1. math

a.u.s nickel contains 3.9g of copper and 1.2g of nickel. how many kilograms of copper must be combined with 500 kg of nickel to make nickel coins?

2. Physics

A player strikes a hockey puck giving it a velocity of 47.673 m/s. The puck slides across the ice for 0.175 s after which time its velocity is 46.473 m/s. The acceleration of gravity is 9.8 m/s2 . If the puck strikes the goalie’s pads and stops in a

3. physics

A 87.2 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 44.2 m behind the ship, at rest relative to the spaceship. The only

4. chemistry

Determine the expression for the equilibrium constant for this equilibrium reaction: 2NO(g) + 2CO(g) (arrows)(in equilibrium with) N2(g) + 2CO2(g) PLease help anyone i really apreciate it Beccy

5. chemistry

Ethanol was used in the solutions to help dissolve the acetylsalicylic acid. Ethanol is slightly acidic, and will react with NaOH. Describe a blank correction experiment; i.e., what experiment you might do to determine how much NaOH reacts with the ethanol

6. Chemistry

Are the following chemicals light sensitive? 1) Potassium Iodide (KI) 2) Sodium thiosulphate (Na2S2O3)

7. Physics

A block weighing 6.8 N requires a force of 2.5 N to push it along at constant velocity. What is the coeﬃcient of friction for the surface? A weight W is now placed on the block and 4.6 N is needed to push them both at constant velocity. What is the

8. chem

What is the frequency of radiation whose wavelength is 26.80 Angstrum ? at first i got 1.000e17 and it was wrong. now i only have 1 more try. i tried it again and got 9.993e16 but i don't want to put it in unless its correct. can you guys check my work?

9. physics

Somewhere between the Earth and the Moon, the gravitational pull exerted by these two bodies on a space pod would cancel. Is this location nearer the Earth or nearer the Moon? A) Nearer the Earth. B) Nearer the Moon. C) At the half-way point.

10. physics

a car traveling in a large circle passes by a motorcycle that is traveling in a straight line from North to South. both of their speedometers read 10m/s. which statement below is true? A. The car and the motorcycle have the same speed, but different

11. statistics

from a group of six people two individuals are to be selected at random. How many possible selections are there?

12. Physics

Consider the 676 N weight held by two cables shown below. The left-hand cable had tension 740 N and makes an angle of θ with the wall. The right-hand cable had tension 730 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the

13. physics

An electric field of 264,000 N/C points due west at a certain spot. What are the magnitude and direction of the force that acts on a charge of -6.75 µC at this spot? magnitude?

14. physics

a) Find the inductance of an ideal solenoid with 300 turns, length 0.5m, and a circular cross section of radius 0.02m. b) A solenoid with = 1000, = 1.0 cm and = 50cm is concentric within a second coil of = 2000, = 2.0 cm, and = 50cm. Find the mutual

15. english

• Write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence. • Mark each verb used in bold and, in parentheses, identify the specific tense used. • Post your

16. Chemistry

A .35M solution of a newly synthesized acid, HX, has [H+] of 4.1 x 10^-2. What is the value of Ka for this acid?

17. BIology

Reptiles have some specific adaptations that make them well suited to their environment. In your own words, discuss some of these adaptations by answering the following questions. Each answer should be constructed in one or two well-developed paragraphs.

18. physics

calculate the amount of heat energy required to raise the temperature of a 5kg block of solid platinum from 0 degrees celsius to 25 degrees celsius. the specific heat of platinum is 133j/kg k. how much heat energy is required to raise 5kg of water by the

19. Physics

You are driving at the speed of 33.4 m/s (74.7296 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press your brakes 0.484 s later. Assume that the brakes on both cars

20. Physics

A golf ball strikes a hard, smooth floor at an angle of θ = 29.6° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.041 kg, and its speed is 45 m/s just before and after striking the floor. What is the magnitude of the

21. spanish

1. Write a paragraph in the preterit explaining what happened yesterday or last week. Write at least 8 sentences in correct Spanish. (24 points)

22. english...help

The preparations for Hate Week were in full swing, and the staffs of all the Ministries were working overtime. Processions, meetings, military parades, lecture, waxwork displays, film shows, telescreen programs all had to be organized; stands had to be

23. Physics

The average speed of a Nitrogen molecule in air is about 858 m/s, and its mass is about 4.68 × 10−26 kg. If it takes 2.6 × 10−13 s for a nitrogen molecule to hit a wall and rebound with the same speed but in the opposite direc- tion, what is the

24. Physics

The average speed of a Nitrogen molecule in air is about 858 m/s, and its mass is about 4.68 × 10−26 kg. If it takes 2.6 × 10−13 s for a nitrogen molecule to hit a wall and rebound with the same speed but in the opposite direc- tion, what is the

25. Allied health

Under HIPAA, which one of the following statements is true regarding the release of PHI by covered entities to business associates? A. Covered entities are responsible for the use of PHI made by business associates. B. Covered entities aren't allowed to

26. math

Mr. Jones grosses \$800 per week. He has 6% automatically deposited into his savings account. At the end of the year 3% is added to the account. How much will he have in his savings account at the end of the first year after the interest is added?

27. Economics

Assume that the gross national debt initially is equal to \$3 trillion and the federal government then runs a deficit of \$300 billion. i. What is the new level of gross national debt? Gross national debt is the total amount outstanding in public and private

28. statistics

The owner of a bottling company is considering buying a new bottling machine. He has been testing two different machines that are being considered. After collecting 300 samples from each machine over several weeks, he was able to conduct a two sample z

29. physics

A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8000 N/C. The mass of the water drop is 3.54 10-9 kg How many excess electrons or protons reside on the drop?

30. Allied health

If disclosure of PHI is permitted under HIPAA, what is disclosed? A. All information the particular doctor has on that patient, B. Information the doctor thinks should be disclosed, C. The minimum necessary to accomplish the purpose of the disclosure,

31. physics

Two charges are placed on the x axis. One of the charges (q1 = +9.4 µC) is at x1 = +3.1 cm and the other (q2 = -22 µC) is at x2 = +9.3 cm. Find the net electric field (magnitude and direction) at x = +6.5 cm. (Use the sign of your answer to indicate the

32. biology

which level of organization encompasses all of the others? A. Ecosystem B. Community C. Population D. Division

33. Chemistry

Compounds can be classified as acids or bases according to _____ different theories.

34. Physics

You are driving at the speed of 33.4 m/s (74.7296 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press your brakes 0.484 s later. Assume that the brakes on both cars

35. math

A mechanical toy on a circular track goes forward 3in. and then backwards 2in. How many MOVES does the toy take to complete one 15in. revoltion of the track?

36. chemistry

I am very confused about hybridization in general. Please give an explanation on how to do this. Which of the following pairs of atomic orbitals of adjacent nuclei can overlap to form a sigma bond? a pi bond? or no bond at all? a) 1s and 1s b) 1s and 2px

37. Physics

The parachute on a race car that weighs 8036 N opens at the end of a quarter-mile run when the car is traveling 39 m/s. The acceleration of gravity is 9.81 m/s2 . What net retarding force must be supplied by the parachute to stop the car in a distance of

38. algebra

The formula b=27a, is used in New England to estimate the minimum furnace output, b, in BTUs, for a modern house with a square feet of flooring. What is the minimum furnace output for BTUs? What is the answer to A? I have searched and listened to all kinds

39. Health

What are the benefits & disadvantages of using medical terminology as medical Office manager

40. social studies

what effect did the trading civilization of phoenicia have on the ancient world

41. algebra

In 1995, the life expectancy of males in a certain country was 73.7 years. In 2002 it was 77.5 years. Let E represent life expectancy in year t and t represents the number of years since 1995 E(t)=? t + ? E (11) =? life expectancy of males in 2006

42. XMGT/216

As the senior executive charged with bringing Little Company into the corporate fold, how do you proceed? What are your obligations to Big Company, Little Company, and the customers of both? What do you owe to shareholders and the financial community? Are

43. pharmaceutical calculation

The doctor writes a prescription for aminophylline 125mg po qid x 10 days. You only stock the 250mg/5ml strength. How many teaspoons would be needed for one dose? How many mls would be needed to fill the entire prescription?

44. Chemistry

A student mixes 100.0 mL of 0.300 mol/L silver nitrate solution with 100.0 mL of 0.300 mol/L calcium chloride solution. a) Determine the theoretical yield of the precipitate. b) If the actual mass of precipitate is 4.00g, calculate the percent error of

45. electromagnatic

a) Find the force on a straight conductor of length 0.30m carrying a current of 5.0A in the direction, where the field is T. i. b) A conductor of length 2.5m located at z=0, x=4m carries a current of 12.0A in direction. Find the uniform in the region if

46. physics

what is the weight of a 6 kg object on the surface of Mars

47. Chemistry

How do I determine the noble gas configuration of Sm+3? I know the normal noble gas configuration of Sm is[Xe]6s2 4f6. Thanks!

48. thermodynamice

A cylinder contain 3 kg of water and water vapor mixture in equilibrium at a pressure of 500 KN/m^2. If the volume of the cylinder is 1.0 m^3, calculate the following. A)temperature of the mixture B) the volume and mass of the liquid C)The volume and mass

49. math

Soybean meal is 18% protein and cornmeal is 9% protein how many pounds of each should be mixed to get 360 pounds that is 17% protein?

50. social studies

where did people work if they were a cook in medieval times

51. algebra

Solve the system of equations by graphing then classify the system 4x+y=26 5x+6y=4

52. COM155

In ( ) are my verb tense. Would you please tell me if they are correct? I need (Present Tense) to participate in a financial program to help me with successful financial planning. In my online college course we did learn( Past Progressive Tense) about

53. English

I forgot to include a few more sentences. Thank you. 1.What did you eat last weekend/over last weekend? 2.See words on the back (of the photocopy) 3.I noticed later that you had written the missing words on the back of the photocopy. 4.What time did you go

54. Geometry

a door that is 6 ft by 6inches tall and 36 inches wide. Can apeice of plywood that is 7 ftby 8 ft be carried through the door?

55. Geometry

A boat starts at point A, moves 3 km due north, then 2 km die east, then 1 km due south, and then 4 km die east to point B. Find the distance AB.

56. accounting

What is the impact on the income statement if the cost of goods availaable were to be incorrectly assigned to the cost of goods sold? Also, is there an impact to the balance sheet?

57. physics

A 87.2 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 44.2 m behind the ship, at rest relative to the spaceship. The only

58. Fashion

(x to the second power-3x+2)and (5x to the second power-3x-8)= Show all work

59. Math

Mrs tan baked some muffins and packed them i big and small boxes for sale.Each big bbox contained 4 muffins and each small box contained 2 muffins.At first,there were 4 times as many small boxes as big boxes.After she had sold half of the small boxes and

60. English

I forgot to include these two last sentences. i hope you can have a look at them, too. Thank you. 1) In 1989 film director Stanley Kubrik offered him the part of Bill Harford in the film Eyes wide shut. What/which part did Kubrik offer him in the movie

61. Algebra

The sum of the measure of the first angle and one-fourth the second angle is 63.75 degrees;The two angles are complementary. How to find the measure of the angles?

62. physics

a motorist runs out of gas and must push his 3000kg car across a flat road 200m to the gas station. ignoring friction how much work must be done in order to get the car to the gas pump? if the motorist accomplishes this in 10 minutes, how much power has he

63. Algebra

Hi. I am having some problems with substitution method and i just can't seem to get these right. I have 1. 2x - 3y = -1 with y = x-1 2. -4x + y = 6 with -5x- y = 21 and finally, 3. -5x + y =-3 with 3x -8y = 24

64. Language Arts

What does 'stave' mean? (used as chapters in A Christmas Carol)

65. geometry

find the area of the shaded area of the circle. half circle radius

66. Chemistry

We are always told to use freshly prepared potassium iodide (KI) for titrations. Why?

67. science

A test liquid has a density of 1.1 g/ml. When you pour some of it into a cup of water, what will happen (assuming that their natures are such that they don't mix and that there is no chemical reaction between the two substances)?

1. solve sqrt (11-x) = sqrt(x-7) choices are 6,7,8 or9 I think according to my calcs the answer is (9) The range of f(x) = sqrt(3x-6) - 2 answers would be y= (-2) y> (-2) y

69. English-help needed

I also thought that both are acceptable. However, I am confused because we usually write "The shoe manufacturer" and "The clothes manufacturer" but not "The shoe's manufacturer" or "The clothes' manufacturer". Can you help me on this? Thanks. Posted by

70. statistics

For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant

71. thermodynamic

N2 is described by its state properties of temperature @ -100 degree C, and Pressure @ 10.0 MPa. Determine if it is reasonable to assume that the given substances behaves as a real or non-ideal substance determine its compressibility factory Z.

72. MATH

6: A bricklayer charges \$8 per square foot to lay a patio. How much would it cost for the bricklayer to lay a 12-foot-×-16-foot patio? A. \$960 B. \$192 C. \$224 D. \$1536

73. physics

the work needed to push something to the top of a frictionless inclined plane depends upon the plane's.....

74. English

I still have a few doubts on the use of the word "narrator". Shall I refer to it as "it" or "he". 1)For example: "The narrator can be obtrusive, when he/it interferes in the narration giving his/its own points of view. 2)I added a few other sentences I'm

75. algebra

substitution method 4x+9y=52 x=35-5y

76. algebra

parallel, neither , or perpendicular 4x+3y=10 3x-4y=8

77. geometry

a rectangle plot of land is to be seeded with grass if the plot is 22m x 28m and 1 kg bags of seed is needed for 85 m2 of land how many bags of seed are needed

78. biochemistry

The hydrolysis of one mole of sulphate ester produces one mole of protons.In a reaction tube containing 1.0ml of 0.02M TRIS buffer,pH8.08,sulphate ester was incubated with sulphatase for 10 min.At the end of reaction,the pH was reduced to 7.97.Calculated

79. Statistics

About how many participants are needed for 80% power in each of the following planned studies that will use a t test for dependent means with p < .05? Predicted Effect Size Tails (a) Medium Two (b) Large One (c) Small One

80. physics

calculate the period of a pendulum if the length of the pendulum is o.8m. what is the period if the angular deflection is 30 degrees? 45 degrees?

81. Chemistry

Superphosphate, a water soluble fertilizer, is sometimes marked as a "triple phosphate". It is a mixture of Ca(H2PO4)2 + 2CaSO4. Ca3(PO4)2 + 2H2SO4 --> Ca(H2PO4)2 + 2CaSO4 If you treat 400g of calcium phosphate with 267g of sulfuric acid, how many g of

82. English

i need help finding some propaganda used today i need an example of each of the following propaganda: glittering generalities transfer bandwagon please help and thank you

83. ENGLISH

He prayeth best, who loveth best All things both great and small; For the dear God who loveth us, He made and loveth all. The main theme of "The Rime of the Ancient Mariner" is _____________. a.be nice to sailors b.watch the weather c.love all God's

84. pharmaceutical calculation

A physician orders 2gms of an antibiotic to be placed in 1000ml of D5W. Using a constituted injection that contains 300mg/2ml, how many mls should be added to the IV solution?

85. math

How did your past experiences affect your attitudes toward math in general?

86. Chemistry

A student mixes 100.0 mL of 0.300 mol/L silver nitrate solution with 100.0 mL of 0.300 mol/L calcium chloride solution. a) Determine the theoretical yield of the precipitate. b) If the actual mass of precipitate is 4.00g, calculate the percent error of

how are leading and managing different?

88. electromagnatic

a) Determine at 500kHz for a medium in which = 1, = 15, = 0. At what velocity will an electromagnetic wave travel in this medium? b) Find the propagation constant at 400MHz for a medium in which = 16, = 4.5 and = 0.6 S/m. Find the ratio of velocity to free

89. statistics

For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant

90. math

the line passes through the point (3,-8) and ,(-7,1)

91. Algebra-I really need help, please?

I have to solve sqrt(2x-7) >=5 answers would be x>=16 x>=7/2 7/2

92. Algebra II

Determine the number of solutions of x^2 - 5x + 40 = 0 answers could be 0 1(double root) 2 I'm not sure on this one where to start I know I think I set it up quadratic formula but then I'm baffled

93. math

The seventh book in the Harry Potter series has 759 pages. How many 2s were used when typing the page numbers?

94. math

Susan has 50ft of fencing to use to build a garden in her backyard. A: The shape must be a rectangle/square. B: Sketch at least five different examples that Susan could use for her backyard and state what the perimeter of each one is. C: The most important

95. math

m = 4,(7,6) can anyone show me how to work this problem please and thank you in advance

96. algebra

is (-4,7) a solution of 9x-7y=9

For my school assignment I am to create a Facebook for George Washington. Anyone have an idea of people I could put in his friends list?

98. math

if the product of two numbers is 180 and the LCM of the two numbers is 60 then how do I determine what the GCF is?

99. Biology

Which of the following is NOT consumed by fungal decomposers? A. First-order heterotrophs B. Third-order heterotrophs C. Producers D. None of the Above

100. english

i think the swubway slogan "Eat fresh" is a type of glittering generalities but i don't know why. can someone explain to me why. please and thank you

101. Biology

Which of the following is NOT consumed by fungal decomposers? A. First-order heterotrophs B. Third-order heterotrophs C. Producers D. None of the Above

103. English

We have purchased a batch of material directly from the manufacturer. 1) No discount was provided by the material manufacturer. 2) No discount was provided by the material's manufacturer. Are both sentences acceptable?

104. chemistry

A solution of acid was found to have a pH of 1.60. What is the hydrogen ion concentration of the solution? (3 sig.fig) [H+(aq)] = ? mol dm–3

105. english

I need help determining the key differences between the four types of writing (summary, analysis, synthesis and evaluation).

106. algebra

elimination method 3r-5s=-14 5r+35-56

107. Algebra

Hi. I am having some problems with substitution method and i just can't seem to get these right. I have 1. 2x - 3y = -1 with y = x-1 2. -4x + y = 6 with -5x- y = 21 and finally, 3. -5x + y =-3 with 3x -8y = 24

108. Spanish

do you know when some books say "adapted by:..." I would like to know how to write this in Spanish

109. Math

you are 70 meters from train and road crossing with the train going 60meters per second, after 4 seconds has fast is the train traveling away from you?

110. Calculus

Graph of f(x) = (x^3 - 5x ^2 + 6x)/(x^2 - x- 2). Can anyone please post a picture of this or something?

111. Spanish

Cuanto pagaste por esa faida?

112. algebra

in 1990, the life expectency of males in a certain counrty was 66.6 years. in 1994, it was 68.9 years. Let E represent the life expectency in year t and let t represent the number of years since 1990.

113. english-propaganda

is the CEO trying to lead or manage this change initiative?

What arguments can he use to persuade his managers?

116. electromagnatic

a) Find the forces per unit length on two long, straight and parallel conductors, if each carries a current of 10.0 A in the same direction and the separation distance is 0.20 m. b) Find the maximum torque on an 85-turn, rectangular coil, 0.2 m by 0.3 m,

117. english

Describe how to accommodate WritePoint submission and feedback time

What can he do to help his managers change their style?

119. Physical Science

A 15 Kg object that is free falling has a total mechanical energy of 13,230 Joules. (A) From what height was the object dropped? (B) What is the velocity of the object when it hits the ground? (C) How long does the object fall?

outline

121. psychology

briefly describe the developmental needs (physical,cognitive,social,emotional,cultural) at each stage of development over the lifespan

122. Algebra II

How do you find the range of this problem? y = 4^x - 5 Where do I even look for the range?

123. English

Except for the first question the others refer to an evaluation grid I need to translate into English. I really hope you can have a look at it. 1) What would you become if you were older? What will you do when you are grown up? 2) Essential (basic?)

124. pyramids

a car travels 35 km in the first 20 minutes, 43 km in the second 30 minutes and 19 km in the last 18 minutes of a trip. what is the average speed in Km/mn?

125. Criminal justice

Can someone please help. Who is responsible for the concept of crime prevention? Ive been stuck on this question for two days and i need help urgent. Thank you!

126. math

A mechanical toy on a circular track goes forward 3in. and then backwards 2in. How many MOVES does the toy take to complete one 15in. revoltion of the track?

127. algebra

the width of a rectangle is fixed at 19cm. What lengths will make the perimeter greater than 82cm? The length must be greater tha ? cm

128. algebra

graph on a number line -1

129. algebra

find slope if it exists (1,10) and (7,-5)

130. algebra

On three consecutives passes, a football team gains 6 yards, losses 11 yards , and gain 34 yards. What number represents the total net yardage? net ? yards

131. algebra

graphy y intercept y + x =-9 y intercept ?

132. english propaganda

is "War is Peace, Ignorance is Strength, Freedom is Slavery" a type of glittering generalities? please help and thank you

133. math

what are the properties of exponential function

134. math

A dice is 4cm in all sides. What if you enlarge it by 1/4. What will be the size of all its size in cm3??

135. ALGEBRA

Subtract -7.1 - (8.3)= -1.2 ? multiply (7.6)(1)(-6)=7.6 ? divide 90/18=5 ? find the reciprocal of 1/3(9-4)=3/5? subtract 7/9-(13/18=-1/18?

136. social studies

what are the three groups to frist settel in mesioamrica ( centrel amrica)

137. algebra

which would this be < or > -19 18

138. physics

How can I calculate exactly where a marble will drop if it is rolling of a table with very little friction??

139. Psychology

Pyschologists train rats to fight and scratch each other by shocking them if they are somber. How is that negative reinforcement?

Where do I look for the domain in this- The domain of y =1/(x-6) + 3 Possible answers: All real numbers except x=6 All real numbers except x = -6 All real numbers except x=3 All real numbers except x= -3 Thank you

141. Statistics

About how many participants are needed for 80% power in each of the following planned studies that will use a t test for dependent means with p < .05? Predicted Effect Size Tails (a) Medium Two (b) Large One (c) Small One

142. COMPOSITION

Missing commas,aposherphes,semi colons, colons, Capitilization,and misused words. Why are great numbers of students (student’s) choosing to pursue their college degrees (degree’s) using their home computers. (computers?) Benjamin Franklin said; A penny

143. environment

how might the environmental impact of electricity generation from coal be reduced?

144. English

How do any of the quotes below relate to the play A Street Car Named Desire by Tennessee Williams A good reputation is more valuable than money. Publilius Syrus (~100 BC), Maxims For all their strength, men were sometimes like little children. Lawana

145. re:english...help

w w w (dot) sunnyd (dot) com / # / ads i don't know does the two sunny D ads are bandwagon. i think they are because they're smiling like they like sunny d but i could be wrong. can u check to make sure is it bandwagon or not. i really appreciate it please