# Questions Asked onFebruary 22, 2014

1. ## physics

A sled (mass 310 kg) is pulled across a stone floor with a coefficient of kinetic friction of 0.9. The rope that is used to pull it is at an angle alpha of 55 degrees with the horizontal. How hard (i.e., with what magnitude force) do you need to pull to

2. ## college math HELP!!!!!

Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose

3. ## Math

Nissan Appliances bought three dozen camcorders at a cost of \$5,040. The markup on the camcorders is 30% of the selling price. What was the original selling price of each camcorder?

4. ## Chem

A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 216.0 Torr at 45.0 °C. Calculate the value of ΔH°vap for this liquid. Calculate the normal boiling point of this liquid.

5. ## Physics

Which statements about traveling waves are TRUE? Choose all that apply. a) A traveling wave transfers energy from one point to another. b) A speaker that beams its sound forward into a small area produces a louder sound. c) The rate at which a wave

6. ## Math

Gina's base pay rate is \$12.25 per hour, with overtime pay of time-and-a-half, and double-time for holidays. Calculate her gross pay if she worked 4.5 holiday hours in addition to 39 hours Monday through Saturday Is this the proper way to set it up: (12.25

7. ## statistics

a packaging device is set to fill detergent powder packets with a mean weight of 5kg.The standard deviation is known to be .01kg.these are known to drift upwards over a period of time due to machine fault which is not tolerable. A random sample of 100

8. ## Math

Lee Lu is paid \$12.50 per hour, with overtime pay of time-and-a-half for Saturday work and double time for Sunday. Calculate her gross pay if she worked 35 hours during the week, 5 hours Saturday and 3 hours Sunday.

9. ## Algebra

A basketball team recently scored a total of 95 points on a combination of 2-point field goals, 3-point field goals, and 1-point foul shots. Altogether, the team made 54 baskets and 16 more 2-pointers than foul shots. How many shots of each kind were made?

10. ## algebra

How many line segment are in the 20th.Figure answers are 80, 23, 20 60

11. ## math

Scott Stewart is the self-employed owner of Stewart Software. His estimated annual earnings are \$48,000 and he expects to pay 18% of this amount in income tax. What will be his quarterly estimated tax payment for the second quarter? (For self-employed

12. ## physics

You are driving your car over a circular-shaped bump in the road that has a radius of curvature of 75.9 m. A)If the car is traveling at a constant speed of 18.3 m/s, calculate the apparent weight of your 56.1 kg passenger as you pass over the top of the

13. ## Physics

The Lamborghini Murcielago can accelerate from 0 to 27.8 m/s (100 km/hr or 62.2 mi/hr) in a time of 3.40 seconds. How fast will the car be traveling (m/s) after 5.1 seconds.

14. ## Physics

The object in the figure has a mass of 3.45 kg and is pulled up a slope AB, which is 36 m long; the height BC is 3.00 m. There is no friction and the acceleration is constant. The speed v1 at A is 3.5 m/s whereas the speed v2 at B is 5.5 m/s. The average

15. ## Physics

A light string can support a stationary hanging load of 26.4 kg before breaking. An object of mass m = 3.19 kg attached to the string rotates on a frictionless, horizontal table in a circle of radius r = 0.795 m, and the other end of the string is held

16. ## Physics

Suppose a straight 1.60mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B⃗ , which is horizontal, perpendicular to the wire, and of magnitude 4.2×10−5T . What current would the wire

17. ## Physics

You are a general in the Napoleonic war. The battle has taken you to a trench 7m deep. You have a mortar that will fire an explosive at a speed of 200 m/s at an angle of 80. You have a low flying reconnaissance airplane scouting out the enemy troops at a

18. ## Physics

You are a general in the Napoleonic wars. An enemy fort 10m tall is located 1000m from your cannon. Your cannon expert is insisting that you will get the best results at an angle of 25 above the horizontal. Your cannon is located on a hill 10m tall. You

19. ## derivative (fg)'

This problem tests calculating new functions from old ones: From the table below calculate the quantities asked for (fg)'(–2) x 1 –17 0 –2 f(x) 3 –4335 0 0 g(x) 1 –10097 1 –17 f(x) 7 799 0 4 g(x) 3 1767 –1 27 (fg)'(–2) = ??? ty

20. ## chemistry

What is the mass of a sample of ammonia that contains 0.750 moles of hydrogen atoms? The answer is 4.26g, but I do not know how to set up the equation.

21. ## algebra

What inequality represents the sentence the product of a number and 12 is no more than 15 answers are 12n15, 12n>15line under the>, 12n

22. ## physics

A box of mass 52 kg starts from rest to slide down a ramp that makes an angle of 16.6 degrees with respect to the horizontal. 4.1 seconds later, it has covered a distance of 3.98 meters. What is the coefficient of kinetic friction?

23. ## college math HELP!!!!!

Sharon has a total of \$190,000 to invest in three types of mutual funds: growth, balanced, and income funds. Growth funds have a rate of return of 12%/year, balanced funds have a rate of return of 10%/year, and income funds have a return of 6%/year. The

24. ## college math HELP!!!!!

CalJuice Company has decided to introduce three fruit juices made from blending two or more concentrates. These juices will be packaged in 2-qt (64-oz) cartons. One carton of pineapple-orange juice requires 8 oz each of pineapple and orange juice

25. ## algebra

Name the property of real numbers illustrated by the equation2·(8·7)=(2·8)·7answers are distributive property, associative property multiplication, communicative property, associative addition

26. ## algebra

Name the property of real numbers illustrated by the equation 2·(8·7)=(2·8)·7 answers are distributive property, Associative property multiplication, Communicative property multiplication , Associative property addition

27. ## Algebra

I was asked to use factoring and the zero-product property to solve the following problems. Can you please check my answers? Thank you. z(z - 1)(z + 3) = 0 is already factored, so one of the factors must be zero for the product to be zero. Taking them in

28. ## physics

A block M1 of mass 16.5 kg sits on top of a larger block M2 of mass 26.5 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.425. The kinetic friction coefficient between the lower block and the flat

29. ## physics

A crate of mass 132 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.22. What is the smallest radius of curvature that the truck can take without the crate slipping, if the speed with

30. ## Algebra 1

A bird sitting 16 feet above the ground in an apple tree dislodges an apple. After how many seconds does the apple land on the ground? my text book gives this equation: h = -16t^2 + vt + s (t = secs, v= vertical velocity, s = initial height) so i wrote: h

31. ## Statistics

If you pick a card at random from a well shuffled deck what is the probability you will pick a face card or a spade?

32. ## college chemistry

After 94.995 seconds the concentration of A was reduced from 0.3688 M to 0.1464 M. What is the first order rate constant?

33. ## Physics

Determine the displacement of a plane that experiences uniform acceleration from 77 m/s to 110 m/s in 16 seconds.

34. ## Science

In which constellation is the Sun currently located?

35. ## Science

How will precession of the Earth's rotation axis affect the month when the Sun will be in the current constellation in the future?

36. ## chem

Radioactive substances decay by first-order kinetics. How many years would be required for a sample containing strontium-90 to decrease to 58.32% of its initial activity? The half-life of strontium-90 is 2.88e1 years.

37. ## Physics

The Lamborghini Murcielago can accelerate from 0 to 27.8 m/s (100 km/hr or 62.2 mi/hr) in a time of 3.40 seconds. How fast will the car be traveling (m/s) after 5.1 seconds.

38. ## APA Format

How should I input a sub-heading in APA format? For example: Community Core (centered/bold) Demographics of community (left aligned/indented/not bold)

39. ## physics

A block with mass m = 24.0 kg slides down an inclined plane of slope angle 41.4 ° with a constant velocity. It is then projected up the same plane with an initial speed 3.80 m/s. How far up the incline will the block move before coming to rest?

40. ## College math HELP!!!!!

A financier plans to invest up to \$450,000 in two projects. Project A yields a return of 10% on the investment, whereas Project B yields a return of 15% on the investment. Because the investment in Project B is riskier than the investment in Project A, the

41. ## ela

in chapter 9 site specific examples ex: ms.maudie is thoughtful of other "only thing i worried about...was all the danger and commotion it caused... this whole neighborhood could have gone up." i did all of them except these please help atticus tie racism

42. ## math

use the digits 3,5,9,4 only once to make 2 addends whose sum is between 100 and 110

43. ## science

What is a mountains origin?

44. ## Math

How can you solve this inequality using an algebraic method. -x^3+2x^2+4x-8 > or equal to 0 (x-2)(-x+2)(x+2) > or equal to 0

45. ## algebra

Me.Sue there are 3boxes 1 box has 1 triangle in 2box has 2triangle 3box has 3triangle how many line segment are in the 20th.Figure answers are 20,80,23,60,

46. ## Psychology

According to the psychodynamic approach, the main goal of personality assessment is to: my answer is A a. Understand how situations influence the individual's behavior. b. Illuminate unconscious motives and psychic conflicts. c. Help determine the

47. ## Math

the formula R= -0.75t +3.85 can be used to predict the world record in the 1500 meter run, t years after 1930. Determine an inequality that identifies the years in which the world record will be less than 2.8 minutes.

48. ## algebra

Solve the inequality graph the solution set 26+6b>2(3b+4) answers are all real numbers, b1 1/2,, no solution

49. ## algebra

Solve the inequality graph the solution set 26+6b>2(3b+4) answers are all real numbers, b1 1/2,, no solution

50. ## Psychology

In the Rorschach test, the interviewee is asked to: Answer a. Create an inkblot. b. Report everything that an inkblot could resemble or look like. c. Create a spontaneous story based on an inkblot. d. Describe his or her emotional reactions to an inkblot.

51. ## Psychology

When unconscious defenses block access to certain material during free association, what is said to occur? a. Repression. b. Resistance. c. Suppression. d. Blocking. e. Blunting.

52. ## Psychology

The motives studied by Henry Murray and his colleagues are called higher order motives because: Answer a. They reflect motivations for a higher level of functioning. b. They are at a higher level of consciousness than other motives. c. They do not reflect

53. ## algebra

Is the inequality sometimes always never true-2(2x+9)>-4 x+9

54. ## math

A school spent \$1,802 on 6 new microscopes for science classes. Each microscope cost the same amount of money. Find the cost of 1 microscope. Show your work.

55. ## science

Two forces of 5 N and 12 N respectivlely act on the same point. Show how to determine the magnitude of the resultant by using the tail to head and tail to tail methods and pythagoras theorem.

56. ## Linear Algebra

Vector in Space-Directions and Magnitudes Let a, b, c, d, e, & f be vectors such that =6, =6, =-4, =7, b+c=d, -8a+8b=e, -4b+2c+f compute the following inner product: =__ =__ =__ =__

57. ## Biology

5 reasons why conservation of natural resources are important

58. ## Physics

You and some friends go bungee jumping, but you are afraid of oscillations which go too fast. Which one of these options would provide the slower oscillations? a) Tying two bungee cords to your feet such that each bungee cord is attached to your feet and

59. ## Social Studies

Was the War Guilt Clause part of the Treaty of Versailles?

60. ## Math

Look at NAwaf ,,math. Where is the answer?

61. ## Psychology

The motives studied by Henry Murray and his colleagues are called higher order motives because: Answer a. They reflect motivations for a higher level of functioning. b. They are at a higher level of consciousness than other motives. c. They do not reflect

62. ## math

Juanita is the self-employed owner of Juanita's Linens. Her estimated annual earnings are \$73,040 and she expects to pay 27% of this amount in income tax. What will be her quarterly estimated tax payment for the third quarter? (For self-employed persons,

63. ## English Comp

What does Rhetorical or Rhetorical stance mean?

1- Is it ethical to admit more students in the university dorm that it couldn't house them comfortably ?

65. ## algebra

Use properties of real numbers to rewrite expression(3/5)(5/3)answers are 8/15,, 15/8,, 0, 1

66. ## math

On the first day he runs 1.5 km. Every day he runs 10% more than the day befor. a) Write down the distance he runs on the second day of training. ..... 1,5km +0,15 = 1,65 km b) Calculate the total distance He runs in the first seven days of training. When

67. ## physics

calculate the final volume of gas if the original pressure of gas at STP is doubled and its temperature is 3 times.

Juanita is the self-employed owner of Juanita's Linens. Her estimated annual earnings are \$73,040 and she expects to pay 27% of this amount in income tax. What will be her quarterly estimated tax payment for the third quarter? (For self-employed persons,

69. ## Physics

A man driving his car into 20.0 ft garage with a velocity of 20.0mi/h applies the brakes, producing a constant deceleration. Find the smallest deceleration necessary to avoid striking the back wall of the garage. And find how many seconds it takes for the

70. ## algebra

Identify the pattern and find the next number in the pattern-48,-24,-12,-6 answers are -3, 0, 2, 3

71. ## Algebra 1

I need to factor the expression t^2 + 4tv + 4v^2 I got this answer: (t + 2v)(t + 2v) Check my work? Thanks!

72. ## Algebra 1

I need to factor the expression z^2 + 15z - 54 I think it's either (z - 9)(z + 6) OR (z - 6)(z + 9) Can you help me out? Thanks!

73. ## U.S. History

1. Explain how the United States contributed to the Allied war effort during World War I. 2. Discuss the role America played in determining the outcome of the conflict.

74. ## Math

There are boxes without tops. Find the box with the least surface area for a given volume, V. Make a diagram (if you can). Hint: Volume=x^2y Area=x^2+4xy

75. ## ENG1511

Why is 'first' in the first sentence of paragraph 8 in inverted comas?

76. ## Algebra 1

Could you maybe walk me through this Algebra word problem? Here is the problem: Anita wants to put a moat around her rectangular castle. The castle is 45 ft by 60 ft. Let m be the width of the moat. 1. Write a polynomial that represents the total area of

77. ## math

if the insurance paid on the contents of a house is 33.60 pounds, at the rate of 4pounds per thousand pounds worth. What are the house contents worth?

78. ## Algebra 1

A kicker punts a football from 3 feet above the ground with an initial velocity of 47 feet per second. 1. Write an equation that gives the height (in feet) of the football as a function of the time (in secs) since it was punted. Okay. According to my text

79. ## math

A store finds out that 5 out of every 9 customers prefer new extra crunch peanut butter. If the store sells 90,000 jars or regular peanut butter, how many jars of new x crunch should it produce ,and how many of regular should it produce ? Have no idea how

80. ## physics

A string under a tension of 42.6 N is used to whirl a rock in a horizontal circle of radius 2.47 m at a speed of 19.7 m/s. The string is pulled in and the speed of the rock increases. When the string is 1.13 m long and the speed of the rock is 46.9 m/s,

81. ## algebra

Solve the equation 3y+20=3+2y answers are -1/17, 7 2/3, 23 -17

82. ## Math

mike spends 2/3 of his time studying. on tuesday spends 1/6 of his time studying for his science test. what is the value of the combine time Mike studied for his science test?

83. ## biology

complexity of asexual and sexual

84. ## Algebra

Eye color is determined by genetic combination. Let R represent the gene for brown eyes and l represent the gene for blue eyes. Any gene combination including R represents browns eyes. Consider the offspring of a parents with homozygous brown-eyed, RR,

85. ## math

if the insurance paid on the contents of a house is 33.60 pounds, at the rate of 4pounds per thousand pounds worth. What are the house contents worth?

86. ## physics

A professor drives off with his car (mass 850 kg), but forgot to take his coffee mug (mass 0.39 kg) off the roof. The coefficient of static friction between the mug and the roof is 0.7, and the coefficient of kinetic friction is 0.4. What is the maximum

87. ## History

How should I start my reaction essay off? I looked up examples online and most sources say to state the title and the author but I'm not sure how to "form" the first paragraph. This is what I have so far.. After reading the article Survivors, I felt

88. ## Math

Which term can be put in the blank to make the statement below true? 4,000,000=40 A. Thousands B. Ten-Thousands C. Hundred-thousands D. Millions

89. ## rutgers

how do you get a standard deviation of 1.04563 when the sum of x=238, n=25 and the mean is 9.52

91. ## Probability

I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither

92. ## Probability

The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the

93. ## alg 2

Use the definitions and theorems of this section to evaluate and simplify the following expression. Be sure to express answers with positive exponents. (m . n)-1 =

94. ## Math

Solve the mathematical expression. Show your work. 72-5(13+2)*5=

95. ## physics

You are driving your car over a circular-shaped bump in the road that has a radius of curvature of 75.9 m. A)If the car is traveling at a constant speed of 18.3 m/s, calculate the apparent weight of your 56.1 kg passenger as you pass over the top of the

96. ## college chem

Determine the rate of consumption of I− if the initial concentration of IO3− was 0.6634 M and decreased to 0.5745 M after 0.3964 hours. Use the reaction below. IO3− + 5I− + 6H+ ↔ 3I2 + 3H2O

97. ## physics

A block weighing 71.5 N rests on a plane inclined at 24.1° to the horizontal. The coefficient of the static and kinetic frictions are 0.26 and 0.13 respectively. What is the minimum magnitude of the force F, parallel to the plane, that will prevent the

98. ## Math

What is the value of the digit 6 in 683,607 than the value of the digit 6 in 462,601?

99. ## Math

sally bakes two cakes, a square and a circle. the length of the side of the square cakes is 8 inches. find the perimeter of the cake (the cake is in the shape of hearth )

100. ## U.S. History

1. Explain how the United States contributed to the Allied war effort during World War I. 2. Discuss the role America played in determining the outcome of the conflict.

101. ## physics

How to calculate the force required to move a 6.12Kg weight up a 10degree friction rig? I have done experiments on the friction rig, adding weight until the sliding weight moved, but the calculated results do not match up. Can anyone help?

102. ## Math

What is the value of the digit 6 in 683,607 than the value of the digit 6 in 462,601? I see two 6's in each number. Which are you asking about? That's the question. It doesn't specify the place value. Here are the choices: A. 10 times B. 100 times C. 1,000

103. ## math

Karen and Wayne need to buy a refrigerator because theirs just broke. Unfortunately, their savings account is depleted, and they will need to borrow money in order to buy a new one. Sears offers them an installment loan at 13% (add-on rate). If the

104. ## Algebra

The sum of two numbers is 3. Four times the larger number plus three times the smaller number is 25. Find the numbers. The larger number is___? and the smaller number is___?

105. ## ENG1511

paraphrase the sentence, '' To cut a long story short, one day i decided to be a man about my feelings.''

106. ## Chemistry

A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)

107. ## Probability

The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6. Calculate the

108. ## Math :Probability

I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither

109. ## com 200

According to researchers, which of the following is NOT a condition of forming a friendship?

110. ## Math

Seyla raced her horse 3 times around a circular track with a radius of 180 yards. How many yards did they travel?

111. ## Math

Use the function tables to solve the problems. Table :2 Input ( Number of Pies Sold). Output( cost) 1. \$ 12.65 2 3 \$ 37.95 4 What is the rule for Table 2 ? What are the missing output entries in Table 2? 2/ following the same rule set in Table 2 , what

112. ## Algebra

Solve the following system of equations by the elimination method. 1/3x+1/4y=7 1/3x-3/4y=-9 a)The solution is___?(Type an ordered pair. Use integers or fractions for any numbers in the expression) b)Infinitely many solutions c)No solution

113. ## physics

A missile is launched at an angle of 25 degrees to the ground. It hits a target at 301.5 meters from the point of launch. find the initial velocity

114. ## Physics

Find the uniform acceleration that causes's a car's velocity to change from 39.7 m/s to 74.0 m/s in an 5 second period of time.

115. ## Physics

A car with a velocity of 28.2 m/s is accelerated uniformly at the rate of 2.2 m/s2 for 9 seconds. What is the car's final velocity?

116. ## chemistry

How would you prepare a solution of about 8mg/100ml of ascorbic acid in water (25ml)? I'm not sure if they mean to use that ratio of ascorbic acid in water to make a 25 ml solution or if the wording means something else.

117. ## Physics

Suppose you are a general in the Napoleonic wars. You are no top of a plain 50 m high overlooking the enemy soldiers. You now have a brand new cannon that will decimate the enemy. Unfortunately in the christening process you used some rather cheap grade

118. ## Physics

You are general in the Napoleonic wars. You are on top of a plain 12m talk and you have a cannon that can shoot a cannonball out at 350 m/s. 800 m away is a thick forest that you cannot see into but one of your scouts in a hot air balloon has just signaled

119. ## chemistry

If a satellite orbits the earth at a velocity of 2.9 x 103 km/hr, this would be the same as how many in/sec?

120. ## Algebra

Solve using the appropriate method. 0.05x+0.25y=66 0.15x+0.05y=72 I came up with the answer (420,180) Is this correct? a)The solution is___?(simplify your answer. Use integers or fractions for any numbers in the expression. Type an ordered pair)

121. ## chemistry

A room contains 48 kg of air. How many KWh of energy are necessary to heat the air in the house from 7oC to 28oC? The heat capacity of air is 1.03 J/goC

122. ## Math

I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails. 7 mice are male but neither

123. ## Math

Find the LCM of: 72 and 99 72 and 54