# Questions Asked onSeptember 19, 2011

1. ## physics

a ferry is crossing a river. If the ferry is headed due north with a speed of 2.5 meters per second relative to the water and the river's velocity is 3 meters per second to the east, what will the boat's velocity be relative to earth?

2. ## Physics

Two planes approach each other head-on. Each has a speed of 765 km/h, and they spot each other when they are initially 11.0 km apart. How much time do the pilots have to take evasive action?

3. ## Physics

The figure below gives the path of a squirrel moving about on level ground, from point A (at time t = 0), to points B (at t = 3.00 min), C (at t = 6.00 min), and finally D (at t = 9.00 min). Both axes are marked in increments of 2.00 m (therefore the

4. ## Environmental Engineering

Consider the air over a city to be a box 100km on a side that reaches up to an altitude of 1.0 km. THe air is blowing into the box along one of its sides with a speed of 4 m/s. Suppose an air pollutant with a reaction rate of K = 0.20/hr is emitted into

5. ## physics

A car moves at 12 m/s and coasts up a hill with a uniform acceleration of -1.4 m/s2 a)What is its displacement after 6.0 s b)What is its displacement after 9.0 s?

6. ## physics

A point charge of 2.4 μC is located at the center of a spherical shell of radius 17 cm, which has a charge −2.4 μC uniformly distributed on its surface. Given: ke = 8.98755 × 109 Nm2/C2 . a)Find the electric field for all points outside the spherical

7. ## Geography

What is the difference between a physical map and a political map?

8. ## English

Holidays are important to everyone. They boost your spirits. a. Correct b. Shift in person I would say it is correct, but then again isn't Everyone a singular prnoun? 2. After the teacher collected our essays, she told the students that she would return

9. ## chemistry

A 1.00 mol sample of N2O4 (g) is placed in a 10.0 L vessel and allowed to reach equilibrium accourding to the equation N2O4(g) 2NO2(g) K = .0004 Calculate the equilibrium concentrations of N2O4(g) and NO2(g)

10. ## Mathematics

At a charity bike rally, 2/3 of the student population of Heartsworth Middle School participated. If there are 1,200 studentes at Heartsworth, how many participated?

11. ## Math

At a local river, there were 48 alligators laying on the riverbank. If 5/6 of the alligators were asleep, how many were not asleep?

12. ## math

A company made \$4 million in the second quarter. This is 1/3 more than it made in the first quarter and 4/5 of what it made in the third quarter. How much did the company make in the three quarters combined?

13. ## geography

Which nation is farther north, Egypt or Greece? My answer is - Greece is farther north. Am I right?

14. ## Science

Unscramble acnsrl spgei

15. ## math

Find all values of c such that the limit exists lim x-->1 (x^2 + 3x + c) / (x-1)

16. ## math

if you had a fraction strip folded into tenths,what fractional lengths could you measure with the strip

17. ## science(regents)

A television advertisement claims that a certain brand of cough drop reduces coughing for 8 hours. Describe an investigation that could be determine if this claim is vaild. IN your answer include this> - the treatment give to the expertimental group -

18. ## physical science

which of the following statements correctly describes the substance with the formula KI?

19. ## math

what do penguins eat for lunch

20. ## Physics

The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 5.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could

21. ## Physics

A daredevil is shot out of a cannon at 54 degrees to the horizontal with an initial speed of 33.3 m/s. A net is positioned a horizontal distance of 41.8 m from the cannon. At what height above the cannon should the net be placed in order to catch the

22. ## math

Suppose you plan to make a box that will hold exactly 40 one-inch cubes. what are some demensions of all the possible boxes you can make? I thought of 2 but i can't think of anymore. Here's what I have, are they right? L= 10 W= 2 H= 2 L= 5 W= 4 H= 2 Can

23. ## physics

How far should and object be from a concave sperical mirror of radius 36cm to form a real image one-ninth it's size?

24. ## physics

A stone falls from rest from the top of a cliff. A second stone is thrown downward from the same height 3.3 s later with an initial speed of 64.68 m/s. They hit the ground at the same time. The acceleration of gravity is 9.8 m/s2 . How long does it take

25. ## physics

A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 34.3 . The rocket accelerates for a period of 8.00 before exhausting its fuel. The rocket continues its ascent until its motion is halted by gravity. The

26. ## math

A rectangular play yard is to be constructed along the side of a house by erecting a fence on three sides, using house wall as the fourth wall. Find the demensions that produce the play yard of maximum area if 20 meters of fence is available for the

27. ## Physics

A big summer movie has a running time of 96 minutes. What is the movie's running time in seconds?

28. ## college physics

A certain person's eye measures 24.0 mm from the pupil to retina. (a) If we treat the eye's lens as a thin lens, what is its focal length when the person focuses on a pencil 44.3 cm from the eye? (b) While the person focuses on the pencil, what is the

29. ## physics

I am looking out a window that is 1.3m tall. A water balloon suddenly drops across the entire length of the window in .22 seconds. How far above the window was it dropped?

30. ## Physics

a uniform rod of 3 kg and length 1 m is suspended from a fixed point by means of strings of length .8m and .6m which are attached to the free ends of the rod such that rod is horizontal. find the tensions in the string

31. ## Algebra 2 math

What is the 32nd term of the arithmetic sequence where a1 = 12 and a13 = –60?

32. ## physics

Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of è = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the ball goes over the outfield wall 420 feet away and lands

33. ## Physics

A car is traveling 28 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.0 m/s2. How far does the car go before it stops?

34. ## REALLY EASY

Which of the following explanations correctly describes the reason we see the Sun rise and set each day? 1.The Sun rotates on its axis 2.The Earth revolves around the Sun in an elliptical path 3.The Earth rotates on its axis 4.The Sun revolves around the

35. ## physics

A woman rides a carnival Ferris wheel at radius 16 m, completing 4.2 turns about its horizontal axis every minute. What are (a) the period of the motion, and the magnitude of her centripetal acceleration at (b) the highest point and (c) the lowest point?

36. ## Algebra

The ordered pairs represent values for x and y. (1,1) is x =1 and y=1. Substitute these ordered pairs in the equations and evaluate to see if are true. Then, graph the points and line to find another solution.

37. ## Physics

In the game of baseball, a pitcher throws a curve ball with as much spin as possible. This spin makes the ball “curve” on its way to the batter. In a typical case, the ball spins at about 20.5 revolutions per minute. What is the maximum centripetal

38. ## physics

A batter hits a softball over a third baseman's head with speed and at an angle from the horizontal. Immediately after the ball is hit, the third baseman turns and runs at a constant velocity , for a time . He then catches the ball at the same height at

39. ## Physics

a car leaves skid marks 84 m long on the highway. Assuming a deceleration of 7.50 m/s2, estimate the speed of the car just before braking.

40. ## physics

A cannon sends a projectile towards a target 1390m away. The initial velocity makes an angel of 39 degrees with the horizontal. The target is hit. The acceleration of gravity is 9.8m/s^2. what is the magnitude of the initial velocity?

41. ## arithmetic

If you have the terms 64, 49, 36, 25, 16, 9, 5, and 1 what equation will work to find the nth term?

42. ## physics

Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.40 , slowing your 950- car from 16.0 to 9.50 .

43. ## Math

To subtract 91 from 99, do you need to regroup? Explain

44. ## economics

Suppose the supply and demand for milk is described by the following equations: Qd=600-100P, Qs = -150+150P, where P is price in dollars . Qd is quantity demanded in millions of gallons per year. A. Create supply and demand tables corresponding to these

45. ## statistics

the authors's generac generator produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volts, and the voltages have a bell-shaped distribution. using the empiral rule, what is the percentage of voltage amounts between 124.4 and

46. ## statistcs

Bao Xishun is the world's tallest man with a hieght of 92.95 in. (or 7ft, 8.96 in.). men have hieghts witha mean of 69.6in and a standard deviation of 2.8 in. 1) convert Boa's height to a z score 2) does Boa's height meet the criterion of being unusual by

47. ## chemistry

calcululate the molality of CsCl in a 8% by mass aqueous solution. answer in units of m

48. ## MATH

The value V of a machine t years after it is purchased is inversely proportional to the square root of t+2. The initial value of the machine is \$10,000. Find the rate of depreciation when t=5 . Round your answer to two decimal places. A. -381.80 PER YEAR

49. ## physics

A landscape architect is planing an artificial water fall. Water flowing at 1.11 m/s will leave the end of a horizontal channel at the top of a vertical wall h=4.00 m high. Will the space behind the waterfall be wide enough for a pedistrian walkway? To

50. ## PHYSICS

A stopper tied to the end of a string is swung in a horizontal circle. If the mass of the stopper is 13.0 g, and the string is 93.0 cm, and the stopper revolves at a constant speed 10 times in 11.8 s, a. What is the angular velocity of the stopper?

51. ## Physics

A small mailbag is released from a helicopter that is descending steadily at 2.87 m/s. a)After 5.00 s, what is the speed of the mailbag? b)How far is it below the helicopter?

52. ## physics

A sphere is fired downwards into a medium with an initial speed of 40 . Part A If it experiences a deceleration of , where is in seconds, determine the distance traveled before it stops.

53. ## anatomy'

disease is an unhealthy state of a. organ system b.the entire body c. an organ d.all are true

54. ## Physics

On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.3 times as far as he would have on earth, given the same initial velocities on both planets. The ball is launched at a speed of 40 m/s at an angle of

55. ## calculus

Use the demand function X=325(1-(6p/7p+4)) to find the rate of change in the demand x for the given price p=\$5.00. Round your answer to two decimal places. A. 5.13 UNITS PER DOLLAR B. -0.85 UNITS PER DOLLAR C. 0.85 UNITS PER DOLLAR D. 1.35 UNITS PER DOLLAR

56. ## physics

A helicopter is rising at 5.2 m/s when a bag of its cargo is dropped. The bag falls for 2.5 s. what is the bags velocity

57. ## statistcs

The authors generac generator produces voltage amounts with a mean of 125.6 volts and a standard deviation of 0.3 volt. using the Chebyshev's theorem, what do we know about the percentage of voltage amounts that are within 3 standard deviations of the

hi, what is the least possible number, when rounded will become 1,000,000? would it be 999,999?

59. ## physics

An airplane has a velocity relative to the air of 192 m/s in the westerly direction. If the wind has a speed relative to the ground of 59 m/s directed to the north, what is the speed of the plane relative to the ground?

60. ## Chemistry

Chloroform is a liquid that is not soluble in water. It has a density of 1.498g/mL. Astudent mixed a sample of chloroform and a sample water and observed the result. Sketch what the student saw, and identify all components of the drawing. for a container,

61. ## Physics

A home run is hit such a way that the baseball just clears a wall 30 m high located 117 m from home plate. The ball is hit at an angle of 40 degrees to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 2 m above the

62. ## phyiscs

The height of a helicopter above the ground is given by h = 2.90t3, where h is in meters and t is in seconds. At t = 1.75 s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground?

63. ## PHYSICS

8) A rock of mass 400 g is tied to one end of a string that is 2.0 m in length and swung around in a horizontal circle. It takes 2 s to complete one circle. a. Find the angular velocity of the rock just as the string breaks. b. At what speed is the rock

64. ## science

How do the physical properties of the parts of a pencil affect howthe pencil is used?

65. ## Psychology

Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows. Person Dexterity Anxiety 1 1 10 2 1 8 3 2 4 4 4 -2 (c) figure the correlation

66. ## chem

How many gold atoms are in an 0.408 ounce, 18 gold bracelet? (18 gold is 75% gold by mass.)

67. ## calculus

Find all values of x in the interval [0, 2π] that satisfy the inequality. (Enter your answer using interval notation.) 14 cos(x) + 7 > 0

68. ## statistics

For an ungrouped data set with an odd number of observations that have been sorted or arrayed from smallest to largest values, where is the median located?

Use the digits 3, 7, 1, 5 to write a number that rounds to each of the following. 2,000 3,500 6,000 7,400

70. ## algabra

Aki’s Bicycle Designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x) = 0.1x^2-1.2x+9.457, where C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per

71. ## Chemistry

An object travels at a speed of 7500 cm/sec. How far will it travel in a day?

72. ## physics

A quarterback throws the football to a sta- tionary receiver who is 26 m down the field. The football is thrown at an initial angle of 36.5 to the ground. The acceleration of gravity is 9.81 m/s2 . a) At what initial speed must the quarter- back throw the

73. ## Math

A plumber makes \$4.50 per hour more than his apprentice. During an 8-hour day, their combined earnings total \$372. How much does each make per hour? (hint: if you decide to use cents instead of dollars,then use 450 cents per hour and 37200 cents total

What are 6 human adaptions to the environment in Angola, Africa? Thanks!! :)

75. ## math

comparing 1,272 and 1,269. Do you need to cmpare the ones digits? Which number would be the farther to the right on the number line and why?

76. ## calculus

Find lim f(x) for f(x)=Ix-3I/x-3 x->3

77. ## Englishpleashelp

After the teacher collected our essays, she told the students that she would return the graded papers on Wednesday. a. Correct b. Shift in person My friend and I say it is a shift in person since it says OUR and then shifts it to students. are we correcT?

78. ## help

conversions: 3.0 cups/lb to L/Kg how do i go from cups to liters ? i know that 1pt=2 cups but i still cannot figure it out?? help

79. ## 4th grade Math Help

Samuel has 1,482 baseball cards in his collecion. Maria gave Samuel 126 cards. How many cards does he have now? Explain what computation method you used and why. Please Help! Thanks Kevin

80. ## math

A rectangular playground is 80 feet wide and 100 feet long. Nicole made a scale drawing of the playground using a scale of 1 inch : 20 feet. What will be the length of the playground on the scale drawing?

81. ## math

Two planes took off from a Chicago airport flying in opposite directions. One plane traveled 30mph faster than the other. They were 1500 miles apart after 2hrs. How fast was each flying

82. ## calculus

Find the derivative of the given function. Simplify and express the answer using positive exponents only. y= ((9x^2-4)^3/7x^2+4)

83. ## chemistry

A 51 kg person drinks 270. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 15% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? [Hint: The work done in

84. ## Physics

A landscape architect is planing an artificial water fall. Water flowing at 1.11 m/s will leave the end of a horizontal channel at the top of a vertical wall h=4.00 m high. Will the space behind the waterfall be wide enough for a pedistrian walkway? b. To

85. ## Math

For the limit lim x → 3 (x3 − 2x + 5) = 26 illustrate the definition by finding the largest possible values of δ that correspond to ε = 0.2 and ε = 0.1. (Round your answers to four decimal places.)

86. ## Geometry. HELP!!

The ratio of the measures of an angle to its complement is 3:2. Find the measures of the angles. (don't give me the answer, just tell me the process, thank you).

87. ## 3rd math

Bethany has 40 apples. Write a subtraction story about the apples that would require regrouping. Then write the answer in a complete sentence.

88. ## math

In each game of marbles a loser gives the other player a marble when they finish jane won 15 times, and kathy has 22 more marbles than when she started how many games did they play

89. ## Chemistry

A 50.0mL sample of ethylene glycol had a mass of 55.505g. Find the density of ethylene glycol.

90. ## chemistry

Carbon atoms can form single, double,triple covalent bonds, but there is no experimental evidence for thr formation of quadruple covalent bond..pls., explain why this is so.

91. ## Physics

On a spacecraft two engines fire for a time of 560 s. One gives the craft an acceleration in the x direction of ax = 5.10 m/s2, while the other produces an acceleration in the y direction of ay = 7.30 m/s2. At the end of the firing period, the craft has

92. ## chemistry

If given the quantum numbers: 2,1,-1,-1/2 give the element. I understand the first two numbers and getting to the p orbitals of the second period, but I am not sure on how to designate -1 and -1/2 to Carbon (the answer) Also for: 4,1,0,-1/2 is Selenium. I

93. ## Science: Physics

A big summer movie has a running time of 96 minutes. What is the movie's running time in seconds?

94. ## math

John receives \$200 for his birthday. He buys 4 DVDs at \$12.95 each. Sales tax is 6.25%. How much birthday money does he have left?

95. ## English

Can you help me determine if I chose the correct/incorrect sentences appropriately. It’s really urgent. 1)Jenny, 13, says “My favourite subject is English. We all have to learn English in my country because it is very difficult to find a job if you

96. ## Chemistry (rate reactions)

The rate constant for the thermal decomposition at 85 degrees Celsius of dinitrogen pentoxide equals 6.2 x 10 raised to -2 min. As determined by experiment this decomposition is first order-- 2 N2O5 ----> 4 NO2 + O2 Calculate the rate of the reaction when

97. ## physics

A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 g. (a) Find the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.) how many electrons:

98. ## help

conversion problems: \$3.98/lb to cents per gram 3.0 cups/lb to L/Kg (please show me the work) thank u

99. ## Algebra II

The length of a rectangle is twice its with. The are is 128yd^2. Find the length and the Width

100. ## sql

Write a SELECT statement that returns four columns based on the InvoiceDate column of the Invoices table: • Use the CAST function to return the first column as data type varchar. • Use the CONVERT function to return the second and third columns as a

101. ## Math

The measure of one angle in a linear pair is 30 more than twice the measure of the other angle. Find the measure of the angles. (I really need help! Thanks)

102. ## REALLY EASY

Which of the following are a consequence of the Earth's yearly motion around the Sun? (check all that apply) 1.the Sun appears in different constellations in different seasons 2.the planets look different than stars 3.the Sun rises and sets 4.the Moon

103. ## pre-calculus

the path of a ball is given by y=-.05+3x^2+3x+5, where y is the height (in feet) of the ball and x is the horizontal distance (in feet) from where the ball was thrown. Find the maximum height of the ball.

104. ## Engineering

It is found that ozone reaction in water nearly follows first-order kinetics in ozone concentration decreases by 50% in 12 minutes (t1/2 = 12 min). A water supplier wants to inject ozone into a pipe bringing water to thee water treatment plant to

105. ## Algebra 2-Probability

1. What is the theoretical probability of rolling a sum less than 5 using two number cubes? a.1/6 b.1/4 c.1/2 d.3/4 2. Segments parallel to the sides are used to divide a square board 3 ft on each side into 9 equal-size smaller squares. If the board is in

106. ## math

if u received 2 dozen items and sold three of those items the first day, how many of those items are left?

107. ## theme (lit)

what is a theme of magical realism? why might magical realist authors right so much about this theme?

108. ## xsxsds

The cellular phone plan you signed up for gives you 400 minutes a month for \$35 and charges \$.15 for each additional minute over 400 minutes. How long can you talk on the phone each month and stay within a budget of \$45?

109. ## human geography

plezz help me on this question here goes identify and explain ,in paragraph form, 2 reasons why some geographers today believe Malthus' theory used to predict the future population issues?

110. ## calculus

a circle, with a diameter 48 cm is cut into 12 equal sectors. a square, with a side length 41cm, is cut into 16 equal squares. wich has the greatesst area? how much greater is it

111. ## geography

Which country has the largest land area in Europe? In Asia? My answer was - Russia is the largest in both Asia And Europe. Ms. Writeteacher looked and my answer and asked me if I was sure Russia was in Europe. All the maps that I have been looking at show

112. ## geography

Kabul is the capital of the country that borders the Soviet Union, Iran and Pakistan. What is the country's name? If I looked at my map correctly the answer is - Afghanistan. Am I right?

113. ## geography

Ms. Sue, I am not home schooled. Our teacher gives us a geography sheet every week and we are to find the answers in our book, encyclopedia, online, or whatever reference material we can. The question about Kabul really had the Soviet Union on the actual

114. ## math

the length of a rectangle is four times its width. if the area is 100 m2 what is the length of the rectangle?

115. ## chem

A student placed 12.0grams of glucose in a flask added enough water to dissolve glucose by swirling then added additional water until the .100 ml mark. A 60.0ml sample of this glucose soon was diluted to 0.500 L. How many grams of glucose are in 100. ml of

116. ## physics

a car slows from 22m/s to 3m/s at a constant rate if 2.1m/s. how many seconds are required before the car is traveling at 3m/s

117. ## math

use the distributive prperty to rewrite the expression without parentheses. 1. (-2a)(a+7) 2. (-3x)(-x^2+2) 3. (2x + 11)(5x) 4. (-2-3y)(-7y^2 5. (t-4)(-2) 6. (x)(x-5)

118. ## Chemistry

Temperature Rate Constant 310 0.830 320 2.27 330 5.83 340 14.2 350 32.8 Use an Arrhenius plot to determine the frequency factor for the reaction. I know the equation to find the frequency factor is K= Ae^-Ea/RT but i am still getting the wrong answer. Do I

119. ## Math

1. Evaluate the indefinite integral ([6x^2 + 12x^(3/2) +4x+9]/sqrt x)dx. Answer = + C 2. Evaluate the indefinite integral (12sin x+4tan x)dx. Answer = + C 3. Evaluate the indefinite integral. (x^7)e^(x^8)dx. Answer = + C Thank you for helping.

120. ## geography

Which country has the largest land area in Europe? in Asia? My answer - Russia is the largest in both Asia and Europe. Am I right?

121. ## Psychology

Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the test (with an estimated

123. ## physics

a 40 kilogram barrel is rolled up a 10 meter long ramp to a height of 5 meter how much does the barrel weigh

124. ## physics!

A copper wire 81.9 cm long and 1.10 mm in diameter has a mass of 6.43 g. (a) Find the number of electrons in the wire. (Copper has an atomic number of 29; that is, there are 29 protons in the Copper atom. Copper's atomic mass is 63.5.) how many electrons:

125. ## calculus

For the limit lim x → 3 (x3 − 4x + 4) = 19 illustrate the definition by finding the largest possible values of δ that correspond to ε = 0.2 and ε = 0.1. (Round your answers to four decimal places.)

well i'm trying to do 49 x27 how would you do that?

127. ## Geography

Are there 7 countries in Central America?

129. ## Math

Marta picked 37 apples. Jin picked 35 apples. Ken picked 23 apples. How can you use place value to find the number of apples picked in all?

130. ## Calculus Infinite Geometric Series

So this is what Im basically doing, I got how to do Number 1 and 2. This is the way I did it. Im supposed to find the common ration and the sum number. 1. 4 + 2 + 1 + ... The Common ratio is 0.5, so in decimal form it would be 1/2. I sort of get confused

131. ## anatomy

What contains blood vessels that nourish the growth zone of the hair? -hair shaft -arrector pili muscle -hair root -hair bulb in follicle -cortex -hair papilla

132. ## chemistry

Substance A has a specific heat of .650J/gK and substance B has a specific heat of .325J/gK. If 100 J of energy is applied to a 10 g sample of each substance, which will have a higher temperature?

133. ## Chemistry

How many grams of formaldehyde, H2CO, are in 500 ml of a 40% solution of formaldehyde in water? (Assume for this problem that the density of the formalin solution is 0.98 g/ml)

134. ## Science: Physics

A circle graph has labeled segments of 5.7%, 21%, 13, and 6%. What % does the unlabeled segment have?

135. ## Psychology

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

136. ## Physics

What net external force is required to give a 35.7 kg suitcase an acceleration of 2.8 m/s2 to the right? Answer in units of N.

137. ## chemistry

If you dissolve 29.25 g of sodium chloride in 250 g of H2O. What would be the freezing point? Kfp- -1.86 degrees C/molal I know the formula is K times molality. I am taking -1.86(2.00) and getting -3.72 degrees Celsius, when the answer is -7.44 degrees.

138. ## Geography

Which ocean does most of the International Date Line pass through? I think it is the Pacific is that correct?

139. ## math

how many oz of 25% alcohol solution must be mixed with 14oz of 30oz alcohol to make 26% alcohol

140. ## Math

To subtract 91 from 99, do you need to regroup? Explain

Can someone help me with this question by providing resources. What are the major implications for using positive psychology to study business ethics? Give a specific example .

142. ## Physics

Iron has a density of 7.9g/cm^3, what is the mass in kg of an iron statue that has a volume of the bottle in cubic meters?

143. ## English

Choose the one that is not correct Wood frame house are caught fire. Clothing burst into flame and people suffer intense third-degree flash burns over their exposed flesh.

144. ## chemistry

Substance A has a specific heat of .650J/gK and substance B has a specific heat of .325J/gK. If 100 J of energy is applied to a 10 g sample of each substance, which will have a higher temperature?

145. ## engineering

The velocity of a sports car is graphed as a function of time . Use the graph to answer the questions. a) Find the sports car’s maximum velocity, , during the 10- interval depicted in the graph. b) During which time interval is the acceleration positive?

146. ## Penn Foster

what's the answer to question 1.in subject Planning and implementing for the Envioroment Question, The three major areas of a child care facility are A. Adult,service and storage. B. adult, children's and service C. Children's service. and activity D.

147. ## calculus

For the given equation, find the slope of the tangent to the curve at the point (-4,2). y^2+8y+x^2+8x-4=0 A. -1.50 B. -0.50 C. -2.00 D. 0.00 E. UNDEFINED

148. ## math

/I'm trying to do 225 divided by 5 in distruburive peoperty how wuold i do that

149. ## statistics

once again I am not getting this. assume that the population of heights of male college students is normally distibuted with a mean of 69.09 and standard deviation of 4.71. A random sample of 92 heights is obtained. find the mean and standard error of the

150. ## Math

A rectangle of length of 10 cm has diagonals of length 12 cm. Calculate the width of the rectangle.

151. ## Math

1. Evaluate the indefinite integral integral symbol[6x5+2sec(x) tan(x)]dx. 2. Integral symbol 8 at the top, 5 at the bottom 3x2+3x2 dx = Thanks

152. ## math

what is the largest are of rectangular area that can be enclosed in sixteen meter fence ?

153. ## algebra

counterexample if x less than or equal 6, then 2x-3 less than 9

154. ## math

the perimiter of a triangle is 122cm. If the lengths of the sides of the triangle are(3x-1)cm, (4x+2)cm and (2x-5), what is the lenght of the longest

155. ## physics

If a ball is thrown vertically upward with initial velocity of 8 meters per second, what would the speed be when it returns to the starting point with acceleration of 9.81?

156. ## Math

solve for x Pc/x = c/p

157. ## Chemistry I

I need to convert 0.17mg of NaCl to formula mass units. How would I go about that?

158. ## English

Thank you very much. I just wanted to know if the statement in 2 is correct or incorrect. 1)Lorenzo says:” I’m not very fond of French and English. I think learning foreign languages takes a lot of time and you have to revise too often. If you don’t,

159. ## english

who is the richest man in the village who can afford to buy the land forfeited by George Jacobs if Jacobs hangs as a witch?

160. ## help with hw

convert : 60 cents per doz oranges to cents per orange please show me the work......

161. ## statistics

Suppose that is normally distributed with mean 90 and standard deviation 12. What value of does only the top 20% exceed?

162. ## English

You are a technical writer in a large company, working on a training manual to help hew users learn the company’s computer system. Employees will use your manual in training seminars taught by your company’s trainers. The manual will also serve as an

163. ## math

draw a diagram to show how to find the solution 2.6 / 0.4 explain what the quotient means

164. ## geometry

M= (x+25) L=55 find the value of x

165. ## geography

The line of longitude which passes through Greenwich, England, is called the ? My answer is - The Prime Meridian. Am I right?

166. ## geography

The line of longitude which passes through Greenwich, England, is called the ? My answer is - The Prime Meridian. Am I right?

167. ## calculus

Find the points of discontinuity on [-3,5] for the function f(x)=[[x-1]], where the double bracket indicates the greatest integer function.

168. ## calculus

identify the type of curve and sketch the graph of y2-2x+6y+5=0

169. ## math

1.) 15 * 4 2/3 2.) 10 2/3 divided by 4

170. ## Biology

A student claims the probability a human sperm will receive all chromatids of maternal origin is 50 %. Explain why she is wrong. Are the following true or false and support your answer: i. Red blood cells and nerve cells in adult humans are suitable for

171. ## math

the rule in words is to divide by 2 then subtract 1...what is the equation if Input(x) Output(y) 2 0 4 1 6 2 8 3 10 4 I can't get a grip on it...please help!!

172. ## Chemistry-help

Hi, I have a question on Gas Chromatography(GC). The following were injected into the GC system: - 1) 1% sample solution in acetone 2) a 500 times dilution of item 1) The retention time of the main peak in the diluted sample solution 2) shifted by ~ 2min.

173. ## calc - limits

I have been trying to figure out these limit problems and I get stuck on trying to move the function around to make it possible to solve. The first one is: lim sinx - cosx / tanx - 1 x--> (pi/4) All I've gotten so far is to replace tanx with sinx/cosx but

174. ## Chemistry 112

4Nh3(g) +3O2(g)=2N2(g)+6H2O(g) has kp=2.1x10^6 atm. Initial concentration of NH3=2.00 atm, and N2=1.00 atm, with all other concentrations being zero. Compute final concentration of NH3.

175. ## calculus

If f(x) = 5x - 7, what is f(2)?

176. ## geography

Does a line of latitude or a line of longitude divide the Earth into Northern and Southern Hemispheres? This is an easy one but I just want to double check. The answer is a line of latitude. Right?

177. ## English

You told me they were inappropriate because there could be many combinations and not just one (for example: grow up, get up together, hold/host and have a party) Is it better to say "go on the internet" or "surf the internet"? I still have an exercise to

178. ## Chemistry

Describe the process of ionization using hydrogen chloride, HCL, and water, H2O ?

179. ## math

mary has 108 red beads and 90 green beads she wants to use all the beads. how many necklaces can she make and how many of each color will be on each necklace

180. ## Programming Logic

Programmign Logic for business Modify the PROCESS routine in Section 5.4 to determine whether the student is full time or part time before checking whether he or she lives in district or out of district. Use a flowchart and pseudocode to show your

181. ## Maths

Evaluate the limit lim 7e(^-6x) as x -> infinity. Thanks

182. ## english 11 honors

in the story the great gatsby how would you explain what the following quote means; There were the same people, or at least the same sort of people.the same profusion of champagne the same many colored, many keyed commotion, but i felt an unpleasantness in

183. ## social studies

who was the star of "Steamboat Willie''

typical weights for tiger clubs age(weeks) expected body weight(kg) birth 1.3 1 2.3 2 3.0 3 3.8 4 4.5 5 5.2 6 6.0 7 6.7 8 7.5 9 7.6 10 8.9 11 9.7 using table above describe the pattern relating age and weight. Do you expect this pattern to continue

185. ## math

when the product of 6 and 6 is divided by thesum of 6 what is the quotient

186. ## Math/Calculus

Find the average rate of change on the interval [-6,3] of the function h(x)=x^2-4x+7. A. -7 B. 7 C. 1 D. 13 E. -5

187. ## world history

what enlightenment philosopher most inspired the creators of the us constitution? What do tea, sugar, stamps, and French product all have in common?

188. ## math

find the product or quotient . write the strategy you used . write model,break apart, multiplication table ,inverse operations pattern ,or doubles 56 divided by 7

189. ## calculus

Determine the following limit. lim (1/x-3) x->3

190. ## economics

Is it possible for companies both to maximize financial value for shareholders and to act responsibly in the communities in which they operate, to treat their employees, customers, and suppliers well, and to engage in activities that are good for the

191. ## FRENCH

which group of people first planted the grape vines: a) the romans b) the guals c) the french

192. ## statistics

given the following population data, x=17,13,23,15,19,19,21,28 calculate the z score value for a score of 18.

193. ## math

tami wrote the even number between 325 and 337 the sum of the hundreds digits and tens digit equals the ones digit

194. ## Algebra

use the distributive prperty to rewrite the expression without parentheses. 1. (-2a)(a+7) 2. (-3x)(-x^2+2) 3. (2x + 11)(5x) 4. (-2-3y)(-7y^2 5. (t-4)(-2) 6. (x)(x-5)

195. ## algebra

Danna wants to get 93 average in her three tests she took two tests and the scores are 89 and 94 what should be her score in the next test?. I know the answer . However I don't know the way please help

196. ## math

If arc BF = 45‹ and arc AE = 39‹, what is the measure of Ú1?

197. ## physics

A car travels up a hill at a constant speed of 32 km/h and returns down the hill at a constant speed of 61 km/h. Calculate the average speed and the answer is not 46.5

199. ## Math for Professionals

You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9%

200. ## physics

A particle travels along a straight line with a speed = (0.50 -7 ), where is in seconds. Determine the acceleration of the particle when = 2 .

201. ## calculus

I really appreciate all of your help!

202. ## chemistry

A 13.5 g sample of X reacts with a sample of Y to form 81.1 g of XY. What is the mass of Y that reacted?

203. ## physics

A figure skater is warming up on the rink. She does a lap of a 100m rink. She completes the laps in 3 minutes. What was her speed?

204. ## L.arts

the book says Ponyboy,Dally, and Johny saved the kids in the hall way when they were in the church is that true? because in the movie they didn't

205. ## trig

Sketch the graph of f(x)=sin(x+30 degrees) and g(x)=cos2x in the same system of axis [-180 degrees;180 degrees]

206. ## Math

Math help??? 1.) 13 1/3 divided by 6 2/9 2.) 15 * 4 2/3 3.) 10 2/3 divided by 4

207. ## geometry

What is volume of a rectangular container that is 15 inches long,3 1/2 inches wide,and 10 inches high

208. ## English

I have to write a 700 word essay on what my name means ????????????? And I need help!!!!

209. ## algebra mrs sue help

-16 - (-43) i got -16 + (43) = 27 -156 - 98 i got -156 + 98 = -254 -192 - 47 i got -192 + -47 = -239 0 - (-51) i got o + 51 = 51 -63 -89 i got -63 + -89 = -152 -12 - (-21) i got -12 + 21 = 9 92 - (-16) i got 92 + 16 = 108 72 - 15 i got 72 + -15 = 57 -86 -

210. ## College English

I need to write a 700 word essay on what my name means. Can I please get some help!!!

211. ## calculus

Describe the interval(s)on which the function f(x)=(x-11/x^2-121) is continuous.

212. ## Language Art

Anyone know what those words call that depend on how you use it on a sentence, it can have a positive or negative feeling?

213. ## Math

Pedro says the next expression in the following pattern is n+17,n+18,n+15,n+16,n+13,n+14._____ . Explain his error and write the correct expression.

214. ## math

making bracelets 3 strands 4 colors how many combinations are there

216. ## History

I am doing a research paper on the French and Indian war, and I can't find the environment that the French were in compared to the British.

217. ## french

I am doing a debate in french and my side is that the HLM in France isnt working and it should be replaced with a new type of system. Do you know any websites with information about the HLM in france. All I can find in wikipedia. also any charts or graphs

218. ## math

to subtract 4 5/6 from 10 1/2, you must renamed the mixed number 10 1/3. How do you rename the 10 1/3?

219. ## HISTORY OF HEALTH CARE

how can we research on HISTORY OF HEALTH CARE?

220. ## Mathemtics =/

Help please!? 1)5/8 divided by 5? 2)45 divided by 3 3/4 3) 3/4 + 5/8 ------------= 3/4 - 1/2

221. ## history

If a photographer took the same picture of this wilderness setting landscape, would it be as colorful and peaceful?

222. ## algebra

two angles are complementary the measure of one angle is 1 1/2 times the measure of the other find the measure of each angle x+1.5x=90 2.5x=90 x=36 x+y=90 36+y=90 y=54 want to know if this right

223. ## math

I'm trying to see what the question; How many temperatures are at least 44 degrees, but don't know if it should be the same as 44 degrees, or i it should be less than or higher than 44 degrees.

224. ## social studies

3.8 centimeters represents about how many kilometers?

225. ## Algebra

[-3 1 3] [-3 -5 -3] A=[-2 5 -4] B=[2 -1 4] If[4 -2 -1]and [-5 -2 -5]find BA I add the number and I came out with 666 468 and 946 I think I'm wrong Please help...

226. ## calculus

Need help asap! what is the limit as x approaches 0 of -x/tan(3x) ?

227. ## Chemistry

Convert 19.0cm cubed to meters cubed?

228. ## Government US

Thomas Sowell said a very wise thing. "If by “fair,” you mean everyone having the same odds for achieving success, then life has never been anywhere close to being fair, at any place or time." Fair and unfair have been in debate for a long time, and no

229. ## Algebra

A fitness club charges \$3.50 per visit plus an annual fee of \$150. What type of function is this(linear, quadratic, or inverse variation)?

230. ## day care

simone works at a day care center in her town. in her position, she hires an trains staffmembers.She enforces the center policies and handles its finances. What is simones position at the center?

231. ## physics

a 1200 kg car goes from 15m/s in 16s. What is the average force acting on it?

232. ## geography

What two countries are similar in physical shape? My answer is Africa and South America Is this right?

233. ## Englishpleashelp

We, Us) Persian Gulf veterans are proud of our service. a. We b. Us Is it we or Us? I think it is We since you know in the constitution that is how it goes. We goes with US We the People of the United States, in Order to form a more perfect Union,

234. ## MATH

IN MY KIDS HOMEWORK THE NUMBER 3 IS TO THE LEFT AND IT ASKS TO PLACE COUNTERS IN THE FIVE FRAME TO SHOW THE NUMBER. WHAT IS A COUNTER?

235. ## English

Though you once told me this exercise was not very appropriate I’d like to know if there are alternatives to the ones I chose: Complete the verbs in the phrases p……… football play football g……… advice give advice b………… friends

236. ## American Government

In The Declaration of Independence how did they signify the colonists’ relationship to Britain?

237. ## heathhcare

give me a medical timeline from the last 50 years?

238. ## statistics

i have 95 beads. 20 more red than blue.two times as manywhite beads than red beads. how many blue beads do i have?

239. ## writing

explain how purpose, audience, tone, and content impact academic writing.

240. ## math

find the average 2 1/3 3 3/4

241. ## Math

If f (x) = sin3 x, find f'(x). Find f'(−2pi/3) Thanks.

242. ## maths

an aeroplane flying at 600 km travels for 3 hours on a bearing of 310T how far north and how far wesr is it from its starting point after 3 hours

243. ## algebra

9 - 26 got -17 -4 - 15 i got : -19 21 - (-7) i got: 28 27 - (-16) i got: 43 -16 - (-43) i got 59 47 - 19 i got : 28 -156 -98 i got : -58 -192 -47 i got: -145 0 - (-51) = 51

244. ## geomatry

is the amount of space between two points on a line it is always expressed as a non-negative number

245. ## algebra

HOW MANY OF EARTHS MOONS WOULD COVER THIS SAME DISTANCE?

246. ## Algebra

(-1,4) and (5,8) is (x1,y1) and (x2,y2). The slope is m=(y2-y1)/(x2-1). Substitute and evaluate to find the slope.

247. ## statistics

compute the percentile rank of the raw score 8 in the following distribution 8,5,6,9,3,5

248. ## accounting

Identify what professional development needs and goals are required for superannuation with a brief explanation of what each one is about.

249. ## Math

What is a polygon with 12 sides ?

250. ## physics

60mi/h is how many m/s?

251. ## Math

travel 250 mi in 5 h need the unit rate for each situation.

252. ## properties of operations

why don't i have to do any computing to solve 15 times 0 times (13+7)

253. ## disease

what is the relation between high Blood glucose level (not Diabetes) and Urinary tract infection.

254. ## English

Could you check these sentences, please? Thank you. 1)The protagonist soon sees a light coming from the bottom of the wall that make(s) the figures seem spectral and unbearable, like demons looking at him from different directions. 2) He devoted his entire

255. ## calculus

x squared minus four, at which intervals is the function increasing or decreasing?

256. ## a l g e b r a

-16 - (-43) i got -16 + (43) = 27 -156 - 98 i got -156 + 98 = -254 -192 - 47 i got -192 + -47 = -239 0 - (-51) i got o + 51 = 51 -63 -89 i got -63 + -89 = 152 -12 - (-21) i got -12 + 21 = 9 92 - (-16) i got 92 + 16 = 108 72 - 15 i got 72 + -15 = 57 -86 -

257. ## geometry!

can anyone please explain to me how to solve these problem step by step: 1. 3x+y= -6 2. 2x-5y=12 thank you!

258. ## physics

What is the kinetic energy of a car of mass 1900 kg moving at a constant speed of 21 m/s

259. ## hw help ASAP

8.00in^3 to ml please show me how to solve this

260. ## physics

What is the velocity of a car going east for 50 miles in one hour? my answer. 50 miles/hour (east)?????

261. ## math

sophia is making raffle tickets for the schools give away drawing.she wants to use the digits 2,5, and 7 to make three-digit numbers how many different three-digit numbers can she make if she uses each digit once

262. ## math

solve. (3k+4.2)+8.6 and (3s)x8

263. ## Geology

Im having a difficult time with a geology final question. "The number of ice advances during the Pleistocene was most likely" one four 20-25 over 100 I understand one cap, 4 major ice events with 11 ice advances but am very unclear on an answer or how to

264. ## Math

what does the output is 6 less than one-half of the input mean?

265. ## math

23 + 45 = 68 the sum is even Explain use word and / or numbers

266. ## math

kathy's family uses 138 gallons of water doing laundry each week. how many gallons of water does kathy's family use for laundry in 1 year? (hint: 1 year = 52 weeks)

267. ## 11french

can someone proof read my paragraph? Salut tout le monde! Je m'appelle Olivier et j'ai ne au Congo en Afrique. Je suiss venu en Canada quand j'ai ete sept ans pour echapper les confits politiques et pour trouver le paix. Le langue officiel au Congo est le

268. ## Mathemtics

Help??? 13 * 4 2/3

269. ## INFORMATION SCIENCE

Modify the PROCESS routine in Section 5.4 to determine whether the student is full time or part time before checking whether he or she lives in district or out of district. Use a flowchart and pseudocode to show your solution. Here

270. ## Help needed!!!

Help please!? 1)5/8 divided by 5? 2)45 divided by 3 3/4 3) 3/4 + 5/8 ------------= 3/4 - 1/2

271. ## easyish MATH

for a project i need to graph numbers like: 3.456 billion, 92.07 billion etc. however i need to graph 1.009 TRILLION and 1.268 trillion. i wanted to keep the scale written as billions, how can i express the trillions as billions? thanks!

273. ## physiology

what happens to the osmotic pressure with increasing solute concentration

274. ## Bioloby

What are important criteria for PCR primer design?

275. ## math

explain how you would round 265,588 to the nearest ten thousand

276. ## easy math

this is easy, but for whatever reason, i cannot get it :/ how would i express 3.456 billion as a number? or 1.009 trillion? i justneed them in their full form so i can put them in an excel graph :( thanks!

277. ## Mat126: Survery of Mathematics

In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading. As you answer the questions above, identify what types of misrepresentation or misuse have been

278. ## chemistry

what is the formula of a pumpkin?

279. ## English

How important is the setting of the novel A Farewll to arms What impact does the setting have on the interpretation of events?

280. ## Chemistry

6000 millimeters equal how many meters?

281. ## science

An object measures 12 x 3 x 2.5 cm and has a density of 0.6 g/cm3. When it is placed in water, what is the volume of the part of the object that is above the surface of the water?

282. ## United states history

Which was the 50 state added to the u.s.

283. ## Science

Analyzing Ideas- Why would you weight less on a high mountain than you would at sea level?

284. ## easy math

for a project i need to graph numbers like: 3.456 billion, 92.07 billion etc. however i need to graph 1.009 TRILLION and 1.268 trillion. i wanted to keep the scale written as billions, how can i express the trillions as billions? thanks!

285. ## lab chemistry

what is the boiling point of 2-propanol at the top of pike's peak

286. ## math

odd and even numbers

287. ## Math

Math help??? 1.) 13 1/3 divided by 6 2/9 2.) 15 * 4 2/3 3.) 10 2/3 divided by 4

288. ## maths

slove the equestionx+√x=6/25

289. ## (hsb)

solve the problem of housing

290. ## French

I am doing a debate in french and my side is that the HLM in France isnt working and it should be replaced with a new type of system. Do you know any websites with information about the HLM in france. All I can find in wikipedia. also any charts or graphs

291. ## MATH

I am a number between 0.23 and 0.31. I have 3 digits. All of my numbers are the same. What number am I?

292. ## Geometric Series (bobpursley)

Could you please check my same post again, I had another question.

293. ## math

f 2/3 of amount x is 60, then what is 4/5 of x?

294. ## Math

How do you show the distributive property for 12 x 468

295. ## physics

A figure skater is warming up on the rink. She does a lap of a 100m rink. She completes the laps in 3 minutes. What was her speed? Answer a. 33.3 m/min b. 300 m/min c. 66.7 m/min my answer b.300 m/min ?????

296. ## science

Suppose a new drill could reach twice as far in the earth's crust as a drill can today. How would this affect rocks?

297. ## Essential Mathematics 1

7 1/3 - 2 5/6

298. ## math

simplify 5/7 - 1/2 (1/3+3/7)

299. ## math

15 1/36 - 1 1/9+3 1/3

300. ## critical thinking.

"Some lawyers don't lie," is an example of which kind of categorial proposition? a. Particular Negative b.Particular Affirmative i think its a but i'm not sure

301. ## Mathemtics 1

3 1/9 * 2 1/4

302. ## Essential Mathemtics 1

13 1/3 / 6 2/9

303. ## math

8/25 / 1/5 *6/5

304. ## geomtry

when two planes intersect, their intersection is a:

305. ## FRENCH

the square kilometer area of france is: a) 180,000 b)550,000 c)360,000

306. ## english

what is (considering wear expression ) mean?

10 2 2/3 / 4

308. ## math

find the average 5/8,2/5,1/40

-6r (12s)

4/3x+2=-1

311. ## English

i need few points about the following topics fixation,inter fiction and foster reading pls help me you know

312. ## math

(1/2)^2 +1/2 * 2 2/3 simplify

313. ## math whats wrong with the answer

(1/4)2 +3/4* 2 3/5 =214/96

314. ## helppppppp

convert 8.8m/sec to km/hr please show steps

how to divide x^3 -1 by x^2 - 4.

15 * 4 2/3

317. ## math

write a polyoil equation ofleast degree for each set of roots +/-2i,3,-3.

318. ## brief calc

estimate the derivative of the function. when you are unable to eliminate the h in denominator use h=.001 3^x