# Questions Asked onApril 12, 2013

1. ## PHYSICS/MATH

A mass and spring are arranged on a horizontal, frictionless table. The spring constant is k = 450 N/m, and the mass is 5.4 kg. The block is pushed against the spring so that the spring is compressed an amount 0.35 m, and then it is released. Find the

2. ## calculus

Find the volume of the solid generated by revolving the region about the given line. The region in the second quadrant bounded above by the curve y = 16 - x2, below by the x-axis, and on the right by the y-axis, about the line x = 1 I have gathered, that

3. ## math

A student says that the solution of 375 = x – 28 is 347. Explain the student’s error and find the correct answer

4. ## Chemistry

Calculate E°cell (in volts) for a fuel cell that employs the reaction between methane gas and oxygen to form carbon dioxide and water. (to 4 significant figures) ∆G⁰f for CH4 = -50.5 kJ/mol ∆G⁰f for CO2 = -394.4 kJ/mol F = 96485/mol e- I got

5. ## Applied Calculus

Find the absolute extrema of the function on the interval [2,3]. (Round your answers to the nearest hundredth.) Absolute Minimum ___ at x=___ Absolute Maximum ___ at x=___

6. ## Pre-calculus HELP PLEASE !

Find the coordinates of the center of the ellipse represented by 4x^2 + 9y^2 – 18y – 27 = 0. For 2x^2 + xy + 2y^2 = 1, find , the angle of rotation about the origin, to the nearest degree. Find the distance between points at (–1, 6) and (5, –2).

7. ## Psychology

Good day , please can you assist me with answering the following questions. There is a short paragraph describing a young man who has OCD symptoms. the questions are as follows "According to the DSM -IV diagnostic categories what diagnosis might you give

8. ## trig

an airplane has an airspeed of 430 miles per hour at a bearing of 135 degrees. the wind velocity is 35 miles per hour in the direction N30degreesE. Find the resultant speed and direction of the plane.

9. ## Statistics

The lifetime of computer chips is approximately normal with mean 1.4×106 hours and standard deviation 3×105 hours. The statistics department has 5 computers built with that chip as the main component. What is the probability that all 5 computers last

10. ## Psychology

Behavioral geneticists and evolutionary psychologists emphasize: A. environmental influence on development. B. the role of personality in development. C. the significance of hereditary factors in development. D. the importance of parenting skills in

11. ## Psychology

According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

12. ## Psychology

Danette knows she is not at all like her parents. She could never be like them. She is her own unique person. Her style of dress, mannerisms, and language emphasize her uniqueness. According to Erkison, Danette is attempting to establish: A. permanence. B.

13. ## ece

Studies of children throwing have revealed that two- and three-year-olds A. throw while stepping forward with the opposite foot. B. throw with body rotation and full arm range. C. are unable to throw a ball of any size. D. throw mainly with their forearms,

14. ## Chemistry

Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

15. ## Psychology

The means of travel within and between neurons is different because: A. electrical signals move impulses within the neuron, while chemical signals move the impulses between neurons. B. chemical signals move the impulses within the neuron, while electrical

16. ## Psychology

Information which comes to a neuron must arrive through its: A. axons. B. glial cells. C. prefrontal area. D. dendrites. I believe it is D..

17. ## PHYSICS! I CAN NOT GET

A group of swimmers is resting in the sun on an off-shore raft. They estimate that 2.5 m separates a trough and an adjacent crest of surface waves on the lake. They count 15 crests that pass by the raft in 15 s. How fast are the waves moving? ____m/s (I

18. ## Psychology

According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

19. ## Psychology

According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

20. ## Psychology

Behavioral geneticists and evolutionary psychologists emphasize: A. environmental influence on development. B. the role of personality in development. C. the significance of hereditary factors in development. D. the importance of parenting skills in

21. ## Psychology

Four weeks from conception, cell division: A. begins to slow down. B. has resulted in an embryo which is 10,000 times larges than the zygote. C. creates a zygote. D. moves to the fetal period. I believe it is B

22. ## Psychology

__________ serve as the cytoskeleton of the brain. They support the function of neurons by insulating, repairing, and nourishing them. A. Glial cells B. Dendrites C. Axons D. Cell bodies i say it A

23. ## Life Orientation

Identify one environmental or human factor that causes ill health,accidents,crises and disasters within any community within South Africa.

24. ## ece

When a child is assessed as being able to give a possession to someone else, the teacher would record that the child has achieved the prosocial behavior of A. empathy. B. caregiving. C. generosity. D. cooperation

25. ## ece

On the Child Development Checklist, you've checked the item "Spends time watching others at play" for a preschool child in your group. Which of the following is the most likely reason for the child's behavior? A. The child needs the teacher's help to get

26. ## Maths-trig

Prov that 1-sin2X/sinX-cosX=sinX-cosX

27. ## Chemistry

An unknown amount of gas occupies 30.0 L at 2.1 atm and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?

28. ## Biology

Consider this pathway: signaling ligand ¨ G protein-coupled receptor ¨ G protein ¨ adenylyl cyclase ¨ cAMP. Identify the second messenger. Answer: A)G protein B)GTP C)adenylyl cyclase D)cAMP

29. ## algebra :( help me!!

The table below shows the weekly earnings of two groups of employees working part-time at a local grocery store. GROUP A: \$245, \$224, \$218, \$295, \$214, \$312, \$284 GROUP B: \$223, \$230, \$310, \$246, \$295, \$301, \$215 PART A: What is the mean for each group?

30. ## personal

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

31. ## interpersonal communication

Self-concept is changed through interpersonal communication

32. ## Math

Help please! I would greatly appreciate it! Sarah is making pillows. She uses 2 1/3 yards of fabric to make 5 pillows. How many yards of fabric will Sarah use to make 20 pillows? A. 6 1/3 yd B. 9 1/3 yd C. 17 1/3 yd D. 42 6/7 yd P.S. Thanks!

33. ## chemistry

Which of these processes will lower the glass transition temperature of a glass? Increase the cooling rate, Decrease the cooling rate, Increase amount of network modifier, Decrease amount of network modifier, Quench the glass to cool the surfaces quickly,

34. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation P(x) = 100e^-0.001x f or 0 _< x _< 20,000. a. Find the revenue function, R. (Hint: R(x) = x(p(x)), since the

35. ## Physics

Consider a regular pyramid charged with constant volume charge density. The potential at point P, the top of the pyramid is 1V. What would be the potential at point P if we removed the top part, so the pyramid is instead truncated at a height h=0.6H? Hint:

36. ## Psychology

Dr. Lange is a developmental psychologist. He specialized in cognitive development during the period of infancy. Like most psychologists who focus on specific periods of development, his studies: A. emphasize the chemical changes in the synaptic gap. B.

37. ## chemistry

Consider two glasses. Glass A has a composition of 5% CaO - 95% B2O3. Glass B has a composition of 15% CaO - 85% B2O3. Both samples are cooled from their molten state to room temperature at rates that result in an identical glass transition temperature.

1. Density is the relationship between ____. (1 point) mass and volume cubic centimeters and pounds weight and volume grams and mass 2. Which of the following is NOT a possible sign of a chemical change? (1 point) a change in state a change in color the

39. ## chemistry

What is the difference between e/z notation and cis-trans isomerism?

40. ## Physics

A small steel sphere of mass 0.40 kg is attached by a 0.50 m long cord to a swivel pin set into the surface of a frictionless table top. The sphere moves in a circle on the horizontal surface with a speed of 6.0 m/s. a.) what is the magnitude of the

41. ## english

4. Identify what is wrong with the following sentence: “Not realizing that there was a hole in the tire”. Then, revise the sentence in order to correct the problem and discuss the changes you have made.

42. ## Calculus

Estimate the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles. b. Sketch for yourself the graph of f and the rectangles. Is this left sum an overestimate or underestimate? Enter OVER or UNDER. c. Now use 5 right rectangles to

43. ## Chemistry

Consider the equilibrium 2NO (g) 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in

44. ## math

solving with elimination 7x-4y=13 2x-5y =-4

45. ## math

solving with elimination 7x-4y=13 2x-5y =-4

Raj and Vikram are two travelers in ancient India, walking along the Silk road. On the first day of travel, Raj travels 5 yojanas, and on each successive day travels 3 yojanas more than the previous day. Vikram started at the same place and travels the

47. ## math

solving with elimination 7x-4y=13 2x-5y =-4

48. ## math

how to solve this problem ln(x-4)=-3

I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer

50. ## Life Orientation

Identify 5 ways in which environmental or ill health factor impacts on community

51. ## child daycare

1. A _______-centered program is most helpful to the children served. A. family B. child C. school D. parent 2. The vision and goals of an afterschool program should be translated into a A. preprietorship. B. parent letter. C. newsletter. D. mission

52. ## Calculus

Use the Evaluation Theorem to find the exact value of the integral ç^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.

53. ## PHYSICS/MATH

What is your average power if you lift a 33.8 kg box at a constant speed to a height of 3.27 m in 6.10 s?

54. ## U.S/history AP

The War of 1812-also called the second war of American Independence or by opponents the dersive (----).U.S.declared war on Britain because they did not recognize our neutrality and interfered with our freedom of the(-----)shipping My answers are: --GREAT

55. ## physics

A technician at the top of a 200m tall radio tower drops her hammer. how much time does it take for the hammer to strike the ground?

56. ## english

WRITE the adverb form that correctly completes the sentence. Hawks resemble falcons (close) of all birds.

57. ## math

how to go by doing a personal cash flow statement is it like the regular budgetfor your house.

58. ## physics

Compare the total magnetic energy in two solenoids, each with N turns, area A, and current I, but length x and 2x. Denote Ux the total magnetic energy in the solenoid with length x, and U2x the one in the solenoid with length 2x. What is U2x/Ux?

59. ## Math

Jeff earns 1200 per week and has 4 deductions what is his net pay

60. ## Science

A car weighing 24,500 Newtons is traveling east and travels a distance of 100 meters in 20 seconds. What is the car's mass? What is the car's kinetic energy?

61. ## physics

Consider the process of charging a parallel plate capacitor with circular plates of radius R=5 cm separated by a distance d=0.2 cm. At some time t1, the capacitor is being charged with a current I=0.075 A. Consider a point P on the plane which is equally

62. ## physics

Consider a circuit with an RL series with L=0.09 H and R=0.05 Ohm. At t=0 the circuit is connected to a battery which provides V0=12 V. (a)How long does it take to the current to equal a fraction 0.95 of the steady state current? (b) What is the energy

63. ## physics

A coil consists of N=105 turns of wire wrapped uniformly around a plastic torus. The inside radius of the torus is r0=0.12 m and the outer radius is r1=0.14 m. Thus, each winding has a diameter d=0.02 m. What is the self-inductance (in H) of this coil?

64. ## Math

Lisa borrowed 8,000 on an 8% , 60 day note after 15 days she paid 2,000 on the note on day 45 she paid 1,000 on the note what is the total interest and ending balance due by the us rule of ordinary interest.

65. ## ece

It's difficult for a young child to experience true empathy until he or she A. reaches the age of 8. B. is able to see things from another person's perspective. C. has been taught about it by his parents. D. has experienced difficulties himself.

66. ## problem solving

ou are completing the final exam in your class. Your instructor’s assignment instructions state that you may only use the following resources: library books, class notes, texts, and the instructor. You and your roommate discussed one of the questions,

67. ## maths- urgent

show that √Π+1 is irrational if there is any proof

68. ## physical science

How much energy is stored in a 9V battery rated at 10 A hour?

69. ## Thermodynamics

Suppose you start with a liquid mixture of 60% nitrogen and 40% oxygen. Describe what happens as the temperature of this mixture increases. Be sure to give the temperatures and compositions at which boiling begins and ends.

70. ## algebra

(1)√x-a/x-b + a/b = √x-b/x-a + b/a, b not equal to a, then value of x is (2) if x = 2√24/√3+√2 then value of x+√8/x-√8 + x+√12/x-√12 . (3) if a = 2+√3/2-√3 & b = 2-√3/2+√3 then value of (a square + b square + ab) =

71. ## Chemistry

Using the given boiling points, predict which compound has the higher vapor pressure at a given temperature. A. ethanol (C2H6O, bp 78 degrees C) or 1-propanol (C3H8O, bp 97 degrees C) B. hexane (C6H14, bp 69 degrees C) or octane (C8H18, bp 125 degrees C)

72. ## Chemistry

If N2 is added to a balloon that contains O2 (partial pressure 450 mm Hg) and CO2 (partial pressure 150 mm Hg) to give a total pressure of 850 mm Hg, what is the partial pressure of each gas in the final mixture?

73. ## Pre-Calc

How do I solve this via partial fraction decomposition? (x^2+9)/(x^4-2x^2-8)

74. ## Calculus

An animal population is increasing at a rate of 150+20t animals per year. By how much does the animal population increase between year 5 and year 8?

75. ## maths- urgent

what is the value of sin18degree-sin66degree+(root3/2)

76. ## Chemistry

How many grams of NaF should be added to 612 ml of 0.4 M HF (Ka = 6.8 x 10-4) to produce a buffer solution where pH = 3.10?

77. ## environmental science

is plastic use is more hazarduous or wood use in relation to their environmental impacts? kindly give me a detailed answer

78. ## Chemistry

Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

79. ## Chemistry

Potassium hypobromite, KOBr, converts ammonia to nitrogen by the following reaction. 3KOBr + 2NH3 N2 + 3KBr + 3H2O To prepare 448.2 mL of dry N2, when measured at 22.3 °C and 777.3 torr, what is the minimum number of grams of KOBr required?

80. ## Algebra

In 2000, in Country A, the average family net worth was \$410,000, and there was about 6.1 x 10^7 families. Calculate the total family net worth Country A in 2000. Country A's total family net worth is what in dollars?

81. ## chemistry

A student needs to use a 0.750 mol sample of (NH4)2SO3 for an experiment: a. how many grams does she need to weigh out? b. how many formula units are in the sample?

Key: ☺ = My Answer! 1. The thermal energy of an object is _____. its potential energy its average kinetic energy ☺ its potential energy minus its kinetic energy its kinetic energy plus its potential energy 2. A device that can be used both for cooling

83. ## chemistry

A sample of hematite Fe2O3 has the mass 4.83 x 10 3 kg. a. how much iron (kg) can be extracted from this sample of hematite? b. what is the percentage of iron in this ore?

84. ## Chemisty

Before solving the problem write a balanced chemical equation Excess aqueous NaI was added to 50 mL of aqueous CuNO3 solution, and 14.2 g of CuI precipitate was formed. What was the molar concentration of CuNO3 in the original solution? Answer in units of

85. ## chemistry

Monosodium glutamate (aka MSG) NaC5H8NO4 is used as a food additive for flavor or as a preservative. a. what is the mass of MSG (g) that contains 545 mg sodium? b. calculate the percentage of each element present in MSG.

86. ## Calculus

Estimate the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?

87. ## Calculus

Use 5 right rectangles to estimate the area of the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?

88. ## maths-

if n is an odd positive integer, then prove that n^2 -1 is divisible by 8

90. ## computer programing

Car A, with a mass of 1250 kg, is traveling at 30 m/s to the east. A truck with mass of 2000 kg, traveling to the west at 25 m/s. An inelastic collision occurred, not sticking together, the car goes off 10 m/s to the west. What is the resulting velocity of

91. ## Maths

Triangle ABC has lengths AB=14, AC=18 and also a given angle of ∠BAC=30∘. What is the area of triangle ABC?

92. ## Stats

A game is played where a biased coin is flipped. A head is twice as likely as a tail. It costs \$5 to plat the game and if a head occurs you win &7 but if a tail occurs you pay \$3 which of the following is correct? The game is fair The expected valve of net

93. ## Maths

In triangle ABC, D is the midpoint of AC and E is the midpoint of AB. BD and CE are perpendicular to each other and intersect at the point G. If AB=7 and AC=9, what is the value of BC^2?

94. ## College Chemistry

For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter. Be careful of the algebraic sign here and remember that the change in temperature is equal to the final temperature minus the initial temperature. Report your answer using 4

95. ## maths

Find the number of positive integers

Find the coordinates of the center of the ellipse represented by 4x^2 + 9y^2 – 18y – 27 = 0. For 2x^2 + xy + 2y^2 = 1, find , the angle of rotation about the origin, to the nearest degree. Find the distance between points at (–1, 6) and (5, –2).

97. ## HELP URGENT Phyiics

What mass (in grams) of steam at 100°C must be mixed with 446 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and

98. ## maths- plseee urgently

value of sin18degree-sin66degree+sin60 degree

99. ## life orientation

3 environmental health hazards that cause ill health,crises,and or disasters globally

100. ## LIfe Orientation

critically discuss 8 ways in which the environmental problem impact on the within your country with South Africa

101. ## LIfe Orientation

suggest 5 recommendation on how to address the air pollution

102. ## LIfe Orientation

what recommendations can I address on the air pollution

103. ## Honors Math

Please help! Malia incorrectly graph the equation y=2/3x+12 with a slope of 3/2. What should malia's corrected graph look like? The answers can be: A. Vertical B. Horizontal C. Less Steep D. More Steep P.S. The / doesn't mean divide in this equation. It is

104. ## English

Having problems with a introductory sentence. Its a essay on dying and living. I wrote a question to start my intro. Sentence. Or I wrote The professor died in 1974 of Cancer. Someone please let me know if I started out right. Please

105. ## car!

Which one of these statements is true about a "bumper-to-bumper" warranty. A. Normal wear and tear is NOT covered by the warranty. B. All expenses except gasoline and routine oil changes are covered by the warranty. C. Every part and system is covered

106. ## Phyics

In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped into a

107. ## maths

There is an auction for a house, with a List Price of \$100K. There are only two bidders, who bid randomly, one after another. Their bids are in the \$0 to \$100K range. They don’t know what the other person bid (even if they did, it wouldn’t matter cause

108. ## HELP Physics

The average rate at which energy is conducted outward through the ground surface in a certain region is 30.9 mW/m2, and the average thermal conductivity of the near-surface rocks is 3.11 W/m·K. Assuming a surface temperature of 9.48°C, find the

109. ## Math

Help if you can! Thanks! Appreciate it! The length of one side of a square is approximately 181 inches. Which could be the length of one side of the square? A. 13.5 inches B. 19 inches C. 90.5 inches D. 109 inches

110. ## science

using the punnet square one trait is Dd and the other id dd. 1) does the mother or father in a have dimples b) what percentage of children are likely to have dimples i think for a: it is the father because of the D so that it dominant and b:50 because two

111. ## physics

A bead of mass m = 40.5 kg is released from point A which is located 5 m above the ground and slides on the frictionless track as shown in the figure. Determine the beads speed when it reaches point C which is located 2.0 m above the ground.

112. ## Calculus

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+ãt/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of

113. ## Physics

During a free kick at a soccer playoff game a 0.7 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 39.8 J. How fast was the ball booted by the player on the field?

114. ## L>O

provide recommendation on how to address the topic that you identified in the previous question(HIV and AIDS)

115. ## Calculus

Find the equation of the line tangent to F(x) = xe^-x at the point where x = 0. What does this tell you about the behavior of the graph when x = 0?

116. ## chemistry

A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens approximately the size and shape of credit cards are soaked for the same amount of time at 850degreeC. Sample A is soaked in NaCl

117. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation P(x) = 100e^-0.001x f or 0 _< x _< 20,000. a. Find the revenue function, R. (Hint: R(x) = x(p(x)), since the

118. ## Math

Please help if you will! (-5)x7-6+8 A. -49 B. -45 C. -33 D. -25 P.s. Thanks for the help!

119. ## science need help

using the punnet square one trait is Dd and the other is dd. 1) does the mother or father in a have dimples b) what percentage of children are likely to have dimples i think for a: it is the father because of the D so that it dominant and b:50 because two

120. ## maths

if n is any integer ,then in is (a) i,(b) 1,-1 (c) i,-i (d) 1,-1,i,-i

121. ## Math

Needing help! Oliver made a pizza that was the same size as the pizza pan he used. The area of the pizza pan was 16(pie sign) square inches. What will be the circumference, in inches, of his pizza? A. 4 (pie sign) inches B. 8 (pie sign) inches C. 16 (pie

122. ## Calculus

Find the derivative for the following: a. y = x^2 e^x b. y = (e^x + 2)^3/2 c. y = e^-3x d. y = (e^x-e^-x)/2

123. ## chemistry

Which of the following statements describes why ion exchange of 99% SiO2 - 1% B2O3 in a salt bath of molten postassium chloride (KCl) is not an effective way to increase the surface strength of the glass sample? a -The ion exchange works correctly, however

124. ## algebra

(1)√x-a/x-b + a/b = √x-b/x-a + b/a, b not equal to a, then value of x is (2) if x = 2√24/√3+√2 then value of x+√8/x-√8 + x+√12/x-√12 . (3) if a = 2+√3/2-√3 & b = 2-√3/2+√3 then value of (a square + b square + ab) =

125. ## ap chemistry

The volume of 0.100 mol of helium gas at 34°C is increased isothermally from 1.00 L to 4.50 L. Assuming the gas to be ideal, calculate the entropy change for the process.

126. ## Calculus

Find the volume using the shell method - about the x-axis x=y^2/3

127. ## chemistry

Please mark below all of the statments that correctly describe the physical properties of glass. Glasses do not have slip systems.Glasses consist of both covalent and ionic bonding.Glasses are brittle at room temperature.Glasses are amorphous and have no

128. ## Calculus

The velocity of an object t seconds after it started moving is t(t-6). Find the total change in the object's position in the 6th second.

129. ## math

Problem #1: Find the total amount if you deposit \$500 at a rate of 5% for two years using simple interest. Year 1 Year 2 Problem #2: Find the total amount if you deposit \$300 at a rate of 6% for three years using simple interest. Year 1 Year 2 Year 3

130. ## Physics :(( help please TT

You are a maker of hot air balloons and wish to construct a balloon that will lift you and a friend to places unknown. Your standard balloon design is a perfectly spherical, nylon fabric balloon with a small hole on the bottom for the burner that heats the

131. ## U.S/history AP

The Revolutionary war- began with the battle of Lexintgton and Concord in 1775 and ended in the year 1783 with the signing of the treaty of paris .American troops were commanded by-----------. my answer: George Washington right?

132. ## Biology

The body of multicellular animals (salamanders, frogs and so on) is made of more than hundred different kinds of somatic cells. Even though they’re so different, they all have the same genome (the same DNA, the same set of genes). This is called genomic

133. ## Maths

Let N=1!⋅2!⋅3!⋅4!…9!⋅10!. Let 2^k be the largest power of 2 that divides N. What is the value of k?

134. ## Biology

Humans have about 20,000 genes in our genome. Explain how cells differentiate into different kinds of cells even though they have the same set of 20,000 genes in their nuclei, so they are genetically identical.

135. ## Maths

Two players each flip a fair coin. The probability that they get the same result can be expressed as ab where a and b are coprime positive integers. What is the value of a+b? Dont get the a+b :(

136. ## Spanish

4. Fill in the blank with a correct expression with tener to express the following. She is hot. Ella ________. Answer: ella tienen calor 5. Fill in the blank with a correct expression with tener to express the following. She is cold. Ella ________. Answer:

137. ## Science 8

Kinetic energy increases as a. mass increases and velocity decreases b. mass decreases and velocity increases c. both mass and velocity increase d. both mass and velocity decrease

138. ## U.S/history AP

The french and indian war began in the colonies in the year 1754 and ended in the year 1763 in the colonies,the main reason for conflict between the french and colonists was over the Ohio river valley.After this war the english began the practice of --

139. ## physics

Just wanted to say a quick thanks to Steve and Damon, figured it all out, thanks guys, awsome!!!

140. ## math

I have a box of tiles 12" x 12" - how many tiles will I need for a 9 foot x 12 foot room?

141. ## physical geography

given the temperature of 27 degrees celsius on a climograph was is the averge monthly prepicipation 24.4 cm

142. ## physics

A boat is traveling on a bearing of 25 degrees East of North at a speed of 4 knots (a knot is 1.852 km/h). After traveling for 3 hours, the boats heading is changed to due South and it travels for an additional 2 hours at 5 knots. Using a Vector diagram,

I need help on the following please? A group of clowns performs in a ring with an area of about 2,123 square feet. What is the circumference of the ring? Choose the closest answer. 156 ft. 52 ft. 163 ft. 82 ft. Thank You. Please explain the answer

144. ## Chemistry

The pH of an 0.0870 M solution of weak acid A is 2.20. The pH of an 0.0830 M solution of weak acid B is 4.07. The pH of an 0.0890 M solution of weak acid C is 5.13. Identify the three acids from among those listed below (the Ka values are listed in

145. ## U.S/history AP

-----------the act of bringing land into U.S.through agreemrnt of a majority of congress.Texas and hawai joined the U.S.in this manner. my answer:texas annexation-1845

146. ## U.S/history AP

----------After TX achieved independence they wanted to be brought into U.S.Because it would upset the balance of free and slave states that not happen until 1845. In 9 years between independence and entering the U.S.they were a socerign nation called

147. ## Physics multiple choice

3. What are the units for Coeffecient of Lift? [kgm^-3] No units [Ns] [N^2] [N] [ms^-1] [kg] 4. What are the units for the ratio Lift to Drag? [Ns] [kgm^-3] No units [ms^-1] [kg] [N^2] [N]

148. ## conceptional physics

If a 35cm radius tire spins at a rate of 72 rad/s what is the rotating speed?

Let f(x) = 6.4 sin(x) -6.6 cos(x). What is the maximum and minimum value of this function? report answers accurate to 4 decimal places

150. ## Maths

Find the number of positive integers

151. ## phy

At a factory, a noon whistle is sounding with a frequency of 484 Hz. As a car traveling at 77 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change in

Rewrite 4 sin(x) -1 cos(x) as A sin(x + phi) A= phi= -pi less than phi less than pi

153. ## URGENT LANGUAGE ARTS URGENT~!

Which answer explains why there isn’t a hyphen between well and behaved in the following sentence? The students were so well behaved that Ms. Irvin dismissed them early. (1 point) The words well and behaved don’t end in -ly. The words well and behaved

154. ## maths- urgent

show that √Π+1 is irrational

155. ## physics

What is the maximum current allowed in a 7.5 W, 300 resistor?

156. ## Help Needed! Precalculus

Find all solutions to cos(8alpha)-cos(2alpha)=sin(5alpha) on 0 less than or equal to alpha less than (2pi)/3

157. ## phy

Doppler ultrasound is used to measure the speed of blood flow. If the speed of the red blood cells is v, the speed of sound in blood is u, the ultrasound source emits waves of frequency f, and we assume that the blood cells are moving directly toward the

158. ## chemistry

How many moles of sodium hydroxide are needed to react with 148.0 g of Iron (III) bromide?

159. ## URGENT language arts question~!

Which of the following compound words is spelled incorrectly? (1 point) afternoon teamate masterpiece earring My Answer: 1)B Is this correct? .

160. ## Statistics

You have spent a very long time training your dog to open the refrigerator and bring you a drink when you ask him to. Since your pet can’t read, his selection of the specific type of beverage he brings is completely random – although you notice that,

161. ## physics

Calculate the number of H2O molecules in a human body of mass 50.6 kg. Assume that, on average, water makes up 62% of the mass of a human body. (Use 1.0 u for the atomic mass of hydrogen, and 16.0 u for the atomic mass of oxygen.)

162. ## Finance

lisa borrowed \$8000.00 on an 8%, 60 day note after 15 days she paid \$2000.00 on the note , on day 45 , she paid \$1000.00 on the note. What is the total interest and ending balance due by us rule by ordinary interest