerts an osmotic pressure of 931 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the

    asked by Anon on January 29, 2013
  59. Alegebra

    Can some one please help me with this 3 problems I have a hard time with probabilities I'm studying for my mid-term. Thank you 1) Urn A has balls numbered 1 through 7. Urn B has balls numbered 1 through 5. A ball is selected at random from urn A and then a

    asked by Jessi on September 11, 2009
  60. physics

    A 10.0-kg block is at rest on a horizontal floor. If you push horizontally on the 10.0-kg block with a force of 20.0 N, it just starts to move. (a) What is the coefficient of static friction? b) A 12.0-kg block is stacked on top of the 10.0-kg block. What

    asked by melad on February 17, 2011
  61. physics PLEASE help

    A 5.0-kg block is at rest on a horizontal floor. If you push horizontally on the 5.0-kg block with a force of 10.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 12.0-kg block is stacked on top of the 5.0-kg block. What is

    asked by Julie on February 16, 2012
  62. physics

    A 5.0-kg block is at rest on a horizontal floor. If you push horizontally on the 5.0-kg block with a force of 10.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 12.0-kg block is stacked on top of the 5.0-kg block. What is

    asked by Julie on February 16, 2012
  63. Physics

    On an inclined plane, how does a larger angle of inclination result in a faster speed? I tried working this out by myself using different values for the angle of incline and the same weight - which was just 100N. I found that the frictional force was equal

    asked by Madeleine on May 19, 2015
  64. Physics

    On an inclined plane, how does a larger angle of inclination result in a faster speed? I tried working this out by myself using different values for the angle of incline and the same weight - which was just 100N. I found that the frictional force was equal

    asked by Madeleine on May 19, 2015
  65. Physics

    Tarzan plans to corss a gorge by swinging in an arc form a hanging vine. If his arms are capable of exerting a force of 1400 N on the rope, what is the maximum speed he can tolerate at the lowest point of his swing? his mass is 80 kg and the vine is 4.8 m

    asked by Physics on September 6, 2009
  66. Physics

    A 975 N object is pulled at a constant velocity up an incline with a force of 327 N parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is

    asked by Jeremy on April 12, 2011
  67. Physics

    Why does the force of gravity change the speed of a satellite in an elliptical orbit? 1) The force of gravity is always tangent to the satellite motion. 2)Gravity speeds up the satellite as it moves away and slows it on its return. 3)The force of gravity

    asked by dave on October 7, 2016
  68. Physics

    Why does the force of gravity change the speed of a satellite in an elliptical orbit? 1)The force of gravity is always tangent to the satellite motion. 2)Gravity speeds up the satellite as it moves away and slows it on its return. 3)The force of gravity is

    asked by dave on October 7, 2016
  69. Physics

    Why does the force of gravity change the speed of a satellite in an elliptical orbit? 1)The force of gravity is always tangent to the satellite motion. 2)Gravity speeds up the satellite as it moves away and slows it on its return. 3)The force of gravity is

    asked by dave on October 7, 2016
  70. physics

    A panel is supported on supports a and b. A 60-kg person walks on the board from point a. Despise the deformation of the table A) find its expression for the magnitude of the force exerted by each support in function x of the person B) in what position

    asked by daniela on December 13, 2016
  71. physics

    A panel is supported on supports a and b. A 60-kg person walks on the board from point a. Despise the deformation of the table A) find its expression for the magnitude of the force exerted by each support in function x of the person B) in what position

    asked by daniela on December 13, 2016
  72. physic

    Search: The barrels of the 16 in guns (bore diameter = 16 in. = 41 cm) on the World War II battleship U.S.S. Massachusetts were each 15 m long. The shells each had a mass of 1050 kg and were fired with sufficient explosive force to provide them with a

    asked by Anonymous on October 14, 2010
  73. science grade 11

    A waiter carries a 253g drink a distance of 12m on a horizontal tray at constant speed of 1.1 m/s. A) what work is done by the normal force of the tray on the drink? B) what work is done by the friction force of the tray on the drink?

    asked by Sohaib on January 21, 2017
  74. physics

    A 2.14 kg block is held in equilibrium on an incline of angle q = 67.7o by a horizontal force, F. If the coefficient of static friction between block and incline is ms = 0.314, determine the minimum value of F. Determine the normal force of the incline on

    asked by AB on September 20, 2012
  75. Calculus Physics

    A box and one force vector, F1 is shown. F1 = + 10 N. If the mass of the box is 3 kg, what is the magnitude and direction of a force, F2, that would need to be applied if the box was to have an acceleration of + 2 m/s 2 in the horizontal direction.

    asked by danny on February 18, 2015
  76. Physics graphing

    Im making a graph of magnetic force vs current, after investigating the magnetic force exerted on a current-carrying wire, and how it varies with current, length, magnetic field and angle. How do I know when to use the point (0,0) on the graph?

    asked by Michelle on October 13, 2014
  77. physical sciece

    aA player uses a hockeey stick to incease the speed of a 0.200 kg hockey puck by 6 m /s in 2 seconds. (A)How much dd the hockey puck accelerate? (B)How much force was exerted on the pack? (C)How much force did the puck exert on the hockey stick.

    asked by shantae on March 17, 2011
  78. Physics

    When an 8-lb rifle is fired, the 0.02-lb bullet receives an acceleration of 10^5 ft/s^2 while it is the barrel? (a) How much force acts on the bullet? (b) Does any force act on the rifle? If so, how much and in what direction? (c) The bullet is accelerated

    asked by Trisha on June 22, 2016
  79. Physics for exam

    I can't get this question and its been driving me crazy. I need to know how to do this for my exam. Any help would be appreciated. A golfer is practising his/her swing at a distance of 150m from a house. On the way back to the ground, 5.00 seconds after

    asked by Natalie on June 19, 2006
  80. physics

    A stone with a weight of 5.38 N is launched vertically from ground level with an initial speed of 25.0 m/s, and the air drag on it is 0.269 N throughout the flight. What are (a) the maximum height reached by the stone and (b) its speed just before it hits

    asked by kate on November 29, 2010
  81. physics

    An airplane is flying with a velocity of 252m/s at an angle of 30 degrees with the horizontal. when the altitude of the plane is 2.7km, a flare is released from the plane. the flare hits the target on the ground. what is the angle theta?

    asked by mo on September 23, 2012
  82. physics

    An airplane is flying horizontally with a speed of 1000 km/hr (278 m/s) when it drops a payload. The payload hits the ground 37 s later. (Neglect air drag and the curvature of the Earth. Take g = 10 m/s2.) (a) At what altitude H is the airplane flying?

    asked by kelly on March 4, 2011
  83. physics

    A bullet traveling horizontally at a speed of 350 hits a board perpendicular to its surface, passes through and emerges on the other side at a speed of 230 . If the board is 3.80 thick, how long does the bullet take to pass through it?

    asked by sammy on September 29, 2012
  84. Physics

    1) Seagulls are often observed dropping clams and other shellfish from a height to the rocks below, as a mean of opening the shells. If a seagull drops a shell from rest at a height of 14 m, how fast is the shell moving when it hits the rocks?

    asked by Jackie on October 2, 2017
  85. Calculus and Vectors

    A bald eagle flying horizontally at 48km/h drops it's prey from a height of 50m. a)what is the prey's vertical velocity when it hits the ground? b)when is the vertical speed greater than the horizontal speed?

    asked by Sally on February 27, 2012
  86. Physics

    A force F1 of magnitude 6.90 units acts on an object at the origin in a direction θ = 54.0° above the positive x-axis. (See the figure below.) A second force F2 of magnitude 5.00 units acts on the object in the direction of the positive y-axis. Find

    asked by Jennifer on September 20, 2015
  87. Physics/Science

    A 57-gram tennis ball moving at 70 miles per hour is hit with a 110-gram tennis racquet moving at 60 miles per hour. Which statement best compares the total amounts of mass and energy before and after impact? A. Because the velocities of the ball and

    asked by Klauus on May 10, 2019
  88. Physics(Please answer, thank you)

    How do you determine the ymax? I know you have to use Q which I have values that were given to me as well as vo values but I am not sure what to do with these values. Physics - drwls, Saturday, September 15, 2012 at 1:29am Define your terms. I have no idea

    asked by Hannah on September 15, 2012
  89. pyshics

    A small rock moves in water, and the force exerted on it by the water is given by the equation Fd = kv, where k is a constant. The terminal speed of the rock is measured and found to be 2.0m/s. The rock is projected upward at an initial speed of 6.0m/s.

    asked by Timothy on October 19, 2011
  90. Physical Science

    Hello, I need some help with the following question. Thank You To use your left hand to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you must point your ? A.thumb in the direction of the magnetic

    asked by Mandi on March 23, 2008
  91. Physics

    Two forces, F1 and F2 , act at a point. F1 has a magnitude of 8.80N and is directed at an angle of 64.0 degree above the negative x axis in the second quadrant. F2 has a magnitude of 7.00N and is directed at an angle of 52.8 degree below the negative x

    asked by Poole on September 20, 2008
  92. Physics

    CONICAL SHAFT WITH DISTRIBUTED TORSIONAL LOAD The conical shaft AB is made of steel, with shear modulus G0. The shaft has length L and is free at A (where x=0) and fixed at B (where x=L). The shaft is solid, with a linear taper so that the radius of the

    asked by GaryG on August 25, 2014
  93. Statistic ASAP Please

    Some people believe in the force (yes, like in Star Wars). To test if young Anakin Skywalker has the force with him, he is told that some cards that Yoda can see but Anakin cannot contain a picture of a planet, a lightsaber, a laser rifle, or a spaceship.

    asked by helen on April 3, 2014
  94. physics

    Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor. True The direction of the force on doubly ionized helium atoms (alpha particles) moving at right angles to a

    asked by sally on May 24, 2009
  95. Physics

    A uniform crate with a mass of 16.2 kg rests on a floor with a coefficient of static friction equal to 0.571. The crate is a uniform cube with sides 1.21 m in length. what is the minimum height where the force F can be applied so that the crate begins to

    asked by AfterLife on July 27, 2011
  96. PHYSICS

    An object of mass M = 1,284 g is pushed at a constant speed up a frictionless inclined surface which forms an angle θ = 50 degrees with the horizontal. What is the magnitude of the force that is exerted by the inclined surface on the object? (I'm using

    asked by Mar on October 14, 2010
  97. Physics

    A dockworker applies a constant horizontal force of 73.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 11.5m in a time 5.40s . a.) What is the mass of the block? b.)If

    asked by Mike on February 7, 2014
  98. College Physics

    Box M2 sits atop M1. (M1=25kg M2=15kg). The coefficient of friction between boxes and between M1 and the ground is Uk=.4 and Us=.5. I found that 353N is the maximum force you can apply to box 1 so that box 2 doesn't slip off. Now it asks for the

    asked by Matt on September 24, 2009
  99. Physics

    The horizontal motion of a horizontally launched projectile affects its vertical motion. (FALSE) A missile launches at a velocity of 30.0 m/s at an angle of 30.0* to the normal. What is the maximum height the missile attains? (11.5 m, I'm not very sure) In

    asked by Patrick on May 6, 2009
  100. Probability

    Can someone please help me solve this problem? If the probability of a baseball player's getting it in one time at bat is 0.326, find the probability that the player gets no hits in 4 times at bat. Thank you!

    asked by Anonymous on February 7, 2015