1. Physics

    There is a figure q1= 23 uC and q2= 16 uC. The force on q1 points in the -x direction. q1 is at (0,1) q2 is at (2,0) q3 is at (2,2) What is the magnitude of the force on q1? I am doing this (9*10^9)(23*16)(-4ihat)7^3 where did i go wrong?

    asked by Sammy on August 12, 2009
  2. Exploring Space

    What force musst be overcome to a launch a vehicle into space? Would that force be weight?

    asked by Sara on March 15, 2010
  3. physics

    Find the ratio of the coulomb electrical force to the gravitation force between two electrons .

    asked by Anonymous on November 6, 2017
  4. phy

    9. what is the relationship between the force and distance in an inverse square law? does force= the two charges?

    asked by jennifer on October 17, 2007
  5. science

    Gravitational force =mass x 9.8m/s2 what is the force of a polar bear weighing 1500kg?

    asked by amanda on December 5, 2016
  6. physics

    Two charged dust particles exert a force of 5.3 x 10^-2 N on each other. What will be the force if they are moved so they are only one-ninth as far apart?

    asked by amanda on July 13, 2011
  7. math

    what is the force vector of a lawnmower being pushed at a 60 degree angle and a force of 30 pounds?

    asked by Anonymous on April 27, 2010
  8. Science

    Calculate the resultant of force of 200 N due west and a force of 90 N at 60 degree NW

    asked by Barry on November 28, 2015
  9. physics

    Two point charges exert a 2.50 N force on each other. What will the force become if the distance between them is increased by a factor of 5?

    asked by Justin on August 24, 2013
  10. Road surface

    How does braking force affect the vertical force of moving vehicle? Please show an example!

    asked by Raymond on April 26, 2013
  11. Physical Science

    a net force if 7 N acts on a 7 kg mass over a distance of 5m. How much work did this force accomplish?

    asked by Sheana on December 11, 2010
  12. Coulomb's Law

    Two charges attract each other with a force of 16N. What will be the new force if the distance between them is reduced to 1/2 of its original value?

    asked by AC on January 26, 2016
  13. physics

    two charges attract each other with a force of 1.5 N. what will be the force if the distance between them is reduced to one-ninth of its original value?

    asked by lara on April 25, 2010
  14. physics

    the gravitational force between two object is F . How will this force will change when the distance between them is reduce to half?

    asked by Aishwarya on August 19, 2012
  15. Physics

    Two charges repel each other with a force of 10-6N when they are 10cm apart. when they are brought closer together until they are 2cm apart the force between them becomes?

    asked by Nancy on March 3, 2014
  16. Physics

    Two charged bodies exert a force of 0.415 N on each other. If they are moved so that they are one-third as far apart, what force is exerted?

    asked by Sasha on March 29, 2010
  17. science

    what are the characteristic features of force? http://en.wikipedia.org/wiki/Force i need help

    asked by deep on November 11, 2006
  18. khan

    Force acting between two identical masses is 6.67*10^-11 N...Distance between them is 2m..calculate the magnitude of force .

    asked by Marisha on February 26, 2016
  19. Physics

    Two charged dust particles exert a force of 3.8 10^-2 N on each other. What will be the force if they are moved so they are only one third as far apart? ________N

    asked by Dar on March 22, 2010
  20. physics

    Two spacecraft in outer space attract each other with a force of 4 N. What would the attractive force be if they were one-eighth as far apart?

    asked by Jessica on October 8, 2016
  21. physics

    A spring of force constant k is cut into two equal parts. what is the force of each half?

    asked by tharani on December 17, 2009
  22. physics

    Two charged bodies exert a force of 0.225 N on each other. If they are moved so that they are one-third as far apart, what force is exerted?

    asked by Donna on March 23, 2014
  23. physical science

    the greatest of the 4 forces would be strong force not electromagnetic force - I am a little confused from the reading

    asked by liz on November 3, 2007
  24. Physics URGENT!!!

    two charges attract each other with a force of 2.5 N. What will be the force if the distance between them is reduced to one-ninth its orginal value?

    asked by Will on September 18, 2007
  25. physics

    how do i find the net force 30-N and a force 20 to show forces opposite and both in the same diection?

    asked by bobby h on October 12, 2012
  26. Physics

    could you tell me how to solve for accerating force above friction force? my problem was down below the topic science again

    asked by Physics on March 18, 2009
  27. Engineering Mechanics

    A force of 100 N is acting at a point Resolve this force along 300 and 400

    asked by Saif on April 22, 2010
  28. physics

    A man pushes a packing case of total mass 40kg across a floor at a constant speed of 0.5m/s by exerting a horizontal force of 100N what is the resultant force on the case how big was the force of friction acting on the case how much work was done in 3s

    asked by gngraqn on April 11, 2013
  29. Physics

    A 60kg man standing on a stationary 40kg boat throws a 0.2kg ball with a velocity of m/s. Assuming there is no friction between the man and the boat, what is the speed of the boat after the man throws the ball?

    asked by Sami on March 2, 2016
  30. I guess this is physics related?

    What is the biggest source of error in measuring the acceleration of a ball down a ramp? knowing the length of the ramp accurately measuring the time knowing the height of the ramp knowing the mass of the ball****

    asked by Robert on December 29, 2014
  31. ELA

    Is this all correct where the commas are and am I using the right words? 1. Yes, Robin raced after a fly ball. 2. Cindy always worries about hitting the ball. 3. Alexis, Cindy, and Robin score runs every day. 4. Mark guesses we will win the tournament. 5.

    asked by Jaycee on December 8, 2011
  32. physics

    Suppose I throw a ball straight up at an initial speed of 10 m/s. Suppose I'm 2 meters tall (about 6 feet) and the ball leaves my hand at 2 meters from the ground. How fast is it going at its highest point? How fast is it going on its way back down at 2

    asked by Sarah on September 21, 2010
  33. Algebra

    The height h (in feet) of an underhand volleyball serve can be modeled by h=−16t2+30t+4, where t is the time in seconds. After how many seconds is the ball 16 feet above the ground? Round your answers to the nearest tenth. The ball is 16 feet above the

    asked by Kevin Chau on February 10, 2018
  34. Chemistry

    1. A piece of rectangular wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams. What is the density of the wood? Would the piece of wood float in water? 2. I threw a plastic ball in the pool for my dog to fetch. The mass of the ball was

    asked by Perrie on July 8, 2013
  35. Math

    The Longhorns punted the ball from the 5-yard line. The punt was caught at the 41-yard line and returned to the 19-yard line. The ball did not cross the 50-yard line. What was the net yardage on the play?

    asked by Kelly on April 3, 2012
  36. physics

    You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 6.4 m/s.When the tennis ball is at a height of 2.2 m above the ground, what is its speed?

    asked by tori on October 17, 2016
  37. physics

    A ball with radius 12cm rolls on a level surface, and the translational speed of the center of mass is 0.35 m/s. What is the angular speed about the center of mass if the ball rolls without slipping?

    asked by bob on November 16, 2014
  38. physics

    ajuggler tosses a ball up in the air with initial speed u. at the instant it reaches the maximum height H, he tosses a second ball with the same initial speed the two balls collide at what height

    asked by sahana gr on September 9, 2012
  39. Science

    Two crates are submerged under water. The crates are identical in size, but Crate A is filled with iron and Crate B has only air inside. Which crate has a greater buoyant force acting on it?  1) Crate A has a greater buoyant force acting on it because it

    asked by Klauus on April 12, 2019
  40. physics

    A small steel ball bearing with a mass of 28.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.25 m. Calculate the horizontal distance the ball would travel if the same spring

    asked by Emily on September 12, 2010
  41. physics

    A small steel ball bearing with a mass of 28.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.25 m. Calculate the horizontal distance the ball would travel if the same spring

    asked by Emily on September 12, 2010
  42. Physics please help!!

    High speed stroboscopic photographs show that the head of a 188 g golf club is traveling at 52.5 m/s just before it strikes a 45.5g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 44.0 m/s. Find the speed

    asked by Megan on February 14, 2011
  43. Math

    a punter kicked the football into the air with an upward velocity of 62 ft/s. its height in feet after t seconds is given by the function h = -16t^2 + 62t +2. What is the maximum height the ball reaches? How long will it take the football to reach the

    asked by Amy on March 8, 2015
  44. Physic

    A steel ball of diameter 0.2mm, falls with a terminal velocity of 0.0029m/s through oil in a relatively large jar.Calculate the viscosity of oil, assuming the densities of the oil and the ball are to be 7200 and 420kg/m^3 respectively .if the radius is

    asked by Skyboy on December 18, 2015
  45. Physics please help im DESPERATE

    A small steel ball bearing with a mass of 17.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.23 m. Calculate the horizontal distance the ball would travel if the same spring

    asked by Robert on February 8, 2013
  46. Math(Please Help Assignment Due Today)

    Four balances are shown where the two sides of each contain exactly the same amount of weight. The first balance has 4 squares, 1 triangle and 1 ball on the left side, right side has 2 diamonds. The second balance has 1 triangle and 1 square on the left

    asked by Heaven on May 31, 2016
  47. Math

    Four balances are shown where the two sides of each contain exactly the same amount of weight. The first balance has 4 squares, 1 triangle and 1 ball on the left side, right side has 2 diamonds. The second balance has 1 triangle and 1 square on the left

    asked by Heaven on May 31, 2016
  48. physics

    1. A force of 720N stretches a certain spring a distance of 15 cm. What is its force constant? If a 60-kg mass is hung on it, how far will it stretch?

    asked by black n' white on January 23, 2013
  49. trig

    Two forces of 5 lb. and 14 lb. act on a body at right angles to each other. Find the angle their resultant force makes with the force of 14 lb

    asked by Anonymous on June 20, 2012
  50. PHYSICS. HELP!my work

    two force of 20N and 34N act on a body in such a way that they make an angle of 35 with each other. find the resultant of the two force

    asked by shemsa on April 5, 2016
  51. physical

    What is the reaction force to an action force of 750 N exerted by Earth on an orbiting communications satellite?

    asked by Anonymous on October 27, 2011
  52. physics

    How much applied force is needed to accelerate a 2.0 kg block of wood at 4.0m/s^2 along a rough table, against a 10 N force of friction?

    asked by Melissa on March 25, 2012
  53. Science

    Force 4n,3n and 12n act at a in point mutually perpendicular directions .The magnitude of resultant force is

    asked by Rakesh on August 27, 2016
  54. pysics

    a force of 4N at 30 degree from another force 5Nwk is pointing east. find the resistance of the two forces using parallelogram

    asked by stanley on February 23, 2013
  55. Physics

    What force of friction would be felt between a 5 kg sled and the ground if a 20 N force is needed to cause it to accelerate at a rate of 1.3 m/s squared?

    asked by Lacey on January 27, 2013
  56. physics

    a sled is being pulled to the left by 5 dogs, each dog pulling with 6 newtons of force what is the net force

    asked by lauren on January 15, 2010
  57. Physics

    A force of 44.0 N accelerates a 5.0-kg block at 6.3 m/s2 along a horizontal surface. (a) How large is the frictional force? (b) What is the coefficient of friction?

    asked by Jeff on November 17, 2012
  58. 12th grade Physics

    the force between two charges is 20.0 N. if one charge is doubled, the other is tripled, and the distance between them is halved, calculate the resultant force between them.

    asked by Sasha on December 15, 2009
  59. physics

    What equation do I use to find this? Thanks The x and y components of a certain force are measured and found to be Fx = 68 ± 3N and Fy = 42 ± 2 N, respectively. Calculate the error associated with the magnitude of this force?

    asked by Timothy on September 26, 2016
  60. Science

    If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity?

    asked by Audrey on October 2, 2011
  61. building science

    how do we calculate the equilibrant if the upward force is 450N and the downward force is 750N acting on the same line?

    asked by selvan on April 5, 2013
  62. physics

    A force of 240 lb. is resolved into forces at right angles to one another, the angle of F2 being 56 degrees from the 350 lb. force. Find F2.

    asked by dcw on March 18, 2010
  63. physics

    A horizontal force of 25 newtons pushes a box a distance of 30 meters across the floor. How much work is done by the force?

    asked by stephanie on November 23, 2010
  64. Physic

    In the Coulomb force equation, does the magnitude of the force increase as the distance between the charged objects decrease ? Why or why not?

    asked by Aliyaa on January 27, 2014
  65. Physic II

    In the Coulomb force equation, does the magnitude of the force increase as the distance between the charged objects decrease ? Why or why not?

    asked by Jale on January 26, 2014
  66. criminal justice

    the amount of force used in self -defense of another must, under the circumstances that exist, be: a: reasonable, B: correct C: identical D: less than the force being used by the aggressor I think it's D

    asked by candy on October 5, 2012
  67. Physics

    A man weighing 700 N lifts a 50.0 N object 2.0 m high. He uses a lever and with a force of 10.0 N. What is the resistance force

    asked by Pat on February 7, 2012
  68. PHYSICS

    Suppose the force of friction on a sliding object is 25 N. What is the force needed to maintain a constant velocity?

    asked by Michelle on October 12, 2011
  69. physics HELP

    Im having problems getting the magnitude of the force in the problem i asked below i got the frictional and normal force please help me put these equations together

    asked by Anthony on October 31, 2012
  70. Physics

    Two charges q1 and q2 when separated by a distance r1 = R produce a force F1on each other. If the separation is increased to r2 = 2R, what is the new force F2 in terms of F1?

    asked by Alex on February 8, 2011
  71. Physical Science

    Need help on this one as well: How can you predict whether an object will float or sink in a fluid if you don't know the force of its weight or the buoyant force? Thanks! -MC

    asked by mysterychicken on March 28, 2009
  72. Science

    A swimmer that pushes the water back with feet and arms what is the reaction force? What is the action force?

    asked by BUBBLES on February 2, 2015
  73. physics

    1. A force of 720 N stretches a certain spring a distance of 15 cm. What is its force constant? If a 60-kg mass is hang on it, how far will it stretch?

    asked by 4a on March 13, 2013
  74. Physics

    A spring of natural length 1.50m by a force of 0.80N,. What will it be its extension when the allied force is 3.20N

    asked by Kenedy fabian on September 2, 2017
  75. calculus

    Two forces of 7 lb. and 14 lb. act on a body at right angles to each other. Find the angle their resultant force makes with the force of 14 lb.

    asked by Jasmine on February 13, 2015
  76. Physics

    How do you calculate the resultant force of 2 soccer balls, kicked at the same time, one with a force of 60N and the other 85N?

    asked by Darlene on November 6, 2012
  77. Physics

    Suppose the force of friction on a sliding object is 25 N. What is the force needed to maintain a constant velocity?

    asked by Michelle on October 13, 2011
  78. physics

    a net force of 2.50*10^3 n on a rocket of mass 1.70*10^3kg how long does it take this force to increase the rockets velocity from 0 m/s to 2.15*10^2 m/s

    asked by Kdunc on February 13, 2012
  79. Physics

    please check these answers for me When an object is moving with uniform circular motion, the centripetal acceleration of the object a. is circular b. is perpendicular to the plane of motion c. is zero d. is directed toward the center of motion D What is

    asked by teamjakeward on February 15, 2009
  80. Physics

    In calculating the force of gravity between two objects, if the mass of one objects increased by 4 and the other by 2, how many times would the force of gravity increase? Ok well Im horrible at physics but the way I understood it was that you would take 4

    asked by Lynn on May 4, 2008
  81. Physics

    A lead ball is dropped into a lake from a diving board 4.50 m above the water. After entering the water, it sinks to the bottom with a constant velocity equal to the velocity with which it hit the water. The ball reaches the bottom 4.40 s after it is

    asked by GraceW1 on September 8, 2015
  82. physics plz

    Can you help please Question1: A car makes a banked turn on a "real" road (meaning you can not ignore friction), which of the following are forces that act on the car: (for full credit you must select ALL that are true) A)centripetal force B) friction C)

    asked by emiie on May 4, 2012
  83. physics

    The chimney of a stationary toy train consists of a vertical spring gun that shoots steel balls a meter or so straight into the air – so straight that the ball always falls back into the chimney. If the train is moving, under which condition will the

    asked by Annonymous on October 23, 2015
  84. physics

    The chimney of a stationary toy train consists of a vertical spring gun that shoots steel balls a meter or so straight into the air – so straight that the ball always falls back into the chimney. If the train is moving, under which condition will the

    asked by Annonymous on October 23, 2015
  85. physics

    High-speed stroboscopic photographs show that the head of a golf club of mass 230g is traveling at 56.1m/s just before it strikes a 44.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.4m/s. Calculate

    asked by faith on October 24, 2017
  86. physics

    The figure shows a 0.3 kg baseball just before and just after it collides with a bat. Just before, the ball has velocity of magnitude 11.4 m/s and angle = 31.4 degrees. Just after, it is traveling directly upward with velocity of magnitude 9.00 m/s. The

    asked by Alex on March 25, 2013
  87. Physics

    High-speed stroboscopic photographs show that the head of a golf club of mass 231g is traveling at 59.0m/s just before it strikes a 47.1g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 44.3m/s. Calculate

    asked by zhang135 on October 13, 2014
  88. physics

    A basketball player is standing on the floor 10.0 m from the basket as in Figure P4.50. The height of the basket is 3.05 m, and he shoots the ball at a 40.0o angle with the horizontal from a height of 2.00 m. (a) What is the acceleration of the basketball

    asked by saad on March 16, 2013
  89. physics

    A ball of mass 100 g travelling with a velocity of 100 m/s collides with another ball of mass 400 g moving at 50 m/s in the same direction. If they stick together, calculate: (i) their common velocity (ii) loss of enery and hence state the type collision

    asked by somay on May 15, 2016
  90. physics

    High-speed stroboscopic photographs show that the head of a golf club of mass 230g is traveling at 56.1m/s just before it strikes a 44.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.4m/s. Calculate

    asked by lyn on October 24, 2017
  91. Science

    A football is thrown to a moving football player. The football leaves the quarterback’s hands 1.6m above the ground with a speed of 14 m/s at an angle 30o above the horizontal. If the receiver starts 11 m away from the quarterback along the line of

    asked by Santo on February 25, 2019
  92. physics

    High-speed stroboscopic photographs show that the head of a golf club of mass 230g is traveling at 56.1m/s just before it strikes a 44.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.4m/s. Calculate

    asked by Jelaa on October 24, 2017
  93. physics

    a window with a smooth hinge at the top is held open at an angle 30 degrees to the vertical by a horizontal force applied to the center of it lower edge. the force of gravity on the window is 3kgf acting through its mid point. draw a scale diagram of the

    asked by Moses on October 10, 2014
  94. Physics

    An archer's bow applies a force to an arrow over a distance of 19cm, while firing it vertically upwards. If the arrow achieves a speed of 8.0m/s and the efficiency of the bow is 75%, determine the average force applied to the arrow by the bow. So far I

    asked by Pablo on January 28, 2015
  95. physics

    1. what happens to the force required for an object to maintain circular motion if the period is halved (goes twice as fast around the circle)? a) force doubles b) force quadruples c) force is halved d) force is quartered 2. In a pulley problem involving

    asked by Liz on July 1, 2014
  96. Physics..up for a challange?

    Determine if the following physical equations are homogeneous a) P=FV c)F= mV^2 ---- r b) F=mV^2 (divided by r(radius) I assume you mean dimensionally homogenous. a) Power is work/time or force*distance/time. On the right side, force is velocity is

    asked by Kim on October 1, 2006
  97. physics

    A 10-KG block is pulled along a rough horizontal floor by a 12-N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the

    asked by Bolo on October 8, 2010
  98. physics

    A 10-KG block is pulled along a rough horizontal floor by a 12-N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the

    asked by Bolo on October 9, 2010
  99. Physics

    A 10-KG block is pulled along a rough horizontal floor by a 12-N force acting at a 30 degrees angle with respect to the horizontal. The block accelerates at 0.1 m/s2. Calculate A....... the weight of the block B...... the force of friction acting on the

    asked by Esthere G on October 9, 2010
  100. Science

    Why does the Northern Hemisphere experience seasons? A. Earth is closer to the Sun during one half of the year than it is during the other half of the year. B. Sunlight hits the Northern Hemisphere in varying amounts as Earth rotates on its axis. C.

    asked by SFA on October 26, 2018