1. Physics

    At the top of a frictionless inclined plane, a .50 kilogram block of ice possesses 6.0 joules of gravitational potential energy with respect to the bottom of the incline. After sliding halfway down the plane, the block's gravitational potential energy is?

    asked by Gonzalez on January 16, 2012
  2. physics

    Toolkit Block A slides down a ramp whose slope is 45°. An identical block B slides down a ramp whose slope is 60°. Both blocks start at a height of 2 meters. Compare the kinetic energies (KE) of the blocks just before they reach the bottom, assuming

    asked by Michael on August 2, 2011
  3. physics

    A block of mass m = 350 g is released from rest and slides down a frictionless track of height h = 58.9 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring

    asked by Jamila on November 2, 2014
  4. please help me!! physics

    The masses of blocks A and B are 4.5 kg and 3.7 kg respectively. The blocks are initially at rest and are connected by a massless string passing over a massless, frictionless pulley. The system is released from rest. a. What is the acceleration of the

    asked by Nickoli on November 24, 2013
  5. physics

    The masses of blocks A and B are 4.5 kg and 3.7 kg respectively. The blocks are initially at rest and are connected by a massless string passing over a massless, frictionless pulley. The system is released from rest. a. What is the acceleration of the

    asked by Nickoli on November 25, 2013
  6. Physics

    A 500 g block is released from rest and slides down a frictionless track that begins h = 1.70 m above the horizontal, as shown in Figure P13.56. At the bottom of the track, where the surface is horizontal, the block strikes and sticks to a light spring

    asked by Anonymous on December 5, 2010
  7. PHYSICS*****

    A block of mass m = 300 g is released from rest and slides down a frictionless track of height h = 59.4 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring

    asked by Steve on March 22, 2012
  8. Physic

    Two blocks, m1 = 4 kg and m2 = 2 kg, are in contact with each other and are on a horizontal surface for which the coefficient of kinetic friction is 0.1. A 34 N horizontal force acts on block 1, making both blocks move in the direction of block 2. 34N -->

    asked by Anonimus on October 23, 2015
  9. Physics

    A block of mass m = 800 g is released from rest and slides down a frictionless track of height h = 57.0 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring

    asked by Jake on October 24, 2014
  10. Physics

    Your teacher placed a 4.5 kg block at the position marked with a “ +” (horizontally, 0.5 m from the origin) on a large incline outlined on the graph below and let it slide, starting from rest. Find the horizontal distance from the bottom (right-hand)

    asked by Amanda on November 15, 2014
  11. Physics

    If the co-efficient of static friction for a 5 kg rubber block is 0.3 how much more force is required to lift the block than to start it sliding? I worked out force to get it sliding is 14.7 N (5*9.8*.3) but not sure about the upward force to lift it.

    asked by CC on April 1, 2009
  12. Physics

    A block of mass m = 3.40kg and charge q = 1.50C is on an incline plane that makes an angle è = 33.0o with the horizon. An applied electric field is parallel with the incline as shown in the above diagram. What must the value of the applied electric field

    asked by Tim on January 17, 2013
  13. physics help

    A block of mass 5 kg is place on a table top.it is attached to a mass piece of 2kg by a light string that passes over a frictionless pulley.the table top exerts a frictional force of 7 N on the block. calculate the tension in the string.

    asked by happy on October 11, 2015
  14. Physics

    Block A, with a mass of 26 kg, rests on a 38° incline. The coefficient of kinetic friction is 0.46. The attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, with a mass of 37 kg, is attached to

    asked by Ashraf on April 2, 2016
  15. Keyboarding

    What is the main difference between block letter style and modified block letter style?

    asked by Lindsey on June 24, 2008
  16. Math

    1. In order to collect data on the signal strengths in a neighborhood, Briana must drive from house to house and take readings. She has a graduate student, Henry, to assist her in the task. Briana figures it would take her 12 hours to complete the task if

    asked by Angela on November 4, 2017
  17. physics

    A 1.9- block slides down a frictionless ramp, as shown in the figure. The top of the ramp is = 2.1 above the ground; the bottom of the ramp is = 0.40 above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance away.

    asked by meera on July 2, 2010
  18. Physics

    Instead of the frictionless wheel in problem 7, imagine that the rope is tied to a frictionless pulley with radius R but an unknown moment of inertia. If the pulley always has half as much kinetic energy as the block, what must be its moment of inertia?

    asked by Matt on November 17, 2015
  19. physics

    A 1.9 kg block slides down a frictionless ramp, as shown in figure 8-28. The top of the ramp is 1.5 m above the ground; the bottom of the ramp is .25 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance d away.

    asked by tony on October 20, 2010
  20. physics

    Two blocks of masses m and M [M = 4.23m] are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord holding them together is burned, after which the

    asked by vanessa on January 23, 2011
  21. Fast Physics Help

    I have an image but I can't post it because it is a website. block 1 of mass m1 slides along an x-axis on a frictionless floor with speed of v1i=4.00 m/s. Then it undergoes a one dimentional elastic collision with stationary block 2 of mass m2=.500m1.

    asked by Krystal on December 8, 2006
  22. Math Riddle

    In a little town in West Michigan lives a math professor, who hears one day that the barber has three children. So, on the next visit to the barber, the professor casually inquires, "I have heard you have three children, is that right?" "Yes!" says the

    asked by Tyler on September 22, 2007
  23. College Math

    A block with a mass of m = 31 kg rests on a frictionless surface and is subject to two forces acting on it. The first force is directed in the negative x-direction with a magnitude of F1 = 11 N. The second has a magnitude of F2 = 22.75 N and acts on the

    asked by John on October 9, 2014
  24. word problem

    The half life of cesium-137 is 30 years. Suppose we have a 10-g sample. a)Find a function that models the mass remaining after t years. b)How much of the sample will remain after 80 years? c)After how long will only 2 g of the sample remain? Thanks (a)

    asked by Jen on February 14, 2007
  25. mit physyscs

    A block of mass 2 kg is initially at rest on a horizontal surface. At time , we begin pushing on it with a horizontal force that varies with time as , where 0.6 N/s . We stop pushing at time s [ for ]. (a) First, assume the surface is frictionless. What is

    asked by juanpro on December 6, 2013
  26. physics

    a 4.0kg block of wood is pulled along a horizontal ground from rest and a force of 15N is required to produce acceleration of 2.0metres per second squared . what should the magnitude of the force be in order to pull the block of wood at constant speed of

    asked by Nicole on August 22, 2018
  27. Science-Physics

    As shown below, a 2.00 kg mass is connected to an unknown mass m via a massless rope and a massless, frictionless pulley. The mass m is on a ramp angled 20 degrees above the horizontal. The coefficients of kinetic and static friction are μk=0.35 and

    asked by Justin on May 13, 2016
  28. Physics

    A table can be modeled as a flat block supported by four identical legs. If the mass of the top block is 10 kg and each leg is a uniform rod with height of 1m and mass of 5 kg. Find the gravitational potential energy of the table. Take the ground as the

    asked by Ho on March 10, 2014
  29. physics

    Block A, with a mass of 50 kg, rests on a horizontal table top. The coefficient of static friction is 0.40. A horizontal string is attached to A and passes over a massless, ideal pulley as shown. What is the smallest mass of Block B that will start A

    asked by santoki on March 22, 2014
  30. ag

    which of the following determines who holds the position of speaker of the house? a the president b the house c the senate d the joint houses of congress

    asked by adrian on December 20, 2013
  31. government

    which of the following determines who holds the position of speaker of the house? a the president b the house c the senate d the joint houses of congress

    asked by john on April 3, 2013
  32. government

    which of the following determines who holds the position of speaker of the house a. the president b. the house c. the senate d. the joint houses of congress b

    asked by jere on January 16, 2008
  33. math,

    "The construction of a lunatic asylum costs 6 million marks. How many houses at 15,000 marks each could have been built for that amount?"

    asked by Anonymous on December 15, 2012
  34. physics

    A 1.80-kg block slides down a frictionless ramp.The top of the ramp is h1 = 1.21 m above the ground; the bottom of the ramp is h2 = 0.256 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance $d$ away. Calculate

    asked by Ted on March 5, 2014
  35. Physics

    A 300 g block on a 54.0 cm -long string swings in a circle on a horizontal, frictionless table at 85.0 rpm . What is the speed of the block? Express your answer with the appropriate units. What is the tension in the string? Express your answer with the

    asked by Chewy on February 26, 2018
  36. Algebra

    Let x equal the age, in human years, for a dog that is 2 years old or older. For each of your chosen breeds, write an expression to model its age in dog years. [Hint: Use (x - 2) in each expression.] These are the dog years: 2yrs: 23 yrs old 3yrs: 27 yrs

    asked by Brooklin on December 22, 2015
  37. Math

    A woman is 45 years old. Her daughter is 12 years old.How many years it takes until the daughter is half as old as her mother?

    asked by Al Mijar on July 19, 2017
  38. math

    one half of jeans age two years from now plus one third of her age three years ago is twenty years. how old is she now?

    asked by kath on February 19, 2017
  39. Maths

    Find the value of 10000 in 10 years. The investment earns 8% for four years and then earns 4% for the remaining six years

    asked by Emma on December 2, 2018
  40. Algebra

    6 YEARS AGO, JOE WAS 2 YEARS MORE THAN 5 TIMES AS OLD AS HIS DAUGHTER. SIX YEAS FROM NOW, HE WILL BE 11 YEARS MORE THAN TWICE AS OLD AS SHE WILL BE. HOW OLD IS JOE?

    asked by JOHN on April 18, 2018
  41. Calc

    Set up an exponential function to model each real world situation then use it to find the requested values. The half-life of Carbon 14 is about 5700 years. You begin with 800 grams of this isotope. 1) Function: 2) How much Carbon 14 is there after: a)

    asked by Issac on November 19, 2015
  42. statistics

    I don't know where to start with this one. What is the formula and how do I go about answering this? Question: If one of the 255 subjects is randomly chosen, what is the probability that the person prefers orange juice, given they are over 40? Round your

    asked by Looking for someone to check my answer on March 16, 2010
  43. History

    Write a sentence about the role, job, postition, qualification, checks and balances, and/or amendments having to do with the job of the presidency. i got the following.... can't think of others! P-President must be atleast 35 years old, 14 years resident

    asked by amanda on November 17, 2008
  44. math

    Suppose a young couple deposits $700 at the end of each quarter in an account that earns 7.1%, compounded quarterly, for a period of 6 years. After the 6 years, they start a family and find they can contribute only $200 per quarter. If they leave the money

    asked by cant figure this out :( on April 30, 2011
  45. Algebra

    I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow increasingly confused. How do I begin to solve this problem? In 1993 the life expectancy of males in a certain country was 71.7 years.

    asked by H on January 7, 2010
  46. math

    I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow increasingly confused. How do I begin to solve this problem? In 1993 the life expectancy of males in a certain country was 71.7 years.

    asked by H on January 7, 2010
  47. Physics

    Hello im kinda new here and hoping someone can help me with this energy conservation question (I believe). A 2.10g- bullet embeds itself in a 1.30kg - block, which is attached to a spring of force constant 770 N/m . 1) If the maximum compression of the

    asked by Charles on November 19, 2009
  48. PHYSICS

    a 1kg block is executing simple harmonic motion of amplitude 0.1m on a smooth horizontal surface under the restoring force of a spring of spring constant 100N/M.A block of mass 3kg is gently placed on it at the instant it passes through the mean position

    asked by CHIKIRSHU on December 24, 2009
  49. Math

    Kelly makes fruit juice each morning. She uses 2 1/3 pints of strawberries and 1 2/5 pints of grapes in her juice. If she doubles her recipe, how many more points of strawberries than pints of grapes will she use?

    asked by Sam on May 14, 2015
  50. Economics calculation help

    Kelly total income last year was $24,000, but she could deduct $12,000 for various reasons. How can I calculate; If she had to pay 15% of her taxable income in federal income tax, what was her total tax payment? So I did 12,000 x .15 and got 1800, but I

    asked by Henry on December 4, 2014
  51. math

    Mr. Kelly bought 8 dozen hot dogs for the third grade picnic. His pet dog broke into the groceries and ate 14 dogs. If each picnic guest eats one hot dog, how many people can still have a hot dog?

    asked by Renee on December 11, 2018
  52. physics

    a bullet of mass 0.06kg is fired into a block of wood. if the bullet is moving at 330 m/s as it enters the block and takes 0.15m to stop, find: A) the avg force required to stop the mullet b) the impulse exerted by the wood on the bullet c)change in

    asked by kin on March 25, 2008
  53. Physics AP

    So there are two blocks that are connected over a light frictionless pulley. Block A has a mass of 2 kg on a frictionless surface while block b has a mass of 1 kg that hangs freely. It asks for speed, change in speed, and tension. I know that tension can

    asked by Jelly on December 15, 2014
  54. physics

    A 25.5- kg block (m1) is on a horizontal surface, connected to a 5.7- kg block (m2) by a massless string as shown in the Figure. The pulley is massless and frictionless. A force of 239.3 acts on m1 at an angle of 32.1 . The coefficient of kinetic friction

    asked by Chris on March 3, 2014
  55. phscology

    Juanita is 45 years old. She has been married for 20 years and has three children. She has been employed as a retail store manager for many years. Recently, she notices that she is having a hard time reading product lists, receipts, and other documents at

    asked by Khala on July 1, 2015
  56. Math

    Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

    asked by Fatima on August 7, 2012
  57. Math

    Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

    asked by Elizabeth on July 19, 2014
  58. physics

    A block of mass m= 3 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=βt2, where β= 0.6 N/s2. We stop pushing at time t1=5 s [F(t)=0 for t>t1]. (a) First, assume

    asked by socorro on December 9, 2013
  59. physics

    1) Suppose that a runner on a straight track covers a distance of 1 mile in exactly 4min. what was its average velocity in (i) mih-1 (iii) cms-1 (ii) fts-1 (iv) kmh-1 2) A bullet of mass 10g traveling horizontal at a speed of 100 ms-1 embeds itself in a

    asked by matrixxavier on July 25, 2008
  60. Physics

    A block of mass m = 4.30 kg slides along a horizontal table with speed v0 = 8.50 m/s. At x = 0 it hits a spring with spring constant k = 31.00 N/m and it also begins to experience a friction force. The coefficient of friction is given by μ = 0.150. How

    asked by Olivia on October 5, 2014
  61. Grammar

    Rives the paragraph below to create shorter, more direct sentences. Years ago, when most of today's model railroaders were still growing up, the toy world offed a number of fantastic electric train sets that included engines with real steam and whistles

    asked by Anonymous on March 6, 2013
  62. Physics

    At the instant a race began, a 60-kg sprinter exerted a force of 669-N on the starting block at a 24 angle with respect to the ground. If this force was exerted for 0.44-s, with what speed (in m/s) did the sprinter leave the starting block?

    asked by wanda on September 17, 2017
  63. physics

    A object weighing 0.6netron is hung for an spiral spring and causes it to extend by 6.0cm the object is removed and a block of wood replacing it causes the spring to extermely 10.0cm what is the weight of the block of wood

    asked by Ajeh cecilia on May 18, 2017
  64. math

    1. The amount Rs 2100 became Rs 2352 in 2 years at simple interest. If the interest rate is decreased by 1%, what is the new interest? 2. My grandfather was 9 times older than me 16 years ago. He will be 3 times of my age 8 years from now. Eight years ago,

    asked by adam on November 19, 2015
  65. mathematics

    Mr Sandler deposits a lump sum into an account now to allow for withdrawals when each of his three children starts tertiary education. He calculates that he will need R30000 for the first withdrawal in 5 years time, R32500 for the second withdrawal 2 years

    asked by Ayaana on August 16, 2016
  66. Financial Acc & Reporting

    Archive bhd acquired a franchise on finance lease. it is required to pay 200000 per annum in advance for five years. the implicit interest rate is 10%. the franchise could be bought for 800000. the legal life is five years but can be renewed at 5000 for

    asked by Nurul on July 30, 2016
  67. physics

    bullet of mass 15 gm is shot horizontally into a 15 kg block of wood attached to a spring of spring constant 1000 N/m. The bullet remains inside the block after impact. The force of the impact compresses the spring 10 cm. What is the velocity of the

    asked by Jd on December 2, 2012
  68. Physics

    A bullet with a mass of 0.01kg is fired horizontally into a block of wood hanging on a string. The bullet sticks in the wood and causes it to swing upward to a height of 0.1m If the mass of the wood block is 2kg, what is the initial speed of the bullet?

    asked by Amanda on October 11, 2010
  69. American History

    Under the Articles of Confederation, the Confederation Congress was the primary governing body; it consisted of __________ houses(s) in which each state had one vote.

    asked by Bryce on July 8, 2018
  70. statistics

    The probability that a house will develop a leak is 5%. If 20 house holds are randomly selected, what is the mean number if houses that developed leaks?

    asked by Anonymous on April 24, 2012
  71. physics essay question

    If you fire a bullet through a block of wood, it will slow down as it passes through the block and emerge at less than its initial speed. If you shine light on a pane of glass, it will slow down as it travels through the glass, but reemerge at light speed.

    asked by jess on June 12, 2007
  72. Steve look i have corrrected it help plz it urgent anyone plz

    Last year kemi who happens to be my sister was 2wice as old as my lovely brillant primary school friend femi,last three years when i was two less than femi age now.the sum of kemi age next 9years and femi age now and my age three year will be equal to

    asked by Collins on October 19, 2015
  73. Physics

    Hi, I've been having issues with solving this problem. Could anyone help? Two blocks, of masses M = 2.0 kg and 2M are connected to a spring of spring constant k = 215 N/m that has one end fixed, as shown in the figure below. The horizontal surface and the

    asked by Jack on March 21, 2010
  74. Mechanics

    A 5kg steel block slides down a vertical wooden wall while you push on it with a force F at 40° to the horizontal.The coefficient of kinetic friction between the sliding surfaces is 0.7.What size of force F is required to apply to cause the block to slide

    asked by Modjadji on January 3, 2017
  75. Language Arts

    How do I find out what a block style letter, and what a semi-block style letter is, and how do I see a picture of it? Here are some good illustrations and explanations: http://englishplus.com/grammar/00000150.htm

    asked by Jolena on April 17, 2007
  76. Dynamics of Rigid Bodies

    The system of blocks A and B and two pulleys C and D is assembled as shown in the figure. Neglecting friction in and the mass of the pulleys, and assuming that the whole system is initially at rest, determine the acceleration of block A. The coefficient of

    asked by Anonymous on April 10, 2013
  77. Statistics

    Use the multiple regression equation to predict a persons salary. Assume that the variable A is the number of years of college. Assume that the variable B is the number of years of experience. Suppose the person has 7 years of college and 3 years of

    asked by Jacob on May 21, 2011
  78. Statistics

    Use the multiple regression equation to predict a persons salary. Assume that the variable A is the number of years of college. Assume that the variable B is the number of years of experience. Suppose the person has 7 years of college and 3 years of

    asked by Scott on May 21, 2011
  79. Math - Exponential Decay

    Radium decays exponentially. Its half-life is 1,690 years. How long will it take for a 50-gram sample of radium to be reduced to 5 grams? 1/2P = Pe^(-1690k) (ln1/2)/(-1690) = k 4 x 10^-4 = k 5 = 50e^-kt ln0.1 = -kt ln0.1/-k = t 5,630 years = t ...but

    asked by Anonymous on January 25, 2009
  80. Sampling Distribution

    Sampling Distribution Complete solutions and illustrations are required. 2.In a study of life expectancy, it was found that the mean age at death in the Philippines was 72 with a standard deviation of 5.8 years. If a sample of 50 Filipino people is

    asked by Rhea on February 28, 2013
  81. Physics

    You have a tiny slip of paper and a large rectangular wooden block. If you put both of them side-by-side and drop the two to the floor from the same height, the block gets to the floor first. Can you think of (and describe) three “simple” ways (using

    asked by Rob on April 25, 2011
  82. math

    a car depreciates in by avalue of $1000 per year. The original value of the car is $30,000. Let V(x) be the value of the car in x years. Write the linear function that represent the value of the car in x years. what will be the value of the car after 7

    asked by kirk on June 17, 2013
  83. Physics

    A bullet with a mass of 10 imbeds itself in a wooden block of mass 3990g and is free to move. If the speed of the block and bullet together is 50 cm/s just after the impact what was the original speed of the bullet ?

    asked by Mary Grace on November 21, 2012
  84. math

    Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

    asked by zach on July 18, 2013
  85. math

    Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

    asked by zach on July 22, 2013
  86. Geography

    In what model of the universe did philosophers of the middle ages believe? Give details

    asked by Kaitlyn on January 29, 2016
  87. Science

    what can you say about the ages of two wild separted layers of rock that contain the same type of fossil

    asked by pAvLeEn on March 28, 2010
  88. math

    A boy is 6yrs older than his sister the product of their ages is 135'

    asked by Aishat on December 2, 2018
  89. math

    bill is half as old as his father. next year , their ages will total into 62.how ols is each now.

    asked by armelyn on August 26, 2018
  90. MATH126

    I was 29 when my son was born, what equation would I use to figure out what our ages would be when I am exactly three times his age?

    asked by LeeV on January 3, 2013
  91. MATH

    RAQUEL IS NOW 3YRS OLDER THAN BEN.IN 5 YRS,THE SUM OF THEIR AGES WILL BE IS HOW OLD ARE THEY NOW?

    asked by ADELANE MAHINLO on February 2, 2017
  92. History

    When did the dark ages occur? How did it start? What happened during those times? How did it end?

    asked by Devi on September 5, 2012
  93. Early Childhood

    The reason teachers need to know what constitutes typical ages and growth sequences is because:

    asked by Cadeshia on May 8, 2016
  94. Science

    Need help finding a site that has DETAILED descriptions all about frogs been searching ages.... Help!

    asked by Muilik(Mu-lique) on May 28, 2009
  95. Philosophy

    In history of science, Why is the medieval period referred to as "Dark Ages".

    asked by Angel on December 15, 2018
  96. math

    tom family had three daughters and their ages added up to 11..the product is 24 how old are the children

    asked by beth on November 8, 2011
  97. Identify the regular verb or verb phrase

    In the Middle Ages, students learned from priests and other church officials.

    asked by lola on July 24, 2014
  98. mat

    Write an equation about the difference in ages between these two children. Ann is 13. Lisa is 9 ?

    asked by Anonymous on January 24, 2011
  99. English

    Gansberg is very precise in this article, especially in his references to time, address, and ages.Why?

    asked by Rose on October 24, 2017
  100. geology

    during glacier ice ages, sea level rises or falls?

    asked by Ash on May 23, 2012