1. Science (Asap)

    You learned that a tree can be cut down and shaped into a bat.This is a physical change.What are some of the physical changes we find in nature?

    asked by Frances on May 2, 2011
  2. Chemistry

    Is cutting a tree reversible? Several things come to mind, maybe not the same tree will grow back or not. Pls help. Thanks much. Cutting a large tree DOWN, as in severing the trunk, surely is not reversible. We can't cut the tree down, then glue it back

    asked by Nathan on February 14, 2007
  3. biomechanics

    The sweet spot on a baseball bat is 120 cm from the axis of rotation during the swing of the bat. (This seems long at first, since the bat is shorter than 120 cm. But the bat’s axis of rotation is outside of the bat and passes through the body of the

    asked by anonymous on August 3, 2016
  4. Physics URGENT!!!!!!!!!!!!

    A
 bat­ watcher
 detects
 the
 sound
 of
 a
 hunting
 greater
horseshoe
 bat 
at
 76 kHz .
She
 knows
 that
 this
 species
 produces
 echolocation 
calls
 at
 80 kHz .
What
 is
 the
 speed
 of


    asked by enrique on May 5, 2014
  5. Math

    A large elm tree died after it was struck by lightning. The property owner thinks he can remove it himself, but is concerned that it will fall on his greenhouse. He takes several measurements before attempting to cut it down. At 3 PM he measures the shadow

    asked by Flora on January 31, 2016
  6. Science

    A 0.5-kg baseball is pitched at 45 m/s and is struck by a bat and sent back toward the pitcher at -45 m/s. If the ball is in contact with the bat for 0.0025 seconds, how hard does the bat hit the ball? What forces act on the ball after the bat hits it?

    asked by Horace on November 15, 2011
  7. math

    a large elm tree died after it was struck by lightning.the property owner thinks he can remove it himself,but is concerned that it will fall on his greenhouse.he takes several measurement before attempting to cut it down.at 3 p.m. he measures the shadow of

    asked by nadia on November 15, 2012
  8. Physics

    A 0.25 kg ball moving at 19.0 m/s is hit by a bat. The ball leaves the bat at a speed of 38 m/s in the opposite direction. If the bat is in contact with the ball for 0.01 s, find the magnitude of the average force exerted on the ball by the bat.

    asked by kt on July 10, 2018
  9. Physics

    An aluminum baseball bat has a length of 0.87 m at a temperature of 20°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Determine the final temperature of the bat. °C

    asked by Will on April 4, 2008
  10. Physics

    An aluminum baseball bat has a length of 0.87 m at a temperature of 20°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Determine the final temperature of the bat.

    asked by Happy on April 6, 2008
  11. physics

    3)A baseball player holds a 36oz bat (weight = 10N) with one hand at the point O (Figure below). The bat is in equilibrium. The weight of the bat acts along a line 60cm (or 0.6m) to the right of O. Determine the force and torque exerted on the bat by the

    asked by joy on April 22, 2018
  12. physics

    A baseball (m = 148 g) approaches a bat horizontally at a speed of 43.8 m/s (98.0 mi/h) and is hit straight back at a speed of 48.4 m/s (108 mi/h). If the ball is in contact with the bat for a time of 1.08 ms, what is the average force exerted on the ball

    asked by tcc on July 25, 2013
  13. physics

    A softball player swings her bat through her full range of motion of 392 degrees in 0.3 secs. What is the angular velocity of the bat? What is the average acceleration of the bat?

    asked by Mark on February 25, 2013
  14. physics

    A bat moving with a speed of 3.55 m/s and emitting sound of 34.0 kHz approaches a moth at rest on a tree trunk. What frequency is heard by the moth? Calculate the frequency heard by the moth when the speed of the bat is 5.55 m/s.

    asked by utl on March 11, 2014
  15. pre calculus

    A wire 10m long is cut into 2 pieces. one piece will be cut into a square the other piece will be shaped into a circle. Graph A= A(x) for what value of x is A smallest?

    asked by ann9012 on November 18, 2012
  16. College physics

    When a 0.15 kg baseball is hit, it approaches the bat with a speed of 20 m/s and undergoes an elastic collision. (a) What is the impulse delivered to the bat by the ball? (b) If the baseball is in contact with the bat for 1.3 ms, what is the average force

    asked by Jeffrey on October 24, 2014
  17. Physics

    A 0.15 kg baseball is moving at 35 m/s toward home plate when it is hit with the bat. The ball is in contact with the bat for 0.0019 s, and leaves the bat at 25 m/s directly away from home plate. Determine the average force exerted by the bat on the ball.

    asked by Timmy on October 20, 2016
  18. Physics help!!

    A 0.15 kg baseball is moving at 49 m/s toward home plate when it is hit with the bat. The ball is in contact with the bat for 0.0022 s, and leaves the bat at 25 m/s directly away from home plate. Determine the average force exerted by the bat on the ball.

    asked by jerod on October 1, 2015
  19. physics

    A pitcher throws a 0.141-kg baseball toward the batter so that it crosses home plate horizontally and has a speed of 42 m/s just before it makes contact with the bat. The batter then hits the ball straight back at the pitcher with a speed of 50 m/s. Assume

    asked by king on November 30, 2015
  20. physics

    A bat flying at 6.00 m/s emits a chirp at 40.0 kHz. If this sound pulse is reflected by an insect moving away from the bat at 2.00 m/s, what is the frequency of the echo received by the bat? Assume the air temperature is 25.0 ˚C. Would I need two

    asked by Elisa on August 6, 2008
  21. Physics

    The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.021 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at

    asked by Taylor on November 4, 2010
  22. Science

    Luis is an avid baseball player. For his science project, he decides to test which type of bat is best for hitting home runs. Luis prefers to use an aluminum bat when he plays, so he hypothesizes that he will hit more home runs using an aluminum bat than a

    asked by lizbeth on September 14, 2015
  23. science

    Luis is an avid baseball player. For his science project, he decides to test which type of bat is best for hitting home runs. Luis prefers to use an aluminum bat when he plays, so he hypothesizes that he will hit more home runs using an aluminum bat than a

    asked by lizbeth on September 14, 2015
  24. Physic

    A 135 g baseball traveling at a speed of 36 m/s hits a bat and moves back along its incoming trajectory with a speed of 47 m/s. a) What is the impulse delivered to the ball by the bat? (Answer: 11.2kg * m/s) b) If the duration of the bat-ball collision is

    asked by Anonymous on April 22, 2014
  25. physics

    A baseball of mass 0.145 kg approaches a bat at 40.0 m/s. After it is hit, the ball leaves the bat at 50.0 m/s directly back. Find the impulse of the bat on the ball.

    asked by Mackenzie on January 23, 2014
  26. Physics

    The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.020 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at

    asked by Ana on March 13, 2010
  27. physics

    A bat exerts force of 755N on a 320g ball that approaches the bat at 40 m/s and leaves at 64 m/s. How long was the ball in contact with the bat?

    asked by Angie on May 13, 2016
  28. Physics

    A softball player swings a bat, accelerating it from rest to 8 rev/s in a time of 0.3 s. Find the torque the player applies to one end of the bat. Approximate the bat as a 2.2 kg uniform rod of length 0.95 m.

    asked by Anonymous on August 1, 2015
  29. math

    which of the following professonal baseball playershad the best batting average during 1999 season a. 188 hits in 620 at bat b.181 in 575 at bat c. 152 hits in 601 at bat? i chose b but i am not sure i am right please help me

    asked by jesse on September 4, 2007
  30. physics

    In a Little League baseball game, the 145 g ball enters the strike zone with a speed of 13.0 m/s. The batter hits the ball, and it leaves his bat with a speed of 21.0 m/s in exactly the opposite direction. 1. what is the magnitude of the impulse delivered

    asked by sam on November 5, 2014
  31. physics

    140gm baseball travel 39m/s hits bat and travels at 45m/s at 30degree angle above horizontal,ball in contact wiht bat for 1.2ms calculate magnitude of average force on ball by bat

    asked by Anonymous on January 7, 2012
  32. physics

    A batted baseball leaves the bat at an angle of 33.0∘ above the horizontal and is caught by an outfielder 380ft from home plate at the same height from which it left the bat. 1. What was the initial speed of the ball? 2. How high does the ball rise above

    asked by chibest on February 14, 2015
  33. physics

    A baseball (m = 135 g) approaches a bat horizontally at a speed of 40.4 m/s (90 mi/h) and is hit straight back at a speed of 45.7 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the ball by

    asked by Anonymous on November 12, 2012
  34. Physics

    A baseball (m = 135 g) approaches a bat horizontally at a speed of 40.4 m/s (90 mi/h) and is hit straight back at a speed of 45.7 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the ball by

    asked by D on November 18, 2012
  35. physics

    a baseball (m = 153 g) approaches a bat horizontally at a speed of 41.0 m/s (92 mi/h) and is hit straight back at a speed of 45.8 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.05 ms, what is the average force exerted on the ball by

    asked by Kelsey on November 9, 2011
  36. physics

    A baseball (m = 151 g) approaches a bat horizontally at a speed of 39.8 m/s (89 mi/h) and is hit straight back at a speed of 45.7 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.05 ms, what is the average force exerted on the ball by

    asked by Natasha on March 12, 2012
  37. Physics

    A baseball (m = 149 g) approaches a bat horizontally at a speed of 42.2 m/s (94 mi/h) and is hit straight back at a speed of 48.1 m/s (108 mi/h). If the ball is in contact with the bat for a time of 1.10 ms, what is the average force exerted on the ball by

    asked by Cammy on October 23, 2014
  38. PHYSICS HELP

    The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.021 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at

    asked by Taylor on November 4, 2010
  39. biology

    Several species of warblers can live in the same spruce tree ONLY because they a. have different habitats within the tree b. don't eat food from the tree c. occupy different niches within the tree **** d. can find different temperatures within the tree

    asked by Anonymous on October 5, 2018
  40. Physics

    A baseball whose mass is 0.25kg is struck by a bat. just before impact, the ball is traveling horizontally ay 40m/s to the left and it leaves the bat at an angle of 30 degrees above the horizontal with a speed of 60m/s. if the ball and bat were in contact

    asked by Rita on November 26, 2012
  41. Physics

    A batted baseball leaves the bat at an angle of 30.0 degrees about the horizontal and is caught by an outfilder 375 ft from home plate at the same height from which it left the bat. (a) what was the initial speed on the ball? (b) how high does the ball

    asked by Sarah on June 4, 2009
  42. physics

    A batted baseball leaves the bat at an angle of 26.0^\circ above the horizontal and is caught by an outfielder 355{\rm ft} from home plate at the same height from which it left the bat. What was the initial speed of the ball? How high does the ball rise

    asked by anonymous on January 26, 2013
  43. mythology

    This animal is covered in vivid purple scales and has a body shaped like an iguana. Its face resembles an alligator and its eyes are like a gecko. It has long horns and bat wings.

    asked by hamburger on March 8, 2018
  44. English

    1. I learned about some Chinese expressions and Chinese cultures. 2. I learned about the length of the Great Wall of China. 3. I leaned Chinese songs. 4. I learned that China has a long history. (Do we have to use 'had'?) 5. I learned that Chinese people

    asked by John on June 9, 2009
  45. Physics

    A 0.145- kg baseball with an initial speed of 27 m/s rebounds with a speed of 32 m/s after being struck with a bat. If the duration of contact between ball and bat was 1.5 ms, what was the magnitude of the average force between ball and bat?

    asked by Alex on November 4, 2014
  46. physics

    A bat moving at 3.7 m/s is chasing a flying insect. The bat emits a 36 kHz chirp and receives back an echo at 36.79 kHz. At what speed is the bat gaining on its prey? Take the speed of sound in air to be 340 m/s.

    asked by Anonymous on February 10, 2013
  47. physics

    A bat flying at 4.54 m/s emits a chirp at 115 kHz. If the pulse is reflected by a wall, what is the frequency (kHz) of the echo heard by the bat? The temperature of the air is 25.0 C. (HINT: What is the source of the sound heard by the bat?)

    asked by Anonymous on February 11, 2014
  48. Physics

    Babe Ruth steps to the plate and casually points to left center field to indicate the location of his next home run. The mighty Babe holds his bat across his shoulder, with one hand holding the small end of the bat. The bat is horizontal, and the distance

    asked by AfterLife on July 27, 2011
  49. English

    1. He tried to climb the tree. 2. He tried climbing the tree. 3. He wanted to climb the tree,so he did his best, but he couldn't climb the tree. 4. He climbed the tree to check whether he could stand on the thick branches to pick fruit.

    asked by rfvv on September 12, 2017
  50. physics please help!

    A bat moving at 6.5 m/s is chasing a flying insect. The bat emits a 37 kHz chirp and receives back an echo at 37.65 kHz. At what speed is the bat gaining on its prey? Take the speed of sound in air to be 336 m/s. Answer in units of m/s

    asked by maura on December 8, 2012
  51. science

    A bat moving at 5.6 m/s is chasing a flying insect. The bat emits a 60 kHz chirp and receives back an echo at 60.63 kHz. At what speed is the bat gaining on its prey? Take the speed of sound in air to be 338 m/s. Answer in units of m/s

    asked by Anonymous on April 23, 2014
  52. physics

    A baseball (m = 149 g) approaches a bat horizontally at a speed of 39.8 m/s (89.0 mph) and is hit straight back at a speed of 45.8 m/s (102 mph). If the ball is in contact with the bat for a time of 1.27 ms, what is the average force exerted on the ball by

    asked by Jen on January 19, 2012
  53. Physics

    Bats can detect small insects that are about equal in size to the wavelength of the sound the bat makes with its echolocation system. A bat emits chirps at a frequency of 17.7kHz. Using the speed of sound as 340m/s, what is the smallest insect the bat can

    asked by rory on November 21, 2012
  54. Algebra

    When a softball player swings a bat, the amount of energy E(t), in joules, that is transferred to the bat can be approximated by the function E(t) = −279.67t2 + 82.86t where 0 ¡Ü t ¡Ü 0.3 and t is measured in seconds. According to this model, what is

    asked by Kim on November 3, 2014
  55. Physics

    A pitcher throws a 0.192-kg baseball, and it approaches the bat at a speed of 43.2 m/s. The bat does 69.8 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 32.6 m above the

    asked by Elle on April 4, 2014
  56. Physics Help!!!

    A pitcher throws a 0.111-kg baseball, and it approaches the bat at a speed of 37.4 m/s. The bat does 78.6 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 30.8 m above the

    asked by Isaac on February 26, 2012
  57. Physics

    A pitcher throws a 0.107-kg baseball, and it approaches the bat at a speed of 31.7 m/s. The bat does 77.9 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 22.7 m above the

    asked by StressedStudent on October 9, 2012
  58. physics

    A pitcher throws a 0.198-kg baseball, and it approaches the bat at a speed of 57.5 m/s. The bat does 85.1 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 32.7 m above the

    asked by Anonymous on March 19, 2014
  59. physics

    A pitcher throws a 0.168-kg baseball, and it approaches the bat at a speed of 45.2 m/s. The bat does 86.6 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 22.5 m above the

    asked by Anonymous on April 16, 2013
  60. physics

    A major leaguer hits a baseball so that it leaves the bat at a speed of 30.5m/s and at an angle of 36.9 degrees above the horizontal. You can ignore air resistance.At what two times is the baseball at a height of 8.50 above the point at which it left the

    asked by Tee on September 21, 2008
  61. Physics

    A bat moving at 5 meters per second is chasing a flying insect, if the bat emits a 40 khz chirp and receives back an echo at 40.4 khz what is the speed of the insect and will the bat be able to catch the insect?

    asked by Chris on February 2, 2016
  62. Physics

    A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 45.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above

    asked by Natasha on March 14, 2012
  63. Physics

    A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 35.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above

    asked by Xavier on October 24, 2010
  64. Physics

    A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 50.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above

    asked by Ben on October 15, 2012
  65. physics!

    A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 40.0m/s. The bat does nonconservative W=70.0J on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0m above

    asked by kabo on December 11, 2007
  66. PHYSICS!!!HELP£¡£¡

    A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 40.0m/s. The bat does nonconservative W=70.0J on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0m above

    asked by kabo on December 11, 2007
  67. Mechanical Behavior of Materials

    The television coverage of the World Series showed several remarkable slow-motion views of the deflection of the bat as it hit the ball. Major league wood baseball bats are made of ash. A typical major league bat has a length of 0.95m and a tapering

    asked by zxcv on November 8, 2014
  68. Mechanical behavior

    The television coverage of the World Series showed several remarkable slow-motion views of the deflection of the bat as it hit the ball. Major league wood baseball bats are made of ash. A typical major league bat has a length of 0.95m and a tapering

    asked by please HELP on November 11, 2015
  69. Mechanical Behavior on Materials / math

    The television coverage of the World Series showed several remarkable slow-motion views of the deflection of the bat as it hit the ball. Major league wood baseball bats are made of ash. A typical major league bat has a length of 0.95m and a tapering

    asked by mel on November 9, 2015
  70. Physics

    A baseball with a mass of 150 g is thrown horizontally with a speed of 39.5 m/s (88 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 m/s (101 mi/h). Determine the average force exerted on the

    asked by Elaine on March 2, 2014
  71. math please help

    This part I have: 1)Derive an equation for the bending deflection δ of the bat at B, where the ball hits the bat, in terms of the applied load, P, the span, lAB, the Young's modulus of ash, E and the moment of inertia of the cross section, I. Answer:

    asked by HELP on November 8, 2015
  72. Mechanical behavior

    This part I have: 1)Derive an equation for the bending deflection δ of the bat at B, where the ball hits the bat, in terms of the applied load, P, the span, lAB, the Young's modulus of ash, E and the moment of inertia of the cross section, I. Answer:

    asked by HELP on November 8, 2015
  73. physics

    0.10- baseball moves toward home plate with a velocity = (-31 ). After striking the bat, the ball moves vertically upward with a velocity = (21 ). Find the direction of the impulse delivered to the ball by the bat. Assume that the ball and bat are in

    asked by john on July 11, 2010
  74. geometry

    A wire 10 meters ong is to be cut into two pieces. One piece wil be shaped as a square, and the other piece will be shaped as a circle. (piece one is 4x, piece two is 10-4x) a)Express the total area A enclosed by the pieces of wire as a function of the

    asked by chris on November 7, 2011
  75. business and finance

    I need help in working this word problem out. I need help coming up with the answer because I have no idea what so ever of how to solve this. 850 douglas fir and ponderosa pines in a section of a forest brought by Watts Tree Company. Watts Trre Company

    asked by kevin on March 21, 2007
  76. 5th grade science

    Can you check the following? 1. Which statement about vascular plants and non-vascular plants is true? a. vascular plants produce seeds and non-vascular plants produce spores b. both plant types produce cones c. both plant types are considered angiospersm

    asked by Jay on November 29, 2017
  77. physics

    A friend has some friends who own a tree farm in Foster. This summer they cleared away all the trees that were within a 50m distance from their house. This meant that their house was safer if a fire started, as well as the fact that they now get more sun

    asked by live on November 10, 2018
  78. Physics

    A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 50.0 kHz, and if the speed of sound in air is 340 m/s, what is the smallest insect a

    asked by Josh on December 5, 2010
  79. Physics

    A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 50.0 kHz, and if the speed of sound in air is 340 m/s, what is the smallest insect a

    asked by Anonymous on December 6, 2010
  80. Math

    Julian wants to put a border around two sides of a rectangular shaped Garden he has a 12 foot piece of lumber that will be cut into 1/3 foot pieces how many 1/3 foot pieces can julienne cut from the lumber??

    asked by Luther on February 1, 2017
  81. PHYSICS

    A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 8.31 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect

    asked by Ame on November 30, 2012
  82. physics

    A flying bat emits squeaks at a frequency of 80 MHz, if a stationary observer picks up the frequency of the squeaks as 78 MHz, is the bat moving towards or away from the listener? Determine the speed of the bat.

    asked by Bafana on April 13, 2015
  83. physics!

    In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.0 ms in duration, have a frequency of 50 kHz, and an intensity level of 100 dB at 1.0 m from the bat’s mouth. Assume the bat

    asked by Jamie on April 16, 2016
  84. PHYSICS!!

    In its search for flying insects, a bat uses an echolocating system based on pulses of high frequency sound. These pulses are 2.0 ms in duration, have a frequency of 50 kHz, and an intensity level of 100 dB at 1.0 m from the bat’s mouth. Assume the bat

    asked by Ben on April 13, 2016
  85. physics

    A 0.145-kg baseball pitched horizontally at 27 m/s strikes a bat and is popped straight up to a height of 38 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let

    asked by m on February 19, 2013
  86. Trigonometry

    A TREE STANDS ON HORIZONTAL GROUND. THE ANGLE OF ELEVATION OF THE TOP OF THE TREE FROM A POINT 50 m AWAY FROM THE BASE OF THE TREE IS 11.3°. CALCULATE THE HEIGHT OF THE TREE.

    asked by Anonymous on June 16, 2016
  87. science help plzzz

    1. Over time, a particular plant has developed a longer stamen. Which of the following is a possible advantage of having a longer stamen? (1 point) A longer stamen could ensure that an insect brushes against an anther and picks up pollen. A longer stamen

    asked by josh on October 17, 2013
  88. College Physics

    A 0.145 kg baseball is moving at a speed of 15.0 meter/sec east toward the bat. The bat has 3.00x10^-3 seconds contact with the ball. As a result the ball flies back at 25.0 meter/sec west. What was the force (vector!) the bat exerted on the ball?

    asked by //** on March 24, 2010
  89. College Physics

    A 0.145 kg baseball is moving at a speed of 15.0 meter/sec east toward the bat. The bat has 3.00x10^-3 seconds contact with the ball. As a result the ball flies back at 25.0 meter/sec west. What was the force (vector!) the bat exerted on the ball?

    asked by Anonymous on March 24, 2010
  90. physics-momentum

    A 0.145-kg baseball pitched horizontally at 39 m/s strikes a bat and is popped straight up to a height of 31 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let

    asked by Anonymous on February 21, 2010
  91. Math

    Angela measured 2 trees in her front yard.Tree A is 5m. Tree B is 200 cm taller than tree A. How tall is tree B

    asked by Lexi on April 25, 2013
  92. animals

    What is the habitat and location for the Florida Bonneted bat*? Also, what is its kingdom, phylum, class, order, and sub order? *Also known as the Wagner's Mastiff bat or the Wagner's Bonneted bat

    asked by lizzy on May 17, 2012
  93. science plz help right now!!!!

    Multiple Choice 1. Over time, a particular plant has developed a longer stamen. Which of the following is a possible advantage of having a longer stamen? (1 point) A longer stamen could ensure that an insect brushes against an anther and picks up pollen. A

    asked by josh on October 17, 2013
  94. Can someone check these answer for me?

    Multiple Choice 1. Over time, a particular plant has developed a longer stamen. Which of the following is a possible advantage of having a longer stamen? (1 point) A longer stamen could ensure that an insect brushes against an anther and picks up pollen.**

    asked by josh on October 17, 2013
  95. physics for scientists and engeneers I

    A 0.145-kg baseball pitched horizontally at 27 m/s strikes a bat and is popped straight up to a height of 43 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let

    asked by Johnathon on February 15, 2011
  96. geometry

    a tree grew at a 3 degree slant from the vertical. at a point 60 feet from the tree, the angle of elevation to the top of the tree is 14 degrees. find the height of the tree to the nearest tenth of a foot.

    asked by Shelby on December 11, 2012
  97. Physics

    A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 47.0 m/s ; when it leaves the bat, the ball is traveling to the left at an angle of 31.0 ∘ above horizontal with a speed of 58.0 m/s . The ball and

    asked by Jordan on June 26, 2016
  98. physics

    A 0.01-kg baseball traveling in a horizontal direction with a speed of 12 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? (b) If the bat was in contact with the

    asked by tim on November 9, 2010
  99. AP physics multiple choice

    Consider a system like the example problem where a batting machine swings a bat but instead of a baseball, the bat hits a lump of clay, which sticks to the end of the bat. How does the angular momentum of the clay and bat after the collision compare to the

    asked by tyger2020 on November 27, 2017
  100. Doppler Effect

    Doppler Effect a flying bat emits squeaks at a frequency of 85 khz if a stationary observer picks up the frequency of the squeaks as 80 khz is the bat moving towards or away from the listener ? determine the speed at which the bat is flying.

    asked by mohammed alnunu on January 3, 2017