# You've dropped a lucky penny into the middle of a hemispherical water basin of radius 3m. There is a light on the upper edge of the basin. The penny falls vertically along the axis of symmetry of the basin, and

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1. ## calc

You've dropped a lucky penny into the middle of a hemispherical water basin of radius 3m. There is a light on the upper edge of the basin. The penny falls vertically along the axis of symmetry of the basin, and when it is 1m from the bottom of the basin it
2. ## Calculus

You've dropped a lucky penny into the middle of a hemispherical water basin of radius 3m. There is a light on the upper edge of the basin. The penny falls vertically along the axis of symmetry of the basin, and when it is 1m from the bottom of the basin it
3. ## Science

Water is pumped from a stone basin up through a pipe 1 meter high. At that height, the water flows out through a tap and falls down through the air to the basin below, where the cycle begins again. What is the gravitational potential energy of 2.5
4. ## Science

According to the fossil record shown, how did the Bighorn Basin environment change from 55.85 to 55.75 million years ago? Highlight the correct answer choice. (1 point) A. Over time, less plant life covered the basin. B. Over time, more plant life covered
5. ## Hydrology

I have no idea how to calculate this, I just need some direction please (like an equation)? Consider a drainage basin 187 km2. How much water is produced (m3) if 2.5 inches of rain falls on the basin? How many people could be supported on the water
6. ## Geography

i need to label a diagram of the drainage basin of the River Tees. the words i have got to use are:- Tributary Mouth Confluence Source Reservoir Also i need to colour the diagram to show the relief of the drainage basin. A)Shade the river and its
7. ## Geography

1.1.1define the term drainage basin 1.1.2what is the difference between drainage basin and catchment area? 1.1.3 name any two water management areas in south africa. 1:2 THE IMPONTANCE OF MANAGING DRAINAGR BASIN CATCHMENT AREAS IN SOUTH AFRICA SHOULD BE A

In which region do rivers flow into a basin but evaporate before they make it to a larger body of water? A.the Coastal Plains B.the Great Plains C.the Great Basin D. the Everglades Thank ya!!! <3
9. ## Algebra---Variation

It is a variation problem. I know what the answer is and how to get to the answer I just don't know how I got it. From measurements on many rivers, geographers find that the length of a river that drains a particular "basin" of land is approximately
10. ## mechanics

Drops of water leak from a tap 2m above the basin at regular intervals.As the first drop strikes the basin the fourth drop starts its fall.what is the spacing between the drops 1and 2,drop 2and3,drop 3and4 at this instant.
11. ## Math

Take the greatest care with your significant digits. If you don't this qusestion is not do able. Llyn Gweision ( A welsh lake) has a surface area of 10km2. It is fed by two rivers: the afron Chwefru and the nant aeron. The Chwefru has a catchment area of
12. ## Physics- Accleration of a Falling Penny

A visitor to the observation deck of a skyscraper manages to drop a penny over the edge. As the penny falls faster, the force due to air resistance increases. How does this affect the acceleration of the penny? a. The acceleration decreases b. The
13. ## Environmental science

Llyn y Gweision (a Welsh lake) has a surface area of 10 km2. It is fed by two rivers: the Afon Chwefru and the Nant Aeron. The Chwefru(Ich) has a catchment area of 1250 km2. The Aeron(Iae) has a catchment area of 2.400 * 106 ha. The outflow stream, the
14. ## MATH/SCIENCE

Llyn y Gweision (a Welsh lake) has a surface area of 10 km2. It is fed by two rivers: the Afon Chwefru and the Nant Aeron. The Chwefru(Ich) has a catchment area of 1250 km2. The Aeron(Iae) has a catchment area of 2.400 * 106 ha. The outflow stream, the
15. ## Environmental Science

Take the greatest care with your significant digits. If you don¡¦t, this question is not ¡§do-able¡¨. Llyn y Gweision (a Welsh lake) has a surface area of 10 km2. It is fed by two rivers: the Afon Chwefru and the Nant Aeron. The Chwefru has a
16. ## ENVIRONMENTAL SCIENCE ( math/science)

Llyn y Gweision (a Welsh lake) has a surface area of 10 km2. It is fed by two rivers: the Afon Chwefru and the Nant Aeron. The Chwefru(Ich) has a catchment area of 1250 km2. The Aeron(Iae) has a catchment area of 2.400 * 106 ha. The outflow stream, the
17. ## physics

A penny is dropped from a 300ft high bridge. a. How long does it take for the penny to reach the ground below? b. What is the velocity of the penny upon impact?
18. ## physics

A penny is dropped from the top of a building 310 m high. Ignoring air resistance, if the penny falls straight down, with what speed would it hit the ground?
19. ## Physics

A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.50 s. Find the minimum coefficient of friction necessary to allow the penny to
20. ## Physics

A penny is placed at the outer edge of a disk (radius = 0.159 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.50 s. Find the minimum coefficient of friction necessary to allow the penny to
21. ## physics

A penny is placed at the outer edge of a disk (radius = 0.119 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.70 s. Find the minimum coefficient of friction necessary to allow the penny to
22. ## physics

a penny is placed at the outer edge of a disk(radius =0.150m) that rotates about its axis perpendicular to the plane of the disk at its center. the period of rotation is 1.80s. find the minimum coefficient friction necessary to allow the penny to rotate
23. ## Physic

In a dramatic lecture demonstration, a physics professor blows hard across the top of a copper penny that is at rest on a level desk. By doing this at the right speed, he can get the penny to accelerate vertically, into the airstream, and then deflect it
24. ## physics

A penny falls from a windowsill 25.0 m above the sidewalk. How fast is the penny moving when it strikes the ground? (Remember that the velocity will be negative due to the downward motion of the penny)
25. ## social studies

Name the 5 regions that the U.S. is divided into. There are many ways to do this dividing. One would be: far west (including rocky mt. states) midwest (including Texas) south midatlantic New England Another, more based upon topography, would be: Pacific
26. ## Physics

A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?
27. ## Physics

A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?
28. ## Math

A penny is dropped onto a rectangular surface. If it is equally likely for the penny to land anywhere inside the large rectangle, what is the probability that all or part of the penny will come to rest inside the shaded area? Round your answer to the
29. ## math

Take the greatest care with your significant digits. If you don’t, this question is not “do-able”. Llyn y Gweision (a Welsh lake) has a surface area of 10 km2. It is fed by two rivers: the Afon Chwefru and the Nant Aeron. The Chwefru has a catchment
30. ## Algebra 1

A penny is dropped from the top of a 345 foot building. Time is being measured in seconds. A.) Write an equation that models the scenario B.) How far is the penny from the ground after 2 seconds? C.) How long does it take the penny to reach the ground?
31. ## CHEMISTRY

what do you observe if you drop water to a basin of water? Explain please
32. ## Physics

A penny is placed on a disk that is rotating at 2 revolutions per second. The coefficient of friction between the penny and the disk is 0.4. What is the maximum radius at which the penny will stay on the disk? a. 2.5cm b. 100cm c. 1cm d. 10cm e. 25cm
33. ## science

What happen to the water in the basin when you placed a drop of water?
34. ## Science

While Carmen is at the park with her family, she walks up to a wishing well. She throws a penny down the well, and she hears a splash at the bottom. Which of the following best describes what happens as the penny falls? A)The force of gravity is equal to
35. ## Science

While Carmen is at the park with her family, she walks up to a wishing well. She throws a penny down the well, and she hears a splash at the bottom. Which of the following best describes what happens as the penny falls? A)The force of gravity is equal to

Bob has a brother, Jim, who has a daughter named Bertha. Bertha's daughter, Jennifer, has a sister named Penny. Which of the following indicated the relationship between Jim and Penny? a. Jim is Penny's father b. Jim is Penny's uncle c. Jim is Penny's
37. ## science

if you place a dime penny and quarter on a spinning turntable which coin has a greater speed than the penny than the penny
38. ## geography

what is the drainage basin
39. ## science

The turntable below is spinning. Which coin has a greater speed than the penny? a. the dime b. the quarter c. The penny is moving faster than both of the other coins. c. All three objects are moving at the same speed. pennyis closest to center dime in
40. ## algebra

A man tosses a penny up into the air above a 100 ft well with a velocity of 5 ft/sec. The penny leaves his hand at a height of 4 ft. How long will it take for the penny to reach the bottom of the well?
41. ## Physics

A penny rests on top of a bowling ball. You give the bowling ball a slight bump and the penny slides off the frictionless, spherical surface as shown below. At what angle θ does the penny leave the surface of the bowling ball? (Hint: When the penny
42. ## geography

Which sentence below is a cause-effect statement? Nigerian students and workers often protested during the structural adjustment period. One of the surprising facts about West Africa is that the Sahara was not always a desert. Because of their location,
43. ## modisha

Ways how to restore a drainage basin
44. ## geography

Why is the Amazon basin ecologically so important?
45. ## Geography

Why is the amazon basin ecologically so important
46. ## geo

Why is amazon basin ecologically imp.
47. ## math

John tosses a penny 10 times and finds that 2 of those times the penny comes up heads and 8 of those times the penny comes up tail. What should John conclude? a.That the expected relative frequency probability of getting heads when tossing a penny is 2/10.
48. ## social science

why is the amazon basin ecologically so important
49. ## social studies

why amazon basin is ecologically so important?
50. ## science

where are the deepest parts of the pacific basin located?
51. ## Geography

i was asked to label the features of a river basin
52. ## math

Sara brought a total of 8 nails at ace hardware . she purchased both 6 penny nails and 10 penny nails . she brought 2 more 6 penny nails then she did 10 penny nails . she had a total of 8 mails. How many 6 penny and 10 penny nails did sara purchase

I NEED HELP TO FIND PENNY STOCKS AT NASDAQ. Penny stocks usually sell for less than \$1.00 a share -- although some investors consider any stock selling for less than \$5.00 a share a penny stock. Please check with your instructor to see how s/he wants you
54. ## physics

A penny is dropped from rest from the top of the Trump Tower in New York City. Considering that the height of the building is 283 m and ignoring air resistance, find the speed with which the penny strikes the ground.
55. ## algebra

Sara bought some 6-penny nails and some 10-penny nails at ace hardware. She bought 2 more 6-penny nails than she did 10-penny nails. She had a total of 8 nails. How many 6-penny and 10 penny nails did sara purchase?
56. ## Calculus

if a penny is dropped from the top of a 320 ft. building, how fast will it be moving when it hits the ground? So we can find the speed of the penny as instantaneous rate of change of height of penny when it hits ground. Instantaneous rate of change of y
57. ## physics

a penny dropped from the Empire state building. how far does the penny drop in 6 seconds? how fast will it be moving after 10 seconds?
58. ## physics

Here were two tricky questions. Please provide steps. Answers are not necessary (since these are practice questions for an exam). 1.) The centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a
59. ## physics

Here were two tricky questions. Please provide steps. Answers are not necessary (since these are practice questions for an exam). 1.) The centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a
60. ## Science

Identify and describe the features found in the ocean basin floor
61. ## science

what causes volcanoes in the Pacific Ocean basin?It is called the ring of fire.
62. ## physics

A man stands at the top of a 27-m high building and throws a penny straight downward. If the penny has an initial velocity of -3.9 m/s, what is the velocity of the penny in m/s when it hits the ground?
63. ## Algebra2

Pepe throws a penny off the empire state building. The penny's height above ground can be modelled using the equation h=-16.1t^2+5t+1250 where t is time in seconds. How high is Pepe when he throws the penny? How many seconds does it take the penny to hit
64. ## Math

Suppose we are standing on top of a 300-ft tower and we are holding a shiny new penny.We do not hurt it down, for that would be dangerous and wrong! We toss it up at a velocity of 10 feet per second and then when it comes down it just happens to plummet to
65. ## physics

a penny is placed .1 m from the center of a turntable. if the coefficient of static friction between the penny and the turntable is .5, the maximum linear speed at which the penny can travel without slipping is approximately a) .49m/s b) .7 m/s c) 1.3 m/s
66. ## Physics

A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 406 m and ignoring air resistance, find the speed with which the penny strikes the ground.
67. ## English

Select the letter of the choice that identifies the underlined compliment 1. The onset of winter gives skiers a wonderful feeling of anticipation. (skiers is underlined) A. direct object B. indirect object C. object complement D. predicate adjective I
68. ## Social Studies

What is a sentence that explains how the terms tributary and drainage basin are related
69. ## Social Studies

What is the Indian Ocean Basin? Is it just a trade route name like the silk roads? Thank you
70. ## physics

bill and bob are both on the roof of a building 176.4 m high. bill drops a penny straight down at the same instant, bob throws a dime vertically upwards. the dime is thrown over the age when it comes back down it misses the roof and follows the penny to
71. ## physics

bill and bob are both on the roof of a building 176.4 m high. bill drops a penny straight down at the same instant, bob throws a dime vertically upwards. the dime is thrown over the age when it comes back down it misses the roof and follows the penny to

1) A penny is dropped from rest from the top of a very tall building. Assuming the height of the building is 407 m and ignoring air resistance, find the speed with which the penny strikes the ground. I am not sure how to start this. Thank you!
73. ## US HISTORY

who discovered the mississippi river? Although the Mississippi river was discovered in its lower course by Hernando de Soto in 1541, and possibly by Alonso Alvarez de Pineda in 1519, Europeans were not yet prepared to use the discovery, and two Frenchmen,
74. ## social studies

write a sentence that explains how the terms tributary and drainage basin are realated
75. ## Spanish

Which of the following countries is not part of Caribbean basin? ~Mexico ~Ecuador ~República Dominicna ~Cuba
76. ## phy

Boy throws a penny into a wishing well at a velocity of 2 m/s and at an angle of 45 degrees below horizontal. If the penny takes 1.3 seconds to hit the water, how deep is the well?
77. ## AP Physics B

A penny of mass 3.1g rests on a small 28.2g block supported by a spinning disk of radius 12cm. The coefficients of friction between the block and disk are .73 (static) and .64 (kinetic) while those for the penny and black are .6 (static) and .45 (kinetic).
78. ## physics

A man leaves his front door, walks 440 m east and 380 m north, stopping at the edge of a cliff. He then takes a penny from his pocket and drops it from the cliff, which is 20 m high. What is the magnitude of the displacement (in meters) of the penny?
79. ## social studies

write a couple of sentences that explain how the terms tributary and drainage basin are related
80. ## Geography -Yr10

Q: List the impacts of reduced river flows that were identified within the Murray-Darling Basin in the 1980s. . Thanks

There were approximately 28 million adults on Canada when a survey was conducted. In an online survey, 1008 Canadians took part. 68% said that the penny should be abolished. If the margin of error was +- 3.1%, give an upper and lower estimate for the
82. ## Spanish

Countries of the Caribbean Basin generally share the same ______. A) traditions B) geography C) climate*** D) culture Please check my answer, thanks.
83. ## Physical Geography, Earth Science

How do you label a Tectonic Map of Hypothetical Ocean Basin? I have to draw in the plate boundaries.

There were approximately 28 million adults on Canada when a survey was conducted. In an online survey, 1008 Canadians took part. 68% said that the penny should be abolished. If the margin of error was +- 3.1%, give an upper and lower estimate for the
85. ## math

Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny, C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10 dollar, 1 1/20 dollars, and 1 1/2 dollars.
86. ## math

Give each letter of the alphabet a money value: A= 1 penny, B= 2 penny, C= 3 penny,and so on.Find words worth 1/5 dollar, 9/10 dollar, 1 1/20 dollars, and 1 1/2 dollars.
87. ## Geography

This is my last question that I'm struggling with. We had to do 25 of them and this one I can't figure. Thank you for your help. It's greatly appreciated. Have a great weekend!!! More water flows through the Amazon Basin than through any other river
88. ## social studies

The main landforms of Mexico are the Sierra Madres and the (a) central plateau. (b) isthmus of Panama. (c) Amazon Basin. (d) Andes.
89. ## socials

what products were grown in the poorest region of France? Give some reasons why farmers in these regions were poor. I wrote: Products which were grown in the poorest regions of France were corn, wine, and rye. Farmers in these regions were poor because
90. ## Math

In a certain coastal basin, the sea water contains 3.5 grams of salt per 1000 milliliters of water. How many grams of salt would be in 2 liters of the sea water.
91. ## Grammar ( Need help Ms. Sue )

Directions: Read each passage and ask yourself, ''What is the author doing in this paragraph?'' Write each anser in the summary box and then think of an appropriate title for the passage based on the main idea of the passage. 1 A penny for your thoughts?
92. ## Chemisry

If you put copper coated penny 1983or newer, in vinegar, it turns blackish green. If you rub the copper off half the penny first and expose the zinc, put the penny in vinegar, will the results change? Thank you.
93. ## geography

would a laccolith cause a dome shaped or basin-shaped topography? Explain your answer.
94. ## social studies

im doing a project on indians i can't find any information on the great basin ,my project is due tomorrow,can you help me please?
95. ## Lisa

A man leaves his front door, walks 330 m east and 320 m north, stopping at the edge of a cliff. He then takes a penny from his pocket and drops it from the cliff, which is 10 m high. What is the magnitude of the displacement (in meters) of the penny? I'm
96. ## science

i was wondering if any one could help me, for the science fair my teacher gave me a project that i am having some trouble with. It is to make a clock powered by water, i have the materials but don't acually know how i should put it thogether, the materials
97. ## English

What can we do to save water? 1. We can turn off the water when we are not using it. 2. We can turn off the water when we are brushing teeth. 3. We can use only a little water when we wash face. 4. We can use a little water when we wash hair. 5. We can
98. ## chemistry

15. On October 21, 1982, the Bureau if the Mint changed the composition of pennies. Instead of an alloy of 95% Cu and 5% Zn by mass, a core of 99.2 Zn and 0.8% Cu with a thin shell of copper was adopted. The overall composition of the new penny was 97.6%
99. ## Math

Suppose there are 500 pennies in a row... (math problem)? The pennies are all "heads up" Now suppose that 500 people line up and ... Person #1 turns over all the pennies Person #2 turns over every 2nd penny, starting with penny number 2 Person #3 turns
100. ## HELP!!! Math

You visit the Grand Canyon and drop a penny off the edge of a cliff. The distance the penny will fall is 16 feet the first second, 48 feet the next second, 80 feet the third second, and so on in an arithmetic sequence. What is the total distance the object