1. Science

    1.) Robin hood shoots an arrow up in the night sky. What is the acceleration at the very top of its path? 2.) Juan's car has an acceleration = -2.76m/s^2 and a velocity = 43m/s. Is he slowing down or speeding up?

    asked by Candy on October 21, 2014
  2. Physics

    A box is given a quick push so that it slides along a horizontal floor. a) What is its acceleration if the coefficient of kinetic friction is 0.30? b) How far will it travel if its initial speed was 3.0m/s? Is it possible to find the acceleration when only

    asked by sh on February 2, 2010
  3. physics

    a typical person can tolerate an acceleration of about -49m/s2 (forward). If you are travelling at 110km/h and have a collison with a solid immovable object, over what minium distance must you stop so as to not exceed this acceleration

    asked by nessa on February 15, 2017
  4. Physics

    A rocket is launched vertically such that its acceleration upward is 4.7g. If it can maintain that acceleration, how much time (in minutes) would it take to reach the orbit of the International Space Station 310km above Earth’s surface?

    asked by catie on September 23, 2018
  5. physics

    A 873-kg (1930-lb) dragster, starting from rest completes a 403.7-m (0.2523-mile) run in 4.920 s. If the car had a constant acceleration, what would be its acceleration and final velocity?

    asked by javane on November 26, 2010
  6. Physics

    The block of mass 3.43553 kg has an acceleration of 2.1 m/s^2 as shown. / / F a _____________

    asked by Jules on November 20, 2016
  7. physics

    A 873-kg (1930-lb) dragster, starting from rest completes a 403.6-m (0.2523-mile) run in 4.935 s. If the car had a constant acceleration, what would be its acceleration and final velocity?

    asked by Jahlyssa on December 7, 2016
  8. physics help!!

    A hypothetical spherical planet consists entirely of iron (p=7860kg/m^3). Calculate the period of a satellite that orbits just above its surface. I really can't solve this! No other information was provided. Please and thank you

    asked by Anonymous on March 3, 2010
  9. Physics

    A hypothetical spherical planet consists entirely of iron (p=7860kg/m^3). Calculate the period of a satellite that orbits just above its surface. I really can't solve this! No other information was provided. Please and thank you

    asked by Anonymous on March 3, 2010
  10. Elementary mechanics

    Given that the mass and radius of jupiter are respectively 190000000kg 7150000km.Calculate the escape velocity from the surface of the planet(a)11.2 km/s(b)33.3km/s(c)59.5km/s(d)110.4km/s

    asked by jane on July 15, 2013
  11. physics help!!!

    A hypothetical spherical planet consists entirely of iron (p=7860kg/m^3). Calculate the period of a satellite that orbits just above its surface. I really can't solve this! No other information was provided. Please and thank you

    asked by Anonymous on March 3, 2010
  12. Physics

    On a mass of 100 kg, a force of 120 N acts right and at an angle of 30 degrees to the horizontal. If the coefficient of sliding friction is .1 what is the acceleration of the mass? Net force= mass*acceleration Horizontal force -frictionalforce =

    asked by Tiff on August 21, 2006
  13. Physics

    A bush baby, an African primate, is capable of leaping vertically to the remarkable height of 2.3 m. To jump this high, the bush baby accelerates over a distance of 0.14m while extending the legs. The acceleration during the jump is approximately constant.

    asked by Hayley on October 9, 2014
  14. algebra

    In printing an article of 48,000 words, a printer decides to use two sizes of type. Using the larger type, a printed page contains 1,800 words. Using a smaller type, a page contains 2,400 words. The article is allotted 21 full pages in a magazine. How many

    asked by Raphael Martins on March 5, 2010
  15. Physics

    Tom (65 kg) is standing on a scale in an elevator holding an apple. The elevator begins to accelerate downwards at 2.4 m/s2. (a) What does the scale read during this acceleration? (b) What is the acceleration of the apple with respect to Tom holding the

    asked by lost in life on March 21, 2016
  16. Physics

    1.(a)When a record player is stopped, the turnabble initially rotating at 33.3rpm,slows down and stops 60s.Calculate the angular acceleration of the turnable.(b)a grinding wheel when turned on,accelerates with an agnular acceleration of 50rad/s^2 . How

    asked by miss sixty on November 14, 2006
  17. physics

    A crate of mass 59.3 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.357, and the coefficient of kinetic friction is 0.304. (a) The truck accelerates forward on

    asked by lib on October 3, 2012
  18. Physics URGENT!!!

    A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on

    asked by Anonymous on October 3, 2012
  19. Physics HELP!

    A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on

    asked by Anonymous on October 3, 2012
  20. Physics- Elena please help!

    A crate of mass 52.8 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.351, and the coefficient of kinetic friction is 0.305. (a) The truck accelerates forward on

    asked by Anonymous on October 3, 2012
  21. eNGLISH

    this is being graded along with this poem (I KNOW IT'S LONG BUT DON'T BE SCARED TO READ IT. I NEED THE COMMENTS): When nothing else remains, I want to know if you’ll stand by my side. If you’ll be the light of my path when the sun shuts down. I want to

    asked by Jahnay on October 19, 2011
  22. English

    his is being graded along with this poem (I KNOW IT'S LONG BUT DON'T BE SCARED TO READ IT. I NEED THE COMMENTS): When nothing else remains, I want to know if you’ll stand by my side. If you’ll be the light of my path when the sun shuts down. I want to

    asked by READ ME (jahnay) on October 19, 2011
  23. Physics

    Is a net force being applied to an object when the object is moving downward under the following conditions? a) with a constant acceleration of 9.80 m/s2 yes no not enough information to decide Explain. (b) with a constant velocity of 9.80 m/s yes no not

    asked by Mary on March 20, 2007
  24. Physics

    2 objects are connected on an inclined table. The objects have masses 8.0kg, 4.0kg, and 2.0kg, and the pulleys are frictionless. (The one that is 8.0 is suspended from a pulley off the left side of the table, 4.0kg is on the table, and 2.0kg is suspended

    asked by Jen on August 2, 2013
  25. PHYSICS

    Particles 1 and 2, each of mass m, are attached to the ends of a rigid massless rod of length L1 + L2, with L1 = 19 cm and L2 = 75 cm. The rod is held horizontally on the fulcrum and then released. What is the magnitude of the initial acceleration of

    asked by Calvin on March 24, 2007
  26. physics

    Rocket-powered sleds are been used to test the responses of humans to acceleration. Start- ing from rest, one sled can reach a speed of 510 m/s in 2.37 s and can be brought to a stop again in 3.15 s. Find the acceleration of the sled while ac- celerating.

    asked by help on November 5, 2014
  27. physics

    Given the graph below with the initial velocity, vi = -8 m/s, the object starts with one value of constant acceleration and stops at 2.3 seconds. Then, the value of its acceleration changes to a different acceleration. Finally, at t1 = 6.8 seconds, it

    asked by JJ on September 7, 2017
  28. Physics

    By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.95 m/s and v2 = 1.70 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor.

    asked by Will G on April 2, 2008
  29. Physical science check answers

    1. Imagine that you pushed a box, applying a force of 60 newtons, over a distance of 4 meters. How much work have you done? 15 joules 56 joules 64 joules 240 joules*** Question 2 (Multiple Choice Worth 2 points) Which statement best describes the

    asked by Summer Moriarty on September 14, 2016
  30. english

    He made a drug that could separate the good from the evil (meaning: the good and evil side of human personality)? A few days later/after/ afterwards? He transformed into Mr Hyde He transformed himself into Mr Hyde? While she was sitting on the bus she was

    asked by Franco on December 29, 2009
  31. maths

    A rope AB attached to a small block of neglible dimensions and passes over apulley C so that its free end hangs 1.5 metres above ground. When block rests on the floor. The end A of the rope is moved horizontally in astraight line by a man walking at a

    asked by ramya on March 21, 2014
  32. Physics I Newton's 2nd Law

    I need help! I cannot seem to figure out what I will need to do for my final tomorrow. I will be given a mass of a glider and an acceleration. Another mass (my unknown) will be tied to a string to the glider and will graphically give me my acceleration.

    asked by Chrissie on December 5, 2013
  33. science linear prog

    A small farm in Illinois has 110 acres of land available on which to grow corn and soybeans. The following table shows the cultivation cost per acre, the labor cost per acre, and the expected profit per acre. The column on the right shows the amount of

    asked by Duke on October 25, 2013
  34. physics

    A football is thrown horizontally with an initial velocity of (16.5 m/s). Ignoring air resistance, the average acceleration of the football over any period of time is (-9.81 m/s2). (a) Find the velocity vector of the ball 1.62 s after it is thrown. (b)

    asked by micole on May 14, 2007
  35. statistics

    The caffeine content of a cup of home-brewed coffee is a normally distributed random variable with a mean of 115 mg with a standard deviation of 20 mg. (a) What is the probability that a randomly chosen cup of home-brewed coffee will have more than 130 mg

    asked by Alejandra on October 24, 2010
  36. AP English Lit

    Hi, I have a question that I'm stuck on. Do you know what kind of poem William Butler Yeats's poem "When You Are Old" is? That is, is it a sonnet or an epic or something else altogether? Please help! Here is the poem: When You Are Old When you are old and

    asked by Kate on May 20, 2013
  37. physics

    Three boxes are connected by cords, one of which (mA) wraps over a pulley having negligible friction on its axle and negligible mass and two boxes (mB & mC) are hanging. The masses are mA = 22.0 kg, mB = 40.0 kg, mC = 16.0 kg. -When the assembly is

    asked by **chocolatekisses on February 9, 2007
  38. English

    1. What are the means of public transportation in our country? 2. What does the color on the subway map mean? 3. Find and write down the sentences which are the reasons for the following sentences from the reading text. 4. Draw a line between the picture

    asked by John on October 21, 2008
  39. physics

    the coefficient of starting friction for wood on wood is 0.55. What is the force of friction of a wood block of mass 3.5 kg being pulled on a wood floor? i think i use the formula F=mMA where F is the force needed to move a solid from rest, m=coefficient

    asked by courtney on October 17, 2010
  40. Physics

    One end of a cord is fixed and a small 0.270-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m, as shown in the figure below. When θ = 18.0°, the speed of the object is 6.80 m/s. (a) At this

    asked by <3 on October 20, 2013
  41. physics

    A person throws a 2.5 lb stone into the air with an initial upward speed of 15 ft/s. Make a free-body diagram for this stone (a) after it is free of the person’s hand and is traveling upward, (b) at its highest point, (c) when it is traveling down ward,

    asked by joe on February 1, 2012
  42. English

    his is being graded along with this poem (I KNOW IT'S LONG BUT DON'T BE SCARED TO READ IT. I NEED THE COMMENTS): When nothing else remains, I want to know if you’ll stand by my side. If you’ll be the light of my path when the sun shuts down. I want to

    asked by Jahnay on October 19, 2011
  43. Health

    What is one effective way to keep bones strong

    asked by So confused on June 27, 2016
  44. chemistry

    what is the ph of a 2.0M solution of a strong acid?

    asked by emmanuel on April 4, 2011
  45. social studies

    need help on a speach about a leader with strong will

    asked by :-)tegz eibz on October 30, 2007
  46. chemistry

    why is NaCl described as a strong electrolyte?

    asked by tommy on May 18, 2009
  47. Health

    What is one effective way to keep bones strong?

    asked by So confused on June 27, 2016
  48. college-chemistry

    How do you know when a base is weak or strong?

    asked by Anonymous on September 22, 2012
  49. human relations part

    a strong language often means?

    asked by jame abram on October 8, 2014
  50. math

    Explain how you can find 3/8% of $800? Not sure how to write it out, I know the answer is 3.

    asked by Shelby on May 7, 2012
  51. Money

    How much would £800,000 gain in interest over 30 years

    asked by Kath on December 24, 2010
  52. Math

    The exponential is Y= 800(2(^0.25x) rearrange the equation for x

    asked by prash on September 8, 2014
  53. Social Studies

    what an indigenous group who left their cities around 800 A.D.

    asked by Davidson on November 3, 2011
  54. Math

    Is the sum of 425 and 390 less than or greater than 800. How do you know?

    asked by Jeremiah on August 30, 2016
  55. math

    What is 905,000,800 in expanded form?

    asked by The Curse Word Destroyer, age 11 on August 31, 2012
  56. 4gr math

    use the digits 4,8 and 7 once each to make an even number greater than 800

    asked by jojo on March 18, 2010
  57. Algebra

    Find the value of x for which the area is a maximum: A = 800 + 20x - 1/2x^2

    asked by Hannah on September 12, 2014
  58. macroeconomics

    800-100p=-100+200p how also to graph it.

    asked by tina on May 1, 2008
  59. Finite Math

    How long will it take $800 to earn $18 at 6% simple interest?

    asked by Matt on February 17, 2013
  60. Pre-Calculus

    How do you solve the equation(800+x)tan33=xtan35?

    asked by Angie on December 29, 2014
  61. chemistry

    with the numbers 3, 7, 10 & 12 how you you make up the number 800 using different functions?

    asked by samantha on July 11, 2010
  62. Algebra

    What is the largest perfect square that divides 64,800?

    asked by tyler on December 3, 2010
  63. Math

    Find the smallest number that round's to 800

    asked by Mathematics on June 28, 2018
  64. English

    I PUT THIS UP AND NO ONE HELPED:( what are the literary elements in my poem? i just wrote it i didn't think about that and now i need to find some but all i can see is alliteration. PLEASE HELP All I Want is Us When nothing else remains, I want to know if

    asked by Jahnay on January 11, 2012
  65. Physics

    I want to know the reasoning behind each answer as well cause I have the answers, I want to know why and how to do the answers as well :) A parachutist jumps from a height of 3.1 × 10[Power 3] m and falls freely for 10 s. She then opens her parachute, and

    asked by lomonoyan on March 15, 2016
  66. math!

    Suppose that to land on Free Parking in the game of Monopoly, you will need to roll a 3, and to land on Chance you will need to roll a 7. What is the probability that on your roll of two fair, six-sided dice that you will land on either Free Parking or

    asked by emma on August 1, 2013
  67. Physics

    For a science fair competition, a group of high school students build a kicker-machine that can launch a golf ball from the origin with a velocity of 16.0 m/s and initial angle of 36.8° with respect to the horizontal. (a) Where will the golf ball fall

    asked by Gina on September 10, 2010
  68. Physics

    For a science fair competition, a group of High School students built a kicker-machine that can launch a golf ball from the origin with a velocity of 12.3 m/s and initial angle of 29.9° with respect to the horizontal. *Where will the golf ball fall back

    asked by Emily on January 30, 2011
  69. physics

    Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Some assert that this effect is due to gravity. Examine this claim with Newton's law of gravity. Calculate

    asked by cb on March 14, 2009
  70. Physics

    What is the change in angular momentum of a planet with radius R if an asteroid mass m and speed v hits the equator at an angle from the west, 40 degrees from the radial direction?

    asked by Anthony on May 12, 2013
  71. math

    The planet Mercury travels 180,600 miles in its orbit during the 7 hours that make up a typical school day. Find the unit rate.

    asked by tyjuan carter on June 20, 2016
  72. Physics-Change in Angular Momentum

    What is the change in angular momentum of a planet with radius R if an asteroid mass m and speed v hits the equator at an angle from the west, 40 degrees from the radial direction?

    asked by Anthony on May 13, 2013
  73. Reading

    44. Super tires Full set special $ 175 30,000 plus 10, 000 miles warranty Balance, rotation, and Alignment included Free disposal of old tires ($50 value) Good Tread Tires Four tires $ 150.00 40,000 miles warrantly Balance, rotation and Alignment $25 Free

    asked by BARNETTA on August 15, 2015
  74. Chemistry

    A solution made up of 1.00 M NH3 and 0.500 M (NH4)2SO4 has a pH of 9.26. a. Write the net ionic equation that represents the reaction of this solution with a strong acid. b. Write the net ionic equation that represents the reaction of this solution with a

    asked by Jason on August 3, 2014
  75. Coronado

    Compute the standard deviation for stress. Determine where participants fall in relation to the mean. (Create a diagram that depicts where students fall in relation to standard deviations around the mean. Participant Group Fights Stress 1 PSY 7 86 2 PSY 3

    asked by Tracy on October 21, 2011
  76. finance

    alpha of stock zero return on market 16% risk free rate 5% stock earns a return that exceeds risk free rate by 11% What is the Beta of the stock?

    asked by Tiffany on May 31, 2008
  77. physics

    As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically,

    asked by kia on February 17, 2011
  78. phy

    As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically,

    asked by kia on February 18, 2011
  79. physics

    This question has me stumped because I am not really sure about the capacitor. "Imagine a free electron and a free proton held midway between the plates of a charged parallel plate capacitor. When released, how do their accelerations and directions of

    asked by Jan on April 30, 2012
  80. Dynamics Maths

    The Giant Ferris Wheel has a radius of 30meters. Assuming that a time t= t_0 , the wheel rotates counterclockwise with a speed of 40m/min, and is slowing at a rate of 15m/min^2 . Find acceleration vector for a person seated in a car at the lowest point of

    asked by Thongfye on April 11, 2012
  81. Apply Calculus

    The Giant Ferris Wheel has a radius of 30meters. Assuming that a time t= t_0 , the wheel rotates counterclockwise with a speed of 40m/min, and is slowing at a rate of 15m/min^2 . Find acceleration vector for a person seated in a car at the lowest point of

    asked by Thongfye on April 12, 2012
  82. Physics

    An object is released from rest at height h above the surface of the Earth, where h is much smaller than the radius of the Earth. It takes t seconds to fall to the ground. At what height should this object be released from rest in order to take 2t seconds

    asked by Liza on June 23, 2012
  83. Help Physics 1 question

    Period=1.4 seconds gravitational acceleration=9.8 m/s^2 length of string=.4865m angle is 3 degrees acceleration from that angle is=.5129 m/s^2 change in bobs height from release to bottom of arc=.000667m bobs speed at bottom of arc=.1143 m/s so i done all

    asked by Ellie on November 5, 2009
  84. physics

    A salamander of the genus Hydromantes captures prey by launching its tongue as a projectile: The skeletal part of the tongue is shot forward, unfolding the rest of the tongue, until the outer portion lands on the prey, sticking to it. Figure 2-36 a2- . a1-

    asked by Pat Rick on August 26, 2011
  85. physics

    016 10.0 points One of the great dangers to mountain climbers is an avalanche, in which a large mass of snow and ice breaks loose and goes on an essentially frictionless “ride” down a mountainside on a cushion of compressed air. The acceleration of

    asked by Kyle on October 14, 2014
  86. physics

    016 10.0 points One of the great dangers to mountain climbers is an avalanche, in which a large mass of snow and ice breaks loose and goes on an essentially frictionless “ride” down a mountainside on a cushion of compressed air. The acceleration of

    asked by Kyle on October 15, 2014
  87. Physics

    A round object with mass m and radius R rolls down a ramp that makes an angle θ with respect to the horizontal. You can assume there is static friction so that the object rolls without slipping. a) For now, take the moment of inertia of the object to be I

    asked by Vivek on November 23, 2015
  88. Math

    *Sigh* Can someone explain to me how I would work through this problem? An honest coin tossed n=3600 times. Let the random variable Y denote the number of tails tossed. (a) find the mean and the standard deviation of the distribution of the random variable

    asked by SherylA on October 5, 2006
  89. science

    To stop an elevator in free fall, brakes are installed between the walls of the elevator car and the walls of the shaft in which the car moves. In addition, springs with compression coils are installed on the floor, at the bottom of the shaft, in order to

    asked by christine on September 2, 2010
  90. Math 156

    1)Suppose you buy 1 ticket for $1 out of a lottery of 3000 tickets. If the prize for the one winning ticket is to be $500, what are your expected winnings? I'm assuming the answer for this one is $0.00 2)A basketball player with a free throw shooting

    asked by jessica on August 7, 2009
  91. Pls help me - English

    "President Lincoln's Declaration of Emancipation, January 1, 1863 bu Frances E. W. Harper It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears IT shall flush the mountain

    asked by BUBBLES on March 19, 2015
  92. phy

    A wheel rotates about an axis passinG through the centre and perpendicular to the plane with slowly increasinG angular speed.thus it has? A. Radial velocity and radial acceleration B. Tangential velocity and radial acceleration C. Tangential velocity and

    asked by SAGAR on July 4, 2016
  93. MATH

    A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following a. What scores fall between –1 and +1 standard deviation? b. What percent of all scores fall between –1 and +1 standard deviation? c. What score falls at +2

    asked by Bridget on April 4, 2012
  94. precalculus

    The acceleration acting on a falling object due to gravity varies inversely with the square of the object's distance from the center of Earth. At the surface of Earth, where x = 1 Earth radius, the acceleration is y = 9.8 m/s2 1. Use the multiply-multiply

    asked by Anonymous on January 20, 2011
  95. physics

    A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (b) The truck barely exceeds this

    asked by Anonymous on October 5, 2012
  96. Urgent!!! Physics

    At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find

    asked by andrea on January 27, 2011
  97. Basic Physics

    There is a rocket on a stage connected a spring with the spring constant k(N/m). The weights of the rocket and the stage are m(kg) and M(kg), respectively. The length of the spring without the stage and rocket or free is h0(m) and it becomes shrunk to h(m)

    asked by Sarwar on March 2, 2015
  98. math 1 question pls help!!!

    6. Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the

    asked by TTR+S<3 on May 2, 2014
  99. math

    Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the

    asked by help please on May 7, 2014
  100. U.S. GOVERNMENT

    George Mason stated: "no free government, or the blessings of liberty can be preserved to any people, but by frequent recurrence to fundamental principles." considering contemporary issues, what are these "fundamental principles" that are necessary to

    asked by I NEED HELP!!!!!!!! on September 1, 2007