A man is on the shore of a circular lake with a radius of 3km at point P and wants to cross the lake directly through the middle to reach point Q. he can canoe across the lake at a

22,065 results
  1. Calculus

    A lighthouse stands 450 m off a straight shore and the focused beam of its light revolves four times each minute. As shown in the​ figure, P is the point on shore closest to the lighthouse and Q is a point on the shore 250 m from P. What is the speed of

  2. physics

    One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.03 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the

  3. physic

    A man walk 3km East and then 4km North what is his resultant displacement? Suppose he walk 3km and 4km 60(degree) North of East. What is the displacement?

  4. math

    A woman at a point A on the shore of a circular lake with radius 2 mi wants to arrive at the point C diametrically opposite A on the other side of the lake. She can bicycle at the rate of 6 mi/h and row a boat at 3 mi/h. What is the shortest amount of time

  5. physics

    To get off a frozen frictionless lake, a 70.0 kg person takes off a 0.150 kg shoe and throws it horizontally directly away from the shore with a speed of 2.00 m/s. If the perrson is 5.00 m from the shore, how long does it take for her to reach it?

  6. PhysicsIn what direction relative to north must ca

    Two canoeists start paddling at the same time and head toward a small island in a lake, as shown in the figure . Canoeist 1 paddles with a speed of 1.60 at an angle of 45 north of east. Canoeist 2 starts on the opposite shore of the lake, a distance of 1.5

  7. Math

    Homing pigeons avoid flying over large bodies of water, preferring to fly around them instead. Assume that a pigeon released from a boat 1 mile from the shore of a lake flies first to point P on the shore and then along the straight edge of the lake to

  8. calculus

    oil is leaking from a pipeline on the surface of a lake and forms an oil slick whose volume increases at a constant rate of 2000 cubic centimeters per minute. The oil slick takes the form of a right circular cylinder with both its radius r and height

  9. Calculus 1

    A woman at a point A on the shore of a circular lake with radius r=4 wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can walk at the rate of 10mph and row a boat at 5mph. What is the

  10. Calculus

    the shoreline of circle lake is a circle with diameter 2 mi.nancy's training routine begins at point e on the eastern shore of the lake.she jogs along the north shore to a point p and then swims the straight line distance,if any point ,from point to point

  11. Writing skills

    Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake.

  12. physics

    A 750.0 N man, carrying a 1.9 kg physics textbook, stands at the center of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome his difficulty, he throws his textbook

  13. math

    Homing pigeons avoid flying over large bodies of​ water, preferring to fly around them instead. Assume that a pigeon released from a boat 6 6 miles miles from the shore of a lake​ (point B in the​ figure) flies first to point P on the shore and then

  14. math

    Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet? please explain to me

  15. Calculus Minima Problems

    A small island is 2 km off shore in a large lake .A woman on the island can row her boat 10 km/hr and can run at a speed of 20 km/hr. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. Where should she

  16. Calculus

    A woman at point A on the shore of a circular lake with radius 2.5mi wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can walk at a rate of 3.25 mi/hr and row at a rate of 2 mi/hr.

  17. physics

    To get off a frozen frictionless lake, a 70.0kg person takes off a 0.150-kg shoe and throws it horizontally directly away from the shore with a speed of 2.00m/s. If the person is 5.0 m from the shore, how long does it take for him to reach it?

  18. Maths

    A circular garden of radius 25m has a concentric circular fountain of radius 3m.find the area of the garden available for the children to playin.

  19. Physical Science

    Why would a biologist want to know the pH of a lake? What would be the expected pH value for a normal, healthy lake? What could be a possible outcome if the lake pH was too high or too low? What could cause a large change in a lake’s pH? Please help! I

  20. physics

    A 750.0 N man, carrying a 1.9 kg physics textbook, stands at the center of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome his difficulty, he throws his textbook

  21. Algebra

    Belle is swimming in the lake and is 230 feet from shore. She starts to head back to shore at arate of 2ft/s. Ten seconds later, Max hops in a row boat and rows towards Belle at a rate of 5 ft/s. How many seconds will Bell have been swimming when Max

  22. Trig

    a sailor out in a lake sees two likght houses 11km apart along the shore and gets bearings of 285degrees from his present position for light house A and 237degrees for light house B. From light house B, light house A has a bearing of 45degrees. How far to

  23. Math 8th grade

    A lifeguard station is 6 meters higher than the shore of a lake. The bottom of the lake is 12 meters below the lake’s shore. On a number line, let 0 represent the elevation of the lake’s shore, with higher elevations on the positive side of 0. Which

  24. Calculus

    Engr. Ramos is walking at the rate of 5m/sec along the diameter of of a circular courtyard. A light at one end of a diameter perpendicular to his path casts a shadow on the circular wall. How fast the shadow from the man to the center of the courtyard is

  25. Calculus

    A man is on the shore of a circular lake with a radius of 3km at point P and wants to cross the lake directly through the middle to reach point Q. he can canoe across the lake at a speed of 4km/h or he can wak along the shore of the lake at a speef of

  26. physics

    A 705 N man stands in the middle of a frozen pond of radius 4.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward the

  27. Physics..help please

    A 715 N man stands in the middle of a frozen pond of radius 10.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward

  28. Chemstry

    Mercury concentration in a polluted lake is 0.0125 micrograms/L. What is the total mass in kilograms of mercury in the lake if the lake is approximately circular witha diameter of 10 miles and an average depth of 50 ft.?

  29. physics

    One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.47 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the

  30. Physics

    A man walks 3km E and then 4km N. What is his resultant displacement?

  31. physics

    A 740 N student stands in the middle of a frozen pond having a radius of 4.8 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.8 kg physics textbook

  32. math

    While on vacation, Kevin went for a swim in a nearby lake. Swimming against the current, it took him 8 minutes to swim 200 meters. Swimming back to shore with the current took half as long. Find Kevin's average swimming speed and the speed of the lake's

  33. physics

    Bob heads out into a lake at an angle of 27◦ with respect to the shore. If his boat is capable of a speed of 1.3 m/s, how far from land will he be in 2 min and 28 s ? Answer in units of m.

  34. PreCalculus

    Problem 1.) Three friends want to share a circular 16-inch pizza equally by exactly only two parallel cuts. How far from the center must the cuts be? Hint: The pizza is a circle of radius 8 inches. Problem 2.) You are at the southernmost point of a

  35. Laws of Motion

    Two skaters are in the exact center of a circular frozen pond. Skater 1 pushes skater 2 off with a force of 100 N for 1.4 seconds. If skater 1 has a mass of 30 kg and skater 2 has a mass of 74 kg, a) what is the relative velocity (v1 - v2) after the push

  36. Calculus

    A sherman is in a rowboat on a lake and 3 km from shore. He wishes to reach a store 2 km down the (straight) shore. He can row at 5 km/h and run at 13 km/h. To what point down-shore should he row to get to the store as quickly as possible? 8. The

  37. math

    When don is in the middle of the lake swimming towards the south shore, Dawn jumps in from the north shore and swims after him. When Don is 10 yards from the south shore,Dawn is 5 yards behind him and 60 yards from the north shore.The distance from the

  38. Physics

    One afternoon, a couple walks three-fourth of the way around a circular lake, the radius of which is 1.45km. They start at the south side of the lake and head due east at the beginning of their walk. (a) What is the distance they travel? (b) What are the

  39. physics

    Bob heads out into a lake at an angle of 41◦ with respect to the shore. If his boat is capable of a speed of 1.3 m/s, how far from land will he be in 4 min and 38 s ? Answer in units of m.

  40. Alegabra

    Russell Gossman is training for the Olympics. He wants to know the distance across Lake Royal, so he can write in his training logbook how far he rows each day. If from one point on the shore to one side of the lake is 13 km and from the same point to

  41. math

    Walking on the circumference of a circular field a man completes one round in 400 steps. If the length of a step of the man is 66cm., the radius of the field is -

  42. science

    A man walk 3km East and 4km North what is his resultant displacement? Suppose he walks 3km and 4km 60 degree North of East. What is the displacement?

  43. Science

    Which best explains why the shore of a lake heats up faster during the day than the lake's water? A.water gives its extra heat to the land. B.water reflects more of the sunlight. C.water let's most of the light go to the bottom. D.water gives much of the

  44. Quick Physics help

    1. What is the medium for waves on a rope? 2. What is the medium for earthquake waves? 3. A characteristic of waves is that after the wave has passed the medium is (disturbed, undisturbed) is this disturbed? 4. A cork is floating in the water 20 m from the

  45. Algebra 1

    A circular oil spill is spreading over the surface of a lake. The circle's radius grows by 500 meters every hour. How many square kilometers did the spill grow between 24 hours and 48 hours? Explain.

  46. math

    Surfact of A lake is 31 feet above the surface of B lake. B lake is half as deep as A Lake and the bottum of the B lake is 8 feet below the bottom of A Lake. how deep is each lake?

  47. geography

    Will you please check my answers? 1. The largest lake in the world is located near the border of Asia and Europe. What is its name? Caspian Sea 2. What is the name of the country that shares the Iberian Peninsula with Spain? Portugal 3. Name the Great

  48. physics

    two canoeists start paddling at the same time and head toward a small island in a lake. caneist 1 paddles with a speed of 1.35 m/s at an angle of 45 degrees north of east. canoeist 2 starts on the opposite shore of the lake,a distance of 1.5 km due east of

  49. physics

    Find the speed of a satellite in a circular orbit around the earth with a radius 2.69 times the mean radius of the earth; Radius Earth= 6.37E+3km; Mass Earth= 5.98E+24kg.

  50. physics

    A 755 N man stands in the middle of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward the

  51. Calculus

    A small island is 2 km off shore in a large lake. A woman on the island can row her boat 10 km/h and can run at a speed of 20 km/h. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. How far from the

  52. Phyics

    One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 2.16 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the

  53. Classical Mechanics

    Approximate Lake superior by a circle of radius 162 km at a latitude of 47 degrees .Assume the water is at rest with respect to earth and find the depth that the center is depressed with respect to the shore due to the centrifugal force.

  54. ap physics

    hi i am not sure how to do this...thank you a man is going to pitch a ball. he moves the ball in a circular path of radius 0.6 m, constantly applying a force of 30N to the ball in the same direction as the ball's velocity along the circular path. at the

  55. math

    Jim paddles from one shore of a lake three miles wide at 4 mph, and John paddles from the opposite shore at 5 mph. How long will they travel before they meet? (A). 20 minutes B. 3 hours C. 27 minutes D. 1 hour, 24 minutes How many feet are there in 24

  56. honors geometry

    You and a group of friends are participating in a ropes course. One of the obstacles involves doing a Tarzan Swing into a lake. A rope swing is at the edge of the lake. It is attached to a platform arm that overhangs the lake as shown in the diagram below.

  57. Calculus Optimization

    An electric utility is required to run a cable from a transformer station on the shore of a lake to an island. The island is 6 km from the shore and the station is 12 km down the shoreline from a point opposite the island. It costs $4000/km to run the

  58. english

    Put an accent mark above the strong beats in the first four lines of the poem : Back and Forth. Back and forth go the ferries, back and forth from shore to shore, hauling people, trucks and autos, back and forth from shore to shore.

  59. physics

    A sailboat is sailing north on a lake parallel to the shore with a speed of 12 kilometers per hour (km/hr). If a man walking south along the shore has a speed of 4 km/hr, what is the northerly speed of the sailboat relative to the man?

  60. Chemistry

    A geologist removes a sample of water from a lake in Nevada where the water level has been slowly dropping over time. The sample is found to be 0.02M in borax. The lake is circular in shape and is currently 500 meters in diameter and 50 meters deep. Using

  61. math

    A swimmer S is in the sea at a distance of 4km from the closest point A on a straight shore.His house B is on the shore at a distance 5km from A.He can swim at a speed of 3km/hr.The distance of the point on the shore from B so that he reaches his home in

  62. physics

    One afternoon, a couple walks five-eighths of the way around a circular lake, the radius of which is 1.45 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel?

  63. physics

    A 770 N man stands in the middle of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.2 kg physics textbook horizontally toward the

  64. physics

    A(n) 775 N man stands in the middle of a frozen pond of radius 11.2 m. He is un- able to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.3 kg physics textbook horizontally

  65. Physics B

    A(n) 685 N man stands in the middle of a frozen pond of radius 14.6 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.3 kg physics textbook horizontally toward

  66. Physics B

    A(n) 685 N man stands in the middle of a frozen pond of radius 14.6 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.3 kg physics textbook horizontally toward

  67. Calculus

    A small island is 2 km off shore in a large lake .A woman on the island can row her boat 10 km/hr and can run at a speed of 20 km/hr. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. Where should she

  68. Physics

    One afternoon, a couple walks five-sixths of the way around a circular lake, the radius of which is 1.45 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What are the magnitude and

  69. math

    jim paddle from one shore of a lake three miles wide at 4 mph, and john paddles from the opposite shore at 5 mph. how long will they travel before they meet?

  70. Area of circle

    PAC-MAN is a circle of radius 24 with a sector of angle π/3 removed. PAC-MAN eats circular pellets of radius 2. If PAC-MAN wants to eat pellets that have that same total area that he does, how many pellets must he eat?

  71. physics

    One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 2.12 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the

  72. calculus

    you stand on the shore of a circular lake and you wish to reach the exact opposite your current position. you can swim 20 feet per minute and run 50 feet per minute. what path should you take to reach your destination as quickly as possible?

  73. Pre-Algebra (Pythagorean Theorem)

    Russell Gossman is training for the Olympics. He wants to know the distance across Lake Royal so he can write how far he went in his training logbook each day. If from one point on the shore to one side in 13 km and from the same point to another side of

  74. math

    A circular lake is 30 miles across at its widest point. What is the area of the lake in acres? Round your answer to the nearest tenth of an acre.

  75. math

    Two simmers are swimming in a lake. Swimmer A starts swimming at a speed of 1m/sec towards the shore from a distance of 30 m. Swimmer B starts swimming towards the shore from 10m behind swimmer A but he swims at 1.5m/sec. Which swimmer will arrive at the

  76. Math

    A man in rowboat 12km from the nearest point A. On a straight shore wishes to reach point B 16km from A along shore.where should he land if he can row 4km/hr and walks 8km/hr.

  77. calculus

    A man in a rowboat at p, see fig 2c, 5km from the nearest point A on the straight shore. He wished to reach a point B, 6km from A along the shore, in a shortest time. Where should he land if he can row 2km/h and walks 4km/h? P 5 km A C B

  78. English

    Which Anology would go best with this one? Pond:lake:: A. man:child B. water:sream C. lake:sea D. dusk:night

  79. math

    How long will a man take to go one round a circular track of radius 4.2m.if he runs at an speed of 6km\h.

  80. Physics

    A 100kg man stands initially on the left end of a 60 kg, flat-bottomed fishing boat that is 10 meters long. This end of the fishing boat is 60 meters from shore. No external forces act on the boat, such as air or water friction. If the man walks to the

  81. Math

    14. There is a rectangular piece of property that measures 188 ft by 100 ft. On the property there is a circular lake with a diameter of 72 ft. In the center of the lake there is a circular island with radius of 12 ft. The rest of the property is land.

  82. Math

    14. There is a rectangular piece of property that measures 188 ft by 100 ft. On the property there is a circular lake with a diameter of 72 ft. In the center of the lake there is a circular island with radius of 12 ft. The rest of the property is land.

  83. math finals

    14. There is a rectangular piece of property that measures 188 ft by 100 ft. On the property there is a circular lake with a diameter of 72 ft. In the center of the lake there is a circular island with radius of 12 ft. The rest of the property is land.

  84. social studies

    what are the five great lakes You can find that at the site below: http://worldatlas.com/webimage/countrys/namerica/greatlk.htm they are lake superior lake michagan lake huron lake eria lake ontario

  85. Social Studies

    Lake Michigan and Lake Huron have the same surface elevation of ___ feet 577? The ___ Channel connects Lake Huron Lake St Clair and Lake Erie South? Niagara Falls is between Lake Erie and Lake __ Ontario? Lake Ontario is connected to the St Lawrence Seaway

  86. physics

    A man in a boat moving at constant speed of 60km/h relative to the shore throws an object in the forward direction with a speed of 30km/h. What is the speed of the object as measured by an observer at rest at the shore?

  87. physics

    A man in a boat moving at constant speed of 60km/h relative to the shore throws an object in the forward direction with a speed of 30km/h. What is the speed of the object as measured by an observer at rest at the shore?

  88. physics

    A 748 N student stands in the middle of a frozen pond having a radius of 5.3 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.1 kg physics textbook

  89. Physics

    A 750 N student stands in the middle of a frozen pond having a radius of 5.4 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.0 kg physics textbook

  90. MATH

    A circular oil spill is spreading over the surface of a lake. The circle’s radius grows by 500 meters every hour. How many square kilometers did the spill grow between 24 hours and 48 hours?

  91. Physics (Buoyancy)

    A Cuboid with lenght as 6m and breadth as 3m, is floating in a lake. A man comes and sits on it and it sinks 1cm, then find the weight of the man. (Take g=10 m/s -2)

  92. math

    A man who can swim at 5km/h in still water swims towards the east to cross arriver. If the river flows from north to south at the rate of 3km/h a) Calculate: i) The resultant speed ii) The drift b) If the width of the river is 30m, find the time taken, in

  93. Writing skills

    Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake.

  94. Calculus: Optimization

    A person on a lake in a canoe 1 mile from the nearest point "P" on a straight shore line; the person wishes to get to a point "Q" , 10 miles along the shore from "P". To do so, the canoe moves to a point "R" between P and Q and then walks the remaining

  95. physics

    Find the density of the earth if its mass is 6×10^3kg and radius is 6.4×10^3km

  96. Physical Science

    Why would a biologist want to know the pH of a lake? What would be the expected pH value for a normal, healthy lake? What could be a possible outcome if the lake pH was too high or too low? What could cause a large change in a lake’s pH? Please help, I

  97. Physics

    800 n student is standing in middle of frozen pond stranded 6.4 m from shore only thing he has is physics book which has mass of 3 kg so he throws it at 10 m/s toward one shore how long does it take him to reach opposite shore

  98. Calculus

    . A rock drops into a still lake, creating a circular ripple that expands so that the radius grows at a rate of 1.5 feet per second. At the moment when the area is 16π square feet, find the rate of change of the following: a) the area and b) the

  99. writing skills

    Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake. What correction should be make to this sentence?

  100. physics

    Bob heads out into a lake at an angle of 34 with respect to the shore. If his boat is capable of a speed of 2.5 m/s, how far from land will he be in 7 min and 31 s ? Answer in units of m

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