brittany

Newest questions and responses by brittany
1. Physical education

Obesity begins at home?

2. college statistics

Post a behavioral research situation that could use a Pearson coefficient research study and a chi square research study. Present the rationale for each selection. Be very specific in your presentation.

3. History

How did glasnost and perestroika contribute to the fall of the Soviet Union? They brought the outside world and different economic and political options to the people. The chance to elect representatives gave people the impetus for change. They created

4. english

lz help 9. Before he would build a wall, the speaker in “Mending Wall” would want to know (1 point) what he was walling in or walling out. who might be profiting from it. what his family would think of it. how effective it was going to be. ***

5. Physics

Suppose you were to drop a 9 lb bowling ball from the top of the Empire State Building, which is about 440 m tall, onto a machine that would catch it and then convert its kinetic energy into electrical energy. For how long could the resulting energy light

6. Physics

While a roofer is working on a roof that slants at 37.0 ∘ above the horizontal, he accidentally nudges his 86.0 N toolbox, causing it to start sliding downward, starting from rest. If it starts 5.00 m from the lower edge of the roof, how fast will the

7. Physics

Two dogs are playing tug-o-war. The first dog pulls with the force of 400N and the second dog is hanging on but is being pulled towards the first dog at a constant velocity. What is the force of friction between the second dog's feet and the ground?

8. Physics

A swimmer crosses a river 300 yards wide by swimming at a constant velocity of 1 mile/hour perpendicular (that is, at right angles to) to the riverbank. The river is flowing at 3 miles per hour. What is the velocity (expressed in m/s) of the swimmer

9. Physics

A baseball is hit by Aaron Judge, a New York Yankees baseball team member, at an amazing velocity of 110 miles/hour at an angle of 35 degrees from the horizontal from home plate in Yankee Stadium in New York City. The baseball was initially launched from

10. Physics

A baseball is hit by Aaron Judge, a New York Yankees baseball team member, at an amazing velocity of 110 miles/hour at an angle of 35 degrees from the horizontal from home plate in Yankee Stadium in New York City. The baseball was initially launched from

11. College Physics

The maximum speed of a 4.0-kg mass attached to a spring is 0.70 m/s , and the maximum force exerted on the mass is 12 N . a) What is the amplitude of motion for this mass? b) What is the force constant of the spring?

Please Break up the sentence. Reserving the property requires a \$500 security deposit , which will be refunded unless there is damage to the property or evidence that there has been smoking in the cottage or a pet on the premises or if the reservation is

13. math

Give an example that shows how to use the Distributive Property to multiply a number by a sum. All of the numbers you use should be mixed numbers or fractions.

14. physics

When the wind is blowing an average of 31.8 mph, a wind tower with its propellors centered at a height of 80 m off the ground is supplied with energy at a rate of 14.4 kW. A large bank of batteries collects the energy from the wind tower. If the efficiency

15. Physics

What is the escape speed of an electron launched from the surface of a 1.5 cm diameter glass sphere that has been charged to 10 nC? Which equation(s) would I use?

16. Algebra 1

I am having trouble with a few questions....Wondering if you could help...My answers have the *** by them..... 1. A lab is growing bacteria in a culture dish. The amount of bacteria in the dish doubles every 3 hours. Initially, there are 500 bacteria in

17. Physics

A tennis player hits a ball 1.6m above the ground. The ball leaves the racket with a speed of 12m/s at an angle 8.0 above the horizontal. The net is a horizontal distance of 7.0m away from the player and is 1.0m high. a) does the ball clear the net?

18. Math

How much feet will u need if the diameter is 4 feet around a circular garden

19. Physics

At which point or points is the electric field zero in figure? I can not post the picture, but this is what it looks like: 1 2 3 4(4+)5 6(-)7 8 9 10 The (4+) is a proton with 4 charges. The (-) is an electron with 1 charge. They are on a number line 1-10.

20. Physics

Space explorers discover an 8.7×10^17kg asteroid that happens to have a positive charge of 4400 C. They would like to place their 3.3×10^5kg spaceship in orbit around the asteroid. Interestingly, the solar wind has given their spaceship a charge of

21. Physics

Starting from rest, a 2500 kg helicopter accelerates straight up at a constant 1.7 m/s2. What is the helicopter's height at the moment its blades are providing an upward force of 29 kN? The helicopter can be modeled as a 2.6-m-diameter sphere. How do you

22. Algebra

Let P0 = \$1000.00. • k = 0.5% = _____0.005______ as a decimal. Compute and explain how to find the doubling time. Then, write the compound interest equation for this value of k and the 3 values for t. Number of years Equation New Value 1

23. math

(3/5 p) + 17 = 68

3/5p+17=68

25. geometry

Line AB is parallel to line CD. What is the sum of the measure of angle K and the measure of angle Y?

26. Geography

unscramble these words risut its a type of watch

27. Math

How many square feet of tile would be needed to cover the area of a room 14 feet long and 12 feet wide?

28. Gen Chem

A mixture of NaCl and sucrose (C12H22O11) of combined mass 10.2 g is dissolved in enough water to make up a 250 mL solution. The osmotic pressure of the solution is 8.29 atm at 23°C. Calculate the mass percent of NaCl in the mixture.

29. Math

The diameter of a soup can is 7cm. The label wraps around the can. About how many centimeters long must the label be to go all the way around the soup can?(use 22/7 for pi) explain how to mentally check whether your answer is reasonable.

30. Math

Suppose f(x)=x^(3)−3 What is the average rate of change of f(x) with respect to x as x changes from 1 to 1+h? The AROC is?

31. Math

Forty percent of the 20 seats on the bus were occupied. Write 40% as a reduced fraction. Then find the number of seats that were occupied.

32. math

How many different rectangular gardens can you make, whose dimensions are whole numbers, if you have 48 m. Of fencing materials and the width is at least 4 m? Consider a 6m by 18m rectangle the same as an 18m by 6m rectangle.

33. Math

Shannon bought 9 pounds of almonds for a total cost of \$27. The cost per pound of cashews is 70% more than the cost of almonds. Shannon bought enough cashews that when she mixed them with the almonds the cost was \$4.00 per pound. What percent of the

34. math

The table shows the outputs y for different inputs x: Input (x) 3 7 11 15 Output (y) 4 6 8 10 Part A: Do the data in this table represent a function? Justify your answer. (3 points) Part B: Compare the data in the table with the relation f(x) = 5x – 21.

35. English

That container of fried rice has spent six weeks in the back of the refrigerator. I need help finding the complete subject and the simple subject.

A class of 32 students voted on their favorite colors. 1/4 students said green is their favorite, 3/8 said red, the rest said orange. What fraction of students said their favorite color is orange and how many voted for each color. very confusing please

37. Physics 101

A carousel has a diameter of 10 m. How far (path length) does little Joey, strapped in at the very edge of the carousel, travel if the carousel is rotated through angle of 45 degrees, 45 rad and 45 rev, respectively?

38. Math

A class of 30 voted on their favorite sport. 1/3 said soccer, 2/3 said basketb. the rest said their favorite is football. what fraction of students favorite sport is football!!! please help

39. Physics

A jet aircraft is flying due south at 300 m/s at a place where the earth’s magnetic field is 80 µT. Find the potential difference between the wing tips if they are 25 m apart. Which tip has the higher potential?

40. Chemistry

4. A 9.25 g sample of sodium reacts completely with sulfur to form a compound with a weight of 15.75 g. I have no clue how to do this problem will some please explain it to me thank you

41. Finance

Could someone tell me how to calculate this in excel? You are applying for a 30-year, fixed-rate (APR 6.50%), monthly-payment-required mortgage loan for a house that sells for \$80,000 today. The mortgage bank will ask you for 20% initial down payment (in

42. chemistry

A chemist determined by measurements that 0.0850 moles of mercury participated in a chemical reaction. Calculate the mass of mercury that participated in the chemical reaction. Round your answer to 3 significant digits.

43. Chemistry

Calculate the moles of aqueous calcium carbonate present in a 50.00mL sample of a calcium carbonate standard solution, assuming the standard is known to have a hardness of 125 ppm (hardness due to CaCO3). You can assume that the density of the sample is

44. Algebra I

I got the following question but since I haven't reached a definite answer I'm wonder if I've solved it correctly: Write the slope-intercept form of an equation of the line that passes through (-2,5) and has an undefined slope. I got: 5=-2m+b 5--2m=b

45. math algabra

The area of the living room is 162 ft2. What are the length and width if the width is twice the length

46. geometry

the track rises 1 foot for every 11 feet run. find the measure of the angle formed by the track and ground level

47. math 1

jake wanted to measure the length, l, of the pond,so he drew this diagram of two similar triangles. what is the approximate length, l, of the pond

48. Chemistry

What mass of oxygen is needed for the complete combustion of 2.10×10−3g of methane? Express your answer with the appropriate units.

49. Chemistry

What mass of water is produced from the complete combustion of 2.10×10−3g of methane? Express your answer with the appropriate units.

50. Chemistry

What mass of carbon dioxide is produced from the complete combustion of 2.10×10−3g of methane? Express your answer with the appropriate units.

51. Chemistry

Consider the reaction 2D2(g)+O2(g)→2D2O(l) What is the mass of heavy water, D2O(l), produced when 7.65g of O2(g) reacts with excess D2(g)? Express your answer with the appropriate units.

52. Chemistry

Balance the given chemical equation using whole-number coefficients. ?D2(g)+?O2(g)→?D2O(l) Enter the coefficients in order separated by commas (e.g., 1,3,2, where 1 indicates the lack of a coefficient).

53. Chemistry

How many molecules (not moles) of NH3 are produced from 1.17×10−4g of H2? Express your answer numerically as the number of molecules.

54. Chemistry

How many grams of H2 are needed to produce 11.80g of NH3? Express your answer numerically in grams.

55. Chemistry

In the Sandwich Shop, select the "Cheese sandwich" option and observe the equation given for the preparation of a cheese sandwich. In the equation, set the number of bread slices to "2" and the number of cheese slices to "1." You will see that the product

56. Chemistry

Find the number of moles of water that can be formed if you have 226mol of hydrogen gas and 108mol of oxygen gas. Express your answer with the appropriate units.

57. probability

a coin is flipped fifteen times how many elements are in the equally- likely sample space? how many different events exist? what is the probability of at most a head occurring? what are the odds at least one head OCCURS

58. math

five hundred raffle tickets are sold for \$2 each. one prize of \$400 is to be awarded. raul purchases one ticket. what is his expected value and fair price of the ticket.

59. science (chemistry)

why does the pH of the acid solution initially increase very slowly when metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds to completion? I thought it may be because the metal is just then being

60. Physics 1

A rotating cylinder about 5.0 miles in diameter is designed to be used as a space colony. With what tangential velocity must it rotate so that the residents on it will experience the same acceleration as that due to gravity on Earth? Recall that ag=g=-9.8

61. Marketing reserch

a marketing researcher analyzing the fast food industry noticed the following restaurant in Cali was 3.30 with a standard deviation of .40. yet in Georgia the average amount spent at a fast food restaurant was 3.25 with a standard deviation of .10. what do

62. math

The sum of two consecutive integers is –49. Write an equation that models this situation and find the values of the two integers.

63. English

I need help with my essay for the book things fall apart The prompt is: what happens when different cultures collide. I don't know how to actually do an essay I need an attention grabber, connector, thesis so basically a ACT also like a melcon I don't know

64. Social Studies

In Chinese society, the merchant ranked below the.. A. farmers & aristocrats*** B. landowners & traders C. aristocrats & priests D. bankers & farmers*** I think it might be either A or D

65. Physics 1

Monique has a mass of 46 kg and she is sitting on a swing that hangs 0.50 m above the ground. Pierre pulls the swing back and releases it when the seat is 1.40 m above the ground. How fast is Monique moving when the swing passes through its lowest point?

66. college algebra

Solve the equation with rational exponents. (X-1)^2/3=36

67. Physics

A cannonball is shot upwards with a total velocity of 61.0 m/s at an angle of 45 degrees from the horizontal. What will its total velocity be when it has moved 345 m horizontally from where it started?

68. Physics

By trial and error, a frog learns that it can leap a maximum horizontal distance of 1.26 m. If, in the course of an hour, the frog spends 27.5 % of the time resting and 72.5 % of the time performing identical jumps of that maximum length, in a straight

69. pharmaceutical math

You need to prepare 180g of a 10% cream using 30% stock cream and a cream base. How much is needed for each

70. pharmaceutical technology

If you add 16g of salicyic acid to 84g of an ointment base what is the final concentration w/w of the product

71. History

How would be a good way to make an persuasive essay on Immigration Reform in the United States??????? I need an answer tonight if possible.

72. chemistry

what is the molality of 18 g NaCl in 200 g of H2O?

73. Math

A savings account at Xyz bank offers 4% interest, compounded annually. How much money must I invest today in order for the account to grow to \$5,000 in ten years? Answer to the nearest whole dollar.

74. Inverses of functions

−9+f−1(a−1)=−12 f(−3)=2

75. Chemistry

What mass (in grams) of sodium chloride, NaCl, is needed to make 422. g of a 3.39%(m/m) NaCl solution? (atomic masses: Na = 22.99, Cl = 35.45)

76. Physics

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 200 N applied to its edge causes the wheel to have an angular acceleration of 1.048 rad/s2. (a)

77. Physics

The four masses shown in the figure below are connected by massless, rigid rods. moi-cog-problem-fig (a) Find the coordinates of the center of gravity of this object if MA = 120 g and MB = MC = MD = 180 g x = ? m y = ? m (b) Find the moment of inertia

78. geometry

QRST is a trapezoid. If angle S is equal to 23 degrees, what is the measure of angle T

79. Math

Find the equation of the tangent line to the graph of y=3cot^4x at x=pi/4 3cot^4(pi/4)=3(1)=3

80. physics

An object is being thrown upward at 50m How long does it take the object to reach maximum height? What is the maximum height of the object? How much time does it take for the audit to return to its original position? What is the velocity of the object when

A balloon filled with air does not rise as a balloon filled with helium. What does this tell you about the density of helium? A. Helium is more dense than air B. Helium is less dense than air C. The two gases have the same density D. When heated, helium

82. statistics

The human resources department of an engineering company gives IQ tests to a randomly selected group of new hires every year. They claimed that the mean IQ score of new hires, , from this year is greater than or equal to the mean IQ score of new hires, ,

83. math

The polynomial x 3 + 5x 2 -57x -189 expresses the volume, in cubic inches, of a shipping box, and the width is (x+3) in. If the width of the box is 15 in., what are the other two dimensions? ( Hint: The height is greater than the depth.)

84. Prevents

If a book would cost 36 dollars and it had 10 percent of discount how much would the book cost after the discount

85. math

If it takes a runner 15 minutes to run a mile how many miles would he run in two and half hours?

86. pre calculus

a gun with a muzzle velocity of 1200 feet per second is fired at an angle of 6 degrees above the horizontal. find the component form of a vector. verify the magnitude

87. Math

The quarterback of a football team releases a pass at a heights of 7 feet above the playing field, and the football is caught at a height of 4 feet, 30 yards directly downfield. The pass is released at an angle of 35 degrees with the horizontal. The

88. Precalculus

The quarterback of a football team releases a pass at a height of 7 feet above the playing field, and the football is caught at a height of 4 feet, 30 yards directly downfield. The pass is released at an angle of 35 degrees with the horizontal. The

89. trig

A plane is flying due south at a speed of 192 mph. a wind is blowing in at 53 degrees at 13 mph. what is the bearing of the plane?

90. Math-Statistics

Assume your expected lifetime income is \$1.5 million and the standard deviation is \$250,000. a) What is the chance that you will earn more than \$1.1 million during your lifetime? b) What is the chance that you will earn less than \$2 million during your

91. english

Which synonym of the word look would be most effective in the following sentence? Detective Flint leaned forward with narrowed eyes to _______ what appeared to be a vital clue. A. survey B. scrutinize C. view D. ogle I think it's B.

92. geometry

A person riding the original Ferris Wheel is traveling at a speed of 0.495 mph. If one revolution takes 9 minutes, what is the diameter of the Ferris Wheel? Show your work.

93. health

Drinking in moderation or not drinking at all will typically lead to? A. Weight gain B. Heart disease C. Weight loss D. High blood pressure

94. Math

XY= -25 what is the constant of variation for this relationship? a. 1/4 b. -25 c. -2.5 d. -0.4

95. math

A student has a penny, nickel, dime, and quarter distributed two coins apiece to his front two pants pockets. What is the probability that the front right pocket has more then 30 cents in it?

96. math

A truck drove 1400 miles at a rate twenty miles per hour slower on the return trip. If the trip took 22 hours total, how fast was the truck going on the return trip? Round your answer to the nearest hundredth.

97. math

Find the original price of a pair of shoes if the sale price is \$56 after a 20% discount

98. Math

a restaurant charges a reservation fee of \$15 for its party room, plus \$21.50 per person. If the bill was \$445, how many people were at the party? HELP PLEASE! IS THE ANSWER 30?