Starting from rest, a 2.1x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.37 N on it. This force does 1.5x10-4 J of work on the

27,588 results
  1. AP Chem

    MnS(s) + 2 H+ --> Mn2+ + H2S(g) At 25 C the solubility product constant, Ksp, for MnS is 5 x 10-15 and the acid dissociation constants K1 and K2 for H2S are 1 x 10-7 and 1 x 10-13, respectively. What is the equilibrium constant for the reaction represented

  2. Physics

    Five Boys are pushing a snowball, and each is pushing with a force of 10.0N. However, each boy is pushing in a different direction. They are pushing north, northeast, east, southeast, and south. (Each boy is pushing at an angle of 45.0 degrees relative to

  3. physics

    Starting from rest, a 2.1x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.37 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is the flea's speed when it

  4. Physics

    Suppose you walk 18.0m straight west and then 25.0 m straight north. How far are you from your starting point and what is the compass direction of a line connecting your starting point to your final position>

  5. Physics

    Newton's first law of motion states that an object in motion will continue to move at constant speed in a straight line. Only an outside force can change the speed or direction. If the object is at rest, it will remain at rest, unless an outside force is

  6. Physics

    Starting from rest, a 2.3x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.44 N on it. This force does 2.7x10-4 J of work on the flea. (a) What is the flea's speed when it

  7. physics

    For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.30 mm -long, 0.540 mg critter can reach a height of 18.0 cm in a single leap. a) Neglecting air drag, what is the takeoff speed of such a flea? -i got 1.88m/s b)

  8. Science

    Relationships Among Organisms Quick Check answers: 1. symbiotic 2. dogs and fleas 3. One organism eats another organism that makes its own food. 4. It increases because fewer mice are eaten by owls. 5. The flea population increases because there are more

  9. Physics

    A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s2 . The acceleration period lasts for time 5.00 s until the fuel is exhausted. After that, the rocket is in free fall.

  10. science

    Now, three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now the elevator is moving downward with a velocity of v = -2.9 m/s but

  11. Math

    A manufacturer of flea collars for animals that weigh less than 5 kilograms injects the collars with 15 milligrams of a biocide that only acts on fleas. The manufacturer will release a collar that has no less than 14 milligrams and no more than 16

  12. biology

    which of the following pair of organisms represents a predator-prey relationship? a- flea and dog b- robin and tree c- polar bear and seal d- bacteria in human large intestine and human

  13. Physics

    When jumping, a flea reaches a takeoff speed of 1.5over a distance of 0.45. A.) What is the flea's acceleration during the jump phase. B.) How long does the acceleration phase last?

  14. physics

    A flea pulls on a puck with force 8 microN at an angle of 75°. Another flea pulls on the puck with force 2 microN at an angle of -45°. (See diagram for angle scale.) Draw vectors on the diagram to scale representing the forces. Carefully add the vectors

  15. physics

    A uniform 1.3-kg rod that is 0.80 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring

  16. veterinary medicine

    A pet owner accidentally applies 2.5 ml of a dog flea product containing 45% permethrin to a 15 lb cat. What is the dosage this cat received?

  17. Physics helpp please!

    A 8000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs as illustrated in the figure below. Both springs are described by Hooke's law and have spring constants with k1 = 1700 N/m

  18. physics pls help

    The resilin in the body of a flea has a force constant of about 28 kg, and when the flea its jumping legs, the resilin associated with each leg is stretched by approximately 0.10 mm. Part A Given that the flea has a mass of 0.56 mg, and that two legs are

  19. Math

    A flea is very difficult for the human eye to see. Jose looks at a drawing of a flea in a book. The drawing uses the scale 5:1. The actual length of a flea is 2 mm. How long is the drawing?

  20. Physics

    A flea is able to jump straight up about 0.49 m. It has been said that if a flea were as big as a human, it would be able to jump over a 100 story building! When an animal jumps, it converts work done in contracting muscles into gravitational potential

  21. science

    A dog has been biting at the fleas that are biting it. These fleas suck the blood from the dog and can cause it to become anemic and sickly. Which term describes the relationship between the dog and the flea? parasitism mutualism commensalism competition

  22. Mathematics

    When a force of 36 Newtons is applied to springs S1 and S2, the displacement of the springs is 6 centimeters and 9 cm, respectively. What is the difference between the spring constants of the two springs? helpp

  23. PHYSICS

    You are driving a car down a straight road at a constant 48 miles per hour. Consider the following forces: I) air drag pushing back on the car; II) gravity pulling down on the car; III) the ground pushing up on the car; IV) friction pushing the wheels (and

  24. Physics

    Jumping flea. For its size, the flea can jump to amazing heights-as high as 30 straight up, about 100 times the flea's length.

  25. Language Arts Help!!!

    Choose the best paraphrase of the lines from the limerick. Said the fly “Let us flee.” / “Let us fly.” said the flea. / So they flew through a flaw in the flue. A) The 2 insects had to get out, so they flew through the chimney even though it was

  26. English

    1. We open a flea market every 4th Saturday. 2. We open a flea market every 4 Saturdays. [Are both okay? Can we use both sentences?]

  27. math (vectors) & physics

    In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (-2.0, 4.0 m, -1.0 m) when forces F1 = (-4.0 N) k and F2 = (-5.0 N) j act on the flea? _____________________________________ Torque is the cross product of

  28. math (vectors) & physics

    Posted by sam on Wednesday, March 28, 2007 at 7:32pm. In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (-2.0, 4.0 m, -1.0 m) when forces F1 = (-4.0 N) k and F2 = (-5.0 N) j act on the flea?

  29. Physics

    6) If a flea has a mass of 2.0x10^2 micrograms jumps vertically to a height of 65mm and 75% of the energy comes from elastic potential energy stored in the protein, determine the initial quantity of elastic potential energy. drwls said to use: (1/2)M g H =

  30. math

    of the 16 million people who shops at the flea market, 2/5 of these people purchase products. how many purchas products?

  31. physics

    A rocket moves straight upward, starting from rest with an acceleration of +25.5 m/s2. It runs out of fuel at the end of 4.26 s and continues to coast upward, reaching a maximum height before falling back to Earth. (a) Find the rocket's velocity and

  32. Physics

    If you throw a ball straight upward at a speed of 24 m/s, how long will it take to reach zero speed? How long will it take to return to its starting point? How fast will it be going when it returns to its starting point?

  33. physics

    Five boys are pushing on a snowball, and each is pushing with a force of 20.0 N. However, each boy is pushing in a different direction. They are pushing north, northeast, east, southeast, and south. (Each boy is pushing at an angle of 45.0° relative to

  34. math

    Peter sold watches ($7) and necklaces ($4) at a flea market. Total sales were $300. People bought 3 times as many watches as necklaces. How many of each did Peter sell? What were the total dollar sales of each?

  35. physics

    A 7000-kg freight car rolls along rails with negligible friction. The car is brought to rest by a combination of two coiled springs as illustrated in the figure below. Both springs are described by Hooke's law and have spring constants with k1 = 1700 N/m

  36. physics

    Suppose you waik 18.0m straight west and then 25.o m straight north. How far are you from your starting point and what is the compass direction of a line connecting your starting point to yourfinal position?

  37. physics

    Starting from rest, a 2.4x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is the flea's speed when it

  38. physics

    Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.38 N on it. This force does 2.6x10-4 J of work on the flea. (a) What is the flea's speed when it

  39. Physics

    High-speed motion pictures (3500frames/second) of a jumping 280ìg flea yielded the data to plot the flea's acceleration as a function of time as shown in the figure (Figure 1). This flea was about 2 mm long and jumped at a nearly vertical takeoff angle.

  40. calculus

    A flea moves along the line y = -3 according to the equation: x = t^3 - 9t^2 + 24t where x is its x coordinate at time t secs. Determine: 1) the position, velocity, and acceleration of the flea at time 3 secs. Answer: position - 3^3 - 9(3)^2 + 24(3) = 18

  41. math

    A flea is very difficult for the human eye to see. Jose looks at a drawing of a flea in a book. The drawing uses the scale 5:1. The actual length of a flea is 2 mm. How long is the drawing?

  42. Integral Calculus

    A typical flea jumps vertically w/an initial velocity of about 5ft/s. How much does the flea jump? Ans. 65/64ft or 4.7in.. pls show the solution and explain.. thanks a lot.. :)

  43. Math (Combinatorics)

    In the plane, the points with integer coordinates are called lattice points. Suppose a flea in the plane jumps from one lattice point to another. Each jump is one unit to the right, one unit to the left, one unit up, or one unit down. If the flea starts at

  44. Business

    On average, how many people go to a flea market per day? Or specifically in new york flea market?

  45. Physics

    For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.1 mm-long, 0.46 mg critter can reach a height of 17 cm in a single leap. A) Neglecting air drag, what is the takeoff speed of such a flea? I don't understand how

  46. MATH

    The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. A flea is sitting on top of the stake eyeing the kangaroo (hungrily). The kangaroo sees the flea leaps into the air and lands one mile from the stake (with its tail

  47. math

    The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. A flea is sitting on top of the stake eyeing the kangaroo (hungrily). The kangaroo sees the flea leaps into the air and lands one mile from the stake (with its tail

  48. math

    an average adult flea can jump 200 times the lenght of its own body. An adult flea is about 0.1 inch long. About how many feet can the average adult flea jump?If you were able to jump 200 times your height, about how many yards would you be able to jump?

  49. Physics

    A flea pulls on a puck with force 7 microN at an angle of 30°. Another flea pulls on the puck with force 2 microN at an angle of -60°. a) What is the magnitude of the net force on the puck? (I got 7.28 uN) b)At what angle is the net force? ( I got about

  50. physics, I'm stuck

    It takes a flea 1.0x10–3 s to reach a peak speed of 0.74 m/s. (a) If the mass of the flea is 0.45x10–6 kg, what is the average power required? (b) Insect muscle has a maximum output of 60 W/kg. If 20% of the flea’s weight is muscle,

  51. History-Aristophanes Clouds and Science

    My assignment for history is to pick one of the following examples from aristophanes clouds and explain how it may seem silly, but it is actually scientific. I don't know how I can explain these scientifically. 1. The example of the flea. (Socrates asked a

  52. Math

    Ryan Miller wanted to make some money at a flea market. He purchased 55 small orchids from a nursery for a total of $233.75, three bags of potting soil for $2.75 each, and 55 ceramic pots at $4.60 each. After planting the orchids in the pots, Ryan sold

  53. English

    1. The flea market is open every 4th Saturday. 2. The flea market is open every four Saturdays. 3. He takes a shower every second day. 4. He takes a shower every two days. ........... #3 and #4 are the same. What about #1 and #2? Are both the same as well?

  54. Proportion

    A flea 1/16 of an inch tall can jump 9 3/8 inches high. If a person five feet tall could jump like a flea, how high could she jump? Careful: Feet are not inches.

  55. math

    At a flea market, 5 out of twelve vendors are selling antiques. What is the decimal equivalent of 5/12

  56. Algebra

    In the correctly worked subtraction problem, each letter represent a different digit. what is the largest possible value of E? FLEA - BEE ------- MOLE

  57. Math - Algebra

    In the forrectly worked subtraction problem below, each letter represents a different digit. What is the largest possible value of E? FLEA - BEE _____ MOLE

  58. physics

    Now, three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now the elevator is moving downward with a velocity of v = -2.9 m/s but

  59. physics

    What is the distance the lower spring is extended from its unstretched length? three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now

  60. physics

    A rocket moves straight upward, starting from rest with an acceleration of +25.5 m/s2. It runs out of fuel at the end of 4.26 s and continues to coast upward, reaching a maximum height before falling back to Earth. (a) Find the rocket's velocity and

  61. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

  62. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

  63. physics

    If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?

  64. Physics

    You stand on a bathroom scale that rests on the floor of an elevator. Standing on the scale compresses internal springs and activates a dial that indicates your weight in newtons. When the elevator is at rest, the scale reads 600 N. Then the elevator

  65. Physics

    Starting from rest, a 1.7x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.44 N on it. This force does 2.4x10-4 J of work on the flea. (a) What is the flea's speed when it

  66. Physics

    Starting from rest, a 2.4x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 1.5x10-4 J of work on the flea. (a) What is the flea's speed when it

  67. Physics

    Starting from rest, a 1.7x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.45 N on it. This force does 1.9x10-4 J of work on the flea. (a) What is the flea's speed when it

  68. Phys

    Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.38 N on it. This force does 2.6x10-4 J of work on the flea. (a) What is the flea's speed when it

  69. Physics

    Starting from rest, a 1.6x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.42 N on it. This force does 3.6x10-4 J of work on the flea. (a) What is the flea's speed when it

  70. PHYSICS

    Starting from rest, a 2.0 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.36 N on it. This force does +2.5 10-4 J of work on the flea. -How far does the flea move while

  71. Math

    The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. A flea is sitting on top of the stake eyeing the kangaroo (hungrily). The kangaroo sees the flea leaps into the air and lands one mile from the stake (with its tail

  72. Language Arts

    When You Paraphrase A Line Of Poetry, What Do You Do a.You turn it into a question b.You put it in your own words c.You add humor to it d.You copy it down exactly Choose the best paraphrase of these lines from the limerick Said the fly, let us free let us

  73. math

    I am looking at following question: Anna is 1.8m tall and her pet flea is 1.8mm tall. How many times is Anna taller than her pet flea? the answer of the book is 1.8x1000/1.8=1000 but I am afraid that it is not correct. it should be that Anna is 1000 times

  74. Math (Combinatorics)

    In the plane, the points with integer coordinates are called lattice points. Suppose a flea in the plane jumps from one lattice point to another. Each jump is one unit to the right, one unit to the left, one unit up, or one unit down. If the flea starts at

  75. physics

    Fleas can jump quite high; experiments show that they reach an altitude of 130 times their own height when they jump vertically! Suppose instead that a flea can jump so that it lands a maximum distance of 19.60 cm away. What is the take-off speed for this

  76. Math

    A common flea that is 2 to the negative force inches long can jump about to cubic inches high about how many times its body size 10 the flea jump

  77. business math

    Ryan Miller wanted to make some money at a flea market. He purchased 55 small orchids from a nursery for a total of $233.75, three bags of potting soil for $2.75 each, and 55 ceramic pots at $4.60 each. After planting the orchids in the pots, Ryan sold

  78. Physics

    A 2.1 mm-long, 0.46 mg house flea can reach a height of 17 cm in a single leap. I've found that, neglecting air speed, v = 1.8 m/s How do I calculate the kinetic energy of this flea at takeoff & its kinetic energy per kilogram of mass? (to get K = __ J)

  79. physics

    If a flea can jump straight up to a height of 0.310 m, what is its initial speed as it leaves the ground? How long is it in the air?

  80. Math

    A flea 1/16 of an inch tall can jump 9 3/8 inches high. If a person five feet tall could jump like a flea, how high could she jump?

  81. Math

    Ryan Miller wanted to make some money at a flea market. He purchased 55 small orchids from a nursery for a total of $233.75, three bags of potting soil for $2.75 each, and 55 ceramic pots at $4.60 each. After planting the orchids in the pots, Ryan sold

  82. Physics

    A flea can jump a vertical height h. What is the maximum horizontal distance it can jump? What is the time in the air in both cases?

  83. English

    There is something for everyone at Green Flea Market. ========================= What is the meaning of 'something' here? Is it #1 or #2? The following are dictionary definitions. 1. an object, situation, quality, or action that is not exactly known or

  84. Physics

    Starting from rest, a 2500 kg helicopter accelerates straight up at a constant 1.7 m/s2. What is the helicopter's height at the moment its blades are providing an upward force of 29 kN? The helicopter can be modeled as a 2.6-m-diameter sphere. How do you

  85. physics

    Now, three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now the elevator is moving downward with a velocity of v = -2.9 m/s but

  86. science

    Now, three masses (m1 = 3.1 kg, m2 = 9.3 kg and m3 = 6.2) hang from three identical springs in a motionless elevator. The springs all have the same spring constant given above. Now the elevator is moving downward with a velocity of v = -2.9 m/s but

  87. Biomechanics

    While pushing off against the starting blocks at the beginning of a race, Olympic swimming great Michael Phelps generates a force that increases linearly from 0 N to 800 N over the first 0.30 s, and then decreases steadily back to 0 N over the remaining

  88. English

    1. I cleaned and ironed my little brother's clothes and sold them all. (Does the sentence mean "I" washed the clothes? Or without washing clothes, did I clean the state of the clothes?) 2. Last Saturday, I sold some of my mom's old dresses. For the whold

  89. algebra 2

    At a flea market held each weekend, an artist sells handmade earrings. The table below shows the average number of pairs of earrings sold for several prices. Given the pattern in the table, how much should the artist charge to maximize revenue? Table:

  90. Algebra

    At a flea market held each weekend, an artist sells handmade earrings. The table below shows the average number of pairs of earrings sold for several prices. Given the pattern in the table, how much should the artist charge to maximize revenue? Table:

  91. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

  92. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

  93. physics

    A rocket moves upward, starting from rest with an acceleration of 26.3 m/s2 for 3.91 s. It runs out of fuel at the end of the 3.91 s but does not stop. How high does it rise above the ground?

  94. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

  95. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

  96. physics

    A rocket moves upward, starting from rest with an acceleration of 28.1 m/s2 for 4.76 s. It runs out of fuel at the end of the 4.76 s but does not stop. How high does it rise above the ground?

  97. English

    posted by rfvv Monday, June 18, 2018 at 4:52pm 1. The flea market is open every 4th Saturday. 2. The flea market is open every four Saturdays. 3. He takes a shower every second day. 4. He takes a shower every two days. ........... #3 and #4 are the same.

  98. Math

    At the flea market Ned found 9 buckets of Legos with each bucket containing 1,736 Lego pieces. If he wanted to split the Lego pieces into 8 piles, how many pieces should he put into each pile?

  99. PHYSICS

    If a 71.0 kg , 1.70 m -tall human could jump to the same height compared with his length as the flea jumps compared with its length, how high could he jump, and what takeoff speed would he need?

  100. physics

    An 8.0 kg bag of coin is being pulled upward by a rope rises 20.0 cm in 0.50 sec, starting from rest. Assuming the acceleration is constant, calculate the net force on the bag. what is the upward force on the bag exerted by the rope?

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