# Questions Asked onJanuary 30, 2012

1. ## Physics

The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -7.00 10-9 C placed at corner A and then

2. ## physical chemistry

2. The retina of a human eye can detect light when radiant energy incident on it is at least 4.0X10-17 J. For light of 600-nm wavelength, how many photons does this correspond to?

3. ## Chemistry

What is the density of Li2S in grams per cubic centimeter, if the edge length of the unit cell is 5.88*10^2 pm?

4. ## consumer math

start with \$3,500 in cash and in owner's equity. You sell product purchased for \$750 for \$1,525.00 You purchase equipment for \$500. You pay the rent by check for \$450 You receive next month's power bill for \$155.00 Cash \$_____ Accounts Payable \$___

5. ## Science

Table 1: Temperature and volume data Trial Temperature (Celsius) Volume (mL) Starting Volume Room Temperature = Hot Water Trial 1 107 5.6ml Hot Water Trial 2 108.3 5.4ml Cold Water Trial 1 lo 4.4ml Cold Water Trial 2 lo 4.4ml PLOT AREA (Insert a graph that

6. ## physics

While in empty space, an astronaut throws a ball at a velocity of 15 m/s. What will the velocity of the ball be after it has traveled 2 meters?

7. ## alg 1

It takes a florist 3 hour and 15 minutes to make 3 small centerpieces and 3 large centerpieces. It takes 6 hours and 20 minutes to make 4 small centerpieces and 7 large centerpieces. How long does it take to make each small centerpiece and each large

8. ## Algebra

Six angles in a hexagon are fit together.It looks like this... _____ /\ / \ /_1\6/_5\ \ 2/3\4/ \/____/ I try to draw the picture as best as I can but try to imagine. It's a hexagon with the six angles labeled near the center of the hexagon. The options

9. ## chemistry

The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. A Be3+ ion with an electron in the n= 3.00 level emitted a photon with a frequency of 7.30 × 1015 Hz. What is the value of the level n for the new

10. ## Calculus

A pomegranate is thrown from ground level straight up into the air at time t=0 with velocity 128 feet per second. Its height in feet at t seconds is f(t)=16t^2+128t. Find the time its hits the ground and the time it reaches its highest point.

11. ## chem

The fact that ice is less dense than water is related to the fact that ____. the molecular structure of ice is much less orderly than that of water the molecules of ice are held to each other by covalent bonding ice has a molecular structure in which water

12. ## Physics

A force of 250 N is just sufficient to start a 50 kg steel trunk moving across a wooden floor. Find the coefficient of static friction.

13. ## Chemistry

Which is more soluble in water: propionic acid or sodium propionate?

14. ## Physics

A force of 1000 N is applied to a 1200 kg car. If the coefficient of friction is 0.04, what is the car's acceleration?

15. ## geography

Why do temperatures drop in the cold sector?

16. ## PHYSICS

A dolphin wants to swim directly back to its home bay, which is 0.85 km due west. It can swim at a speed of 4.35 m/s relative to the water, but a uniform water current flows with speed 2.82 m/s in the southeast direction. (a) What direction should the

17. ## chem: Drbob222

Hi I have a follow up to a question that was answered previously. New question: So when the HPO4(2-) reacts with the NaOH, will the equation be this?: HPO4^(2-) + NaOH --> H2O + NaPO4(2-) But how do I write the equation for the H2PO4^- and HCl? H2PO4^- +

18. ## physics

A Spring (k=790 N/m) has a length of 48 cm when zero net force is applied to it. What will its length be when 230 N of force is applied to stretch it?

asked by help-not sure how to do this
19. ## Physics

I am doing my physics homework and am stuck on this one problem. can anyone help me please? Two blocks are connected by a massless string and are held in position by another massless string along a frictionless incline (as shown in the figure). Let M1 =

20. ## Physics

A 200-kg cart is pushed slowly up an incline. How much work does the pushing force do in moving the cart up to a platform 1.5 m above the starting point if friction is negligible? (Use above problem) If the distance along the incline to the platform is 7 m

21. ## chemistry

the vapor pressure of ethanol at 20c is 44 mmHg and the vapor pressure of methanol at the same temperature is 94mmHg. A mixture of 30.0 g of methanol and 45.0 g of ethanol is prepared (and can be assumed to behave as an ideal solution). a.) calculate the

22. ## physics

Three charged particles are placed at the corners of an equilateral triangle of side d = 1.40 m (Fig. 16-53). The charges are Q1 = +4.0 µC, Q2 = -7.0 µC, and Q3 = -6.0 µC. Calculate the magnitude and direction of the net force on each due to the other

23. ## PHYSICS

A water pistol aimed horizontally projects a stream of water with an initial speed of 5.00 m/s. (a) How far does the water drop in moving 1.00 m hori- zontally? (b) How far does it travel before dropping a vertical distance of 1.00 cm?

24. ## Precalculus

Write 4log2+log6-log3 as a single logarithm. Explain with steps please!~~

25. ## Physics

A cheetah running at 30 m/s is pursuing a zebra going in a straight line at 14 m/s. If the zebra has a 35 m head start, how much time does it take for the zebra to catch up? (Please show all work. I know the answer, but I need the step by step instruction

26. ## college algebra

A model rocket is launches upward with an initial velocity of 160 feet per second. The height, in feet, of the rocket t seconds after the launch is given by h=-16t^2+160t. How many seconds after the launch will the rocket be 290 feet above the ground?

27. ## Chemistry

1)Which compound below would be expected to have the highest boiling point? a) CH3-CH2-CH2-CH2-CH2-CH2-CH3 b) CH3-CH2-CH2-CH2-CH-CH3 | CH3 c) CH3-CH-CH2-CH-CH3 | | CH3 CH3 d) CH3 | CH3-CH-C-CH3 | | CH3 CH3 Do I use molar mass to determine which is the

28. ## Physics

A force of 300 N is sufficient to keep a 100 kg crate moving at a constant speed across a wooden floor. What is the coefficient of sliding floor?

29. ## Physics

A tractor of mass 5.0*10^3kg is used to tow a car of mass 2.5*10^3kg.the tractor moved with a speed of 3.0m/s^1 just before the towing rope became taut.calculate:the speed of the tractor immediately the rope became taut, loose kinetic energy of the system

30. ## Chemistry

How many kilograms of water at 15oC can be heated to 95oC by burning 143 grams of methane, CH4, assuming that 100% of the heat is used to heat the water. The heat of combustion of methane is 891 kJ per mole of methane. (The specific heat of water is 4.184

31. ## Solid mensuration

Find an equation of the circle tangent to x + y = 3 at (2,1) and with center on 3x - 2y - 6 = 0

32. ## Physics

A 200-kg cart is pushed slowly up an incline. How much work does the pushing force do in moving the cart up to a platform 1.5 m above the starting point if friction is negligible?

33. ## materials science

Consider a copper lattice with an excessive average of one vacancy in every 100 unit cells. What will be its density? Compare this to the theoretical density of copper.

34. ## math

Find C if AB x C = AAA

35. ## math

A simple economy consists of two industries: agriculture and manifacturing. The production of 1 unit of agricultural products requires the consumption of 0.4 units of agricultural products and 0.15 units of manufactured goods. The production of 1 unit of

1. Americans are often accused of being ethnocentric. This means that A. Americans welcome diversity in their work force. B. Americans feel their culture is superior to other cultures. C. U.S. firms are actively seeking international markets. D. U.S.

37. ## Chemistry

Determine the maximum number of electrons that can have each of the following designations: 6f: 4d: 2f: 5d(yz): 3d:

Pete's Warehouse has a market value of \$5,000,000. The property in Pete's area is assessed at 40% of the market value. The tax rate of \$105.10 per \$1000 of assessed value. What is Pete's property tax?

39. ## Physics

A 100 lb crate is being pushed across a wooden floor with a force of 40 lb. If mu=0.3, find the acceleration of the crate.

40. ## Chemistry

How many grams of NaCl should be added to 1 L of water to make an isotonic solution? (molecular weight of NaCl= 58.5) Can someone please explain to me why the answer is 9 grams.

41. ## ohysical science

A weightlifter raises a 200-kg barbell through a height of 2 m in 2.2 s. The average power he develops during the lift is

42. ## math

the chef at a restaurant bought 37 pounds of salad for \$46.25. how much did she pay for 1 pound of salad

43. ## chemistry

how much energy is released when a 5600-g sample of water cools from 99 degrees C to 28 degrees C?

44. ## Physics

A car whose brakes are locked skids to a stop in 200 ft from an initial velocity of 50 mi/hr. Find the coefficient of sliding friction.

45. ## physics

A pitcher claims he can throw a 0.146 kg baseball with as much momentum as a 3.37 g bullet moving with a speed of 15238 m/s. What must be its speed if the pitcher’s claim is valid? Answer in units of m/s What is the kinetic energy of the bullet? Answer

46. ## Science

Is a medical diagnosis considered a theory or a hypothesis?

47. ## Alg 1

You have 60 megabytes of space left on your portaable media player. You can choose to download song files that use 3.5 megabytes or video files that use 8 megabytes. You want to download at least 12 files. What is a graph showing the numbers of songs and

48. ## biochemistry

If you make up a solution of 100 mL of 0.1 M HEPES in the basic form, what will be the pH? I have no idea where to even start...

49. ## math

Tickets to a show cost\$10 in advance and \$15 at the door. If 120 Tickets were sold for a total of \$1390, how many of the tickets were bought in advance?

50. ## AP Chem. 3

A 1.80 g sample of a large boimolecule was dissolved in 21.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling point constant is

51. ## chemistry

Chloroquine is used to treat malaria. Studies have shown that an effective dose for children is 3.5 mg per kilogram (3.5 mg/kg) of body weight, every 6 hours. If a child weighs 21 kg, how many milligrams of this drug should be given in a 66 hour period?

52. ## Math Help

The length of an object in feet is equal to 3 times its length in yards. The length of a waterslide is 48 feet. Write and solve a multiplication equation to find the length of the waterslide in yards.

53. ## Calculus

Consider the curve -8x^2+5xy+y^3=-149 1. Find Dy/dx 2. write an equation for the line tangent to the curve at the point (4,-1)

54. ## physics

This is an ”explosion” question. A 30-06 caliber hunting riﬂe ﬁres a bullet of mass 0.0164 kg with a velocity of 254 m/s to the right. The riﬂe has a mass of 3.62 kg. What is the recoil speed of the riﬂe as the bullet leaves the riﬂe? Answer

55. ## Stats

Suppose that your score on an exam has a positive z-score in comparison to your classmates. A. Is it possible that your score is below the mean score?

56. ## Math

A jewelry store is selling a set of 4 pairs of gemstone earrings for \$58, including tax. Neva and three of her friends bought the set so each could have one pair of earrings. Write and solve a multiplication equation to fin how much each person should pay.

57. ## College Hca 210

Write a 350- to 700-word paper on one of the following laws: HIPAA (1996) or EMTALA (1986). Pretend you are a health care manager employed at a small community hospital responsible for educating your staff about HIPAA (1996) or EMTALA (1986). Include the

58. ## Computers

Assume you have a computer that contains 1 GB of memory. It contains four memory slots. Each slot can contain 128 MB, 256 MB, 512MB, 1 GB, or 2GB memory modules. Two of the slots contain 512 MB memory modules. What memory chips would you buy to increase

59. ## geometry

Gail and her 3 friends all share half a pie. All the pieces in thwe pie put together make up 180 degrees. Gail and her friends finish the pie and they each eat an equal piece. They believe each piece has an angle equal to 25 degrees. are their calculations

60. ## Trigonometry

Add and subtract as indicated. Then simplify your answer if possible. Leave answer in terms of sin(θ) and/or cos(θ). (Remember to enter trigonometric powers such as sin2(x) as (sin(x))2.) 1/sin-sin=

61. ## physics

Two carts with masses of 11.7 kg and 2.5 kg move in opposite directions on a frictionless horizontal track with speeds of 6.6 m/s and 3.1 m/s, respectively. The carts stick together after colliding head-on. Find their ﬁnal speed. Answer in units of m/s

In general, a person who owns and operates his or her own business can be thought of as a/an A. entrepreneur. C. gambler. B. manager. D. pioneer. my answer is A Consider two used-car dealers: Bob’s Better Wheels and Dewey, Cheatum, and Howe Motors. Their

63. ## physics

A plane leaves Seattle, flies 77.0 mi at 22.0 degrees north of east, and then changes direction to 50.0 degrees south of east. After flying at 119 mi in this new direction, the pilot must make an emergency landing on a field. The Seattle Airport facility

64. ## physics

A(n) 3.91 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest. The composite system moves with a speed equal to one-third the original speed of the 3.91 kg sphere. What is the mass of the second sphere? Answer in

65. ## Physics

Can a vector have a component equal to zero and still have a nonzero magnitude? Explain.

66. ## english

teacher read story called The Secret Life of Walter Mitty and it be here 142.23.40.13/big/english/stories/WalterMitty . p d f all questions i have to do. i write my answers here and if you please help me edit correct them. i not sure if teacher say to

67. ## physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of

68. ## physics

The linear impulse delivered by the hit of a boxer is 229 N · s during the 0.504 s of contact. What is the magnitude of the average force exerted on the glove by the other boxer? Answer in units of N

69. ## statistics

If the score on a test has a mean of 52 and a standard deviation of 5, what is the z-score for a score of 58

70. ## physics

A space traveler weighs 620 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?

71. ## math

A Ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the Ferris wheel be at the origin. The height h (in feet) of a Ferris wheel car located at the point (x, y) is given by h = 50 + y where y

72. ## Pre-Algebra

Help! I am not really good with story problems! Forest rangers measure a depth of 82" of snow on a mountain peak at 8am. Snow is expected to fall at a steady rate of 3/4" per hour throughout the day. A) write an equation that approximates the depth of 'y'

73. ## computers

Assume you have a computer that contains 2GB of memory. It contains four memory slots. Each slot can contain 128 MB, 256 MB, 512MB, 1 GB, or 2GB memory modules. Currently, each slot contains a 512MB memory module. What combinations of memory modules will

74. ## Chemistry

Which is more soluble in water: HCl or ethyl chloride?

75. ## physics

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of

76. ## Chemistry

A Be3+ ion absorbs a photon with a frequency of 7.31 × 1015 Hz. If the energy of the final state of the Be3+ ion was -3.88 × 10(-18) J, calculate the energy of the initial state. Express answer in scientific notation. My work so far: delta E = (h)(v)

77. ## PHYSICS

A ball is thrown from a point 1.1 m above the ground. The initial velocity is 20.3 m/s at an angle of 32.0° above the horizontal. (a) Find the maximum height of the ball above the ground??? (b) Calculate the speed of the ball at the highest point in the

78. ## math

A park has 18 swings. 3/9 of them are tire swings. how many of the swings are tire swings?

79. ## Math

1. A chocolate bar is made up of 12 equal pieces.Tom ate 3/4 of a chocolate bar. Sarah ate 2/3 of the same kind of chocolate bar. Tom said he ate more chocolate than Sarah. Is he correct?

80. ## Dynamics

A quarterback throws a football with a velocity vo at an angle of 45o with the horizontal. At the same instant a receiver standing 20 ft in front starts running down the field at 15 ft/s and catches the ball. What is the distance of the receiver from the

81. ## college algebra

on a ship, the distance d that you can see to the horizon is given by d=1.5 square root h, where h is the height of your eye measured in feet above sea level and d is measured in miles. How high is the eye level of a navigator who can see 16 miles to the

83. ## Physics

Three point charges, -6.35 10-9 C, -8.20 10-9 C, and +7.75 10-9 C, are fixed at different positions on a circle. The total electric potential at the center of the circle is -2210 V. What is the radius of the circle?

84. ## MATH (REFINANCE MORTGAGE)

A person purchased a 225463 home 10 years ago by paying 10% down and sighning a 30 year mortgage at 8.7% compounded monthly. Interest rates have dropped and the owner wants to refinance the unpaid balance by signing a new 20 year mortgage at 4.2%

85. ## physics

You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that slopes upward at a 12° angle with the horizontal. As you face the window (0.86 m high, 2.0 m wide) in your compartment, the

86. ## government

The judiciary's status as an independent branch of national government depends on judicial review, which grants the judiciary the authority to

87. ## Math

5(-3x - 2) - (x - 3) = -4(4x + 5) + 13 Answer Multiply factors. -15x - 10 - x + 3 = -16x - 20 +13 Group like terms. -16x - 7 = -16x - 7 Add 16x + 7 to both sides and write the equation as follows 0 = 0

88. ## ELA

Find the prepositional phrase in each sentence 1. There was a town that did without television. Answer:without television 2. Most people in town stopped watching TV. Answer:in the town 3. They did not watch television for a whole week. Answer:for a whole

89. ## math

Simplify the expression √x2 - 25 as much as possible after substituting 5csc(θ) for x.

90. ## Alg 1

The owner of a hair salon charges \$20 more per haircut than the assistant. Yesterday the assistant gave 12 haircuts. The owner gave 6 haircuts. The total earnings from the haircuts were \$750. How much does the owner charge for a haircut? Solve by writing

91. ## algebra

could you please help me? john needs to earn \$693 to pay for trip. he finds job that pays \$7 per hour and he mows lawns for \$9. an hour a. write an inequality describing his goal in terms of hours at his job, x, and hours mowing lawns, y . i wrote 7x + 9y

92. ## physics

A particle leaves its initial position x0 at time t=0 moving in the positive x direction with speed v0 but undergoing acceleration of magnitude (a) in the negative x direction. Find expressions for a) the time when it returns to the position x0 and b) its

93. ## Science

Which distance is the greatest ? A. The distance across the Milky Way Galaxy. B. The distance to the nearest star Cluster. C. The distance across the solar system. D. The distance to the nearest Galaxy.

94. ## physics

a pendulum with a length of .600 m has a period of 1.55 s. what is acceleration due to gravity at the pendulums location

asked by how to do this?
95. ## physics

I am trying to study for my exam i have tomorrow and this type of problem keeps giving me trouble can someone please help me:: A 3.24 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.8N at an angle

1. In a _______, consumers ultimately decide what should be produced. A. macroeconomic system C. free market system B. socialist economy D. command economy 2. Efficiency can best be defined as A. the amount of output generated in a given amount of time. B.

97. ## algebra II

A moving company charges a flat rate of \$85 plus and additional \$.17 per mile driven. How far must the company drive to earn @ least \$100? Round to the nearest mile.

98. ## physics

Before starting this problem, review Conceptual Example 7. The force vector A has a magnitude of 70.0 newtons (N) and points due east. The force vector B has a magnitude of 111 N and points 71.4 ° north of east. Find the (a) magnitude and (b) direction of

99. ## wchs

A checkerboard measures 144 square inches. What is the length of a small square on its side? Hint: It has 8 squares per edge.

100. ## physics

Suppose you cut a small gap in a metal ring (Figure A). If you heat the ring, will the gap become wider o r narrower

101. ## arithmetic

Tell whether the sequence is arithmetic. If the sequence is arithmetic, write a function rule to represent it. 12, –9, 6, –3, ...

102. ## Finance

Use your knowledge of balance sheets and common-size statements to fill in the missing dollar amounts: ASSETS Cash \$25,000 3.4% Accounts receivable \$125,000 _____ Inventory _______ 27.1% Total current assets \$350,000 ______ Gross plant and equipment

103. ## government

Compared to Supreme Court nominations, those for the lower federal courts

104. ## chemistry

What is the volume of stock solution of 51 g/L AgNO3 required to make a 50 mL solution of 0.03 M final concentration?

105. ## English

put an (*) next to the answer I chose. Not asking anyone to do my work for me; just want a double check. I'm a little unsure since I picked the same term for each answer :) Read the following sentence from "In Another Country" and choose the word below

106. ## physics

Two carts with masses of 4.3 kg and 3.0 kg move toward each other on a frictionless track with speeds of 5.7 m/s and 4.4 m/s, respectively. The carts stick together after colliding head-on. Find their ﬁnal speed. Answer in units of m/s

107. ## Algebra 2

A bag contains 5 red, 9 white, and 10 blue marbles. Suppose you choose a marble from the bag and then choose another marble without replacing the first one. Find the probability of picking the same color both times.

108. ## physics

A 2.8 kg gold bar at 99 degrees celcius is dropped into 0.21 kg of water at 23 degrees celcius What is the ﬁnal temperature? Assume the speciﬁc heat of gold is 129 J/kg times degrees celcius. Answer in units of degrees celcius

109. ## College Physics

A 1.00 g lead bullet at 28.0°C is fired at a speed of 230 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts? Can someone walk me through this step by step?

110. ## Marketing

Marketing Mix (Price, Product, Promotion, Place) How does Colgate toothpaste use the marketing mix?

111. ## math

Write the following in terms of sin(θ) and cos(θ); then simplify if possible. sec(θ) / tan(θ) =

112. ## Chemistry

Perform the following calculations to the correct number of significant figures. (89.6-23.981)/0.0047

113. ## ELA

Read the social studies article about the gold rush below. Then list the prepositional phrases on the lines. Underline the object of the preposition in each phrase In 1849, gold was discovered at Sutter's Mill in California. Thousands of settlers headed

114. ## math

How many counting numbers between 100 and 1000 have at least one 2 as a digit?

115. ## programming

Write pseudocode (using pascal) to accept as input names of an unspecified number of equipment rented, the name of the company, the number of days the equipment was rented for and the sales amount. The algorithm must determine the number of times each type

116. ## accounting

3. On December 1, year 1, Newton Corporation incurs a 15-year \$300,000 mortgage liability in conjunction with the acquisition of an office building. This mortgage is payable in monthly installments of \$3,600, which include interest computed at the rate of

117. ## HCA331

Given all of the information that you have learned about health care education, this assignment challenges you to convey that information to other health care professionals so that they may serve as educators as well. Your challenge is to design a guide

118. ## accounting

Quayle Corporation reports net income of \$380,000 and weight-in average of 200,000 outstanding fro the year. Complete the earnings per share of Common Stock.

119. ## Physics

After rubbing a balloon against someone's hair, a balloon has accumulated a static electric charge. The air inside the balloon has the same density as the air outside of the balloon, and the balloon itself weighs 1.41mN. How many free electrons are there

120. ## programming

Write pseudocode to accept as input names of an unspecified number of equipment rented, the name of the company, the number of days the equipment was rented for and the sales amount. The algorithm must determine the number of times each type of equipment

121. ## English

What is your personal opinion about these scientific objectives to be added to my project on biodiversity in water? Thank you 1)Demonstrate an understanding of: a. biodiversity in different aquatic environments and its sustainable development b. scientific

122. ## language

what are 5 verb phases using a main verb and helping verb

123. ## MATH USM

Write the following in terms of sin(θ) and cos(θ); then simplify if possible. cos(θ) + sin(θ)cot(θ) =

124. ## Trig

Write the following in terms of sin(θ) and cos(θ); then simplify if possible. csc(θ) - cot(θ)cos(θ) =

125. ## english

When an actor alone on the stage delivers a speech, the speech is called a : A) monologue B) dialogue C) soliloquy D) dialect ....my answer is (a) please help me

126. ## Analytical Chemistry

What is the balanced equation for oxidation of iodide ion by oxygen (O2) that occurs which produces iodine.

127. ## physics: Torque

1. A plank of negligible weight 3.5 m long rests with one end on a rock and the other end on a scale. A woman is standing on the plank 1.0 m from the rock making the scale read 120 N. How much does the woman weigh?

128. ## PHYSICS

A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s vertical m from ground??? f the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0.)???? If the

129. ## Chemistry

A light photon with a frequency of at least 0.0373 × 1016 Hz is required to split apart diiodine according to the equation: I2(g) → 2I(g) Calculate the energy (kJ) required to break apart a mole of diiodine. Express answer in scientific notation. I got

130. ## chem lab

KMn04 with iron(II) ammonium sulphate hexahydrate-redox titration. 1-what is the purpose of adding H2SO4 to iron sample before the titration? 2-why is there no indicator used to determine the end point for this titration? 3-suggest another possible

131. ## REFINANCE MATH PROBLEM

I screwed up the first post with this question so re posting to find some help. A person purchased a 225463 home 10 years ago by paying 10% down and sighning a 30 year mortgage at 8.7% compounded monthly. Interest rates have dropped and the owner wants to

132. ## Math

Verify if this is the correct form please. Given the parent function f(x)=log[10]x, state the equation of the function that results from a vertical stretch by a factor of 2/5, a horizontal stretch by a factor of 3/4, a reflection in the y-axis, a

133. ## FACS - Pen Pal Letter/Picture ID Card Project

What does a 5" x 8" index card look like?

134. ## Functional Dependencies

List all the functional dependencies found in the spreadsheet. List all the multi-valued dependencies found in the spreadsheet. Assumptions •No two makers produce a car with the same model •The color does not play a part in the MSRP •No two models

135. ## Chemistry

1) Three factors control the rate of evaporation of a liquid: surface area, temperature, and strengths of intermolecular forces. More than one of the statements given described a correct effect. The statements are (1) the larger the surface area, the

136. ## Math

When you multiply a whole number by 10, what is always true about the ones place in the product? Answer: It is always zero.. is this correct

137. ## CHEM.

How does the surface tension of water compare with the surface tensions of most other liquids? a.)It is lower. b.)It is about the same. c.)It is higher. d.)It is higher when a surfactant is added. i think its C or D.

138. ## math

3n+6 If n represents the position of a number in the pattern, which of the following is the pattern of numbers decribed by the expression? f. 1,9,12,15,18 g.6,12,22,36,54 h. 9,12,15,18,21 j. 3,9,12,15,21

139. ## Science

Examples of seed dispersal Animals carry seeds away carried by the wind animal waste carried by water stuck to fur/clothes Any others?

In global trade, when the difference between money coming into a country from exports and money leaving a country due to imports or money flows from other factors is known as the A. balance of payments. C. balance of trade. B. trade offset. D. trade

141. ## physics

Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction

here is all my questions with answers.. just to double check my work.. Sue can u please check!! thanks u for all the help!! 1. In a _______, consumers ultimately decide what should be produced. A. macroeconomic system C. free market system B. socialist

143. ## chemistry

Calculate the concentration of nitrate ions, NO3- , in mol dm-3, of a solution made by dissolving 2.5000 g of ferric nitrate nonahydrate in water to give 2.000 L of solution.

144. ## chemistry

how do i know if the buffering capacity of a buffer solution is lost? Is that when after I add more of an acid or base to the solution that the pH eventually goes past + or - 1 of the original solution?

145. ## math

From an exteror point P that is h units form a circle of radius r, a tangent line is drawn to the circle. Let d denote the distance from the point P to the point of tangency T. Express d as a function of h.(HINT: if C is the center of the circle, the PT is

146. ## physics

i walked from four miles in the direction of 30 celisus south of east, then from there i walked 3 miles to west. from there i walked 5 miles directly toward north. hw far away am i from home?' A: USE PARALLEO=LOGRAM GRAPHING METHOD. B: USE CALCULATION

When the government of Indonesia imposes a tax on imported electronics products to help its young electronics industry compete in the global marketplace, it’s imposing a/an _______ on foreign electronics products. A. import quota C. embargo B. protective

148. ## Math-Decimals

Please match each number with its best example. Some values will need to be changed into a decimal format. A. Recurring Decimal B. Mixed Number C. Non-repeating Decimal D. Finite Decimal E. Decimal Examples: ½ 5½ π 0.375 ⅓ I think 5½ is B and ⅓ is

149. ## physics

A bomb is dropped from a height of 40m.simultaneously and vertically below it,a second bomb is fired vertically with a velocity of 20m/s.At what distance from the ground do they collide

150. ## English

Can you please check my sentences together with a few more points I need to include in my project work? 1) I really hope you had a good journey back home. All our teachers have been enthusiastic about your visit and your principal's words about the

5. The trend toward two-family income has led to A. policies allowing only one family member to work for a company. B. flexible work schedules, pregnancy benefits, and elder-care programs. C. businesses paying lower wages and hiring fewer workers. D. fewer

152. ## physics

You have three identical charged spheres, each with a charge of 2.80 µC. You have arranged them so they are each at the corners of a square that measures 4m on a side. Find the magnitude of the electric field at the "empty" corner. (The corner with no

153. ## math

Write the following in terms of sin(θ) and cos(θ); then simplify if possible. sec(θ) / tan(θ) =

155. ## physics

A child drops a coin from the window of a house.it strikes the ground 0,8s later.what is the magnitude and direction of the coin's acceleration? Describe how the velocity of the coin changes as it falls.

156. ## physics

a force of 5 N is required to slide a block at constant speed over the dry surface of a table. The block has a mass of 2.5 kg. The coefficient of friction is..

157. ## Chemistry

which is more soluble in water: cyclohexane or glucose?

158. ## physics

A stone is thrown vertically upwards with a speed of 24m/s,two seconds later a second stone is dropped from the same point.Find where the two stones meet

159. ## set

of 250 candidates writing a exam, 147 passed in math,150 pass in chemistry and 85 pass subjects B)calculate the number of students who pass i)pass math only ii)pass chemistry only iii)passed neither iv)pass only one subject

160. ## math

The CEO of a transportation company wants to use a large amount of cash for the purchase of additional new trucks and trailers rather than paying bonuses to its employees. The new trucks are more productive than the existing trucks or used trucks. The used

161. ## Math

Im stuck plz help If a salesperson earns an annual salary of \$ 45,000 plus a 5.5 % commission on his sales,then the equation y = _______________ will express his annual earnings in relation tohis sales x. (a) \$45,000+0.055x (b)\$45,000 −0.055x (c) 0.055x

162. ## PHYSICS

Sheena can row a boat at 2.91 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.54 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is

163. ## physics

Cora is a passenger in a car traveling east along a country highway that is parallel to a railroad track and clear of any traffic. Her friend Liz is driving. They come up behind the last car of a train on the track. Initially, the train is moving a little

164. ## math

how would you test to see whether 7 is a factor of 291?

165. ## Math

Brice found the volume of a box by filling the box with 1-inch blocks. Which unit of measure did Brice use to find the volume? A. Inch B. Square Inch C. Cubic Inch D. Centimeter C?

166. ## physics

What is the force of gravity between two 832 kg cars separated by a distance of 29.35 m on an interstate highway?

167. ## geography

Why do mid-latitude depression move from west to east?

168. ## Chemistry - Naming Compounds

Name the following compound. Ba3Pb2 I don't really understand since both the elements are metals and usually these bonds occur with a metal and nonmetal or two nonmetals.

169. ## chemistry

the molecular weight of MgCl2 is 95.21. how much MgCl2 would you need to make up 50 mL of a 1x10^-3 molar solution?

170. ## Precalculus-Verify

log(base2)x-log(base2)6= log(base2)5+ 2log(base2)3 log(x/6)=3log15 (x/6)=15^3 6*(x/6)=15^3*6 x=15^3*6 =20,250 Answer is 270.... What did I do wrong...

171. ## physics

You have three identical charged spheres, each with a charge of 2.80 µC. You have arranged them so they are each at the corners of a square that measures 4m on a side. Find the magnitude of the electric field at the "empty" corner. (The corner with no

172. ## physics

A +5 microcoulomb charge experiences a .55 N force in the positive y direction. If this charge is replaced with a -2.7 microcoulomb charge, find the magnitude of the force in this case.

173. ## physics

If two cars are moving head on toward each other at 88 km/h(55mi/h, and their drivers apply their brakes when they are 85 m apart, will they collide? This is a yes or no answer and explain why

174. ## Chemistry

Calculate to four significant figures, the energy of a photon emitted when an electron falls from n=5 to n=4

175. ## Finance

I am working on an assignment in which I need to put together a pro forma balance sheet. At the end of the assignment, I need to find the predicted values of accounts for the upcoming year. In 2011, Notes Payable was 11.28 million; Long Term Bonds were 7

176. ## Math

If 72% of Americans have straight hair, 76% have brown eyes, 87% are high school graduates, and 88% are less than 6 feet tall, what is the minimum percentage of Americans who have all four attributes?

177. ## english

2. Walter Mitty steps into fantasy while he drives his car and begins imagining he be pilot. As he ride past hospital he think he be doctor saving man's life. On street he hears newsboy shouting about trial, he begin think he be on trial for murder. After

178. ## chemistry

if you had 120 grams of sugar and all of it decomposed,how many moles of water were decomposed?

179. ## physics

a force of400.0 is exerted on a 1250 N car while moving it a distance of3.0 m. how much work was done on the car

180. ## sets

in a school, 37% of the pupils study principle of accounts and 28% study principal of business. if 15% study both business subjects what percentage of the pupils do not study neither, study P.O.B only and study P.O.A only

181. ## physics

A 0.58 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.017 s. What is the force exerted on the receiver? Answer in units of N

182. ## Math

Please match each number with its best example. Some values will need to be changed into a decimal format. A. Recurring Decimal B. Mixed Number C. Non-repeating Decimal D. Finite Decimal E. Decimal Examples: ½ 5½ π 0.375 ⅓ I think 5½ is B and ⅓ is

183. ## Chemistry

What is the empirical formula if given c-.1929 h-.01079 o-.08566 cl-.1898

184. ## statistics

A population is normally distributed with a man of 100 and a standard deviation of 15. is it unusual for themean of a sample of 3 to be 115 or more? Why or why not?

185. ## Algebra

A grandmother is looking for a plan to finance her new grandchild’s college education. She has \$25,000 to invest. Search the internet and locate a long-range investment plan, CD, Savings Bond, etc, for the grandmother. The plan is to earn compound

186. ## physics

Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction

187. ## Finance

Lever Brothers has a debt ratio (debt to assets) of 40%. Management is wondering if its current capital structure is too conservative. Lever Brothers’ present EBIT is \$3 million, and profits available to common shareholders are \$1,560,000, with 342,857

188. ## algebra

Suppose that a quadratic equation had two x-intercepts. How could you use the intercepts to find the vertex?

189. ## physics

what net force is needed to accelerate a 2.0kg mass from rest to a velocity of 10m/s in 5.0s

190. ## Algebra

I have 100 feet to surround three sides of a rectangle. What is the largest area that I can enclose?

191. ## English

Can you please have a look at these few sentences? I urgently need to know if they are right. 1)It would be nice if my students from the ninth class could start emailing to your students to practice their English. 2) They already keep a diary about their

192. ## Precalculus

1.Solve 5^(2x) -4(5^x)=12 2. Solve Log[8](log[8]x)=0

193. ## Vector Calculus

2. Use the properties of the dot product to show that (⃗b·⃗c)a−(⃗a·⃗c)⃗b is perpendicular to ⃗c. Must be shown for arbitrary vectors. Im sorry, I'm really stuck on this. I know that is a vector is perpendicular to another their dot product

194. ## history

Discuss the importance of landscape in crafting battle strategy for both the French and the English. HELP PLEASE!

The property of Al's garage is worth \$300,000. Al has a fire insurance policy of \$180,000 that contains an 80% coinsurance clause. What will the insurance company pay on a fire that causes \$210,000 damage? If Al met the coinsurance requirement, how much

196. ## PRE-ALGEBRA

How do you solve these inequalities? -2(4k-3)=5(2k)-(-7) 6(2a-3)-3(a-4)=16 3r-2=-4(2-r)-5r+8 -3(c-10)-c=19-5c

197. ## algebra

Which has a larger perimeter ,a 20-inch by 32-inch rectangle or a 28-inch square

198. ## chemistry

How would you go about increasing the buffering capacity of a phosphate buffer? I know that the answer is that you should increase the concentrations of the acid and base equally or increase the total volume of the buffer solution. But can someone explain

199. ## Math

1) Given the universal set U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} and sets A = {2, 3, 4, 6}, B = {5, 6, 7, 8, 10}, C = {6, 8, 10}, and D = {1, 2, 7, 9}, answering the following: 1- a) What is A ∪ C? 2- b) What is A ∩ D? 3- c) What is A'∩ (B ∪ C)? 4-

200. ## Social Studies

Which was the last of the Ivy League schools to admit women?

201. ## calc

if lebron is better than kobe. then lebron would have averaged more points than kobe in the lakers offence right??? yay or nay

202. ## Physics

A charged particle of mass 6.38x10^-31kg is suspended motionless in the air by an electric field. If the electric field is 7.52x10^-21 N/C downwards, what is the magnitude and sign of the charge of the particle?

203. ## Math

Two students, Jim and Joan, are registered for the same class and attend independently to each other, Jim 91.9% of the time and Joan 84.3% of the time. What is the probability that on any given day a) at least one of them will be in class? b) neither will

204. ## chemistry

V(CH3OH)= 2 litres ρ(CH3OH) = 0,80 g/ml v(O2) - ? (How much O2 is it needed to burn with 2 litres of CH3OH?)

205. ## Math

Show why the below equation is true using the areas of rectangles: 2p+5p=(2+5)p 3(4-1)=3x4-3x1

206. ## Physics

You are keeping pace with another runner, at 4 minutes per mile, but are 16 m behind her when she is 130m from the finish line.At what pace will you be running at the finish? *Express your answer using two significant figures.

207. ## english/ help rewording a paragraph :)

Hello! I was wondering if anyone could kind of re word this for me? I'm going through an essay that I've just finished writing up, and I was hoping that this part could be reworded? Anyways, thank you ahead of time! :) Going to school where personal image

208. ## algebra

When using the quadratic formula, why is only necessary to examine the discriminant to determine if the equation only has real number solutions?

209. ## Math

Geometry- Three streets intersect with one another. East Street runs horizontally,North Street runs vertically and Fourth Street runs diagonally and intersects both East Street and North Street. What geometric figure do the three streets form?

210. ## Science

On the movie, Bill Nye the Science Guy, what was the seventh energy after thermal, elctrical, nuclear, sound, solar, and chemical?

211. ## Pre-Algebra

Please let me know if I figured these out correctly. Directions: For the line with the given equation, find the slope of a parallel line and the slope of a perpendicular line. 1)y=6/5x + 144 slope of parallel: 6/5 slope of perpendicular: -5/6 2)4y-4x=16

212. ## social studies

In 1801 Washington, D.C., was located in the center of the country. Where is the center now?

213. ## Math

Jhonatan ate 9/12 of a hotdog, he saved 4/9 of it for his little sister. How much of the hot dog did his little sister eat?

214. ## geography

Where do fronts develop

215. ## calculus

actually an ODE question(but there's no diff. eq. subforum) (y^2)(dy/dx)+y^3/x =2/x^2 using substitution u(x)=y^3 so I've been doing a few of these and getting them all wrong and this problem... I don't know where to start. I tried

216. ## social studies

Was Ponce de Leon the first European explore to explore land that became prt of the United States?

218. ## Math

of 250 candidates writing a exam, 147 passed in math,150 pass in chemistry and 85 pass subjects B)calculate the number of students who pass i)pass math only ii)pass chemistry only iii)passed neither iv)pass only one subject

219. ## College Physics

If you square the equation v=v0 + at, you'll have an expression for v2. Equate the two expressions for v2, and show that the resulting equation reduces to the equation x= x0+v0t + 1/2at2.

220. ## math

math : write an equation that uses 18-?and 10+2.explain how to decide which numbers would make it true.

221. ## physics

i walked from four miles in the direction of 30 celisus south of east, then from there i walked 3 miles to west. from there i walked 5 miles directly toward north. hw far away am i from home?' A: USE PARALLEO=LOGRAM GRAPHING METHOD. B: USE CALCULATION

222. ## math

3square root of 18 + 3 square root of 12 + 2square root of 27 =

223. ## MATH

lim_(x->59)(sqrt(x+5)-8)/(x-59)??

224. ## Math

In the number 22! determine the largest prime factor.

225. ## Math

Find the sum of the absolute values of all integral values of X that make the following expression prime: (x^2-5x)^2 - 34

226. ## ENglish

Can you look over this esssay and tell me what grade you think it deserves?

227. ## Science

A traffic light turns green, a car accelerate from rest and cover 10m in 4s . What is the acceleration of the car , assume uniform acceleration

What is a 6th grade definition for the word "Seraph"

229. ## finance

A speculator sells a stock short for \$55 a share. The company pays a \$2 annual cash dividend. After a year has passed, the seller covers the short position at \$45. What is the percentage return on the position (excluding the impact of any interest expense

231. ## math

what is 2,603,484 rounded to the nearest hundred thousand

232. ## FORMULA

CIRCUMFERENCE FORMULA

233. ## physics

3) A truck is traveling at 35 m/s. Because of an obstruction on the road, it is forced to stop. a) If the truck can decelerate at a constant 5.0 m/s2 how long will it take to stop? b) How far does the truck travel before it stops?

234. ## Social Studies

What King's monument and tomb can be found in the city of Aachen at the Cathedral?

235. ## english

can anyone please help me? I am having to write an essay on Protecting Freedom of Expression by Derek Bok ,I have come up with a thesis but my teacher says no can some one help me with a arguemental thesis.

236. ## geometry

Plot the points (2,4), (-1,4) and (2,1) and connect them to form a triangle. What rule would you use to translate the triangle 5 units to the right? Write your rule in the form H(x,y) = (?,?). Draw the translated figure and label its coordinates.

237. ## math

Tom and kate live 15 miles apart they decide to jog to meet eachother kate left her house and jogged at a rate of 2.5 miles per hour tom left his house at the same time and jogged at a rate of 3.5 miles per hour how long does it take for the two friends to

238. ## English

Hello Can you please come up with a few questions on the following topic: my free time I need to have a few questions which I would answer and in that way write my essay. But I am totally out of ideas :/

239. ## science

V(CH3OH)= 2 litres ρ(CH3OH) = 0,80 g/ml v(O2) - ? (How much O2 is it needed to burn with 2 litres of CH3OH?)

240. ## math

you have two bikes that have same reaction times,one runs a 6.o with 140 60 foot the other runs 5.9 with 150 60 foot.who wins?

241. ## Algebra

Given the function f(x)=2x²-7x+4,find f(10)=? *2x squared

242. ## physics

At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?

243. ## Biology

What is the name for an environmentally sensitive species? Its for a crossword and I can't find the term anywhere. Help would be appreciated!

244. ## math

i have to write seven names for 8. using only numbers less than 10. and use at least three different operations in each name. i have to use parenthesis.

245. ## Physics

The initial velocity of a 2.04 kg block sliding down a frictionless inclined plane is found to be 1.24 m/s. Then 1.23 s later, it has a velocity of 6.70 m/s. What is the angle of the plane with respect to the horizontal? im lost.....

246. ## Physics

Derive an expression for the vertical position of a projectile in terms of its horizontal position. This sometimes called parametric equation or path equation for the projectile. I don't know how to get it please help. Thank you.

247. ## MATH

DESCRIBE THE ANGLE SUM THEORY AND HOW THE FORMULA WORKS. HELP ME PLEASE I NEED TO STUDY FOR A TEST

248. ## intro law enforcement

date 9-22-08 fire in a lawyers office main st, ridgefield ct art work was smashed chairs, papers, and curtains started a fire ( match started it) building is empty over night .5 miles from downtown district 1st fire in a chain from arsonist left a law book

2. Use the properties of the dot product to show that (⃗b·⃗c)a−(⃗a·⃗c)⃗b is perpendicular to ⃗c. Must be shown for arbitrary vectors. I have tried to assign each vector (b,a,c) arbitrary identities with unit vectors i,j,k, but I'm really

250. ## Precalculus

Given the parent function f(x)log(base10)x, state the equation of the function that results from a vertical stretch by a factor of 2/5, a horizontal stretch by a factor of 3/4, a reflection in the y-axis , a horizontal translation 2 units to the right, and

251. ## Math

In the figure below, the diagonal line divides the rectangle into halves Which statement about the figure is NOT true? On the rectangle the width is 3cm and the length is 4cm. The line that divides the rectangle is 5cm F. The perimeter of the rectangle is

252. ## English 7 - Journal Entry Assignment

I have an another journal entry assignment for english this week. Topic - Dicuss a time when you made a decison to do something (Determination), and perservered as a result. What does the topic means????

Typically, the quantity of products people are willing to buy will _______ when prices _______. A. increase; increase C. decrease; increase B. stay the same; increase D. increase; stay the same my answer is C

254. ## physics

A rock is thrown off a cliff in the horizontal direction at a speed of 2.4 m/s. What is the magnitude of its vertical speed 0.38 s later?

255. ## chemistry

how many grams of oxygen are needed to create 437 liters of gas?

256. ## accounting

On December 1, Nautilus corporation borrowed \$90,000 from a bank and signed a 10%, 90-day note payable in the amount of \$90,000. The December 31 adjusting entry will be:

257. ## algebra

what is 2m minus 30 divided by 2

258. ## statistics

The following data lists the average monthly snowfall for January in 15 cities around the US: 26 6 5 45 44 10 39 33 15 33 11 36 36 4 32 Find the mean, variance, and standard deviation. Please show all of your work.

259. ## Trig

Solve Log[8](log[5]x)=0

260. ## Precalculus

What am I doing wrong? I keep getting 48 and its wrong... Solve 2log(x)-log(4)=3log(4) 2log(x)-log(4) log(x/4)=3log4 log(x/4)=log12 x=48

261. ## algebra

When using the quadratic formula, why is only necessary to examine the discriminant to determine if the equation only has real number solutions?

262. ## bilology

peroxidase cannot be used to break down chemicals such as starch. why?

263. ## physics

At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?

264. ## math

determine the ratio for the following drugs and simplify to the lowest term possible. 1. 750 mg tablet of clarithromyan 2. 125 mg of amoxicillin in 5 ml 3. 300 mg raniticline in 2 ml

Helping my son with a book project, what is a plot paper bag or plot mobile?

266. ## algebra

sara ran 1 2/5 miles around track. this was 5 /8 of distance around the whole track. what is the distance around the track?

267. ## Social Studies

How does jefferson's policies of cutbacks as president compared to today?

268. ## math

over 8 months,the value of Alana's investments dropped a total of \$56. What integer value represents the average monthly change in the value of her investments?

269. ## english

4. Satisfaction is given to Mitty in his last daydream by he thinking he ended all his problems. Trend comparing first dream to last dream is that he starts out being brave man then at end of dream he gets executed.

270. ## social studies

An unintended consequence of World War II was the creation of the nation of Israel in order to A. Provide a buffer zone between the West and Communist East. B. Establish a Jewish homeland. C. Create a refuge for Germans who lost their homes during World

271. ## Precalculus

What are the restrictions on the variable in the equation log(3x-5)-log(x-2)=log(x^2-5)? 5/3, 2, ???

272. ## languagge

Where do honey bears live like which country?

273. ## english

5. The purpose they serve be that he be able to deal with a boring, dull existence by using his imagination. He be able to escape his problems by making up fantasies in his mind. Walter Mitty not humourous to himself, he not be humourous to people in his

274. ## statistics

The following data lists the average monthly snowfall for January in 15 cities around the US: 20 9 35 46 44 17 32 25 30 14 28 14 9 15 20 Find the mean, variance, and standard deviation. Please show all of your work.

275. ## physics

At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?

276. ## Mathematics

2/5g = 3/5 Thanks

277. ## chemistry

Why must thiosulfate solution be standarized every couple of days? Please explain with an equation. Thanks.

278. ## Precalculus

Evaluate log(base4)8 + log(base4)(1/8 log(base4)=(8x1/8) =1 I got 1 but the back of the book says 0...?

279. ## Precalculus

Find the bounds on the real zeros of the following function. Please show all of your work.f(x)=x^4+2x^3-x^2-1

280. ## Calculus I

We're reviewing limits from the previous chapter, but I'm still having some difficulty with some problems: lim tan(pi(x/4)) as x-> -7 lim (x^2 - x^3(cos(1/x))/3x^2 as x-> 0 I know the answer to the first problem is 1 and to the second problem it's 1/3 but

281. ## Math

Ms. Perez has a crate has 24 pieces of fruit . 1/2 are oranges, 1/4 are mango's and 2/8 are pineapples. How many oranges are there, how many mango's and how many pineapples?

282. ## Biology

I have a question and I'm not sure if my answer is correct? The heart is supplied with blood by: diffusion through heart wall right and left cardiac arteries arteries that branch directly from pulmonary arteries arteries that branch directly from aorta I

283. ## science

How much total, KE and PE does a roller coaster have when it has a mass of 750 kg, and is 5m above the ground?

284. ## math

find the area of the livingroom the room is 16 feet by 10 feet by 9 feet by 13 feet

285. ## math

Our big black cat had some kittens, one was white one was black and one was tabby. How many cats lived in our house?

286. ## math

Ms.fuller has 2 and 2/6 pies left over from her party. write the number of pies left over as a fraction greater than 1

287. ## math

i had cards to write, i wrote 1 third of cards on monday, 2 eighths on tuesday, 1 sixth on wednesday and wrote the remaining 27 cards on thursday. how many cards did i write?

288. ## Trig

Solve 5^2x -4(5^x)=12

289. ## physics

Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction

290. ## statistics

If I need to validate 900 results, what percentage must I check to have 95% confidence the results are correct?

291. ## geography

Why do mid-latitudes depression dissipate?

292. ## Math

Which of the following would require finding the area? A. Determining the number of sugar cubes in a box B. Determining the amount of paper needed to cover a bulletin board C. Determining the length of trim needed to go around the edge of a bulletin board

293. ## Algebra 1

-square root of 27 - 3square root of 45-square root of 20+2square root of 45

The _______, created in 1995, is assigned the task of mediating international trade disputes. A. EU C. GATT B. WTO D. NAFTA my answer is D

295. ## statistics

random samples of 40 drivers average commuting time 0.05 level of significance standard deviation 7.2 and 9.1

296. ## calc2

Use L’Hopital’s rule to find the limit of this sequence (n^100)/(e^n) ...If you do L'Hop. Rule it would take forever, right? You would always get an (e^n) at the bottom and will have to use the L'Hop. rule 100 times to find the limit...100*n^99,

297. ## accounting

Who would you say benefits more when a company prepares accurate and truthful financial statements?

298. ## physics

A force of 7.36 N acts on a(n) 2.1 kg object for 24.7 s. What is the object’s change in momentum? Answer in units of N · s What is its change in velocity? Answer in units of m/s

299. ## Probability

4,915 people were surveyed about their recent purchases. 1,027 of those people surveyed bought a lawn mower within the last year, 918 bought a snow blower within the last year, and 3,387 didn’t buy either of the two. a) How many people bought a lawn

Can anyone tell me where I can find information for this question. How are proteins synnthesized made?

301. ## math

The cost of a concert ticket is \$28. There are k people in a group who want to go to the concert. Which of the following expressions describes the total amount of money the group will need to go to the concert?

302. ## english

when identifying sentences, what does cx mean

303. ## ms. sue

ms. sue u be able to help me with english or not?

304. ## english

In the springtime ,the mosquitoes.really annoy,really aggreate, really irritate

305. ## math

Marie measured angle KLM.She said it was 60 degrees.What mistake did she make?

306. ## algebra

for the algebraic function described by the expression x^2+2x-6 and written as the function f(6) = x^2+2x-6, what is the evaluation of f(6)?

Often, the _______ the risk, the _______ the rewards. A. higher; higher C. higher; lower B. lower; higher D. faster; quicker my answer A

308. ## science

what is hydrocarbon i think its water but im not sure pls help Lol

309. ## critical thinking

8. Summarize the steps you completed while evaluating both sides of your topic.

310. ## MATH

-3√5 - √6 - √5 =

311. ## Calculus

Consider the function f(x)=2x^3+4x^2+3, and let c be a number in the interval [0,1]. For what values of k is there a c in the interval such that !@#\$%^&?

312. ## chemistry

what causes the the fermentation of wine?

313. ## calculus

Find the volume of the solid bounded by the curves y = 4 - x^2 and y = x revolved about the x axis.

314. ## World History

what is "volunatary allegiance of colonists to the crown" and why was it taken out of the Declaration of Independace?

315. ## English

I really need you to check these sentences. Thank you very much! 1) I fell off (do you need a word afterwards, e.g. my bike) and I bruised my knee. I cleaned the wound under running water, then I dried the area and I put a dressing (a bandage over it)/I

316. ## Math

Can someone help me with this: (x^2y^(-2)-y^2x^(-2))/(xy^(-1)-yx^(-1)) Please and thank you

317. ## MATH

f(x)=x/x^2 – x simplify g(x)=????helppp

318. ## Pre-Algrebra

I have to solve the equation s=g+h and am totally clueless as to how to even start. Please help explain. Thank you.

319. ## Math

Dan ran 9 3/4 miles on Saturday and 7 1/10 miles on Sunday. How many miles did he run on Sunday.

320. ## law

__________ succession refers to what happens to the deceased's property when she dies without a valid will. A. Holographic B. Valid C. Testate D. Intestate is it D

321. ## law

If there are surviving children of the decedent and any of them are not children of the surviving spouse, the spouse gets __________ percent of the estate. A. thirty B. thirty-three C. fifty D. one hundred is it C

What does it mean to ring four integers that yield a sum. The sum is 2.

323. ## English

I left out the following sentences. Thank you. 1) prepare them to become successful individuals thus increasing their job opportunities in a more and more globalized world 2) increase students’ reading skills which they will require to analyse and

324. ## english

3. Mitty reveals about himself that he be brave in his imagination when he says, "We only live once, sergeant...Or do we?". I real not get this question my understanding level be low this.

325. ## math

what is the value of 3/14 rounded to the nearest fouth.

326. ## home economics

Suppose the City of Klamath is considering plans to build a dam on the Klamath River. There are currently social benefits to the recreational fishermen who use the river to catch salmon. The dam would be source of revenue, as it would create hydroelectric

327. ## human services

please tell me if I am correct: a data collection method could be a face to face interview or an observation and a data collection instruments are summary report forms, questionaries, and behavioral diaries? Also could you explain to me what managerial

328. ## Contemporary Communication

What makes a good person a communicator?

329. ## calculus

find the integral of e^x/[(e^x-3)(e^x+4)] dx

330. ## Math

Right ∆ABC has vertices at A(−5, 0), B(0, 0) and C(0,12). What is the volume of the solid figure formed when ∆ABC is rotated about side BC? Express your answer in terms of ð.

331. ## french

can anyone unscramble the letters please.... rtepasn, ipocne, liflmae

332. ## Math

f(x)=x/x^2 – x find limit??? Pleaseee thnks

4x-2=14x-92

334. ## science

how does the thinning of the ozone layer protect your health?

335. ## hss

need help to do a project on louise pasture

336. ## math

Scott made a quadrilateral. Three of the angles of his quarilateral have a mesure of 112, 98, and 52. What is the measure of the fourth angle?

337. ## Math

Can someone help me get started on this question? x^2y^(-2)-y^2x^(-2)/xy^(-1)-yx^(-1) Please and Thank you