Nicole

Most popular questions and responses by Nicole
1. physics

An object with mass 3.0 kg is attached to a spring with spring stiffness constant k = 300 N/m and is executing simple harmonic motion. When the object is 0.020 m from its equilibrium position, it is moving with a speed of 0.55 m/s. (a) Calculate the

asked on March 7, 2012
2. Intro to Computers

You are setting up a desktop computer for an AutoCad specialist who needs a minimum of 125 GB of RAM. Which operating system below would be best-suited for his needs? A. Windows 8 Home 64-Bit Edition B. Windows XP 32-Bit Professional Edition C. Windows

asked on January 13, 2014
3. chemistry

an unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0 degrees celcius. show a corrct numerical sat up for calculating the number of moles of nano3(gram-formula mass = 85.0 grams per mole) used to make

asked on April 23, 2012
4. Physics

A large crate filled with physics laboratory equipment must be moved up an incline onto a truck. 1. The crate is at rest on the incline. What can you say about the force of friction acting on the crate? a. The friction force point up the include b. The

asked on September 22, 2008
5. physics

The combined mass of a race car and its driver is 600. kilograms. Traveling at a constant speed, the car completes one lap around a circular track of radius 160 meters in 36 seconds. A) Based on the given information, calculate the speed of the car. B)

asked on January 10, 2010
6. Chemistry HELP

What is the velocity of an electron that has a de broglie wavelength approximately the length of a chemical bond? Assume this length to be 1.2 X10^-10 m.

asked on September 5, 2015
7. Chemisrty Lab

dimensions of a concrete pile are 14 inchesx14 inches x 15 feet. (1 meter=3.28 feet) the pile has 4 faces and 2 ends. 1>what is the surface area in square feet, of a single pile? exclude the ends of the pile. 2>What is the total surface area in square

asked on September 11, 2007
8. Chem

What is the balanced net ionic equation for copper(2)chloride and potassium carbonate ?

asked on September 8, 2015
9. Trig

A weight is oscillating on the end of a spring. The position of the weight relative to the point of equilibrium is given by y=1/12(cos8t-3sin8t), where y is the displacement (in meters) and t is the time (in seconds). Find the times when the weight is at

asked on October 27, 2014

why did miss muffet need a road map

asked on October 8, 2008
11. Math

If the legs of a right triangle have lengths of 6 inches and 8 inches, what is the length of the hypotenuse in inches? A.11 B.13 C.10 D.16 Is the answer C?

asked on October 25, 2016
12. Algebra 2

A large asteroid crashed into a moon of a planet, causing several boulders from the moon to be propelled into space toward the planet. Astronomers were able to measure the speed of one of the projectiles. the distance (in feet) that the projectile traveled

asked on February 18, 2015
13. Chemistry

An analysis of nicotine (MW = 162 g/mol) gives 74.0% carbon, 8.65% hydrogen, and 17.3% nitrogen. What is the TRUE (MOLECULAR) formula for nicotine? All I need are the formulas!!

asked on September 16, 2015
14. Chemistry

For the reaction 2 NO (g) + Cl2 (g) → 2 NOCl (g) If the concentration of NO is tripled, the rate of the reaction increases by a factor of nine. If the concentration of Cl2 is cut in half, the rate of the reaction is decreased to half the original rate.

asked on April 17, 2016
15. English

Identify the italicized part of the sentence. The main event will be a memory contest. subject predicate direct object indirect object predicate noun predicate adjective

asked on October 30, 2014
16. Stats

Exercise 6-8 The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 235 customers on the number of hours cars are parked and the amount they are charged. Number of Hours Frequency Amount Charged 1 18 \$3 2 33 7

asked on September 28, 2010
17. chemistry

At 23°C, Kp = 0.075 for the equilibrium: NH4HS (s) ↔ NH3 (g) + H2S (g) A sample of solid NH4HS is placed in a closed vessel and allowed to equilibrate. Calculate the equilibrium partial pressure (atm) of ammonia, assuming that some solid NH4HS remains.

asked on September 14, 2012
18. math

What is the loop that forms after many iterations when the initial value of g is 1.7? What is the loop that forms after many iterations when the initial value of g is 1.72?

asked on February 5, 2017
19. math

a 12 cm by 16 cm picture is mounted with border of uniform width on a rectangular frame. if the total area of the border is 288 cm2, what is the length of the side of the frame?

asked on July 21, 2015
20. geometry

A tourist in France wants to visit 5 different cities. If the route is randomly selected, what is the probability that she will visit the cities in alphabetical order? Answer choice: a)120 b)1/5 c)1/120 d)1/25

asked on April 15, 2010
21. Geometry

How do you go about finding the lateral area of a trianglar prism? Ex: The base of a triangular prism is an equilateral triangle with a perimeter of 42 cm. If the height of the prism is 10 cm, find the lateral area. Thanks for the help in advance

asked on January 15, 2010
22. Math

A work crew of 3 people requires 3 weeks and 2 days to do a certain job. How long would it take a work crew of 4 people to do the same job if each person of both crews works at the same rate as each of the others? Note: each week contains six work days.

asked on September 10, 2009
23. Chemistry

Based on the following equation: 2AgNO3 + CaCl2 > 2AgCl + Ca(NO3) When 50 g AgNO3 are combined with 1.45M CaCl2 solution, what volume of the 1.45M CaCl2 solution would be needed to precipitate all of the silver as AgCl?

asked on April 25, 2017
24. Statistics

A retail shop accepts only cash or checks. Suppose that 54% of its customers carry cash, 51% carry checks, and 71% carry cash or checks (or both). What is the probability that a randomly chosen customer at the shop is carrying both cash and checks?

asked on October 22, 2011
25. english

In "Why, You Reckon?" what argument does the other man use to convince the narrator to team up with him? What lesson do you think the narrator learned by the end of the evening? I have part of the answer but I don't now how to put it in ACE format.

asked on January 23, 2015
26. English

Which of the following conflicts in Poor Fish is the most importance -individual vs. self, individual vs. another, individuals. society vs. nature support your answer using example from the story please help this is and essay and I'm confused thank you.

asked on October 17, 2017
27. Physics

The instant before a batter hits a .14 KG baseball, the velocity of the ball is 45 meters per second west. The instant after the batter hits the ball, the ball's velocity is 35 meters per second eat. The bat and ball are in contact for 1.0 x 10 ^-2 second.

asked on March 9, 2010
28. physics

A student sits on a freely rotating stool holding two weights, each of which has a mass of 3.00 kg. When his arms are extended horizontally, the weights are 1.00 m from the axis of rotation and he rotates with an angular speed of 0.750 rad/s. The moment of

asked on December 5, 2006
29. Chem II

The conversion of glucose into lactic acid drives the phosphorylation of 2 moles of ADP to ATP and has a standard free energy of -135 kJ/mol. C6H12O6 + 2 HPO4 + 2 ADP + 2 H+ --> 2CH3CH(OH)COOH + 2 ATP + 2H20 What is the standard free energy for the

asked on April 7, 2015
30. chemistry

why does water,oil,acetone and isopropanol have the same concave meniscus shape?

asked on May 25, 2015
31. Chemistry

On average, Earth's crust contains about 8.1% aluminum by mass. If a standard 12-ounce softdrinks can contains approximately 15g of aluminum, how many cans could be made from one ton of the Earth's crust?

asked on June 27, 2018
32. chemistry

A sample of N2O effuses from a container in 45 seconds. How long would it take the same amount of gaseous I2 to effuse from the same container under identical conditions?

asked on October 16, 2008
33. Chemistry

Rank the following in order of increasing vapor pressure at 298 k: CH3CH2OH, CH3OCH3, CH3CH2CH3.

asked on December 11, 2015
34. Social Studies

2. How does India’s form of government contrast with the governments of Pakistan and Afghanistan? India is an Islamic republic; the others are not. Pakistan and Afghanistan have a long history of democratic government. India does not have a constitution.

asked on March 6, 2014
35. English, Written Communication

Which of the following are examples of coordinate headings? A. 3, b, iii B. A, i, a C. ii, 2, B D. A, B, C My answer was C but i got it wrong, is it A? PLEASE HELP CANT FIND IT IN MY TEXT BOOK

asked on May 22, 2015
36. Chemistry

Describe the procedure you would follow to determine the concentration of vitamin c in a sample if the volume of dcpip required to reach the end point were more than the 10-mL graduated cylinder could hold. The titration must still be carried out in the

asked on February 5, 2017
37. Chemistry

What mass of octane must be burned in order to liberate 5510 kJ of heat? ΔHcomb = -5471 kJ/mol.

asked on March 26, 2011
38. Trig

Two tracking stations are on the equator 161 miles apart. A weather balloon is located on a bearing of N 32°E from the western station and on a bearing of N 16°E from the eastern station. How far is the balloon from the western station? Round to the

asked on November 19, 2014
39. chemistry

When 1.0 of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 How many megajoules are released when 9.0 of gasoline burns?

asked on September 10, 2011
40. Chemistry

A 100 milliliter sample of 0.100-molar NH4Cl solution was added to 80 milliliters of a 0.200-molar solution of NH3. The value of Kb for ammonia is 1.79 x 10^-5. (a) What is the value of pKb for ammonia? (b) What is the pH of the solution described in the

asked on April 26, 2010
41. Math

Dave takes out a 23-year mortgage of 200000 dollars for his new house. Dave gets an interest rate of 13.2 percent compounded monthly. He agrees to make equal monthly payments, the first coming in one month. After making the 65th payment, Dave wants to buy

asked on September 12, 2017
42. Chemistry

How many atoms of mercury are present in 3.2 cubic centimeters of liquid mercury? The density of mercury is 13.55 g/cc. Answer in units of atoms.

asked on September 16, 2015
43. Chemistry

How many potassium ions are present in the following: 1) 3 moles of potassium chloride.

asked on August 28, 2016
44. Chemistry

How many grams of acetic anhydride are needed to react with 3.82g of salicylic acid?

asked on April 23, 2014
45. Introduction to Computers

The command prompt found on Windows 7 and Windows 8 is very similar to the interface of what past operating system? A. Dos B. Windows 95 C. Windows 98 D. Windows NT

asked on January 9, 2014
46. Science

3. What can scientists learn from the rate at which radioactive elements decay? (1 point)

asked on November 6, 2013
47. Science

3. What can scientists learn from the rate at which radioactive elements decay? (1 point)

asked on November 6, 2013
48. AP Chemistry

which of the following is the most polar? 1. I3- 2. XeF2 3. SCN- 4. O3 5. N2O i know it's not I3- or SCN-. which one would it be.

asked on August 8, 2010
49. Physics

No glass is perfectly transparent. Mainly because of reflections, about 92% of light passes through an average sheet of clear windowpane. The 8% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is

asked on November 28, 2012
50. Math

A person standing close to the edge on the top of a 160-foot building throws a baseball vertically upward. The quadratic function s(t) = -16t^2 +64t + 160 models the ball's height above the ground, s(t), in feet, t seconds after it was thrown. After how

asked on October 18, 2011
51. Chemistry

If 8.00 g of ammonuim nitrate is dissolved in 1000 ml of water for use as a plant fertilizer, the water decreases in temperature form 21.00C to 20.39 C. Determine the molar heat of solution of ammonium nitrate

asked on May 11, 2010
52. Optimization Calculus

A three sided fence is to be built next to a straight section of river, which forms the fourth side of a rectangular region. There is 96 ft of fencing available. Find the maximum enclosed area and the dimensions of the corresponding enclosure. I drew a

asked on May 2, 2015
53. PHYSics

a child with a mass of 29 kg sits at a distance of 4m from the pivot point of a seesaw. where should a 15 kg child sit to balance the seesaw?

asked on April 22, 2014
54. physics

A boy reaches out of a window and tosses a ball straight up with a speed of 15 m/s. The ball is 20 m above the ground as he releases it. Use energy to find the following.

asked on December 1, 2009
55. Calculus rate of change

A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. After 5 minutes, how fast is the base area of the base increasing? I honestly have no

asked on July 18, 2016
56. Geargia State History (Social Studies)

2. Officials whose jobs are not provided for in the constitution but are required by law are known as __________. A. Constitutional Officers B Secretaries Of State C. Deputies D. Statutory Officials 5. True False: The state supreme court is an appellate

asked on January 31, 2017
57. Careers

1. Small family farms are part of the agribusiness pathway. .True .False

asked on October 15, 2018
58. Chemistry

Calculate the standard enthalpy change for the reaction 2C8H18(l)+17O2(g)> 16CO(g) + 18H2O(l) Given 2C8H18(l)+25O2(g)>16CO2(g)+18H2O(l) deltaH=-11020 kj/mol 2CO(g)+ O2(g)>2CO2(g) Delta H=-566.0 kj/mol The > is supposed to be an arrow :)

asked on November 17, 2011
59. chem

What would be the reaction between Mn2+ and NH3? is it Mn(NH3)? and would this solution react with HNO3, considering it would already have NO3 in it?

asked on November 1, 2010
60. biochemistry

Calculate the free energy of hydrolysis of ATP in a rat liver cell in which the ATP, ADP, AND Pi concentrations are 3.4, 1.3, and 4.8 nM, repectively. (ATP hydrolysis has delta G note= -30 kJ/mol)

asked on October 5, 2010
61. College Physics

A rope can withstand a maximum tension force of 500N before breaking. If we use the rope to pull a 24 kg bucket of water from a well, what is the maximum acceleration upward we can use without breaking the rope?

asked on February 6, 2015
62. ap statistics

In a survey, 600 mothers and fathers were asked about the importance of sports for boys and girls. Of the parents interviewed, 70% said the genders are equal and should have equal opportunities to participate in sports. B. Using the normal approximation

asked on April 24, 2014
63. Calculus - Volume by Integration

Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the y-axis: y=(x-2)^3-2, x=0, y=25 (a)solve by either the disk or washer method (b)solve by the shell method (c)state which method is easiest to

asked on November 24, 2013
64. chemistry

I fyou had only 12g of KOH remaining in a bottle, how many ml of 12.8%(w/v) solution could you prepare? (in mL) How many ml of 0.29 M solution could you prepare using 12 g of KOH?

asked on November 21, 2010
65. Chemistry

Listerine mouthwash has 21.6% ethyl alcohol by volume. What mass of ethanol is contained in 20.0 mL of mouthwash ?! ( the density of ethanol is 0.789 g/mL.) how would yu do this problem ?!?!

asked on July 24, 2010
66. Physics

A cannonball is fired with initial speed v0 at an angle 30° above the horizontal from a height of 42.9 m above the ground. The projectile strikes the ground with a speed of 1.2v0. Find v0.

asked on January 31, 2016
67. Algebra

The mean is 18.1 The z-score for 13.0 is - 1.7. What is the standard deviation for this data set.

asked on May 19, 2014
68. PHYSICS

An artillery shell is fired with an initial velocity of 300m/s at 55 degrees above horizontal. To clear an avalanche, it explodes on a mountainside 42.0s after firing. What are the x and y coordinates of the shell where it explodes, relative to its firing

asked on September 6, 2012
69. math

For her vacation Mrs. Andrews bought \$300 worth of traveler's checks in \$10 and \$20 denominations. If she has 22 travelers checks in all, how many of each denomination does she have? Let x represent the number of \$10 traveler's checks she has. Which

asked on August 20, 2012
70. Math

How do you write 2.78 in expanded form

asked on November 14, 2009
71. Language Arts

"Type a paragraph in which you use at least two linking commas, two semicolons, and one colon." Does the paragraph below match the criteria above? My dog, Bruno, is absolutely amazing; he's so many things for a one year old Miniature Pinscher: funny,

asked on November 16, 2015
72. math

Jeffrey's dogs ate 42 pounds of food during July. At that rate, how many days would a 100 pound bag of dog food would last? Round to the nearest whole day.

asked on August 4, 2013
73. math

Mr.Lewis drew a triangle measurement, x, .5x, and 1.5x. What is the best classification for this triangle? a. acute, scalene b. obtuse, scalene c. right, equilateral d. equiangular, equilateral e. obtuse. isosceles (i don't understand how to solve this

asked on December 27, 2012
74. Physics

The centers of a 14 kg lead ball and a 120 g lead ball are separated by 9.0cm .What gravitational force does each exert on the other?

asked on March 22, 2010
75. social studies

when listing a location of a place the degree of longitude is always listed???

asked on September 7, 2009
76. Geometry

Water was leaking from a faucet at a rate of 1.5 gal every 5 min. If it took 18 min to stop the leak, how much water was wasted?

asked on August 19, 2008
77. Chemistry

At its normal boiling point of 126°C n-octane, C8H18, has a vapor pressure of 760 torr. What is its vapor pressure at 25°C? the enthalpy of vaporization of n-octane is 39.07 kj/mol.

asked on December 11, 2015
78. Chemistry

3490 J of heat are added to a 20.4 g sample of iron at 20◦C. What is the final temperature of the iron? The specific heat of iron is 0.449 J/g · K. Answer in units of K.

asked on October 24, 2015
79. math

Cher has forgotten the combination to her locker. She knows it consists of four numbers -- 3, 5, 7, and 9 -- but she can't recall the order. She decides to try every possible order until she gets the right one. How many possible orders are there?

asked on January 13, 2011
80. Chemistry

Calculate the number of moles of carbon atoms present in 1.1 g of ethanol (C2H6O). Answer in units of mol.

asked on September 16, 2015
81. physics

turners treadmill runs with a velocity of 120 cm/s and speeds up at regular intervals during a half hour workout. After 25 seconds, the treadmill has velocity of 6.5 m/s. what is the avg acceleration of the treadmill during this period ?

asked on September 21, 2014
82. social studies

this tiny country located on 90 degres east meridian is squeezed between china and india

asked on September 7, 2009
83. math

Mrs. Jones is thinking of a number that when rounded to the nearest hundred is 400. what is the number? explain

asked on September 16, 2013
84. Chemistry

A reaction of magnesium with nickel (iii) chloride will produce magnesium chloride and nickel. Using 31.76g of magnesium would produce how many grams of nickel?

asked on October 21, 2012
85. English PLZ HELP

Which of the following are examples of coordinate headings? A. 3, b, iii B. A, i, a C. ii, 2, B D. A, B, C My answer was C but i got it wrong, im torn between A and B? PLEASE HELP CANT FIND IT IN MY TEXT BOOK

asked on May 22, 2015
86. Math

Two railroad tracks cross each other. If the measure of angle 1 is 3 times the measure of angle 2. What are the measures of angles 1,2,3, and 4? Explain and show your work please.

asked on November 12, 2013
87. Calc

A particle moves along the x-axis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3 - 3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is

asked on January 25, 2013
88. Physics

On a frozen pond, a person kicks a 10.0 kg sled, giving it an initial speed of 12.2 m/s. How far does the sled move if the coefficient of kinetic friction between the sled and the ice is .10?

asked on December 11, 2009
89. physics

a bus travels 280 km south along a straight path with an avg velocity of 88 km/h to the south. then it travels 210 km south with an avg velocity of 75 km/h to the south. a) how long does the 1st trip last? b) how long does the 2nd trip last? c) what is the

asked on September 21, 2014
90. physics

a 50 kg student who is late runs up two flights of stairs whose combined vertical height is 7.0 m in 10 s (and he then silently enters the classroom while the professor is writing on the chalkboard).Calculate the student's power output in doing work

asked on February 5, 2013
91. Physics

A transverse wave is formed on a long skipping rope. The equation of the transverse wave is y=5.50 sin(0.031π x+5.52π t) where x and y are in centimeters, t is in seconds, and Π is pi (3.14..). Find the amplitude of the wave? what is the wavelength of

asked on March 19, 2017
92. Chemistry

Iron ore consists mainly of iron III oxide. When iron III oxide is heated with an excess of coke(carbon), iron metal and carbon monoxide are produced. Assume that even if an excess of coke is not present that the reaction proceeds as described. A)write a

asked on October 15, 2006
93. Chemistry

Express the absolute value of the partial charges as a decimal fraction of the elementary charge for OH.

asked on February 14, 2017
94. Chemistry

if a photon of light has an energy of 2.35x10^-19 J, calculate the frequency and wave length. What solution do I use to get the answer?

asked on October 21, 2015
95. Chemistry

What is the mass of ethylene gycol dissolved in 5.00 kg of a 40.0% solution?

asked on May 4, 2013
96. chemistry

6.0mol of ammonia gas is injected into a 3.0 mol L container. at equilibrium 1.5 mol of hydrogen gas is found in the container. the number of moles of ammonia gas left in the container must be which of the following?

asked on May 5, 2012
97. grammar

4.The patient is a 42-year-old male with a history of left shoulder osteomyelitis with resistant pseudomonas from an injury he sustained approximately 20 years ago. pls help me with all the prepositions & conjuctions in the above sentence.

asked on June 15, 2011
98. Physics

A man doing push-ups pauses in the position shown in the figure . His mass = 68 kg. Determine the normal force exerted by the floor on each hand. Determine the normal force exerted by the floor on each foot.

asked on November 7, 2010
99. Chemistry

A 0.2512 stock sample of HCl is tirade to equivalence . If 16.77ml of 0.1410 M NaOH is required to reach the equivalence point, what volume of stock HCl was used for the tritation?

asked on September 15, 2016
100. math

Ruth's brother just went away to college this fall and had to buy his own laundry soap and fabric softener.The laundry soap was twice the cost of the fabric softener. the total of the two items was \$7.47. how much did the laundry soap and the fabric

asked on March 29, 2015