# Questions Asked onSeptember 18, 2010

1. ## Chemistry

A 0.25g sample of a pretzel is burned. The heat it gives of is used to heat 50.g of water from 18 to 42 degrees C. what is the caloric value of the pretzel in kcal/g? Can someone walk me through step by step?

asked by Jason
2. ## Chemistry

175g of water was heated fro 15 to 88 degrees C. how many kilocalories were absorbed by the water? I got 94.5 kcal. Is this right?

asked by Jason
3. ## math

In a certain town, 25% of people commute to work by bicycle. If a person is selected randomly from the town, what are the odds against selecting someone who commutes by bibycle? A). 3:1 B). 3:4 C). 1:3 D). 4:1

asked by Sarah
4. ## Chemistry

A mixture contains only NaCl and Al2(SO4)3. A 1.45-g sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the precipitate is 0.107 g.

asked by Melissa
5. ## Chemistry

When a chemical cold pack is activated, a chemical reaction occurs that causes the pack to feel cold. - Describe the transfer of energy betwen a cold pack and the air around it.

asked by Anonymous
6. ## Chemistry

What minimum frequency of light is required to ionize potassium?The energy required to ionize potassium is 419kJ/mol?

asked by Ashley
7. ## Calculus

Our professor wants us to evaluate the limits analytically without using a table or a graph, and if it doesn't exist we must describe the behavor near the limit point. I'm not sure how to evaluate each side of a limit separately without looking at a table

asked by Anna
8. ## Physics

A wooden boxcar is moving along a straight railroad track at speed v1. A sniper fires a bullet (initial speed v2) at it from a high-powered rifle. The bullet passes though both lengthwise walls of the car, its entrance and exit holes being exactly opposite

asked by J
9. ## physics

A truck travels up a hill with a 7.2◦ incline. The truck has a constant speed of 19 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s.

asked by Brianna

the circle graph shows hamburger sales by various restaurants in a recent year. The total sales were $40 billion asked by Anonymous 11. ## chemistry How do you calculate the number of grams of solute in 0.250 L of 0.175 M \rm KBr? asked by betty 12. ## Chemistry How many calories are required at 0 degrees C to melt an ice cube with a mass of 25g? I got 2000 cal. Could you tell me if this is right? asked by Eric 13. ## math A class consist of 2/5 freshman,1/4 sophomores, and 1/10 juniors; the rest are seniors. What fraction of class are seniors? asked by Anonymous 14. ## visual Choose three (3) works of art from three artists from the Baroque period through the Postmodern era. Your three (3) works of art should come from the time periods or art movements covered in the reading from Unit 4 and Unit 5. Your choices must comply with asked by Anonymous 15. ## geometry YW is a bisector of asked by Tricia 16. ## chemistry If you mixed equal volume of .1 M HCl and .20 M Tris (pka=8.3), IS THE RESULTING SOLUTION A BUFFER SOLUTION? Why? or Why not? asked by nicki 17. ## math A roulette wheel has 18 red slots and 18 black slots numbered alternaetly with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players are not allowed to bet on asked by Zach 18. ## phy A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 340 km/h in a semicircular arc with a radius of 196 m. Determine the tangential acceleration of the car when it is halfway through the turn, assuming constant asked by ami 19. ## Chemistry Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, , can be titrated against a solution of potassium permanganate, . The following equation represents the reaction: asked by Peter 20. ## math The tread life of a particular tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 2000 miles. What is the probability that a randomly selected tire of this brand will last longer than asked by Madison 21. ## physics Highway safety engineers build soft barriers so that cars hitting them will slow down at a safe rate. A person wearing a seat belt can withstand an acceleration of -300 m/s². How think should barriers be to safely stop a car that hits a barrier at 110 asked by john 22. ## Chemistry Draw Bohr diagrams of the following: A) O and O2- I know how to draw the regular O bohr diagram. 2 electrons in the first shell, and 6 in the outer one, but I don't get how to draw a 02- diagram. Do I just take away 2 electrons from the outer shell? asked by Anonymous 23. ## chemistry why is the 5th ionisation energy(IE) of carbon so much larger than its 4th? asked by kabelo 24. ## Chemistry A volume of 70.0mL of aqueous potassium hydroxide(KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 19.2mL of 1.50M H2SO4 was needed? The equation is 2KOH+H2SO4->K2SO4+2H20 asked by Peter 25. ## medicine How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution? asked by Jessica 26. ## physics A car enters the freeway with a speed of 6.5 m/s and accelerates uniformly for 3.5 km in 3.9 min. How fast is the car moving after this time? Answer in units of m/s. asked by Anonymous 27. ## calculus A Norman window has the shape of a rectangle surmounted by a semicircle as in the figure below. If the perimeter of the window is 37 ft, express the area, A, as a function of the width, x, of the window. How do you do this problem? asked by B 28. ## Physics A point (labelled P in the figure) is attached to the rim of a disk of radius 0.2 m, which can turn around an axis through its center. It is rotating counterclockwise with a speed of 2.5 m/s. asked by Danielle 29. ## physics An object is shot from the back of a truck moving at 40 km/h on a straight horizontal road. The launcher is aimed upward, perpendicular to the bed of the truck. If air resistance is neglected, the object will fall: a. depends on the value of g b. in front asked by Anonymous 30. ## Chemistry Consider a 1.50-g mixture of magnesium nitrate and magnesium chloride. After dissolving this mixture in water, 0.500M of silver nitrate is added dropwise until precipitate formation is complete. The mass of the white precipitate formed is 0.641 g. asked by John 31. ## math If the probability that an identified hurricane will make a direct hit on a certain stretch of beach is 0.10, what are the odds in favor of a direct hit? a. 1:10 b. 1:9 c. 9:1 d. 8:1 asked by D 32. ## Chemistry An object made of aluminum has a mass of 8.37g. When it was placed in a graduated cylinder containing 20.0mL, the water level rose to 23.1mL. Calculate the density and the specific gravity of the object. For the density I got 2.7g/mL, and for specific asked by Eric 33. ## Chemistry- please help I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this: Dissolve 10g of NaOH in carbon dioxide free water and dilute to 100ml with the same solvent. Please explain how to perform this test. Do I boil 100ml of asked by anne 34. ## Math How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution? asked by Jessica 35. ## math How many ml of 50% dextrose should be added to 1 L of 0.9% NaCl to make a 5% dextrose solution? asked by Jessica 36. ## math to finance her community college education. Sarah takes out a loan for$2200. After a year Sarah decides to pay off the interest which is 4% of $2200. How much will she pay asked by Anonymous 37. ## Math On what interval(s) is the curve y=(2e^x)-(e^(-3x)) concave downward? asked by Joe 38. ## biochemistry How do you calculate the PH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of 1.0 M sodium lactate? asked by nicki 39. ## chemistry for an oxygen atom,wich requires more energy,tha addition of two electron or the removal of one electron?explain why asked by kabelo 40. ## Physics A girl notices a ball moving straight upward just outside her window. The ball is visible for 0.25 seconds as it moves a distance of 1.05m from the bottom to the top of the window. How long does it take before the ball reappears? What is the greatest asked by Jon 41. ## Physics When the dried-up seed pod of a scotch broom plant bursts open, it shoots out a seed with an initial velocity of 2.64 m/s at an angle of 30.0˚ below the horizontal. The seed pod is 0.465 m above the ground. How long does it take for the seed to land? What asked by MozAngeles 42. ## physics rewriting this, since it was typed wrong. In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.68 m/s, due west, turns asked by jo 43. ## math heidi left a 12% tip of$2.28 on a meal.What was the cost of the meal before the tip. What was the total of the meal including the tip

asked by Anonymous
44. ## physics

Here's a physics problem. I don't care about the answer, i just want to know how to do it. don't have to be too detailed.. but i don't really kno how to start this 1.) A model rocket blasts off from the ground rising straight upward with a constant

asked by jo
45. ## College Chemistry

a)What is the theoretical yield for this reaction under the given conditions? b)What is the percent yield for this reaction under the given conditions? 1.41gH2 is allowed to react with 10.4gN2,producing 2.46gNH3

asked by Alex
46. ## Physcis

An airplane flying at 120km/h due west moves into a region where the wind is blowing at 40km/h due east. If the plane's original vecotr velocity is Vplane, what is the expression for the plane's resulting velocity in terms of Vplane. a. 1/3 >Vplane b.

asked by Josh

A share of stock sold for $50 on Monday. On Tuesday it lost 5% of its Monday’s value. On Wednesday it lost 10% of its Tuesday’s value. On Thursday it lost 5% of its Wednesday’s value. What percent increase would the share of stock have to have on asked by Ida T. 48. ## math the width of a rectangle is fixed at 4cm. Determine in terms of an inequality those lengths for which the area will be less than 92cm^2 the length must be less than ? cm the solution is {L|L< ? cm asked by Anonymous 49. ## college-history What parallels, or differences, can you identify between Athenian expansionism in the age of the Peloponnesian War and the contemporary career of the American republic? asked by megan 50. ## Art So I'm trying to answer Leonardo da Vinci's statement on perspective. And the question is: How does our mnemonics trick FOPS (Fading, Overlapping, Placement, Size) Corroborate (confirm) the following statement by the great Renaissance Master Leonardo da asked by Sharon 51. ## college hello! i need help with homework sociology 1) Which of the following research errors is less prone to being classified as fraud and more likely to be considered as simply sloppy work? A) asking biased questions B) choosing a biased sample c)analyzing the asked by washington 52. ## algebra Solve by the elimination method: 0.3x-0.2y=4 0.4x+0.5y= -29/19 (fraction)?? Please Help I do not understand Algebra!! asked by Shannon 53. ## Physics Three Coulombs of charge flow through a wire in 150 ms. If the current ceases to flow (goes to zero Amps) for the following 850 ms, what is the average current over this one-second period? asked by Robby 54. ## Chemistry -help To determine the sodium carbonate content & total alkali in NaOH, the following steps were performed:- 1) 2.0g of NaOH was dissolved in 80ml of CO2 free water. 2) 3 drops of phenolphthalein indicator were added and the solution was titrated with 1M HCl. asked by anne 55. ## chem- electrochem-HELP Determine the equilibrium constant, Keq, for the reaction 5.3 10–19 18.30 1.7 1054 1.9 1018 5.7 10–55 i have tried this but get the wrong answer. i have the half-rxn and fugured out E=0.536. then used eq dG=-nFE, followed by dG=-RTInK. PLS HELP asked by lucylu 56. ## algebra What is 8.9 + 1.2(3a-1)=14.9 ? asked by Jasmine 57. ## math Explain an error problem in each of the following: a) 13/35=1/5, 27/73 = 2/3, 16/64 = 1/4 b) 4/5+2/3=6/8, 2/5+3/4=5/9, 7/8+1/3=8/11 c) 8 3/8-6 1/4=2 2/4, 5 3/8-2 2/3=3 1/5, 2 2/7-1 1/3=11/4 d) 2/3*3=6/9, 1/4*6=6/24, 4/5*2=8/10 asked by Anonymous 58. ## Biology Populations are frequently NOT in equilibrium due to selection or other evolutionary forces. Imagine a population of 100 individuals. Forty-nine of the individuals are homozygous dominant for beady-eye gene, 9 are heterozygous and 42 are homozygous asked by Emma 59. ## history I have to do a research aper on any topic in American history. One part of history that I enjoy studying is when new inventions came around or when things become more modern (think housewife using vacuum type scenario if you get what I mean) or like when asked by kelli 60. ## parenting what does the following parenting quotes mean; when you have brought up kids, there are memories you store directly in your tear ducts by robert brault your children need your prescence more than your presents by jesse jackson to bring up a child in the asked by Ted 61. ## Science What weather would it be when: A. a cold front is moving into an area that has warm, moist air. B. A warm front is moving into an area that has cold, dense air. C. A cool sea breeze is blowing inland, causing warm, humid air to rise. D. Air pressure is asked by Bruno 62. ## Science What weather would it be when: 1. A thunderstorm is developing spinning winds at it's center 2. A low-pressure center is over the Atlantic Ocean where the water temperature is above 27°C 3. Cold air is pushing warm air where the air is 2°C and the ground asked by Dhaulagiri 63. ## chem h/w i did a lab and i need to find out the melting point for lauric acid and lauric acid with another substance. the teacher told us to figure it out using excel. this is my graph. tinypic. com/view.php?pic=1605yev&s=7 can someone help me in figuring out the asked by RiChy 64. ## College Physics A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk? asked by Noelle 65. ## Algebra 2 Perimeter of Triangle: the length of the sides of a triangle are 1/x, 2/x, and 2/3x meters. Find a rational expression for the perimeter of the triangle asked by Tommie 66. ## math the front of a regulations goal for a professional sport is 7ft wide and 3ft high, find its area asked by Anonymous 67. ## math how do you write twenty-two millionths? (in standard form using numbers) asked by candy 68. ## math 2x^4y^2+4x^3y^3+2x^2y^4 asked by Stella 69. ## math 6x^2+21x-45 asked by adie 70. ## math The diameters of ball bearings produced in a manufacturing process can be described using a uniform distribution over the interval 2.5 to 8.5 millimeters. What is the probability that a randomly selected ball bearing has a diameter less than 4.5 asked by j 71. ## chem- electrochem-HELP Given a cell based on the spontaneous reaction 2AgCl(s) + Zn(s) ® 2Ag(s) + 2Cl– + Zn2+ If the zinc ion concentration is kept constant at 1 M, and the chlorine ion concentration is decreased from 1 M to 0.001 M, the cell voltage should increase by 0.06 V asked by lucylu 72. ## 7th grade math After 1 hour,Jon had finished 5/9 of a long-distance race, and Ling had finished 7/9 of it. At that time, who had finished a greater fraction of the race, and by how munch. asked by Melea 73. ## algebra n-3/4+n+57=5/14 asked by Anonymous 74. ## math In each of the following, order the decimals from greatest to least: a) 13.4919, 13.492, 13.49183, 13.49199 b) -1.453, -1.45, -1.4053, -1.493 asked by Anonymous 75. ## algebra Help, Can anyone show me how to do the formula to solve these equations? 4x-5y=38 7x-8y=-22 If you can show me the right way to solve, I do not understand how to get the answer. asked by James H. 76. ## physics the mean radius of the earth is 6,000,000 meters. Express this value in kilometers asked by karla 77. ## Organizational Behavior Questions 1. Research conducted by Luthans supports the belief that promotions are base on performance. True or false 2. Tenure is negatively related to turnover. True or False. 3. Age and avoidable absences are negatively related. True or False. 4. Which asked by Edith 78. ## CALCULUS Use the product rule to calculate the derivative. dh dx x = 4 , h (x) = (x^(-1/2) + 7x)(9 - x^-1) very weird.. i know how to do it, i used product rule and got an answer in decimal but the website is not accepting it. Can any one help me?... asked by Jacob 79. ## maths What is 174.36 rounded up to nearest tenth asked by lesley 80. ## math Can someone help me please? I have 4 equations that need to be matched up to different graphs. I need to know how to work the equations so I can match them to the graphs. 6y>15-3x 5x-3=2y -x y+x asked by barbHELP!!!! 81. ## Chemistry I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this: Dissolve 10g of NaOH in carbon dioxide free water and dilute to 100ml with the same solvent. Please explain how to perform this test. Do I boil 100ml of asked by anne 82. ## math Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12 pounds. Find the probability that a person on this diet loses between 9 and 12 pounds in the first two months. a. 1/4 b. 1/2 c. 1/3 asked by luke 83. ## math 20x=4y+9 find the slope asked by Anonymous 84. ## english definition of the word 'illustrious' and a sentence using the word asked by Anonymous 85. ## chemistry why is the ionisation energy of oxgen less than that of nitrogen even if oxygen is to the right hand side of nitrogen? asked by kabelo 86. ## math 56x^3y^5-40x^2y^6+8x^2y^3 asked by Stella 87. ## math a^2b^2-2a^2b-15a^2 asked by Bev 88. ## Algebra 2 What two equations can you write from |y+3|+5=2y? I know one is y+3=2y-5, which becomes 8. Is there another equation possible? asked by Anna 89. ## English III who are the two bidding on the monkey music box in the phantom of the oprea? asked by Betty 90. ## statistics which of the following measures of dispersion are based on deviations from the mean? asked by b 91. ## physics Here's a physics problem. I don't care about the answer, i just want to know how to do it. don't have to be too detailed.. but i don't really kno how to start this 1.) A model rocket blasts off from the ground rising straight upward with a constant asked by jo 92. ## math from a base elevation of 8600ft a mountain peak in Colorado rises to a summit elevation of 14660ft over a horizontal distance of 15838ft find the grade of the peak . the grade of the peak is ? % asked by Anonymous 93. ## math a worker on the production line is paid a base salary of$210 per week plus $.55 for each unit produced. One week the worker earnedh$329.35. How many units were produced.

asked by Anonymous
94. ## Math

Input, 0,1,2,3 output: 5,7,15,44 What is the Domain and What is the Range? How would I figure this out? Can anyone explain on how they found them?

asked by June
95. ## calculus

Use the following function values to calculate H '(1). f (1) f '(1) g(1) g'(1) 3 -4 8 -1 H(x) = x/(g(x) f(x)) How would this problem be done... i found H(x) to be 1/24 but don't know how to find the derivative of h'(1)

asked by kate
96. ## statistics

14. Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking—even if they are not exposed to the usual

asked by rick
97. ## chemistry

How many milliliters of 1.50 M \rm KOH solution are needed to provide 0.140 mol of \rm KOH

asked by betty
98. ## Biology

In what ways are plasma membranes, cell walls, capsules, and sheaths only the outer limits of a cell and not the cell"s boundaries?

asked by Bea
99. ## math

In a triangle ABC,angle B is 3 times angle A and angle C is 5 degrees less than 6 times angle A. Find the size of the angles.

asked by Anonymous
100. ## economics

Are there times when one’s use of the police force diminishes the use for others? If so, can it be defined as a public good?

asked by chris
101. ## business

Why? Write a 200- to 300-word response to the following questions based on “Superhero in the Cubicle” in the Electronic Reserve Readings: o What technological advancements in communication were discussed in the article? o Choose two communication types

asked by Anonymous
102. ## math

Find the total weight of the boxes of pecans in a shipment of 3 lb boxes of pecans and 2 lb boxes of walnuts. 1)there were 24 fewer 2 lb boxes of walnuts than 3 lb boxes of pecans. 2)The total weight of the shipment was 462 lb. How do I set this up in a

asked by Nene
103. ## chemistry

how would one do this problem.. 2y^-3 = 4e^(-x/2)/(1+e(-x/2))

asked by Jacob
104. ## Finance

I need to write an essay on if I think producing more money will help or hurt my local economy. The essay needs to clearly state the reasons behind my theory on how much money I should produce for my economy. It also needs to have one internet site that

asked by Tom
105. ## Chemistry

How does a compound's properties compare to those of its component elements? Provide an example. I don't get this q.

asked by Anonymous
106. ## philosphy

Cathy owes six overdue movies to her local video store. Since each of Cathy’s overdue videos is a comedy, only comedies are currently overdue at Cathy’s local video store. Which one of the following premises, if added to the statements above, would

asked by Anonymous
107. ## english

In Florida, citrus trees grow an important crop. would the subject be Florida?

asked by Anonymous
108. ## Calculus

I am sorry. I am really struggling with limits. I am not sure of an answer for this problem either: Show an example that the limit as x goes to a f(x) goes to [f(x)+g(x)] may exist even though neither the limit as x goes to a f(x) approaches f(x) or g(x)

asked by John
109. ## english

From Texas comes the Star Ruby grapefruit. woule the subject be Texas?

asked by Anonymous
110. ## english

definition of the word " instillation" and using this word can someone please make a sentence??..

asked by Anonymous
111. ## science (nature)

Can you please tell me more about a Sugar Maple tree?

asked by Anonymous
112. ## social studies

How did buddism spread through Asia?

asked by Cay
113. ## algebra2

1. solve: 5+4x-2x^2=0 2. find k so that the like kx-3y=4k is a. parallel to like 2x-4y=1 - for this i got y=1/2x-1/4... is that right? b. perpendicular to line x-6y=2

asked by Anonymous
114. ## Algebra 2

Is it possible to solve |2x| + 3 =x? I got x= -3, but it doesn't seem to work when you plug it into the original equation to check it..

asked by Anna
115. ## GPA?

Would taking extra classes online help raise my GPA to a 2.8?? (I'm a junior and i need it raised before the end of my senior year. I have a 1.27 Grade Point Average right now.)

asked by Joe
116. ## MATH

from a base elevation of 8600ft a mountain peak in Colorado rises to a summit elevation of 14660ft over a horizontal distance of 15838ft find the grade of the peak

asked by Anonymous
117. ## physics

A cheetah runs a distance of 102 m at a speed of 27 m/s and then runs another 102 m in the same direction at a speed of 34 m/s. What is the cheetah's average speed?

asked by john
118. ## pre-cal

Solve (x+2)/(x+1) -2 < 0 I know the LCD is x + 1. (x+2-2x-2)/(x+1) < 0 (-x )/(x+1) < 0 But somehow, I got the wrong answer. The answer is (4, 7]. But I don't know where I went wrong.

asked by Priscilla
119. ## parenting

what does this quote mean ''there comes a time when a woman needs to dtop thinking about her looks and focus her energies on raising her children. this time comes at the moment of conception. A child needs a role model, not a supermodel'' by astrid alauda

asked by Ted
120. ## algebra

solve each equation 4(n+3)=2(6+2n)

asked by kate
121. ## math

56x(3)y(5)-40x(2)y(6)+8x(2)y(3)

asked by iris
122. ## math

solve the equation and check 1.9(5-x)=1.7(3-x)

asked by Anonymous
123. ## math

Explain an error problem in each of the following: a) 13/35=1/5, 27/73 = 2/3, 16/64 = ¼ b) 4/5+2/3=6/8, 2/5+3/4=5/9, 7/8+1/3=8/11 c) 8 3/8-6 ¼=2 2/4, 5 3/8-2 2/3=3 1/5, 2 2/7-1 1/3=1 ¼ d) 2/3*3=6/9, ¼*6=6/24, 4/5*2=8/10

asked by Anonymous
124. ## math help

4(x+5)=3(x-4)+x

asked by Anonymous
125. ## Aed 204

Assignment: Creating an At-Risk Program Resources: Ch. 8 of Multicultural Education and Appendix E. Imagine that you have been asked to serve on the advisory board for a new, alternative school program in your school district. The advisory board must

asked by Niki
126. ## phy

Determine the radial acceleration of the car at this time. If the curve were flat, what would the coefficient of static friction have to be between the tires and the roadbed to provide this acceleration with no slipping or skidding?

asked by ami
127. ## 9th grade

1/3 x 1/3 ?

asked by Anonymous
128. ## math

solve each equation 3/8+b/3=5/12

asked by Anonymous
129. ## English

Lately, tacos have become my favorite food. ?would have become my favorite food be the predicate?

asked by Anonymous

value of $25000.00 compounded semi annually at 7% for 5 years asked by Bill 131. ## English Can you please tell me if the following description of a classroom is correct? 1) My classroom is on the ground floor, just opposite the teacher's room. 2) It is very large and full of light (sunny??) since it has got two big windows overlooking the asked by Franco 132. ## Physics/math A deep mountain valley is separated by two vertical cliffs. One cliff is 600 meters high and the other is 400 meters high. A cable car runs from the foot of each cliff to the top of the other cliff. At what height above the ground do the two cable cars asked by CJ 133. ## geography what is this word unscrambled aemampltfeosne asked by sarah 134. ## algebra 5square root 27 plus 7 square root 3 asked by hilda 135. ## English Sometimes Mom makes chow mein. Would the predicate be sometimes makes chow mein? asked by Anonymous 136. ## Physics A shell is launched at 140 m/s 56.0 degrees above the horizontal. When it has reached its highest point, it launches a projectile at a velocity of 110 m/s 35.0 degrees above the horizontal relative to the shell. 1) Find the maximum height (in m) about the asked by . 137. ## Physics A 48V battery delivers power to a golf cart. The golf cart drives for 45 seconds while the batteries deliver 12A of current. How much energy (in Joules) is delivered during the drive? asked by Phil 138. ## english Beyond those distant mountains lies an ancient American Indian village. would the subject be ancient American Indian Village? asked by Anonymous 139. ## college I need to site from two essay one is the Famine,affluence,and morality(pete singer) and the other is Garrett hardin the Lifeboat. I have read both essay.Now I need to cite from them and put in apa format can some please help me asked by sabrina 140. ## PHYICS Pick the radioactive isotope in each set 14/7 N OR 23/13 AL EXPLAIN A)its atomic number is greater than 83 B)it has fewer n than p in the nucleus C)it is an odd-odd nuclide none of the above asked by Ashley 141. ## Physics What is the period of the minute hand of a clock? asked by Noelle 142. ## algebra 2/5x+1/3=3 2/15 asked by denise 143. ## English Is the book new shoes for sylvia authentic if so why? asked by Maggie 144. ## cjs 230 I need help with my final project in cjs/230 asked by bob 145. ## math write in standard form using numbers - Two thousand twelve ten-thousandths? asked by candy 146. ## math 7p-8q=3 determine whether (1,-3) is a solution asked by Anonymous 147. ## Astronomy If the sidereal period of the moon was 29.0 days(instead of the 27.32 days) what would be its synodic period? HINT: consider how far around the sun the Earth/Moon will have travelled in 29.0 days asked by Steve 148. ## Psychology Can you think of any examples of how interactions with a partner or spouse may have been influenced by what you learned by observing other family members or even television? I know one example might be seeing your parents argue when you were a child. But I asked by Linda 149. ## math 3x^-x-2=0 asked by iris 150. ## Physics Three Coulombs of charge flow through a wire in 150 ms. If the current ceases to flow (goes to zero Amps) for the following 850 ms, what is the average current over this one-second period? asked by Bobby 151. ## Physics a)Why is it more important for an aircraft pilot to know the wind velocity than the wind speed? b)Why is it more important for all pilots to use the same conventions when describing velocity? asked by Emily 152. ## phy is that true a block on a flat surface. The normal force on the block and weight of the block make up a third law pair. asked by ami 153. ## math what is the avarage of:89,84,63,79 asked by lolo 154. ## phy Why gravitional force and centrietal force is same between earth and moon? asked by ami 155. ## Biology WHat is the different between determinate and indeterminate cell differentiation? asked by Bubba 156. ## health Dr Bob's computerized records are damaged by a power surge,Which of the following is true? a) Dr Bob is not at fault b)Dr bob is at fault c)The records custodian, but not dr bob will be liable d)dr bob is at fault unless he had proper surge protection asked by Anonymous 157. ## parenting i do not know what conception means in the quote asked by Ted 158. ## math the signs of the first and second coordinate are always the same in quadrants . Type I ,II,III, or IV. Use a comma to separate answers as needed. asked by Anonymous 159. ## 7th grade math Does 1/3 + 5/9 - 5/12 = 5/9 + 5/12 - 1/3 ? Explain Thank you :p asked by Melea 160. ## Math 156 Bret and Barbara found out that for a given charity, a family whose income is$30,000 gave $400 and a family whose income is$300,000 gave \$4,000. Bret says that the family with the higher income gave more than the family with the lower income in

asked by Ida T.
161. ## Orgaiornizational Behav

Research conducted by Luthans supports the belief that promotions are base on performance. True or False

asked by Edith
162. ## chemistry

How many moles of \rm HNO_3 are present in 40.0 mL of a 2.40 M solution of nitric acid?

asked by betty
163. ## algebra

solve the equation and check -(9x-4)-(2x-6)+7=-8(x-9)-(6x+2)+4

asked by kate
164. ## health

which of the following will enhance the possibility that an incident report will not be discoverable during litigation? a) writing "not discoverable" on the first page of the report b)distributing it only to hospital employees c) distributing it only to

asked by Anonymous
165. ## 7th math

how to do 345x 7.899=

asked by erica
166. ## algebra

The sales representative informs you that there are 56 homes for sale with two floor plans still available, Use x to represent floor plan one and y to represent floor plan two. Write an equation that illustrates the situation.

asked by sarah
167. ## Biology

In what ways are plasma membranes, cell walls, capsules, and sheaths only the outer limits of a cell and not the cell"s boundaries?

asked by Bea
168. ## Biology

In what ways are plasma membranes, cell walls, capsules, and sheaths only the outer limits of a cell and not the cell"s boundaries?

asked by Bea
169. ## Biology

Are dicots divided into woody and herbaceous stems?

asked by Emily
170. ## history

i have to write a double spaced one page essay on the battle of passchendaele, but i don't know anything about it. help please?

asked by Rebecca
171. ## algebra

help I don't understand the recursive formula

asked by sami
172. ## social studies

I need help with my abc book on california HELP ME!

asked by Makayla
173. ## Science

A passenger in a moving train drops an apple. Describe how a man standing by the train tracks sees the apple falling when he looks through the window.

asked by Rachel
174. ## calculus

x = 6 h(x) = (x-1/2 + 5x)(1 - x-1)

asked by Jay
175. ## english

Last night Dad prepared spaghetti and a salad for supper. ? is prepared spaghetti and salad for supper the predicate?

asked by Anonymous
176. ## English

In the United States, people enjoy a wide varietypf food. ? would the predicate be In the United State enjoy a wide variety of food?

asked by Anonymous
177. ## geometry

1£©sketch six points a b c d e and f, no three of which are collinear. name the lines defined by these points. how many lines are there¡£¡£ 2£©describe a way to find points that divide a segment into fourths¡£ 3£©a classmate tells you " finding

asked by 000
178. ## shiloh

a rock on earth has a mass of 250kg.what is its mass and weight on the moon?

asked by mel
179. ## CALC BC

How do I find the derivative of x^ (1/(x-1)) is it (1/(x-1)) x^[1-(1/(x-1))] * (-1/ (x-1)^2) ?? If not, can you please write out what rule I should use? Thank you very much!

asked by APpreciate student
180. ## math

how to find the x and y intercept of cubic functions

asked by jasmine
181. ## Science

Imagine that a group of factories and power plants lies 200 kilometers to the west of a forest where the trees are dying. Describe three steps in a process that could be causing the trees to die.

asked by sally
182. ## physics

Here's a physics problem. I don't care about the answer, i just want to know how to do it. don't have to be too detailed.. but i don't really kno how to start this 1.) A model rocket blasts off from the ground rising straight upward with a constant

asked by jo
183. ## Calculus

Is there a number "a" such that the limit as x approaches -2, f(x) approaches (3x^2+ax+a+3)/(x^2+x-2) exist?

asked by John
184. ## phy

is that true faster objects have a greater acceleration than slower objects?

asked by ami
185. ## Chemistry

Which intermolecular forces between the war and protein are affected by the addtion of strong acids and bases?

asked by Anonymous
186. ## geometry

What does angle QPT = 120degrees 48minutes and 30 seconds mean?

asked by sara
187. ## english

After three to five years, fruit grows on the new trees. would the subject be grows on the new trees?

asked by Anonymous
188. ## Science

How is the air motion in the eye of a hurricane similar to the air motion at a high pressure center?

asked by Ashleigh
189. ## spanish

Hello, I am in spanish 2, and we are studing indirect/direct object pronouns and preterite tense. We were supposed to write a paragraph on what we did this weekend. I was wondering if someone could look over my paragraph and see if there are any errors.

asked by Angie
190. ## french

is this right: black in french is 'noir' for masculin form and for feminin form it is 'noires' please correct me

asked by Anonymous
191. ## math

6x^2+21x-45

asked by iris
192. ## PHY

Is that true the net force on the exit sign is 25N

asked by ami
193. ## Math

The exterior angles of a triangle measure x°, (2x)°, and (3x)°. What is the value of x?

asked by Chase
194. ## math

At what time should each boat start so all the boarts will cross the finish line at 100 meters at the same time?

asked by Hector
195. ## physics

how do you divide 1.49457 x 10^11 by 3.00 x 10^8? thanks for the help

asked by kelly
196. ## algebra

2y^-3 = 4e^(-x/2)/(1+e(-x/2)) my teacher gave this problem in my chem class and i don't know what he is really asking , does any one have an idea if i have to solve for y or what's going on..

asked by Jacob
197. ## photo

Can somebody define these terms? I looked up some of the words in google and couldn't understand a thing! --value --contrast --colour key --symmetrical balance --asymmetrical balance --rhythym --movement --depth of field --focal point --camera angle --ISO

asked by Bobby
198. ## math

solve equation 3(x+1)+5=3x+2

asked by Anonymous
199. ## english

sentence using the word 'perennial'

asked by Anonymous
200. ## math

data regarding the value with respect to time is ? dollars per year

asked by Anonymous
201. ## math

2(x-8)+x=3(x-6)+2

asked by Anonymous
202. ## math-repost

Data regarding the value of a particular color copier is representing in the graph. Find the rate of change of the value with respect to time, in dollars per year. The line goes from 8 vertical to 10 horizontal. The points on the graph are on the value 4

asked by Anonymous
203. ## math

determine whether (3,7) is a solution of 6p-6q=-2

asked by Anonymous
204. ## U.S. Government

I don't get how the Homeland Security Advisory System is STILL at the "Elevated" level. There could be a significant risk of terrorist attacks in the future?

asked by AL 92
205. ## algebra

save a 100 a month for 30 yrs at 3% interest compounded monthly how much do you have at the end of 30 years what are the steps to solve this problem

asked by sami
206. ## Algebra 2

Is the solution to 0 ≤ |4u - 7| u ≥ 7/4?

asked by Anna
207. ## English

Tomorrow Erica will make German potato salad. Would the predicate be Tomorrow will make German potato salad?

asked by Anonymous