# How to figure out the temperature of a lake using x for the feet or the Depth and for the degrees Celsius use (3900x+1000)/(3x^2+100) with the answer of the degrees celsius being 8.44 looking like 8.44=(3900x+1000)/(3x^2+100) i need the depth

34,877 questions, page 79
1. ## Math

6.Sherman read 154 pages of a book in 4 days. He read 32 pages on each day of the first 2 days and y pages on the third.Which equation can be used to find p, the number of pages Sherman read on the fourth day? A.p=154-32(2xy) B.p=154-(32x2)-y

asked by Jerald on April 18, 2013
2. ## College Algebra

A person who is 6 feet tall walks away from a 50-foot tower toward the tip of the tower's shadow. At a distance of 32 feet from the tower, the person's shadow begins to emerge beyond the tower's shadow. How much farter must the person walk to be completely

asked by Monica on February 3, 2015
3. ## another math

At a distance of 34 feet from the base of a flag pole, the angle of elevation to the top of a flag is 48.6°. The flag itself is 5.1 feet tall. The angle of elevation to the bottom of the flag is 44.6°. The pole extends 1 foot above the flag. Find the

asked by Anonymous on January 9, 2014
4. ## Algebra II

A person who is 6 feet tall walks away from a 50-foot silo toward the tip of the silo's shadow. At a distance of 32 feet from the silo, the person's shadow begins to emerge beyond the silo's shadow.How much farther must the person walk to be completely out

asked by Brittany on November 23, 2007
5. ## MATH

E LARGEST PYRAMID IN THE U.S. IS THE LUXUR HOTEL IN VEGAS. THE VOLUME OF THIS HOTEL IS 28,933,800 OR ABOUT 29 MILLION CUBIC FEET. THE HEIGHT OF THE PYRAMID IS 148 FEET LESS THAN THE LENGTH OF THE BUILDING. THE BASE OF THE BUILDING IS SQUARE. FIND THE

asked by HOPE on March 10, 2008
6. ## Math Calc

John was wondering at what speed an arrow leaves a bow when it is released. So he went to a field and shot the bow at an angle of 45 degrees. The arrow hit the ground at a distance of 600 feet. Ignore air resistance. For simplicity, assume that the arrow

asked by Anonymous on February 14, 2017
7. ## geometry heptagon

how many segments does a 7 sides figure have joining the midpoints of the sides? so the heptagon 7 sided figure has 7 segments joining the midpoint of sides' is that right?

asked by marko on April 2, 2012
8. ## chemistry

Is this statement accurate? the boiling point of the distilled water was 99°C. After five minutes, the temperature still stayed the same; it remained constant. The liquid was becoming a gas. Phase change means there is an energy change. When the

asked by Jennie on April 26, 2010
9. ## physics

A 1.41-kg aluminum pot contains 2.25 L of water. Both pot and water are initially at 17.5°C. How much heat must flow into the pot and the water to bring their temperature up to 92.7°C? Assume that the effect of water evaporation during the heating

asked by maria on December 9, 2011
10. ## math

if a flag is 4 feet by 6 feet, has 13 horizontal stripes(6 white and 7 green) and has a green square in the upper left hand corner measuring 25 inches by 30 inches how many square inches are the white stripes of the flag? Express your answeras a decimal to

asked by aunika on June 26, 2012
11. ## math

The formula for the lateral surface area of a cone is A=πr√(h^2+r^2). (A)Solve for r and simplify the result, if possible. (B) If the lateral surface area of a cone is 10 square feet and the height is 16 inches, what is the radius of the cone in inches?

asked by Andrea on April 24, 2018
12. ## math

The highest point on a trail, a pass with elevation of 1116 m, can be attained by climbing a 3.20 mile route from a waterfall, elevation of 60 m. The elevation gain from the waterfall to the pass is ___ feet. Do I just subtract 1116 - 60 = 1056 m and

asked by Alisha on January 20, 2013
13. ## Trigonometry with right triangles

A painter is placing a ladder to reach the third story window, which is 18 feet above the ground and makes an angle with the ground of 80°. How far out from the building does the base of the ladder need to be positioned? Round your answer to the nearest

asked by Sosa on January 25, 2017
14. ## Algebra 2 HELP plz

An object is launched upward with an initial velocity of 64 feet per second from a platform 80 feet high. 1.) Write a height model for the object. I wrote my model as .... h=-16t^2 +64t +80 2.) How many seconds until the maximum height is reached? I had 2

asked by kylie on November 12, 2014
15. ## Applied math

The temperature on Monday was -2 degrees Fahrenheit by noon it had warmed up to 5 degrees Fahrenheit how many degrees did the temperature change

asked by Trenicia on October 31, 2016
16. ## Chemistry

Decomposition reaction: CH2=CH2(g)---> CH4(g) + C (Graphite) If the decomposition begins at 10c and 40.0 atm with a gas density of .215 g/ml and the temp increases by 950K. (a) what is the final temperature of the confined gas (ignore volume of graphite

asked by Tor on October 26, 2011
17. ## Physics

A 4.0 x 101 kg wind sled is gliding East across a frozen lake at a constant speed of 12 m/s, when a gust of wind from the southwest exerts a constant force of 1.0 x 102 N on its sails for 3.0 s. With what velocity will the sled be moving after the wind has

asked by bob on July 15, 2012
18. ## Science

A 4.0 x 101 kg wind sled is gliding East across a frozen lake at a constant speed of 12 m/s, when a gust of wind from the southwest exerts a constant force of 1.0 x 102 N on its sails for 3.0 s. With what velocity will the sled be moving after the wind has

asked by Jack Hill on July 15, 2012
19. ## Physics

It’s a beautiful winter day, and you and your friend are throwing around a 5 kg medicine ball on a very slippery frozen lake. You throw the ball toward your friend, and notice that you subsequently slide backwards with a speed of 1 m/s. If your mass is

asked by Aaron on February 13, 2012

The depth d of water in a tank oscillates sinusoidally once every 4 hours. If the smallest depth is 7.9 feet and the largest depth is 10.1 feet, find a possible formula for the depth in terms of time t in hours. (Let the water depth be at the average when

asked by Natalie on September 3, 2015
21. ## Math

Cape Fear Riverwood is lumber company that specializes in recovering, cutting, and selling wood from trees discarded long ago,even those that have been underwater or buried in the ground for more than 100 year ! Historically, the logging industry used

asked by KGK on June 25, 2014
22. ## Earth and Space Science

Hi everyone! I am having the darndest time figuring out the answer to a test question and am wondering if anyone can shed some light and help me out. Here is the question: The temperature (the average kinetic energy of the molecules) of a star is evidenced

asked by Missthang on August 18, 2007
23. ## Organic Chemistry

Which statements are FALSE about selecting a solvent for recrystallization? (Select all correct answers.) Any solvent can be used for recrystallization as long as the compound dissolves in it. The compound should exhibit a high solubility in the solvent at

asked by Maria on April 29, 2010
24. ## Physics

A class of 11 students taking an exam has a power output per student of 124 W. Assume that the initial temperature of the room is 18.7°C and that its dimensions are 6.00 m by 14.5 m by 3.40 m. What is the temperature (in °C, do not enter units) of the

asked by Kelsey on February 9, 2011
25. ## Material science

Gaseous hydrogen at a constant pressure of 0.658 MPa is to flow within the inside of a thin-walled cylindrical tube of nickel that has a radius of 0.125 m. The temperature of the tube is to be 350°C and the pressure of hydrogen outside of the tube will be

asked by jan michael vincent on March 29, 2018
26. ## Algebra 1A

Home Size The average size F in square feet of new U.S. homes built during year x is estimated by the formula F = 34x - 65,734, where x is any year from 2002 to 2008. In which year was the average home size 2504 square feet?

asked by Nini on May 17, 2012
27. ## Math

A 12-ft. board is cut into 2 pieces so that one piece is 4 feet longer than 3 times the shorter piece. If the shorter piece is x feet long, find the lengths of both pieces 12ft-x=3x+4 12ft- x-3x=4ft 12ft-4x =4ft -4x=-8ft x=2ft

asked by Denise on April 21, 2016
28. ## math

A hot air balloon was at a height of 60 feet above the ground when it began to ascend. The balloon climbed at a rate of 15 feet per minute. a) make a table that shows the height of the air balloon after climbing for 1,2,3,&4 minutes. minutes:1 2 3 4

asked by B8 on December 16, 2013
29. ## mechanics

A diver’s take - off velocity is 5 m/s at an angle of 15º to the horizontal during a dive. His centre of gravity is 0.4 m above the pool deck level at take - off (point A, Figure Q1(a)) and is 0 m above deck level when he enters the water (point D,

asked by Ahmed on August 1, 2014
30. ## Geometry

when you have a graph with just dots and the dots make a figure. Then the dots on the outside are the posts and the inside dots are trees. what equation can i use to get the area of the figure using only posts and trees?

asked by Cheyenne on October 18, 2010
31. ## Pre Algebra

Which hill described in the table is the steepest and why? Street. Horizontal distance vertical (ft). Rise of Street (ft) Dixie hill. 100. 60 Bell hill. 100. 50 Liberty hill 100. 20 A. Dixie hill; it rises 5 feet for every 3 feet of horizontal travel. B.

asked by Anonymous JAK on May 9, 2016
32. ## math

a flagpole is 25 feet tall. a truck runs into the pole and bends it at the very bottom of the pole but the rest of the pole remains straight. after the accident we measure the angle of elevation to the top of the pole from a point 30 feet from the base of

asked by darian on December 5, 2012

1. Jim is doing a physics experiment on the rate of cooling of solid objects in air. Which of the following is a variable that is not directly part of his experiment, but should be controlled in his experiment? (Points : 1) initial temperature to which he

asked by Greg on January 8, 2014
34. ## ALGEBRA

If the global climate were to warm significantly as a result of the greenhouse effect or other climatic change, the Arctic ice cap would start to melt. This ice cap contains the equivalent of some 680,000 cubic miles of water. More than 200 million people

asked by TANGIE on March 3, 2011
35. ## Calculus

Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 16 feet

asked by Robin on July 5, 2013
36. ## Calculus (Math 2A)

Gravel is being dumped from a conveyor belt at a rate of 20 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 19

asked by What is wrong with it? on February 19, 2012
37. ## Finance

Hello, I am doing a finance case, Twilight Acre Farms, and I am trying to determine cash flows. I was not given a revenue figure, only that productivity will increase 15% with the new machine. I do not know what to do. It says in the case that excess

asked by Brittany on September 1, 2010
38. ## physics

In Figure (1), a 3.50 g bullet is fired horizontally at two blocks at rest on a frictionless table. The bullet passes through block 1 (mass 1.13 kg) and embeds itself in block 2 (mass 1.75 kg). The blocks end up with speeds v1 = 0.600 m/s and v2 = 1.32 m/s

asked by kristy on November 13, 2013
39. ## Chemistry

A 100.00 ml of volume of 0.500 M HCl was mixed with 100.00 ml of 0.500 M KOH in a constant pressure calorimeter. The initial temperature of individual acid and base was 23.0 oC. The final temperature after mixing was 25.5 oC. The specific heat of the

asked by Kelly on March 5, 2018
40. ## Physics

A certain lightbulb has a tungsten filament with a resistance of 28 Ω when cold and 144 Ω when hot. If the equation R = R0 [1 + α ∆T ] can be used over the large temperature range involved here, find the temperature of the fila- ment when it is hot.

asked by Aj on October 31, 2012
41. ## Chemistry

Two substances, gold and granite, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of gold is 20.2 g and its initial temperature is 58.2 ∘C. The mass of granite is 29.1 g and its initial temperature is 20.1

asked by Diana on October 14, 2016
42. ## Calc

A cup of coffee at 90 degrees celsius is put into a 30 degree celsius room when t =0 . The coffee's temperature, f (t ) , is changing at a rate given by f '(t )=-8(0 .8) t degrees celsius per minute, where t is in minutes. Estimate the coffee's temperature

asked by Natalie on July 21, 2014
43. ## Pre-Calculus

Suppose a daredevil attempted to jump a canyon, using a special rocket built for the stunt. Suppose it was launched off a ramp shown in the picture. The ramp was 325 feet in length and rose vertically 225 feet. (a) Calculate the measure of the angle of

asked by Abby on April 13, 2018
44. ## Biology

Please answer this question: EFFECT OF TEMPERATURE ON MEMBRANE PERMEABILITY (BEETROOT) EXPERMIENT -My graph shows: Higher temperature=higher absorption rate for each temperature (best fit line) Fluid mosaic model theory: -Membrane composed of phospholipid

asked by Jann on December 4, 2017
45. ## thermodynamic

An air tank with a volume of 20m^3 is pressurized to 10 MPa. The tank eventually reaches room temperature of 25 degree C. If the air inside is allowed to escape without any heat transfer to the environment unit reaches a pressure of 200 KLPa, find the

asked by chris on January 15, 2011
46. ## physics

A copper Calorimeter of mass 150g,was half-filled with water of mass 300g and a temperature of 0°C.5g of ice of mass 0°C was added to the content, later some quantity of steam was passed into the mixture and the temperature rose by 20°C. Calculate the

asked by tony on December 13, 2017
47. ## Chemistry

A volume of 100.mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.50 ∘C , what is the mass of the steel bar? Use the following values: specific

asked by Help on October 23, 2014
48. ## chem

N2H4 is decomposed in a closed container according to this reaction: N2H4 → N2 + 2H2 . If the temperature is constant and the initial pressure of N2H4 is 800mm, what will the pressure in millimeters be after the decomposition to N2 + 2H2? Im having

asked by tomas on May 1, 2017
49. ## Physics

I understand there is a relationship between pressure & temperature in a sealed rigid container. An open container is placed in a freezer at -15 degrees C then the door is opened and the cap replaced with the freezer at 1000mb what will the pressure be

asked by Mike on December 7, 2011
50. ## Physics

A compartment measures 3.5 meters by 5.5 meters and is 3 meters high. A fire raises the temperature from 68 degrees F to 1500 degrees F. If the starting pressure was 1 atmosphere, what volume is present at the elevated temperature assuming the compartment

asked by Deborah on October 29, 2011
51. ## physics

A copper Calorimeter of mass 150g,was half-filled with water of mass 300g and a temperature of 0°C.5g of ice of mass 0°C was added to the content, later some quantity of steam was passed into the mixture and the temperature rose by 20°C. Calculate the

asked by oluwasegun on August 17, 2015
52. ## chemistry urgent

NH4NO3(s)+H2O(l)→NH4NO3(aq) ΔH = +25.7 kJ. What is the final temperature in a squeezed cold pack that contains 45.5g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18J/(g⋅∘C) for the solution, an initial temperature of 29.0∘C,

asked by Tyler on April 20, 2014
53. ## Physics

A faulty celcius thermometer read 0.7 degree celcius at the melting point of pure ice and 99.5 at the boiling point of water at normal pressure. Calculate the correct temperature when it reads 30 degree celcius. At what temperature will its reading be

asked by Shredder on January 25, 2016
54. ## MATH

The table below represents the volume of a liquid sample as a function of its temperature: Temp (C) Volume (ml) x f(x) 11 95 16 100 21 105 26 110 The average rate of change of f(x) between x=11 to x=21 is _____ ml per C ((degrees)) and represents the rate

55. ## Calculus

Water reaches its maximum density above its freezing point. The volume V (in cubic diameters) of 1 kg of water at temperature T between 0 degrees C and 30 degrees C can be approximated by the formula V=999.87 - 0.06426T + 0.0085043T^2 - 0.0000679T^3. Find

asked by Candy on March 10, 2012
56. ## chemistry

A sample of gas is at a pressure of 1 atm , a volume of 1 L , and a temperature of 25 degrees celsius. What would happen to the pressure if the volume were reduced to 0.5 L and the temperature increased to 250 degrees celsius?

asked by Anonymous on November 8, 2010
57. ## chem

A sample of ideal gas is in a sealed container. The pressure of the gas is 615torr , and the temperature is 10 ∘ C . If the temperature changes to 56 ∘ C with no change in volume or amount of gas, what is the new pressure, P 2 , of the gas inside the

asked by dakota on March 18, 2015
58. ## Chemistry

A balloon filled with helium has a volume of 30.0 L at a pressure of 100 kPa and a temperature of 15.0 Celsius. What will the volume of the balloon be if the temperature increased to 80.0 Celsius and the pressure remains constant?

asked by Lisa on May 6, 2012
59. ## Chemistry

A sample of gas with a volume of 14.9 liters at 2.6 atmospheres pressure and a temperature of 25°C is allowed to expand to a volume of 29.3 liters at a temperature of 15°C. What is the final pressure (atm)atof the gas?

asked by Linzy on March 25, 2013
60. ## Biology

The body at higher temperature but having low amount of heat gives more severe pain of hotness than a body at low temperature but having high amount of heat. Give some examples.

asked by Abc on May 18, 2017
61. ## chemistry

A balloon filled with helium has a volume of 30.0 L at a pressure of 100 kPa and a temperature of 15 degrees C. What will the volume of the balloon be if the temperature is increased to 80 degrees C and the pressure remains constant?

asked by Dan on August 4, 2008
62. ## Chemistry

The equilibrium constant is 16 for the gas phase reaction SO2 + NO2 SO3 + NO at a certain temperature. If 3.0 moles each of SO2 and NO2 are placed together in an empty 1.0 liter flask and the system is allowed to come to equilibrium at this temperature,

asked by Amanda on April 20, 2014
63. ## Science- CLIMATE!

Consider the following atmospheric conditions: the surface air temperature is 18 degrees C, and the air temperature at 1000m is 10 Degrees C. If a parcel of dry air is lifted from the surface to a height of 1000 m, will it continue upward or be pushed back

asked by Shenna on February 7, 2010
64. ## Newtons Law of Cooling

using Newton's Law of Cooling: At 10:30 am the medical examiner arrives at a crime scene where a dead body has been found. The temperature of the body is 80 degrees F and the thermostat for the room in which the body was found is set at 68 degrees F. One

asked by Tracy on September 4, 2014
65. ## math help

from noise to tail your first dog is 5 feet long.your first dog is 4/5 the length of your second dog.how many feet long f is your second dog A.4/25 ft B.6 1/4 ft C.4 ft D.1/4 ft

asked by mathelp124576 on January 7, 2014
66. ## Math

Jamal has 4 feet of ribbon to wrap presents. If he uses 2/3 feet of ribbon for each present how many presents can he wrap?

asked by Anonymous on December 5, 2012
67. ## math

Berkley has 10 pieces of ribbon that are 2 yards each. She uses 8 pieces that are 3 feet long. How many feet of ribbon does Berkley have?

asked by ski on March 18, 2015
68. ## Algebra 2

The perimeter of a rectangle is 82 feet. Find the length and width of the rectangle if the length is 7 feet more than width.

asked by Meg on September 1, 2016
69. ## Chemistry

A dry mixture of kno3 and sand could be separated by 1. adding water to the mixture and filtering 2. adding water to the mixture and evaporating 3. heating the mixture to a high temperature 4. cooling the mixture to a low temperature

asked by . on April 13, 2009
70. ## geometry

1)A scale model of a yacht is 15 inches long. The actual length of the yacht is 157.5 feet. How many times as long as the actual yacht is the model? *i think it is 15/157 2)An artist is making a scale model of a statue she has been commissioned to create.

asked by rory on July 31, 2018
71. ## geometry

Can you prove ABCD is a parallelogram based on the given information? Explain. Given: x = 5, y = 4 Prove: ABCD is a parallelogram. A. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent

asked by Kate on March 6, 2011
72. ## physics

The hot reservoir for a Carnot engine has a temperature of 926 K, while the cold reservoir has a temperature of 441 K. The heat input for this engine is 3730 J. The 441-K reservoir also serves as the hot reservoir for a second Carnot engine. This second

asked by angie on December 1, 2012
73. ## Math

Question 3 of 20 Sarah’s mother has a miniature village modeled after her home town. The model is 10 feet long and 7 feet wide. The actual village is 7 miles long. What is the village’s actual width? If necessary, round to the nearest tenth of a mile.

asked by Anonymous on October 31, 2018
74. ## math

Solve using unit rates. A person on a moving sidewalk travels 24 feet in 8 seconds. The moving sidewalk has a length of 60 feet. How long will it take to move from one end to the other. The person will take ___ seconds to move one end to the other. I'm not

asked by lei on February 27, 2017
75. ## algebra

A man standing on the deck of a ship is flying a kite. The ship deck is 30 feet above the water. The kite string is 75 feet long, and the kite flying at an angle of elevation of 60 degrees. How high above the water is the kite?

asked by Cody on May 2, 2018
76. ## Math

The size of houses and buildings are measured in square feet. If you measured the outside length and width of a house and found the length was 60ft. and the width was 30ft., what is the size of the house in square feet? 60x30 and I got 1800ft

asked by Connor on January 18, 2012
77. ## Intermediate algebra, concepts and graphs

A garden is in the shape of a square with perimeter of 32 feet. The garden is surrounded by two fences. One fence is around the perimeter of the garden, whereas the second fence is two feet from the first fence on the outside. If the material used to build

asked by Lisa on June 9, 2013
78. ## math

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 156 feet, and ball 2 is dropped from a height of 202 feet. Write a function for the height of each ball. h1(t)=159+t h2(t)=202+t

asked by pmh on July 12, 2014
79. ## chemistry

1)A sample of CO2 gas which weighs 0.85 grams has a volume of 1.30 liters when collected at 30°C. What would be the pressure of the gas sample? 2) A gas sample has an original volume of 600 ml when collected at 720 mm and 35°C. If a change is made in the

asked by Anonymous on April 22, 2014
80. ## Chemistry

Could some please tell me if I did this problem correctly? Assume that at a given temperature, there is 1 g of CO2 gas in a one liter volume. How much mass of O2 would there be at the same temperature, in the same volume? My answer: Step 1) Find the number

asked by Ed on October 22, 2009
81. ## Chemistry

1. Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degrees C. Given, the specific heat of copper is 0.382 cal/g x degrees C. 2. What will be the final temperature if 2000g of copper

asked by Shona on March 6, 2011
82. ## Engineering/Chemistry

Milk is flowing through a heat exchanger at a rate of 2000kg/h. he heat exchanger supplies 111,600kJ/h. The outlet temperature of the product is 95C. Determine the inlet temperature of the milk. The product specific heat is 3.9kJ/(kg*C)

asked by Janice on January 31, 2012
83. ## ap chemistry

At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.853 moles of O2 in a 1.00 liter container at this temperature? Note:

asked by cheri on January 28, 2013
84. ## ap chem

At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.578 moles of O2 in a 1.00 liter container at this temperature? Note:

asked by Anonymous on February 13, 2011
85. ## Chemistry

A sample of hydrogen gas at a pressure of 0.694 atm and a temperature of 271 °C, occupies a volume of 417 mL. If the gas is heated at constant pressure until its volume is 626 mL, the temperature of the gas sample in °C will be? I got 407 °C but it says

asked by Anonymous on November 19, 2017
86. ## Physics

A certain mass of water at the top of Niagara Falls has a temperature of +10.0 degrees Celsius. It falls a distance of 50m. Assuming that all its potential energy is converted into thermal energy, calculate the temperature of the mass of water at the

asked by Josée on December 14, 2015
87. ## algebra 1

because i have to sketch, label and mark each figure. sketch, label and mark each figure. 1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute

asked by Maram on April 19, 2011
88. ## Lincoln College Of New En

the Old Farmer’s Almanac stated that the average consumption of water per person per day was 123 gallons. To test the hypothesis that this figure may no longer be true, a researcher randomly selected 16 people and found that they used on average 119

asked by Paula on April 26, 2013
89. ## College physics-oscillations

A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume

asked by Marco on December 4, 2010
90. ## algebra

During a hurricane evacuation from the east coast of Georgia, a family traveled 450 miles west. For the first part of the trip, they averaged 25 mph less than the second part, where their average speed was 62mph. If the total time of travel was 9 hours,

asked by sarah on June 14, 2017
91. ## chemistry

The molar heat of solution of a substance is found to be +35.34 kJ/mol. The addition of 0.20 moles of this substance to 1.5 L water initially at 55. °C results in a temperature decrease. Assume the specific heat of the resulting solution to be equal to

asked by kate on February 16, 2011
92. ## chemistry

NH4NO3(s) + H2O(l) NH4NO3(aq) ΔH = +25.7 kJ What is the final temperature in a squeezed cold pack that contains 40.0 g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18 J/(g·°C) for the solution, an initial temperature of 25.0°C,

asked by lynn on July 15, 2012
93. ## physics

In one room the radiator has a dark color (emissitivity = 0.818). It has a temperature of 64.8 oC. The new owner of the house paints the radiator a lighter color (emissitivity = 0.417). Assuming that it emits the same radiant power as it did before being

asked by robert on May 21, 2012
94. ## thermodynamic

1.5kg water in a closed system initiallu have a pressure of 700 kPa and x=0.7.Then,water had been expanding at constant temperature process until the pressure decrease to 150kpa.During the process,1000kJ heat was transferred to the system.Determine the

asked by SYAZWANI URGENT on November 1, 2012
95. ## Math

A boat must be moored 25 feet away from a dock. The boat will be 10 feet below the level of the dock at low tide. What is the minimum length of rope needed to go from the boat to the dock at low tide?

asked by Anonymous on April 16, 2014
96. ## math

mount everset is 29,029 feet above sea level. How many yards above sea level is Mount Everest? Would I divide 29,029 by 3? 9,976 feet above sea level Would this be correct? Thank You.

asked by Jill on November 3, 2010
97. ## Chemistry for Engineers

A gas is confined to a container with a massless piston at the top. (Part C figure) A massless wire is attached to the piston. When an external pressure of 2.00 atm is applied to the wire, the gas compresses from 4.90 to 2.45 L. When the external pressure

asked by Lina on March 25, 2011
98. ## physics helpppp

Figure 10-35a shows a disk that can rotate about an axis at a radial distance h from the center of the disk. Figure 10-35b gives the rotational inertia I of the disk about the axis as a function of that distance h, from the center out to the edge of the

asked by andy on April 18, 2010
99. ## ms.sue check

water pollution in the united states and canada is caused by: a)acid rain b)runoff from agricultural chemicals c)industrial wastes D) all of the above since the 1970s the u.s and canada have reduced ________ around lake erie. A)unregulated boat traffic

asked by henry on August 17, 2009