# Questions Asked onNovember 6, 2013

1. ## Math

True or False: A function's graph may include solutions that do not appear in its table of values.

2. ## MATH

Harriet needs to ship a small vase. The box she will use has a volume of 216 cubic inches. If the side lengths are all the same, what is the length of each side of the box? Hint: V= s^3.

3. ## Science

After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record? a. an earthquake or motion along a fault. b. new deposits of sediment must build up on the eroded area. c. folding of sedimentary

4. ## Science

1. The sporophyte generation produces spores that grow into a(n) (1 point) gametophyte. gymnosperm. angiosperm. pupa. 2. Placental mammals develop (1 point) in an egg laid in water. in a pouch on the mother’s body. inside the mother’s body. inside an

5. ## Science

After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record? a. an earthquake or motion along a fault. b. new deposits of sediment must build up on the eroded area. c. folding of sedimentary

6. ## stats

To estimate the mean score  of those who took the Medical College Admission Test on your campus, you will obtain the scores of an SRS of students. From published information you know that the scores are approximately Normal with standard deviation about

7. ## Chemistry

List the following compounds in order of increasing electrical conductivity: 0.1 M formic acid (HCOOH), 0.1 M (NH4)3PO4, 0.1 KCl, and 0.1 M glucose solution (C6H12O6). Why are they in that order?

8. ## General Chemistry I

At noon on a clear day, sunlight reaches the earth's surface at Madison, Wisconsin, with an average power of approximately 4.00 kJ·s–1·m–2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 6.60 cm2

9. ## Science

During which section of the geologic time period did the first modern humans evolve? a. during the Paleogene period of the Cenozoic era. b. during the Quaternary period of the Cenozoic period. c. during the Cretaceous period of the Mesozoic era. d. during

10. ## physics

Two children are sending signals along a cord of total mass 0.50 kg tied between tin cans with a tension of 35 N. It takes the vibrations in the string 0.50 s to go from one child to the other. How far apart are the children?

11. ## Science

Which of the following vertebrates had the chance to become abundant after the dinosaurs became extinct? a. wolly mammoths b. amphibians c. mammals d. reptiles C

12. ## Science

which of the following vertebrates had the chance to become abundant after the dinosaurs became extinct? a. wolly mammoths b. amphibians c. mammals d. reptiles C

13. ## chemistry

Solid sodium azide (NaN3) is used in air bags to fill them quickly upon impact. The solid NaN3 undergoes a decomposition reaction to produce Na(s) and N2(g). a. Provide the balanced equation for the decomposition of NaN3. b. What mass, in grams, of NaN3 is

14. ## Science

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

15. ## physics

A 15-cm-long tendon was found to stretch 3.7 mm by a force of 13.4 N. The tendon was approximately round with an average diameter of 8.5 mm. Calculate Young’s modulus of this tendon.

16. ## Science

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

17. ## physics

A fish tank has dimensions 36 cm wide by 1.0 m long by 0.60 m high. If the filter should process all the water in the tank once every 4.0 h, what should the flow speed be in the 3.0-cm-diameter input tube for the filter?

18. ## chemistry

Assuming reaction goes to completion, determine the final concentration of NH4Cl in the calorimeter. heat capacity =3.03J/g.c density =1.012 5g of NH4Cl used 100 mL of water used NH4Cl(s) + H2O(l) --> NH4Cl(aq)

19. ## Health (Ms. Sue)

1. List five questions you should ask you doctor id you are given a prescription for a medicine. A: You should ask your doctor of what amount is the correct dosage, how many times of the day you will need to partake of the medicine, what the side effects

20. ## Math

Information: Juan plans to build a bookcase t store his paperback books, DVDs, and CDs. he has lumber that he will use for the sides and back of the bookcase. Juan plans for his bookcase to have five shelves including, the top and bottom shelves. Each

21. ## English

Which of the following sentences contains an italicized word that's used as a predicate adjective? A. Jerry looks ill today.(ill is italicized) B. Jerry looks into the microscope.(into is italicized) C. Jerry looks disdainfully at the pile of

22. ## math

A store has 2 times as many hooded sweatshirts as crewneck sweatshirts. The total number of sweatshirts is 36. How many hooded sweatshirts does the store have?

23. ## calculus

A Ferris wheel with a radius of 13 m is rotating at a rate of one revolution every 2 minutes. How fast is a rider rising when the rider is 25 m above ground level?

24. ## ap chemistry

Under certain conditions, the reaction 3A + 2B -> 4C was observed to proceed at a rate of 0.00348 M· s−1. What was the corresponding rate of change in reactant A?

25. ## math

Hideki is collecting pennies . Each month in may, june, and july he put 200 pennies in a jug . He put 300 pennies in th jug in August and 300 in September. How many pennies did Hideki put in the jug between May and September ?

26. ## Algebra 8th

Find the greatest possible error for the given measurement if it is to the nearest 10 miles. 150 mi a. 5 mi b. 75 mi c. 0.5 mi d. 7.5 mi Find the greatest possible error for each measurement. 18.9 m a. 0.01 m b. 0.5 m c. 9.45 m d. 0.05 m Find the greatest

27. ## math

beth travels 244 miles everyweek. she says she will travel 2,196 miles if she travels the same number of miles for the next 9 weeks.

28. ## AP Chemistry

Equal masses of Ne and Ar are placed in a rigid, sealed container. If the total pressure in the container is 1.2 atm, what is the partial pressure of Ar?

29. ## Chemistry

Why is the solubility of butane 6.1 mg / 100 g water, yet hexane is immiscible in water?

30. ## kjkj

A gymnast of mass 56.0kg hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81m/s2 for the acceleration of gravity.Calculate the tension T in the rope if the

31. ## Quantitative Analysis

The "standard deviation of the sample score" divided by the "square root of the sample size" is the formula for computing the ...? A. Coefficiant of Determination B. Absolute Deviation C. Variance D. Standard Error

32. ## brief calc

Calculate the total area of the region described. Do not count area beneath the x-axis as negative. Bounded by the curve y = square root of x the x-axis, and the lines x = 0 and x = 16 This is under Integrals, i don't know what i'm doing wrong, please help

33. ## physics

Calculate the component of a force of 200N at a direction of 60degree to the force.

34. ## Eko

MegaMart collects a sales tax equal to 1/16 of the retail price of each purchase and sends this money to the state government. .Is the amount of tax collected proportional to the cost of an item after tax has been added?

35. ## Quantitative Analysis

All "Factorial ANOVAs" share the characteristic of...? A. Having one dependent variable B. Relying on post hoc procedures to reject the Null Hypothesis C. Having two or more independent variables D. Applying corrections for multiple comparisons

36. ## science

2. How do enzymes impact biochemical reactions in the body? A. Enzymes are catalysts to biochemical reactions. B. Enzymes lower the activation energy of biochemical reactions. C. Enzymes can speed up biochemical reactions. D. All of the above are correct.

37. ## English

After the bully struck him, Jules wanted to......... by throwing a rock, but he had.......s about doing anything so dangerous.

38. ## math for the office professional

one of your delivery trucks traveled 1,200 miles on 55 gallons of gas.yow many miles per gallon did the truck get?round off your answer to the nearest hundredth a.21.81 B.45.83C.45.84 D.21.82 my answer is d I know a is wrong

39. ## physics

Four long, parallel conductors carry equal currents of I = 9.50 A. The current direction of the current is into the page at points A and B and out of the page at C and D. Calculate the magnitude and direction of the magnetic field at point P, located at

In this section, we talked about combining a solar cell with a photoelectrode to form a photoelectrochemical device. Why do we add a solar cell in the system? a)Because the photoelectrode is not able to produce any voltage difference to drive the reaction

A spherical capacitor consists of a spherical conducting shell of radius b and charge -Q concentric with a smaller conducting sphere of radius a and charge +Q . Enter an expression for the capacitance of this device in terms of Coulomb's Constnat K_e (just

42. ## Physics

A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 9.5 g, the mass of the block is 10.5 kg, the

43. ## math

A hobby shop has 4 times as manymodel airplanes as model helicopters.The total number of model airplanesand helicopters is 35. How manymodel airplanes does the hobby shophave?

44. ## Physics (help)

A solid disk 1 with radius R1 is spinning freely about a frictionless horizontal axle l at an angular speed ω initially. The axle l is perpendicular to disk 1, and goes through the center S of disk 1. The circumference of disk 1 is pushed against the

45. ## Chemistry

How would I extract benzophenone from acetylsalicylic acid? thanks

46. ## Chemistry

Calculate the mass in grams of 0.000025 Avagadro's number of rhodium atoms (with the steps please)

47. ## physics

A house at the bottom of a hill is fed by a full tank of water 5.0 m deep and connected to the house by a pipe that is 110 m long at an angle of 58° from the horizontal (Fig. 13–48). (a) Determine the water gauge pressure at the house. (b) How high

48. ## Chemistry

How many grams of NaCl are present in a 300 grams salt solution containing 9% NaCl ?

49. ## Health (Ms. Sue)

Compare the term drug with the term medicine. A: The term drug and the term medicine both describe types of drugs. However, these types of drugs are very different. For example, the term drug is any substance that causes a change in a person’s physical

50. ## Statistics

A scientist in Smallville tested the cholesterol of a random sample of 35 town residents. He constructed the following confidence interval: t-interval for μ: with 99.00% Confidence: 188 < μ(Cholesterol) < 206 What is the margin of error? A) 18 B) 9 C)

51. ## spanish

how to write 530.000 in Spanish

52. ## math

Juan has measured the location of his bookcase and realized that he could only fit a bookcase with shelves that are 1 3/4 feet wide. what is the maximum number of shelves Juan could build for a new bookcase using 18 ft of lumber.

53. ## English

Can someone please check my answers? *Cross out any prepositional phrase. Underline the subject once and the verb/verb phrase twice. Write Adv. above adverbs. Put infinitives in parenthesis. Not doesn't need to be listed as an adverb. 1.Without hesitation,

54. ## Math

Triangle ABC has coordinates A(1,4); B(3, -2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis.

55. ## Medical transcription

I am to figure out the wrong words without hearing any audio. I don't think the "word" is correct in this sentence but I don't know what to replace it with either. PROCEDURE: Excision of 0.5 cm penile words and circumcision.

56. ## science

A positive test charge of 6.00 µC is placed in an electric field, which exerts a force of 5.00 x 10-4 N on the test charge. What is the magnitude of the electric field strength at the location of the test charge? (remember E = Fon q' / q', and 1 µC =

57. ## biology

an experiment, a scientist notices that an enzyme’s catalytic rate decreases when the pH of the environment is changed. Which of the following best summarizes the effect of pH on the enzyme? A. pH changes the shape of the enzyme. B. pH takes energy away

58. ## English

1. Reading this poem, I can picture the speaker, who has so much to say. 2. When I read this poem, I can picture the speaker,and he has so much to say. 3. While I read this poem, I can picture the speaker,and he has so much to say. (Does #1 mean #2 or #3?

59. ## Math

The cost of renting a car for one day is $32 plus$.08 per mile. How much would it cost to rent a car for one day if the number of miles driven is 250?

60. ## Health (Ms. Sue)

1. State the reason why some drugs are considered drugs of abuse. A: Some drugs are considered drugs of abuse because these drugs, which possess mind-altering effects that have no medical purposes, can lead to changes in structure and function of the brain

61. ## physics

) A cord has two sections with linear densities of and Fig. 15–34. An incident wave, given by where x is in meters and in seconds, travels along the lighter cord. (a) What is the wavelength on the lighter section of the cord? (b) What is the tension in

62. ## Algebra

1) Mio can build a large shed in 15 days less than Yuuko can. If they build it together, it would take them 18 days. How long would it take each of them working alone? M: Y: 2) A sink can be filled by a pipe in 6 minutes but it takes 12 minutes to drain a

63. ## chemistry

2 questions, I'm Having trouble figuring out how to calculate the moles of a solute in a solution based on the molarity and the volume. Here is what I'm working with. 1) "Use molarity of the stock solution of aspirin/Fe(No3)3(aq) (0.0044mol) and the total

64. ## math

Laundry- detergent $7.99 T Flower- bouquet$3.99 T, A grocery store receipt shows 5% state tax due on laundry detergent and a flower bouquet. Does it matter whether the tax is calculated on each separate item or the total cost? Explain.

65. ## Health (Ms. Sue)

1. Describe how drugs can change the way the brain works. A: Some drugs can change the way neurons within the brain communicate with each other. These drugs act like neurotransmitters, block neurotransmitters, or change the amount of a neurotransmitter in

66. ## physics

) A uniform ladder of mass m and length leans at an angle against a frictionless wall. If the coefficient of static friction between the ladder and the ground is determine a formula for the minimum angle at which the ladder will not slip.

67. ## Calculus - #2

Suppose g(x)={x^2+2x+1/x+1 if x

68. ## math

Three groups of students are sharing leftover pizza (all the same size originally). In which group does each student get the most pizza? Explain your choice. A. Six students equally share 3/4 of a pizza B. Three students equally share 1/3 of a pizza C.

69. ## Math

The first modern electronic computer, called ENIAC, was introduced in 1946. Personal home computers were not available until 28 years later. In what year were personal home computers introduced.

70. ## Social studies

Which of the following be explains why a species of lizards is able to live in the desert but not in a tundra regions?

71. ## Chemistry

The combustion of propane (C3H8) in your BBQ occurs by the following unbalanced reaction: C3H8(g) + O2(g)  CO2(g) + H2O(g) If 34.0 mL of CO2(g) is collected, what volume of H2O(g) also could be collected under the same conditions?

72. ## Calculus-Aproximate Areas

A ball is thrown upward at time t = 9 seconds on planet Ubuntu, and its acceleration from time t=9 seconds to t=21 seconds is given by the function . a(t) = (3) / (t - 8) m/s^2 Use 4 time intervals of equal length to overestimate, and then underestimate,

73. ## English

Charollets Web How did Wilbur respond to the lamb saying "Pigs mean less than nothing to me"

74. ## Calculus

Evaluate the surface integral. the double integral of (x^2 + y^2 + z^2)dS over Region S. S is the part of the cylinder that lies between the planes z = 0 and z = 5, together with its top and bottom disks Can anyone help?

75. ## Health (Ms. Sue)

1. List the important things to consider when choosing OTC medicine. A: The important matters to consider when choosing an OTC medicine are whether you want generic or a brand-name medicine, what type of OTC medicine will be most effective for you, and

76. ## physics

In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +4.4 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of +2.9 m/s. The

77. ## Calculus

Suppose that f(x)=ln(3+x^2). Use interval notation to state when f(x) is concave up and concave down. Then find all inflection points for f(x).

78. ## Chemistry #13

When a metal was exposed to light at a frequency of 4.26× 1015 s–1, electrons were emitted with a kinetic energy of 4.50× 10–19 J. What is the maximum number of electrons that could be ejected from this metal by a burst of light (at some other

79. ## Jr Applied Math (Algebra II)

A landscaping company placed two orders with a nursery. The first order was for 13 bushes and 4 trees, and totaled $487.00. The second was for 6 bushes and 2 trees, and totaled$232.00. The bills do not list the per-item price. What were the costs of one

80. ## Ratio

Complete to express each ratio in simplest form. How do I do 18 feet: 5yards =_____feet :______ feet= ______: _______

81. ## Quantitative Analysis

The circumstance where the Null Hypotheses is rejected when it is actually true is known as...? A. Type I Error B. Mundane realism C. Experimental incongruence D. Type II Error

82. ## science

1. In an experiment, a scientist notices that an enzyme’s catalytic rate decreases when the pH of the environment is changed. Which of the following best summarizes the effect of pH on the enzyme? A. pH changes the shape of the enzyme. B. pH takes energy

83. ## biology

Substance X is converted to substance Y in a chemical reaction. What role would a catalyst play in this scenario? A. It would increase the solubility of substance X into the solvent needed to speed up the reaction. B. It would speed up the reaction by

84. ## Health (Ms. Sue)

Describe three problems that can occur when taking a medicine. A: Three problems that can occur when taking a medicine are allergic reactions, such as itching, swelling, wheezing or difficulty in breathing, a pounding heart, or fainting and

85. ## math

colored beads are placed in the following order 1 red,1 green;then 2 red,2 green;then 3 red, 3 green; and so on In all,how many of the first 100 beads are red?

86. ## Math-Trigonometry

Show that if A, B, and C are the angles of an acute triangle, then tan A + tan B + tan C = tan A tan B tan C. I tried drawing perpendiculars and stuff but it doesn't seem to work? For me, the trig identities don't seem to plug in as well. Help is

87. ## Geometry

Find, to the nearest tenth of a centimeter, the length of a diagonal of a square if the measure of one side is 8.0 centimeters.

88. ## Calculus - #1

Suppose g(x)={1/x+1 if x

89. ## AP Chemistry

At 298K and 1 atm, a 0.5 mol sample of O2 and a separate 0.75 mol sample of CO2 gas have the same: A. mass B. density C. average molecular speed D. average molecular kinetic energy E. number of atoms Please explain, and thanks for helping!

90. ## Calculus - #3

Suppose g(x)={1/(x-2) if x

91. ## statistic

Let x be a random variable that represents the length of time it takes a student to complete a take-home exam in Dr. Larson’s psychology class. After interviewing many students, it was found that x has an approximately normal distribution with mean =5.2

92. ## anatomy

________ can reveal the race of an individual. a. hair b. eyes c. digestive organ d. clothing I think it is c or b

93. ## biology

Enzymes in the human body work in a very wide range of conditions. A. True B. False

94. ## math

Sam, Trish, and Shanti are making signs for the spring dance. Sam can make a sign in 3/4 of an hour, Trish can make a sign in 2/3 of an hour, and Shanti can make a sign in 3/5 of an hour. a. How many complete signs can each person make in 4 hours?

95. ## PHYSICS

A physical pendulum consists of a disc of radius R and mass m fixed at the end of a rod of mass m and length l . (a) Find the period of the pendulum for small angles of oscillation. Express your answer in terms of m, R, l and acceleration due to gravity g

96. ## chem111

If a balloon holds 2000L of Helium at sea level, at 1 atm and 25 degress Celsius, what will its volume be if it is allowed to rise to a height og 8 miles, where the pressure is 0.30 atm and the temperature is -70 degress Celsius.

97. ## Career (Ms.Sue)

I want to be a lawyer do I have to do a master degree? what qualifications do I need? what subjects a suitable for college?

98. ## science

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its

99. ## Health (Ms. Sue)

1. Differentiate drug tolerance from physical dependence. A: Drug tolerance is a condition in which a user need more of a drug to feel the same effect felt when first using the drug, whereas physical dependence is a states in which the body relies upon a

100. ## GEOMETRY

Here are the figures. file:///C:/Users/ALIZAJOY/Pictures/Untitled.png Open that link please please help me with my assignments 1. in the figure , the areas of traingle cef, triangle abe, triangle adf are 3,4, and 5 respectively. find the area of triangle

101. ## Calculus - #4

Suppose g(x)={1/(x-2) if x

102. ## calculus HELP!

A person stands on a bridge that is 100 feet above a river. If she drops a pebble how fast is it moving after 2 seconds? How long does it take the pebble to reach the river below? She has another pebble that she tosses up with initial speed of 8 feet per

103. ## history

how did George washington successfully lead a new nation? how did john adams successfully lead a new nation? thank you!

104. ## Chemistry

A sample of carbon dioxide has a volume of 22.0 L at 5.80 x 102 mm Hg. What pressure, in torr, would be needed to increase the volume to 48.6 L at constant temperature?

105. ## Calculus

Suppose that f(x)=3x^3+3x. Find all critical values of f. Then use interval notation to state when f(x) is increasing and when f(x) is decreasing and to state when f(x) is concave up and concave down. Find the local maxima and local minima. Find all

106. ## Spanish

A. mi B. mis C. tu, tus D. su E. nuestro, nuestra F. nuestros, nuestas G. sus 1. Our (plural) 2.(singular) his, her, your(formal),their 3. Our (singular) 4. My (singular) 5. My (plural) 6. (plural) his, her, your (formal), their 7. Your (familiar) A.

107. ## English

1. Walking on the street, I found a stray dog. 2. While I was walking on the street, I found a stray dog. 3. When I was walking on the street, I found a stray dog. 4. While I walked on the street, I found a stray dog. 5. When I walked on the street, I

108. ## English

1. He must have been rich. 2. I am sure he was rich. 3. I am sure that he was rich. 4. It is certain he was rich. 5. It is certain that he was rich. 6. Certainly he was rich. 7. Surely he was rich. (Are they all the same? Do we have to use 'that' or not?)

109. ## physics

a heat engine operates between 403 K and 1263 K at 67% of Carnot efficiency. How much work can it produce from 5900J of input heat?

110. ## chemistry

A solution of iron(III) thiocyanate was produced by dissolving 7.98 milligrams solid iron(III) thiocyanate in enough water to produce a 100.00 mL solution. What is the concentration, in molarity, of the solution?

111. ## emu

a bullet of mass ..21kg is fired from a gun of a mass 5.6kg. if gun is recoiled at a speed of 2.5 m/s .What speed must the bullet have as it leaves the gun

112. ## geometry ratio

5. find the ratio between the area of a square inscribed in a circle and an equilateral circumscribed about the same circle.

113. ## vocabulary

relevant: bearing upon or connected with the matter in hand; pertinent: A. connotative B. denotative

114. ## Statistics

When consumers apply for credit, their credit is rated using the FICO score. A bank manager used a random sample of the credit scores of 18 customers and determined the following 95% confidence interval: (613.6, 708.0) If the sample used 45 customers

115. ## basic rigging trade terms quiz

an eyeabolt is a piece of rigging hardware wiht a ------ which means it has a series of spiral grooves cut into it.

116. ## KUAI HELP!

4/75, 2r/25, r/125 -1/x, 2/xy, x/y 1/a, 1/b write fractions as equivalent fractions with the least common denominator

117. ## math calculus

A person stands on a bridge that is 100 feet above a river. If she drops a pebble how fast is it moving after 2 seconds? How long does it take the pebble to reach the river below? She has another pebble that she tosses up with initial speed of 8 feet per

118. ## biology

Sulfur has six electrons in its outer most energy level. In ionic bonding, it would tend to ­­­­­­­­­_____________________________. A. take on two more electrons B. give away two electrons C. give away six electrons D. not take on anymore

119. ## maths

Alan is using matchsticks to make isosceles triangles. Isosceles triangles have at least two sides the same length.How many different single isosceles triangles can he make with 45 matchsticks, using all the matchsticks each time? The answer is 11, but I

120. ## math

find general solution of y¡±-y¡¯=squre of sinx by variation parameter

121. ## chemistry

A sample of carbon dioxide has a volume of 22.0 L at 5.80 x 102 mm Hg. What pressure, in torr, would be needed to increase the volume to 48.6 L at constant temperature?

122. ## Internet

What does it mean when a question says, "Has the article been peer reviewed?"

123. ## physics

How much work does a student do if he throws a 0.750 kg ball with force of 45.0 N through a distance of 1.50 m?

124. ## Math - Trigonometry

Let f(x) be a polynomial such that f(cos theta) = cos(4 theta) for all \theta. Find f(x). (This is essentially the same as finding cos(4 theta) in terms of cos theta; we structure the problem this way so that you can answer as a polynomial. Be sure to

125. ## Chemistry

Calculate the number of moles in 50 kg of ammonium sulfate (NH4)2 SO4 (with the steps please)

126. ## science

on the windward side of the mountain, should the relative humidity of the parcel change as it rises from 3000 feet to 6000 feet? Why?

168. ## Psychology

Which of the following variables are independent and dependent? 1. Personality and Gender 2. Happiness 3. Scores

169. ## English

Is this sentence written properly? "Think about it," Link began, "Didn't you realize how much trash there was as the water came?"

CALCULTE

171. ## multivariable calculus

Studying for a test, and saw this: Find the center of mass of the hemisphere x^2 + y^2 + z^2 = a^2; z>=0 if it has constant density. Any ideas?

172. ## Accounting 2

Declared semiannual dividends of $1.20 on 75,000 shares of preferred stock and$0.08 on the 600,000 shares of \$20 par common stock to stockholders of record on March 31, payable on April 30.

173. ## Maths

what does: - and - make + and + make + and - make - and + make I get very confused with questions that have different signs

174. ## grammar

To complete her Week 3 Discussion Sharon isolated herself from her family, which finally made them realize she needed to concentrate.

175. ## geometry

the lateral area of two similar solids are 16pie cmsquared and 9pie cmsquared. The volume of the larger solid is 128pie cm cubed. find the volume of the smaller solid please explain

176. ## math

What's the opposite reciprocal of 1?

177. ## grammar

is this sentence correct..... To complete her Week 3 Discussion, Sharon isolated herself from her family, which finally made them realize she needed to concentrate.

178. ## Earth Space

If the temperature is rising, will condensation take place? (Or does it only take place when its cool?)

179. ## science help!!!

considering that lung transplants are almost always unsuccessful what might you suggest as a treatment for someone who is suffering from emphysema?

180. ## MATH

Find the y- intercept of the graph of each function. y=3x+3

181. ## math

what multiple does 27,8, and 6 all have in common

182. ## biology

Which of the following involve electronic charges? A. hydrogen bonds B. ionic bonds C. polar molecules D. all of the above

183. ## physics

2 The instrument used for experimental determination of the value of the universal gravitational constant G is called Galilio’s telescope ballistic pendulum Newton’s balance Cavendish

184. ## Math/Science

Explain how you could determine, give the following 3 pieces of information, (you need all 3 together not each one individually) the radius of the Earth. 1)Jakarta and Port Moresby, the capital of pau New Guinea, are two cities on the equator. 2) A plane

185. ## MATH2

what multiple does 27,8, and 6 all have in common

Okay I am really stuck on this question Tip: ^ = exponent Example: 6x10^7 7 is exponent Question: Venus is the second planet from the sun. Earth is the third planet from the sun. The distance from Venus to the sun is 6.72x10^7 and the distance from Earth

187. ## internet

What does, "How is the coverage on the subject?" mean?

188. ## algebra

what is the polynomial z2 (a+b)+ z3(a+b) distibuted. the number by the variable is an exponent

189. ## CHEM LAB

Calculate the Molar Enthalpy of Neutralization in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: *Make sure you report your answer using the correct sign* The temperature change equals 9.80 degrees

190. ## math

The temperature on one day in January for Phoenix, AZ, is 52 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -23 degrees Fahrenheit. What is the difference between these two temperatures?

191. ## Grd 12 Math

Can someone please help me work out how to get to the answer of: tanx + tan (pi-x) + cot (pi/2+x) = tan (2pi-x)

192. ## Science

I need some chemical properties for the element Arsenic

193. ## Social Science

Reading this article, Happiness is a thing called stable extraversion: a further examination of the relationship between the Oxford Happiness Inventory and Eysenck's dimensional model of personality and gender Determine what the independent and dependent

194. ## Science

I need some chemical properties for the element Arsenic

195. ## biology

if there is no oxygen for the glycolysis what process would that be called?

196. ## math

what is 6*7=42 as an array

197. ## Calculus - #5

If h(x) is equal to (x^2-4)/(x+2)when x ≠ –2, and h(x) is continuous for all real numbers, then what is the value of h(–2)? 0 –2 –4 2 This is impossible. There is an infinite discontinuity at x = –2.

198. ## math

Lisa and her father stand next to each other on a sunny day. Lisa is 130 centimeters tall and her father is 200 centimeters tall. Lisa's shadow is 100 centimeters. How long is lisa's father's shadow to the nearest centimeter?

199. ## math

Sum of following series 4.1+5.2+6.3+7.4+....52.49

200. ## Chemistry LAB 1

What is the Molar Enthalpy of Neutralization in kJ/mol if 5.00 moles of HCl(aq) (acid) neutralized 5.00 moles of NaOH(aq) (base) and released 6649J of heat? *Make sure you report your answer using the correct sign* DrBob222 gave me some help and I worked

201. ## Chemistry LAB 2

Calculate the Molar Enthalpy of Neutralization in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: *Make sure you report your answer using the correct sign* The temperature change equals 9.80 degrees

202. ## A Peculiar Question

Must I double-spaced when I am merely typing answers to questions found, or located, in my textbook? Also, must I replicate a particular format?

203. ## Math

Hat are the possible solutions for the following problem? |x + 3| < 5

204. ## science

The units for expressing electric field strength include:

205. ## science

What is the difference between gravitational force and the electric field?