A 60kg boy climbs 70 fligts of stairs each 20cm high in one minute how much powers is developed?

18,559 results
  1. physics

    At what rate is a 60.0-kg boy using energy when he sprints up a flight of stairs 10.0 m high in 8.00 s? A. 75.0 W B. 48.0 W C. 735 W D. 480 W E. 4.80 kW

  2. Physics ~please help me~

    1.) Two people of the same mass climb the same flight of stairs. The first person climbs the stairs in 25 s; the second person does so in 35 s. a) Which person does more work?Explain b) Which person produces more power?Explain 2.) Lee pushes a 20 kg mass

  3. maths

    a small ant climbs 3cm in 1 minute but slips down 2cm. how much time will it take to climb 4cm

  4. math

    The equation y = 1.6x represents the number of laps Henry can swim over time, where y is the number of laps and x is time in minutes. The table shows the number of laps Larry can swim over time. How many laps can each boy complete per minute, and who can

  5. physics

    A boy of mass 50kg runs up a set of stairs of total height of 3.0m.find the work done against gravity

  6. Chemistry 22

    which illustrates in an increase in potential energy? a. a firecracker explodes b. a person climbs a set of stairs c. a wind-up toy winding down d. an apple dropping from a tree

  7. physics

    A man whose mass is 70 kg walks up to the third floor of a building. This is a vertical height of 12 m above the street level. (a) How many joules of work has he done? (b) By how much has he increased his potential energy? (c) If he climbs the stairs in 20

  8. physics

    A boy jumps from a wall 3m high. What is an estimate of the change in momentum of the boy when he lands without rebounding? the answer is 5x10^2kg/ms, but how?

  9. physics

    A man whose mass is 75kg walks up a stairs each 20cm high in5seconds.calculate the power expended in watts.[assume g=10m\s2

  10. 4 grade

    A snail climbs up a wall 20 feet high. Each day the snail climbs 5 feet, but each night it slips backwards 4 feet. How many days will it take for the snail to get to the top of the wall?

  11. physics

    A boy wants to jump onto a moving carousel that is spinning at a rate of 5 revolutions per minute. If the carousel is 64 ft in diameter, how fast must the boy run, in feet per second, to match the speed of the carousel and jump in? Round your answer to two

  12. physics

    A woman with a mass of 65kg climbs a set of stairs that are 3m high. How much gravitational potential energy does she gain? Thank you.

  13. science

    A 80 kg firefighter climbs flight of stairs 6 meter high in 10 seconds. How much work is required by the firefighter?

  14. physics

    a boy weighing 350N runs up a flight of stairs consisting of 20 steps each 10cm high in 10 seconds. What is his power? show your workings

  15. Maths

    An ant tries to climb the water pipe 10m high,it climbs 2m up and slips back 1m down in every move. In how many moves will it reach the top of the 10m high pipe

  16. physics

    You have a mass of 60 kg and run up some stairs that are 5 m high in 6 seconds. How much power did you produce?

  17. physics

    a boy with a mass of 60kg climbs a 10m vertially up a ladder. A) how far did he travel? B) how much work is done? C) what are the energy changes here?

  18. physics

    A 680 newton student runs up a flight of stairs 3.5 m high in 11.4 seconds. The student takese 8.5 seconds to run up the same flight of stairs during a second trial. 1)Find the work done by the 680 N student in climbing the stairs 2) Determine the power

  19. discrecte structure

    Calvin stays on the 7th floor in his building. Between each floor, there are exactly 12 stairs. If he starts from the 1st floor and climbs his way up to the 7th floor, how many stairs does he climb?

  20. Physics

    A load of 60kg is pushed up a 400m inclined plane of a platform 3m high, what is the velocity ratio of the plane

  21. physical Science

    Two people who weigh the same climb a flight of stairs. The first person climbs the stairs in 30 s, while the second person climbs them in 40s. Which person does more work? Which uses more power?

  22. Physics

    a boy whose weight is 600 N runs up a flight of stairs 10 m high in 12 second .What is his average power?

  23. Physics

    A 77 kg man climbs the stairs to the fifth floor of a building, a total height of 15.2 m. What is his potential energy in Joules when he reaches the fifth floor? Round your answer to 1 decimal place.

  24. Maths

    An insect climbs 10m slippery rock in a minute and then slips down 9m in the next minute. How long will it take him to climb a 30m slippery rock?

  25. Math Olympiad

    Lara starts at the bottom of a long staircase. She climbs exactly 2/3 of the stairs. Then, she goes back down exactly 1/2 of the way to the bottom. From that spot, she climbs exactly 2/3 of the way to the top. Finally from there, she climbs 6 stairs to

  26. Physics

    A 74.0 kg firefighter climbs a flight of stairs 12.0 m high. How much work is required?

  27. Science

    A 60 kg woman climbs a flight of stairs 5,0 m high how much work is required

  28. physics

    A golf bounces down a flight of steel stairs, striking several steps on the way down, but never hitting the edge of a step. The ball starts at the top step with a vertical velocity component of zero. If all the collisions with the stairs are elastic, and

  29. Maths

    There are 36 pupils in a class. Each girl is given 8 books and each boy is given 3 books. The total number of books the girls receive is 46 more than the total number of books the boys receive. How many girls are there in the class? The ratio of the number

  30. physics

    A boy with a mass of 50 kg climbs 40m vertically when walking up the stairs of the campus. How much work does he do against gravity?

  31. PHYSICS

    A 69.0 firefighter climbs a flight of stairs 22.0 high. How much work is required?

  32. Math

    The second flight of stairs is two times as high as the first flight of stairs. Together they are 60 feet high, how high is the first flight of stairs.

  33. ST MICHAEL NURSERY SECONDRY AND PRIMARY SCHOOL KONTAGORA

    BASIC SCIENCE. A BOY OF MASS 50KG RUNS UP A FLIGHT OF 10 STAIRS EACH OF HEIGHT 0.2M IN 5 SECONDS CALCULATE HIS POWER.

  34. math

    An elf has a staircase with 10 steps to climb. Each step it takes can cover either one stair or two stairs. In how many ways can the elf climb the stairs? For n stairs?

  35. Physics

    An 78.9 kg person carries a 23 N package up a flight of stairs. The vertical height of the stairs is 23.8 m. How much work is done?

  36. Math

    In a 36-minute gym period, 24 boys want to play basketball. If only 10 can play at the same time, and each boy plays the same amount of time, how many minutes does each boy play?

  37. PHYSICS

    A BOY OF MASS 50KG CLIMBS UP 29 STEPS EACH 20CM HIGH.HOW MUCH WORK IS DONE BY THE BOY (G=10M/S)

  38. Physical Science

    Two people who weigh the same climb a flight of stairs. The first person climbs thestairs in 30s, while the second person climbs them in 40s. Which does more work? Which uses more power?

  39. physics

    A boy on ice skates is atationary on a frozen lake(no friction).He throws a package of mass 5kg at 4m/s horizontally east.the mass of the boy is 60kg.at the instant the package leaves the boy's hand,the boy starts moving. Calculate the magnitude of the

  40. maths

    Calvin stays on the 7th floor in his building. Between each floor, there are exactly 12 stairs. If he starts from the 1st floor and climbs his way up to the 7th floor, how many stairs does he climb?

  41. English

    English posted by rfvv yesterday at 2:39am 1. I saw a boy in the car. 2. When I saw a boy, I was in the car. 3. I saw a boy who was in the car. At that time I was near the car. [Does #1 mean either #2 or #3 according to the context? Which one is a common

  42. English

    I urgently need you to check these sentences, please. 1.The second boy on the left is wearing a yellow T-shirt and khaki bottoms with pockets in both sides. The third boy is wearing a pair of white linen trousers with black knee- high gaiters and hiking

  43. physics

    A boy wants to jump onto a moving carousel that is spinning at a rate of 5 revolutions per minute. If the carousel is 64 ft in diameter, how fast must the boy run, in feet per second, to match the speed of the carousel and jump in? Round your answer to two

  44. maths

    A monkey ascends a greased pole 30 m. high. He ascends 3 m. in Ist minute and descends 1m. in the next minute, again ascends 3m. in 3rd minute, but descends 1m. in 4th min and so on. In what time he reached the top?

  45. science equations

    a boy standing n a high cliff dives into the ocean below and strikes the water after 2.5 s. what is the boy's velocity when he hits the water? deltav=gxt

  46. physics

    (a) calculate the number of kilocalories needed to climb 232 stair steps (116 steps per minute for 2 min.) *climbing stairs (116/min.) = energy consumption rate is 9.8 (kcal/min) * (b) calculate the gain in gravitational potential energy for a 50-kg person

  47. physics

    A 60kg boy climbs 70 fligts of stairs each 20cm high in one minute how much powers is developed?

  48. physics

    jeritex mass is 60kg. if he climbs up the flight of stairs 13 meters high in 20 seconds, what is his power output?

  49. physics

    a boy who can generate 500 w runs up a flight of stairs in 5.0 s.how high are the stairs if the boy has a mass of 62 kg.

  50. Math

    larry starts at the bottom of a long staircase. he climbs exactly 2/3 of the stairs. then he goes back down exactly 1/2 of the way to the bottom. from that spot he climbs exactly 2/3 of the way to the top. finally from there he climbs 6 stairs to reach the

  51. energy

    A boy weighing 350Newton runs up a flight of stairs consisting of 20 stairs each, 16 centimeter high in seconds, what ??$ it's power?

  52. Physics for Life science

    A boy climbs up an 8.00m high tree. To come back down, the boy slides down along a rope. The coefficient of friction between the rope and the boy is 0.40. What is the velocity with which the boy reaches ground?

  53. Physical Science

    Is this correct? Gabriella weighs 450 N. She climbs a flight of stairs to a height of 3 m. It takes her 5 seconds. How much work does Gabriella do when she climbs the stairs? Ans- 1,350 J. What I did was 450*3 Can someone check this? Thanks -MC

  54. Physics

    Electric stairs bring people up from Newyork metro station. Calculate the power consumption of the stairs during the rush hour if the stairs elevate 120 persons per minute up to the street level 30 meters above. Assume that the average weight of passengers

  55. Mathematics

    Can someone explain how to do this please? A person who has a mass of 60kg run up a flight of stairs 12m high in 20 seconds, how much power did the person generate? How would I do this equation.

  56. Physics

    Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power

  57. Physics

    Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power

  58. physics

    A man whose mass is75kg walks up a stairs of 12steps each 20cm high in 5seconds.calculate the power expended in watts.[assume g=10m\s2

  59. physics

    How much power is developed by a 68kg boy running up a 5 high flight of stairs un 4s?

  60. Math

    A boy whose height is 7.3 N runs up a flight of stairs 4.5 m high in 8.5s. What is his average power

  61. physics please help

    the floors in a typical house are separated by a vertical distance of approximately 8.0 ft. a teenager (1.0x 10^2 lb) climbs the stairs between floors at a steady speed. find the power necessary to accomplish this if the stairs are climbed in (a) 10.0 s

  62. Math

    Tim and Rich are racing up a 25-foot wall. Tim climbs at 8 inches per minute and Rich climbs at 10 inches per minute. If Tim has a 5 minute head start, by how many SECONDS does the winner beat the other?

  63. PHYSICS:

    A boy weighing 350N runs up a flight of stairs consisting of 20 steps each 10 cm high in 10 seconds.what is his power?

  64. Physics

    A boy weighing 350 N runs up a flight of stairs consisting of 20 steps each 10 cm high in 10 seconds. What is power?

  65. Math

    Once there four boys who wanted to cross a street. They were all on the same side. It was night time and they only had one flashlight between them. Only two boys can cross the street at a time, and anyone who crosses , either one or two people, must always

  66. science

    A Boy of mass 25 kg climbs atop a playground slide of height h= 3 m. When the boy slides down the inclined board, the work done to overcome friction is 550 Joule. What is the boy’s speed before he touches the ground.

  67. science

    a boy whose mass is 69kg climbs a tree 10m high in 12s .calculate the work done and power developed

  68. Physics

    A boy weigh 350 new ton runs up a flight of stairs consisting of 20 steps each 10cm high in ten seconds.what is his power

  69. Physics

    Two men of the same mass climb the same flight of stairs. The first man climbs the stairs for 25 seconds, while the seconds person takes 35 seconds. Which man does the most work?

  70. physics

    A person with a mass of 60kg climbs up to a diving board 4 meters above a swimming pool. what is the divers speed when entering the water? A 8.9m/s b 6.2m/s c 4.4m/s d 3.3m/s e 2.1 m/s

  71. Math

    A small ant trying to cross a pole of12 cm . It climbs 3 cm in one minute and slips 2cm in second minute

  72. physics

    An ant climbs up 5 stairs, each of width 20 cm and height 20 cm . Find the distance covered and displacement of ant ?

  73. Physics

    A child climbs up a set of stairs and reaches a height of 2.5m what is the child's gain I potential energy ?

  74. physics

    A 60kg boy is riding his bike to school. His acceleration is 15 m/sec^2. Determine the magnitude of the force he is exerting.

  75. math

    an airplane climbs at a rate of 66.8 feet per minute. It descends at twice the rate that it climbs. Assuming it descends at a constant rate, how many feet will the aitplane descend in 30 minutes.

  76. physics

    A student of mass 64.7 kg climbs up the stairs in the Physics Department, with a vertical height change 3.1 metres. What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures.

  77. college physics

    A student of mass 64.7 kg climbs up the stairs in the Physics Department, with a vertical height change 3.1 metres. What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures.

  78. physics

    a person carries a 58kg package of books up a flight of stairs the length along the stairs is 24 meters the vertical height of the stairs is 12 meters how much work is done in raising the package I know the answer is 6800 J but how to get????

  79. Physics

    How much work is done by a boy weighing 450. Newtons while carrying a 20.0 kilogram package up a 2.00 meter flight of stairs?

  80. math

    Search results for "a monky climbs 4 metres of a pole in 1 minute, but slips 2 metres in next minute.in how much time he will reach the top of a pole 15 metres long?assume that he starts from the bottom of the pole."

  81. Vector

    A boy can swim with a speed of 26metre per minute in still water. Be wants to swim across a 150metere wide river from point A to point B directly opposite on the other side of the River.The river flows at 10metre per minute (a)if he always swims in the

  82. science

    a 60.0kg boy runs up the stairs of a football stadium to a height of 12m above the ground 15s.what are the work and power student has done

  83. Physics

    A girl of mass 50Kg runs up a flight of steps. There are 20 steps on the stair case and each step has a height of 20cm. What is the total height of the stairs in metres?[2]

  84. PHYSIC

    a 60kg painter climbs a ladder, he goes 5.00m. The ladder makes an angle of 70 degrees. (g = 9.8 m/s^2). a) How much work is done by the painter in ascending the ladder? b) The painter drops 1.0kg pain bucket from the top of the ladder (length = 5m..not

  85. Science

    A boy of mass 50kg,climb a hii of 5m high,calculate the power use {1}when the boy used the total time of 20s.[g:10m/s]

  86. math

    A snail climbs a wall that is 16 feet high. Each day the snail climbs 5 feet, but each night it slips back down 3 feet. How many days will it take for the snail to get to the top of the wall

  87. math

    A boy is cycling such that the wheels of the cycle are revoloving 140 times per minute.if the diameter of the wheel is 60 cm,calculate the speed per hour with which the boy is cycling. Find answer in km per hour

  88. Math

    I can't figure this out! Help please! The Problem At the local park, I saw a man was quizzing a boy with some simple arithmetic problems, and the boy seemed to be getting them all correct. He asked the boy, "32 + 5", and the boy answered, "37". The man

  89. Physics

    A Boy Of 20KG Climbs 10m.Take 10m/s. Calculate the workdone,

  90. Physics

    How much work does a 50 kg student to climb 3 meters high stairs

  91. Physics

    A 60 kg person utilizes energy at 0.25 horsepower while running up the stairs of a building. Each step is 20 cm highly. How much work does the person do in one minute?

  92. Physics! NEED HELP!

    A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?

  93. Physics!

    A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?

  94. maths

    A monkey ascends a greased pole 30 m. high. He ascends 3 m. in Ist minute and descends 1m. in the next minute, again ascends 3m. in 3rd minute, but descends 1m. in 4th min and so on. In what time he reached the top?

  95. Physics

    A boy climbs to the roof of his house and drops a 0.40 kg rubber bll from the 7.5-meter peak of the house. how fast will the ball be travelling when it hits the ground? a. 15 m/s b. 24 m/s c. 30 m/s d. 12 m/s

  96. English Grammar

    Correct these sentences, if necessary! 2) Tommy Boy acted like a child and was treated like a child. 4) Tommy Callahan was a simple guy and nothing seemed to go his way 6)The movie is about Tommy Boy a college graduate that has to run the family business

  97. physics

    A 32 kg girl runs up a flight of stairs that is 30 m high. How much work does this require? Not sure how to even start

  98. Math

    A set of stairs has a rise of 6 inches and a run of 9 inches. The building safety code says the stairs should rise at an angle of between 30 degrees and 35 degrees. Does this set of stairs meet the safety regulations? Justify your answer by showing

  99. Science physics

    What is the magnitude of average force a pole vaulters exterts on a landing bag if it's 1.5 meters high and deforms by 0.5 M=60kg Height of the bar=4.5m His centre of mass is 1m

  100. science

    if your weight is 132 pounds, how much work is done if you climb a flight of stairs 12 meters high ?

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