# Questions Asked onFebruary 16, 2012

1. ## physics

The charges and coordinates of two charged particles held fixed in an xy plane are q1 = 2.32 Î¼C, x1 = 3.08 cm, y1 = 0.793 cm and q2 = -3.14 Î¼C, x2 = -1.75 cm, y2 = 1.05 cm. At what (a)x and (b)y coordinates should a third particle of charge q3 = 5.72

2. ## statistics

One group of mothers has played classical music for their babies every day for 6 months while another group of mothers has not. The babies are tested to determine if there is a significant difference in the motor coordination skills of these two groups.

3. ## history

what did jefferson davis believe congress and the government should do about slavery?

4. ## Chemistry

If a 2.6 g of weak diprotic acid were dissolved in 100 mL of water and a 10 mL aliquot of this solution required 21.6 mL of 0.1 M NaOH to reach the first endpoint, what are the equivalent and formula weights of H2A? I think I first need to find the moles

5. ## Chemistry-Thermochemistry (grade 12)

A 65.0 g sample of 0.600 M HI at 18.46 degrees celsius is added to 84.0 g of solution containing excess KOH, also at 18.46 degrees celsius. The final temperature is 21.96 degrees celsius. Calculate the enthalpy of H for the reaction. Assume the specific

asked by Rose Bud
6. ## chemistry-Thermochemistry (grade 12)

calculate enthalpy of H for the reaction N2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) + 2H2O(l) Enthalpy of H = -6.22.2 kJ H2(g) + (1/2)O2(g) -> H2O(l) enthalpy of H = -285.8 kJ/mol H2(g) + O2(g) -> H2O2(l) enthalpy of

asked by Rose Bud
7. ## calculus

find the point (or points) where the ellipse 9x^2+4y^2=36 has maximum curvature. don't even know where to start with this one.

8. ## physics

A proton moves in a constant electric field from point A to point B. The magnitude of the electric field is 6.4 × 10^4 N/C; and it is directed as shown in the drawing, the direction opposite to the motion of the proton. If the distance from point A to

9. ## Simple Interest & Maturity Value

On September 7, Jennifer Rick went to Park Bank to borrow \$3,200 at 11 2/3% interest. Jennifer plans to repay the loan on January 5. Assume the loan is on ordinary interest (ordinary interest uses 360 days a year). Solving for: 1. interest Jennifer will

10. ## statistics

Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable: number of bank deposits in a month

asked by holland pattent
11. ## Math

Find a linear equation whose graph is the straight line with the given property. Through (2, −7) and (1, 1) I got -8x-23, I know it doesn't match, maybe its the wrong formula Find a linear equation whose graph is the straight line with the given

12. ## Chemistry

Can someone confirm that I'd be doing this right? If an 0.520 m aqueous solution freezes at -3.00 C, what is the van't Hoff factor, i, of the solute? It says I can find the Kf values on a table. I had no idea which Kf value to use... so i just used

y=tan(x-y)

14. ## chemistry

How many molecules of hydrogen gas are produced by the reaction of tin with 20.0 L hydrogen mono fluoride at STP

15. ## maths

find the perpendicular distance from the corner of the triangle to the opposite side if the side is 25cm long

16. ## chemistry

what is the vapour pressure in mm of Hg of nickel nitrate solution at 125 degree centigrade

Starting simultaneously from the same spot, O, Alvin and Bernard set out across a field in the gog. Alvin travels with velocity i + 2 j m/s and Bernard with velocity 3i + j m/s, To avoid losing each other, they hold opposite ends of 90 m string. a) At what

18. ## physics

A telescope has an object whose focal length is 60cm. (a)The telescope is used to watch a young zebra 500m away.If the image of the zebra is 20mm long and is located 25cm infront of the eye piece,find the actual length of the zebra

19. ## english

what should be taken into consideration when cultural bias occurs

20. ## Probability

In a Cc x Cc crossing of peas, 5 offspring are of genotype CC, 12 are of genotype Cc, and 6 are of genotype cc. What is the probability of this event?

21. ## english

how can you resolve cultural bias of staff members in the work place

22. ## geometry

a tree cast a shadow 25 feet long. the angle of elevation from the far end of the shadow to the top of the tree is 64 degrees,find the heighth of the tree

23. ## Physics

A driver has 50kg mass, and drives from a high board. On entering the water the driver travels vertically downward and comes to rest in a vertical distance of 5 m. The average resistance force is acting on the driver during the motion to rest in the water

24. ## Math

The least upper bound of a set of real numbers in (0,1) whose decimal expansions do not contain the digit 9 is k/9. What is the value of k? thanks!

25. ## maths

express x-1/(x+1)(x-2)^2 into partial fractions

26. ## math

make an ordered stem-and-leaf plot of the data, 16.9,17.8,16.3,16.4,17.8,18.1,15.4,16.8,17.1,18.3,15.5,16.2,17.9

27. ## Social Studies

I need to know what percentage of workers in the US were unemployed by 1932. I'm seeing a lot of different answers on the internet. Thanks..

28. ## social studies

Did Hoover's actions help put an end to the Depression. From what I'm reading most people say he didn't help but some things say he did do some good so unsure what to put. It is an agree or disagree question.

29. ## uhd

int carry=0; int prod,i,j,rem; int base=10; else if ( op == '*' ) //checks for operator, performs array multiplication { for(i=size-1; i>-1;i--) { for(int j=size-1; j>-1;j--) { prod =firNum[i]*secNum[j]; prod += carry; if(prod>=base) { carry = (prod/base);

30. ## statistics

2. The grades on a statistics midterm exam were normally distributed with a mean of 72 and a standard deviation of 8. a. What is the proportion of students received a B grade. b. What is the proportion of students that failed the exam? c. What is the grade

31. ## commace

from a pack of 52 cards two cards are drawn without replagement.find out the probability that first is of heart and secod is ace?

32. ## Math sequence

The sum of the first 5 terms of an arthmetic sequence, is 30 and the sum of the next 4 terms is 69 . Find the arthemetic progression?

33. ## Spelling

Relive how I put in sentence

34. ## programming

How to work this programming problem- Write a program that allows the user to input a total dollar amount for an online shopping order and computers and outputs the shipping cost based on the following schedule Order total Ship within USA Ship to Canada

35. ## math

2 airplanes start at the same time from airports 500 km apart. Each flies with an airspeed of 200 km/hr toward the other airport. One reaches its airport half an hour before the other plane reaches the other airport. How fast is the wind blowing?

36. ## American Goverment

In the United States, the emphasis on individual rights helped to shape A. a powerful foreign policy. B. a sense of national identity. C. a strict class system. D. a system of religious intolerance. ?? help Please.

37. ## American Goverment

What is the main function of the State Department? A. to determine foreign policy B. to determine domestic policy C. to determine financial policy D. to determine military policy ?

38. ## American Goverment

The Preamble of the U.S. Constitution “We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of

39. ## algebra

Solve the equation and write down the property you use at each step to simplify the equation. Consider the equation: 4x + 11 = (5x + 34)/2. Be sure to show your work.. Thank You Jiskha..!! :)

40. ## American Goverment

Which phrase from the U.S. Constitution BEST reflects the principle of popular sovereignty? A. “No person shall be a Senator . . .” B. “The Congress shall have the Power . . .” C. “We the People . . .” D. “Establish Justice . . .”

41. ## science

EXPLAIN ELECTROMAGNETISM

42. ## SCIENCE

WHAT IS SOLENOID

43. ## chemistry

Determine the volume of a 0.550M of kmno4 solution required to completely react with 2.70 of zn

44. ## algebra

I am not good at math at all and my teacher has given me a very hard question about solving for the indicated variable. p=s+t+u solve for u Help please

45. ## physics

The car has a mass of 1200kg Calculate the kinetic of the car when it travels at a speed of 12 m/s.

46. ## physics

a ball is dropped from a height of 10 meters.if the energy of the ball is reduced by 40% after striking the ground,how high can the ball bounce back?

47. ## english

Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans Make certain that you describe how he dresses how he lives what he believe?

48. ## science

EXPLAIN THE USES OF ELECTROMAGNETS

49. ## Geometry

Use circle O to find x AB=3x-5, CD=2x+1

50. ## Chemistry

How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL) Is it 2.28mL of conc HCl dilute to 100mL with water? Please show the calculation steps.

51. ## chemistry

A flask containing a gas was connected to both a closed-end and an open-end manometer. In the closed-end manometer, the mercury in the sealed arm was 755 mm above the level in the arm connected to the fax. In the open-end manometer,the arm connected to the

52. ## math

Without a calculator, find the exact value of csc20° − cot 40° , showing work.

53. ## History

Hi! I need help with my history paper regarding the Russian revolution and urbanism. Does anyone know good sources? Also, I need insights with the idea that: Once a place has been urbanized, it never goes back. In a way, the Russian revolution did not

54. ## physics

A particle that undergoes simple harmonic motion has a period of 0.4 s and an amplitude of 12 mm. The maximam velocity of the particle is?

55. ## algebra 2

solve this equation by using the quadratic (3x)^2-12(3x)+27=0

56. ## Calc

You are a lab technician and must create 250 ml of a 17% salt-solution. a. If you have 500 ml of 28% salt-solution, how many milliliters of it should you mix with water in order to create 250 ml of a 17% salt-solution? b. If you have 400 ml of 40%

57. ## Calc

You are a lab technician and must create 250 ml of a 17% salt solution. You have available three stock solutions. You have a one liter container of a 5% salt, a 500 ml container of a 28% salt solution, and a 400 ml container of a 40% salt solution. Show

58. ## english 3

“Redskin” was originally a term for

asked by Mike Johnson
59. ## Calc

Consider the Dosage Formula y=(S/1.73 where y = childfs dosage, a = the adult dosage, and S = the surface area of the body in square meters. The Surface Area Formula is S(w,h)=0.0101w^(.425)*h^(.725) where S = the surface area of the body in square

60. ## physics

This isn't so much a question, but a query: What does this mean? K.E. = 1/2 mv2 I can do the homework on my own if someone lets me know. Thanks.

61. ## chemistry

calculate the theoretical weight of sodium borohydride need to reduce 50 mg of benzil

62. ## mineralogy (geology related)

what is meaning of the golf and shiller texture in mineral or rocks. thank you.

63. ## Calculus

find y'' if x^4+y^4=16

64. ## chemistry

What would the predicted TSS value of a solution be if I combined one liter of 35 mg/L solution with one liter of 114 mg/L solution? Thanks for the help.

65. ## Calculus

find y' if sin^-1(xy)=cosy

66. ## Calculus

find all points at the curve x^2y^2+2xy=3 with the slope of the tsngent is -1

67. ## Physics

A conducting hollow sphere of radius. 2m and charge 20 micro coulumbs. What is the potential of the sphere at a distance r from the center if: A)r= .1m? b)r= .2m? c) r=.3m?

68. ## electric fields

In an electic field described by E=(20i+60j) V/m, calculate the change in potential for a particle that moves from the origin to the coordinate (3,3) m?

69. ## potential

What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro coulumbs and q2= -5 micro coulumbs?

70. ## math

You are designing a rain gutter made from a piece of sheet metal that is 1 foot by 5 feet. The gutter is formed by turning up two sides. You want the rain gutter to have the greatest volume possible. Below is the polynomial function that represents the

71. ## statistics

It is estimated that amounts of money spent on gasoline by customers at their gas stations follows a normal distribution witha standard deviation of \$3. It was also found that 10% of all customers spent more than \$25. What percentage of customers spent

72. ## physics

The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car. If you could also tell me how you came to the answer, it would help me in the

73. ## Physics 2

A(n) 78-Ù resistor and a 68-Ù resistor are connected in series across a battery. The voltage across the 78-Ù resistor is 25 V. What is the voltage across the 68-Ù resistor?

74. ## math

how to figure out 2x+b=1650

75. ## math

solve and check each of the following quadratic equation (1)x^2+16x=36 (2)x^2=10x-16 (3)3x=x^2-4

77. ## Chemistry

A flask containing a gas was connected to both a closed-end and an open-end manometer. In the closed-end manometer, the mercury in the sealed arm was 755 mm above the level in the arm connected to the fax. In the open-end manometer,the arm connected to the

78. ## math

In the figure below, AF is the perpendicular-bisector of DN. What is m angleADF?

79. ## Psychological Statistics

A random selection of files from a student counseling center revealed the following reasons why college students seek services: Mental health issues 25 Learning/school issues 15 Relationship issues 5 Other 5 What does it mean to say the files were randomly

80. ## English

Writeacher, as you are a teacher, I would like to have your personal opinion about what I included below. (I'd like you to check the word choice, too) 1) At school teachers told me that he my seven-year-old child has got a great intelligence and logic

81. ## algebra

can you simplify Simplify 5m - 13n - n + 4m

82. ## College: HCA/220 Week 3 DQ 2

You are a health care administrator, and the nursing supervisor approaches you with concerns about documentation in a patient's chart. While reading the chart, you discover some concerns regarding how things are being documented. Begin discussing the

83. ## Physics

A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 968 and 1550 N, respectively. The acceleration of the cable is 0.620 m/s2, upward.

84. ## American Gov't--please check

On election day, each voter is assigned to a special election district, also known as a _____. 1.)polling unit My answer2.)precinct 3.)neighborhood poll 4.)election unit

85. ## Physics 2

A cylindrical copper cable carries a current of 1170 A. There is a potential difference of 1.60 10-2 V between two points on the cable that are 0.21 m apart. What is the radius of the cable?

86. ## American Gov't--please check

Parliamentary democracies often have _____ representation, which increases the likelihood that minor parties will be represented in the legislature. My answer1.)proportional 2.)direct 3.)simple 4.)indirect

87. ## Science

How many grams of oxygen are collected in a reaction where 230. mL of oxygen gas is collected over water at a temperature of 25°C and a total pressure of 697 torr?

88. ## MATH HELP

In what proportion should 95% alcohol be mixed with 30% alcohol to make 70% alcohol?

89. ## American Gov't--please check

With the exception of _____ and _____, the candidate who wins the majority of the popular vote automatically receives all of the electoral votes. 1.)Virginia, North Carolina 2.)Minnesota, Vermont My answer3.)Maine, Nebraska 4.)Maine, Florida

90. ## geometry

How tall is a tower if it casts a shadow 65 ft long at the same time that a building 160 ft tall casts a shadow 130 ft long?

91. ## chemistry-Thermochemistry (grade 12)

calculate enthalpy of H for the reaction N2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) + 2H2O(l) Enthalpy of H = -6.22.2 kJ H2(g) + (1/2)O2(g) -> H2O(l) enthalpy of H = -285.8 kJ/mol H2(g) + O2(g) -> H2O2(l) enthalpy of

asked by Rose Bud
92. ## Health

how do lipids move through the body so they can be digested and absorbed? How are lipids stored in the body? Explain your answer.

93. ## Managerial Accounting

During June, the receipts and issuances of Material No. A2FO are as follows: Received June 3 1,100 units @ \$15 16 1,700 units@ \$17 29 900 units@ \$18 Issued June 11 700 units 4 Job No. 116 18 1,900 units 4 Job No.117 30 800 units 4 Job No. 118 A) Determine

94. ## AP CHEMISTRY

A) At 800 K the equilibrium constant for I2(g) 2 I(g) is Kc = 3.1 10-5. If an equilibrium mixture in a 10.0-L vessel contains 3.44*10-2 g of I(g), how many grams of I2 are in the mixture? answer is .060g B)For 2 SO2(g) + O2(g) 2 SO3(g), Kp = 3.0*104 at 700

95. ## English

Thank you very mch for comforting me. Actually, my son likes playing football though his performances are not very good. He likes getting enganged in the various activities and talking to his friends while doing them. He does his best to kick the ball,

96. ## Physics

Microwaves travel at the speed of light, 3.00× 108 m/s. When the frequency of microwaves is 3.67× 109 Hz, what is their wavelength? Answer in units of m

97. ## Physics

The distance between two successive crests of a certain transverse wave is 1.42 m. Eight crests pass a given point along the direction of travel every 19.5 s. Calculate the wave speed. Answer in units of m/s

98. ## math

shape has 4 side: at least one angle measure90 is it a.righ triangle .b.right trapezod c.right triangle b.rhombus

99. ## math

5 friend are buying tickets.HOW MANY COULD THEY LINE UP.

100. ## Physics

Two circuits (the figure below) are constructed using identical, ideal batteries (emf = E ) and identical lightbulbs (resistance = R). If each bulb in circuit 1 dissipates 4.00 W of power, how much power does each bulb in circuit 2 dissipate? Ignore

101. ## Physics

About 5.12 x 104 m above Earth's surface, the atmosphere is sufficiently ionized that it behaves as a conductor. The Earth and the ionosphere form a giant spherical capacitor, with the lower atmosphere acting as a leaky dielectric. Find the capacitance C

102. ## calculus 2

please find the inverse function

103. ## calculus 2

please find the deriative

104. ## Criminal Justice

•Select a city, town, or municipality and examine trends in criminal activity over the last 3 years. Analyze reported crime statistics for major/minor offense categories such as murder, robbery, rape, and create a table of the results. •What are the

105. ## English

Which of the following is punctuated correctly? Choices are: A. President Roosevelt described December 7, 1941 as a date which will live in infamy. B. President Roosevelt described December 7, 1941 as a date, which will live in infamy. C. President

106. ## English

Which of the following is punctuated correctly? Choices are: A. The new shoe store is located at 11347 Arthur Drive, Baltimore, Maryland 21201. B. The new shoe store is located at 11347 Arthur Drive, Baltimore, Maryland, 21201. C. The new shoe store is

107. ## calculus 2

find the ivverse function f(x)= x^3-13

108. ## PHYSICS HELP

A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. She has a mass of 66.0 kg and he a mass of 72.0 kg, and they start from rest 25.0 m apart. A)Find his initial acceleration. i put 7.68*

109. ## Math

Given two spinners one with four equal parts labeled 1,1,3,4. And one with six regions labeled 1,2,3,4,5,6. Given one spin on each spinner what is the probability of spinning two numbers with the sum of 7?

110. ## calculus 2

find the derivative y=e^8x-5

111. ## calculus 2

find the indefinite integral showing all work. x^3(x^4-11)6dx

112. ## Financial Accounting

Prepare the general journal entries for the following transactions: Jan 2, 2011 -- Purchased land with a building on it for \$750,000. The land is worth \$300,000. Paid \$150,000 cash down and signed a mortgage payable for the balance. Dec. 31,

113. ## physics helpppp!!

The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string. use 340 for speed of sound

114. ## chemistry

Q1) For the reaction, A to B, Delta H= +11.00 kJ mol-1 and Keq is 12.50 Calculate i) delta G and ii) delta S at 25 C (degrees celcius) 0 C degrees celcius = 273.15 K; R = 8.314 J K-1 mol-1] PLease help dr bob222

115. ## History

Which of the following words best describes the climate of New Zealand..a) tropical b) temperate c)arid d)artic

116. ## Chemistry

A chemist wants to make a solution of 3.4 M HCl. There are two solutions of HCL that he can find on the shelf. One has a concentration of 6.0 M, while the other has a concentration of 2.0 M. Which solution can the chemist use to make the desired acid?

117. ## Physics

Two circuits (the figure below) are constructed using identical, ideal batteries (emf = E ) and identical lightbulbs (resistance = R). If each bulb in circuit 1 dissipates 4.00 W of power, how much power does each bulb in circuit 2 dissipate? Ignore

118. ## Physics need help thnk you

A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)

119. ## physics

A ball is thrown horizontally off the edge of a cliff with an initial speed of 20.4 m/s. (a) How long does it take for the ball to fall to the ground 20.3 m below? 1 s (b) How long would it take for the ball to reach the ground if it were dropped from rest

120. ## Physics

Why do electric field lines begin on positive charges and end on negative charges?

121. ## physics2

A drag racer crosses the finish line of a 304.8 m track with a final speed of 121 m/s. (a) Assuming constant acceleration during the race, find the racer's time and the minimum coefficient of static friction between the tires and the road. time 1 s minimum

122. ## Physics

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N

123. ## physics3

A cannonball is catapulted toward a castle. The cannonball's velocity when it leaves the catapult is 39 m/s at an angle of 40° with respect to the horizontal and the cannonball is 7.0 m above the ground at this time. (a) What is the maximum height above

124. ## physics4

A baseball is thrown horizontally from a height of 11.20 m above the ground with a speed of 27.5 m/s. Where is the ball after 0.90 s have elapsed? The ball is 1 a horizontal distance of 2 m from the launch point.

125. ## physics5

During a walk on the Moon, an astronaut accidentally drops his camera over a tall cliff. It leaves his hands with zero speed, and after 2.1 s it has attained a velocity of 3.4 m/s downward. How far has the camera fallen after 4.2 s?

126. ## Math

I need help setting up this equation. The Volume, V, of a given mass varies directly as the temperature, T,and inversely as the pressure, P.

127. ## physics6

In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 multiplied by 10-17 N during the first 2.2 cm of the tube's length; then they move at essentially constant velocity another 43 cm before hitting the

128. ## Math

Write the partial fraction decomposition of the rational expression. (80-14x)/(x^3 -8x^2 +16x)

129. ## Math

200=5x-(100+2x)

130. ## Math

A cab charges \$2.95 for the first 1/4 mi and charges \$0.65 for every additional 1/4 mi or apart thereof. What is a possible distance a customer can travel with \$67.20? Express the answer to 1 decimal place.

131. ## Trig

what is the amplitude, period, phase shift, and vertical shift of each equation? 1. y= A cos(B(x-3))+4 2. y=-2sin(2piX/3) 3. y=4cos(3pi(x+3)) 4. y= -3cos(2(x-pi/4))+0.4 thank you so much!

132. ## econ

in "The mark of the beast" how does the narrator feel about Eastern gods at the end of the story?

133. ## Physics helppp

A crate of potatoes of mass 9.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.69 and μk = 0.41. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. magnitude N?

134. ## AP CHEMISTRY

If a solution of HF (Ka = 6.8*10-4) has a pH of 3.42, calculate the total concentration of hydrofluoric acid.

135. ## economics

Before the merger, each of the separate newspapers was losing about 10 million per year. What forecast would you make for the merged firms profits? Explain. b. Before the merger, each newspaper cut advertising rates substantially. What explanation might

136. ## science

how are the soles of your feet heated if you stand barerfooton a sun-warmed sidewalk?

asked by Mari C.
137. ## science

why does arizona have monsoon season?

asked by Mari C.
138. ## science

changes in the positions of the continents may affect global climates by affecting...? finish the sentence. thx

asked by Mari C.
139. ## math

Find 110% 0f 24

140. ## Wow is there no one to help with physics???

A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)

141. ## science

during eatrhs past, some landmasses lay nearner to the polesand become glaciated. explain how this event could have caused global warming?

asked by Mari C.
142. ## physics

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N

143. ## AP CHEMISTRY

1)calculate [OH-] and pH for each of the following solutions. (Kw = 1.0*10^-14.) a)0.101 M NaF b) 0.030 M Na2S c)a mixture that is 0.019 M in CH3COONa and 0.036 M in (CH3COO)2Ba please help and if u can try to explain

144. ## science

the climate of arizona is always warm because?

asked by Mari C.
145. ## Math

Answer the questions based on the information give on the sign 1 Beaver pelt=12silver coins 1 Buffalo hide=25silver coins 1 River Otter skin=2gold coins 5 silver coins=1gold coin Jim comes into the station with 45 beaver pelts. He would like to get gold

146. ## PHYSICS

A crate of potatoes of mass 9.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.69 and μk = 0.41. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. magnitude N?

147. ## Physics

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N

148. ## Physics

A mass of .24 kg is attached to a spring and is set into vibration with a period of .30 s. What is the spring constant of the spring? Answer in units of N/m

149. ## Physics

While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint.

150. ## chemistry

When 26 mL of a 120 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F- are in the new solution

151. ## Living ENvironment

can you give me a picture lock and key diagrams. I need to make my own lock and key diagram. I don't know the difference between synthesis and hydrolosis so can you give me some pictures and label them if they are hydrolosis or synthesis.

152. ## chemistry

When 26 mL of a 120 mL stock solution containing 3.23 M CaF2 is diluted to 35 mL, how many moles of F- are in the new solution

153. ## Physics

A skier with a mass of 56 kg starts from rest and skis down an icy (frictionless) slope that has a length of 70 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow becomes

154. ## 6th grade science

what would happen if cytokinesis occurred without mitosis???

155. ## geometry

quadrilateral JKLM is graphed in the coordinate plane.Classify quadrilateral JKLM as specifically as possible.Show your work, and explaine why your answer is correct?

156. ## physics

I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars

157. ## Calculus

Find the volume of the solid by subtracting two volumes, the solid enclosed by the parabolic cylinders y = 1 - x 2, y = x 2 - 1 and the planes x + y + z = 2, 6x + y - z + 16 = 0.

158. ## Math

Answer the questions based on the information give on the sign 1 Beaver pelt=12silver coins 1 Buffalo hide=25silver coins 1 River Otter skin=2gold coins 5 silver coins=1gold coin Pathfinder Polly steps in to trade egss for buffalo skins. She would like to

159. ## Social Studies

Why did President Abraham Lincoln want Reconstruction to be simple and easy? Choices are: A. He wanted to win the votes in the South in his reelection campaign. B. He wanted to keep a good working relationship with former Confederates who would probably

160. ## English

Yes, you are right. Thank you very much for giving me advice, too! By the way, I need to include this sentence in an email. Could you please check it? 1) As promised, I'm sending you both the email address and the password of my first class so that your

161. ## Social Studies

What group believed President Lincoln's Reconstruction plan was too easy? Choices are: A. Democrats B. Freedmen C. U.S. Senate D. Radical Republicans

162. ## Social Studies

Why was Lincoln assassinated? Choices are: A. Booth had a mental illness B. Booth blamed Lincoln for the war C. Booth shot the president by accident D. Booth was paid by southern sympathizers to kill the president

163. ## Probability

Five out of 8 bags of M&M's had exactly 32 pieces in them. How many bags out of 40 should have exactly 32 pieces?

164. ## NU

Determine the net force necessary to give an object with a mass of 3.4 kg an acceleration of 4.3 m/s2

165. ## Engliish Lit-Please check

"Those RULES of old discover'd not devis'd Are nature still, but Nature Mehtodiz'd Nature, Like Liberty is but restrain'd By the same Laws which first herself ordain'd What is this an example of simile hyperbole analogy overstatement personification I'm

166. ## chemistry

Given the following equation, how many grams of PbCO3 will dissolve when exactly 1.0 L of 1.00 M H+ is added to 6.00 g of PbCO3? When the equation is PbCO3(s) + 2H(+)(aq) = Pb(2+)(aq) + H2O(l) + CO2(g) Please explain in detail, step by step

167. ## french

Combine the elements with prepositions in french. Nous adions/ nos parents/ faire le menage. is it Nous adions a nos parents a faire le menage? or de faire? thanks

168. ## Math

Forty-eight decrease by a number is the same as the difference of four times the number and seven. Find the number. Please help me and show your work please and thank you

169. ## physics

A freight train has a mass of 1.5 107 kg. If the locomotive can exert a constant pull of 6.9 105 N, how long does it take to increase the speed of the train from rest to 72 km/h? min

171. ## chemistry

design a simple lever that could be raised and lowered smoothly using niitinol wires.

The rectangular base of a box has a perimeter of 60cm. The base is twice as long as it is wide. Saskia plans to cover the top and bottom with coloured paper;which cost 5 cents per square centimetre. She lans to cover the other 4 faces with white paper;

173. ## Physics

How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?

174. ## statistics

PROBLEM 4: PREFERENCE FOR CAN (a) What is the probability of preferring a glass bottle? b) What is the probability of preferring a glass bottle given that one lives in Region A? c) What is the probability of preferring a can given that one lives in Region

175. ## calculus

An equation of the line tangent to the graph of f(x) = (4x2 - 8x + 3)4 at the point where x = 1 is:

177. ## Math

Convert 35 to a base number. Use this base five number & count in base five through next fifteen numbers.

asked by Heather P.
178. ## English

What is the subject and verb in the sentence below: The company offered a fifty dollar rebate on every energy efficient refridgerator bought during the month of June.

179. ## History

What is the gulf war?

180. ## Math

Solve the following problem. The owner of a toy store is taking inventory of bicycles and tricycles in an unusual way. He said he counted 50 wheels and 40 pedals.How many bicycles and how many tricycles did he have?

181. ## chemistry

At STP, when 3.75 liters of oxygen reacts with excess glucose, what volume of carbon dioxide does it produce?

182. ## physics

A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.770 and 0.470, respectively.

183. ## geometry

why do the parallelogram and the rectangle have the same formula? b*h

184. ## algebra please ck.

joe wants to spend 70. dollars at most and has 60 cu inches of space left in his soldier's care package. candy costs \$7 and takes up 3 cu inch of space phone cards cost \$5. and take up 15 cu in. of space. Is this correct? if not please change it or tell me

185. ## math

use one or more properties to rewrite the expression as an expression that does not use parentheses. (px1)x6

186. ## Writing

Don’t you just wish you can have the time of your life without your parents? I know I wish I could. I would like to go out and hang out with my friends without parents such at parties with no chaperone. First reason is I could have a better relationship

187. ## math

how do you use the distribute property to find each product mentally for 12x44

188. ## science

When girls get pregnant, how do they babies get defected?

190. ## SCIENCE

I have a homework pqage for kindergarten that says Petal Patterns. Label each pattern. I'm not sure what the teacher is looking for. Can anyone help me?

191. ## geometry

Rectangles A and B are congruent. The base of rectangle A is 5 inches more than its height. The height of rectangle B is 12 inches. What is the base of rectangle A?

192. ## math

Two numbers have the sun or 100. Bothe numbers are divisble by 4 but not 5. Their quotient is also divisble by 4

193. ## math

A diver rested at -340 feet. Then she started descending, and 20 minutes later she was at -420 feet. How many feet per minute did she move?

194. ## Physics

What is the free-fall acceleration in a location where the period of a 0.594 m long pendulum is 1.55 s s? Answer in units of m/s

195. ## math

John was in charge of buying milk for a class of 32 students. Milk is sold in half-gallon cartons and gallon cartons at the market. The half gallon costs 1.46 and the gallon costs 2.39. John bought all 21 cartons of milk the store had and paid 41.82. How

196. ## psy230

A health researcher wanted to know if there was a difference in success rates between three methods of quitting smoking: A, B, and C. She designed a study with 15 participants, 5 in each group, and asked participants to track how many cigarettes they

197. ## POEM

what are 4 phrases for a rabbit

198. ## AP CHEMISTRY

An unknown salt is either KBr, NH4Cl, KCN, or K2CO3. If a 0.100 M solution of the salt is neutral, what is the identity of the salt?

199. ## AP CHEMISTRY

Calculate the pH of a solution made by adding 3.50 g of lithium oxide (Li2O) to enough water to make 1.290 L of solution. (Kw = 1.0 10-14)

200. ## Physics

The body of a 1269 kg car is supported on a frame by four springs. The spring constant of a single spring is 2.75 × 10 4 N/m. Four people riding in the car have a combined mass of 256 kg. When driven over a pothole in the road, the frame vibrates and for

201. ## math

If the height of a cylinder is made nine times longer, how many times the volume of the original figure is the volume of the new figure?

202. ## science

According to Peter Saundry, there is no true universal code of ethics because standards ods conduct vary from place to place and time to time. True or False

203. ## word problem

Leon bought a 10 speed bicyle on sale for 75% of oringinal price.The sale price was \$41 less than the origina lprice. find the original price and the sale price.

204. ## logic

if an argument does not commit a fallacy, it is a)necessarily valid b)necessarily sound c)Not enough information to determine d) Both A and B

205. ## Physics

A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 50.0 vibrations in 26.6 s. A given crest of the wave travels 355 cm along the rope in a time period of 12.1 s. What is the wavelength? Answer in units of m

206. ## Algebra 1

Tell whether a correlation is likely. If it is, tell whether the correlation reflects a casual relationship. Explain your reasoning. -the amount of time you study for a test and the score you receive -the shoe size and the salary of a teacher

207. ## math

Is a trapezoid also a parallelogram? Explain why or why not.

208. ## math

solve for x: -3x^2+6x-3=0

209. ## math

why do the parallelogram and the rectangle have the same formula? b*h

210. ## Physics1

When a mass of 21 g is attached to a certain spring, it makes 23 complete vibrations in 5.0 s. What is the spring constant of the spring? Answer in units of N/m

211. ## Math

the green bay packers ordered roast beef subs and turkey subs for lunch. a total of 53 subs were ordered. the number of roast beef subs ordered is 2 more than twice the number of turkey subs. write and solve a system of linear equations to determine how

212. ## physics

A 5.0-kg block is at rest on a horizontal floor. If you push horizontally on the 5.0-kg block with a force of 10.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 12.0-kg block is stacked on top of the 5.0-kg block. What is

213. ## Physics

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N Physics -

214. ## TO MS.SUE

THANK YOU SO MUCH! THE PHRASES WERE PERFECT!

215. ## Physics Help

While a person is walking, his arms swing through approximately a 45° angle in .530s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint.

216. ## physics

I need only part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars

217. ## biomechanics

a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.

218. ## math

If 16 points are arranged in a circle, how many lines are needed to join every point at once?

219. ## trig

how to graph y = 1/2 cos 2x for 0 ≤ x ≤ 2 p

220. ## English

What part of speech is... You'll never corner him! (corner)

221. ## Physics

A mass of 0.40 kg is attached to a spring and is set into vibration with a period of 0.15 s. What is the spring constant of the spring? Answer in units of N/m

222. ## Math

Find two numbers on the 30-board(the factor game) with the greatest product.

223. ## math

If 16 points are arranged in a circle, how many lines are needed to join every point at once?

224. ## physics

A wave traveling in the  + x direction has an amplitude of 0.35 m, a speed of 5.2 m/s, and a frequency of 14 Hz. Determine: 3.1.the wavelength, (2) 3.2.the wave number, (2) 3.3the angular velocity, (2) 3.4. the equation of the wave

226. ## Physics

The body of a 1297 kg car is supported on a frame by four springs. The spring constant of a single spring is 1.24 × 10 4 N/m. Four people riding in the car have a combined mass of 259 kg. When driven over a pothole in the road, the frame vibrates and for

227. ## math

a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.

228. ## math

One number is 25% of another. The larger number is 12 more than the smaller. What are the numbers?

229. ## statistics

On standard IQ tests, the mean is 120 and the standard deviation is 15. The results are very close to fitting a normal curve. Suppose an IQ test is given to a very large group of people. Find the percent of people whose IQ score is less than 120.

230. ## chemistry

Ethyne, C2H2, combusts explosively to produce carbon dioxide and water. How many moles of ethyne area required to yield 4.98 moles of water?

231. ## help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

red riding hood had good purposes when she rewrote her own fairy tale but she forgot that.........................

232. ## MATH HELP PLZ

A physician orders 750mg of chloramphenicol to be added to a 100ml bag of NS. If the drup is reconstituted to 1gm/10ml, how many mills will be added to NS?

233. ## Physics

You are hiking out in California and come across an abandoned mine shaft. Wondering how deep the mine shaft is you toss a rock in and it takes 5.1 seconds before hitting the bottom. How deep is the mine shaft in meters?

234. ## math

the area of a squre is 9 square yards. 3x3x3x3 what is the are of the square in squar feet? i got 81 square feet is that right?

235. ## Science

I am learning how to balance a chemical equation but I don't understand it at all. I read that in order to balance the equation, you need to find the number of atoms. How do I do that? How do you balance a chemical equation?

236. ## math

Alexandra has 18 yo-yos.She spent \$9.00 to buy them all.She wrote the equation 18 divided by 9 = y to find how many yo-yos she got for each dollar she spent.Sven has 9 yo-yos.He spent \$18.00 to buy them all.He wrote the equation 18 divided by 9 = y.What

237. ## Physics

The distance between two successive crests of a certain transverse wave is 1.12 m. Eight crests pass a given point along the direction of travel every 12.3 s. Calculate the wave speed. Answer in units of m/s

238. ## physics

A harmonic wave is traveling along a rope. The oscillator that generates the wave com- pletes 46.0 vibrations in 26.5 s. A given crest of the wave travels 351 cm along the rope in a time period of 12.5 s. What is the wavelength? Answer in units of m

239. ## physics14

In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 multiplied by 10-17 N during the first 2.2 cm of the tube's length; then they move at essentially constant velocity another 43 cm before hitting the

240. ## Math

1/2(6x-4)=4x-9 Please help me solve and work it out thanks

A 5.0-kg block is at rest on a horizontal floor. If you push horizontally on the 5.0-kg block with a force of 10.0 N, it just starts to move. (a) What is the coefficient of static friction? (b) A 12.0-kg block is stacked on top of the 5.0-kg block. What is

242. ## chemistry homework help!!

Dry ice (solid CO2) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse added and the hole plugged. When lit the exploding gunpowder rapidly vaporizes the dry ice

243. ## algebra1

im just checking to make sure i did my problems right before tomorrow i had to simplify 6 sq.root2 devided by sq.root3. I came up with 2 sq.root6 is this done right?

244. ## fractions

ordering fractions least to greatest 3/7 1/9 2/3

245. ## chemistry homework help!!

many gases are shipped in high pressure containers. consider a steel tank whose volume is 42.0L and which contains O2 gas at a pressure of 165atm at 23 degrees celsius. 1.) what mass of O2 does the tank contain? 2.) what volume would the gas occupy at STP?

246. ## algebra1

I have no idea how tp simplify 2 sq.root20-3 sq.root7-2 sq.root5+4 sq.root63? I guessed 2 sq.root5-3 sq.root7+4 sq.root63 is it right?

247. ## physics

A harmonic wave is traveling along a rope. The oscillator that generates the wave com- pletes 48.0 vibrations in 25.8 s. A given crest of the wave travels 413 cm along the rope in a time period of 10.5 s. What is the wavelength? Answer in units of m

249. ## math

what is 1/4 plus 1/2

250. ## statistics

The Acme Company has developed a new battery. The engineer in charge claims that the new battery will operate continuously for at leas 7 minutes longer than the old battery. To test the claim, the company selects a simple random sample of 100 new batteries

asked by Maria E. S.
251. ## chemistry homework help!!

Calcium Hydride reacts with water to produce hydrogen gas: CaH2(s) + H2O (l)---> Ca(OH)2 (aq) + H2 This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is desired. How many

253. ## chemistry

C2H5OH + 3O2 --> 2CO2 + 3H2O How many grams of O2 are consumed when 5.86 ml of Ethanol burns completely (the density of C2H5OH is 0.789 g/ml)?

254. ## algebra1

there are 2 more i needed help with/checked. i had to simplify sq.root96 devided by sq.root8, the answer i came up with was sq.root2/4. the second problem is i had to find the sq.root of the fraction 64/100, I chose sq.root8/sq.root10 and sq.root4/sq.root5

255. ## Physics

When a mass of 21 g is attached to a certain spring, it makes 16 complete vibrations in 4.4 s. What is the spring constant of the spring? Answer in units of N/m

256. ## Math

The equation V=1/3 Bh gives the volume V of a pyramid, where B is the area of the base and h is the height. Solve this equation for B. Please help me and show your work thanks

257. ## chemistry

How many milliliters of a 155 mL solution of 1.7 M AlCl3 must be used to make 70 mL of a solution that has a concentration of 0.21 M Cl-?

258. ## chemistry

. A 13 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.21 M Br-. What was the concentration of AlBr3 in the original undiluted solution?

259. ## English

So ms. Sue before you say that theme of story be don’t look back or you be destroyed. ms. sue before I start this paragraph, I also need to put 5 quotes in paragraph from story, which u think be best ones to put in there?

260. ## Physics

A mass of 0.24 kg is attached to a spring and is set into vibration with a period of 0.15 s. What is the spring constant of the spring? Answer in units of N/m

261. ## physics

A visitor to a lighthouse wishes to determine the height of the tower. The visitor ties a spool of thread to a small rock to make a simple pendulum, then hangs the pendulum down a spiral staircase in the center of the tower. The period of oscillation is

262. ## physics

A hose ejects water at a speed of 2m/s through a hole of area 0.01m2.if the water strikes a wall normally,calculate the force on the wall in Newtons,assuming the velocity of water nomal to wall is zero after collision.

263. ## chemistry

if gasoline has a density of 0.65g/cm what would the mass of a 34 liter tankful of gasoline in kilograms and weight in pounds be? How would this formula be set up

264. ## math

a submarine is 294 feet below sea level. a helicopter is flying diretly over the submarine 1277 feet above sea level. what is the distance in feet from the helicpter to the submarine? i got 1571 feet is that righ?

265. ## History

My teacher wants us to do a project on the 90's. In my group, I was assigned to do the styles that the 90's people wore. I am down to kids,like, how they dressed. How did kids in the 90's dress? Please answer.

asked by Mary Anika
266. ## Physics

The body of a 1290 kg car is supported on a frame by four springs. The spring constant of a single spring is 2.59 × 104 N/m. Four peo- ple riding in the car have a combined mass of 246 kg. When driven over a pothole in the road, the frame vibrates and for

267. ## Physics

A mass of 0.40 kg is attached to a spring and is set into vibration with a period of 0.15 s. What is the spring constant of the spring? Answer in units of N/m what is the rearranged equation to get for k?

268. ## algebra

A black snake lies at the base of an apple tree and a cat is climbing in the tree branches. The number of apples on the tree is four less than twice the tree's height. One year ago the the cat's age was one-third of his mother's current age. Two years from

269. ## algebra

y=1/4x-1 1/2y=x-2 This is systems of Equations please work out the problem and explain it

270. ## Physics

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N Physics -

271. ## math

if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? HELP ASAP!! THANK YOU TO WHOEVER HELPS!!

272. ## math

I have to make a line segment that is 5000mm long I have no idea how long Can u help me?

273. ## Physics

King Kong carries Fay Wray up the 321 m tall Empire State Building. At the top of the skyscraper, Fay Wray’s shoe is knocked off with an initial upwards velocity of 5.1 and falls towards the ground. With what final velocity will the shoe be moving when

274. ## algebra

Find A ∪ B. (Enter your answers as a comma-separated list.) A = {2, 4}, B = {0, 1, 2, 3, 4, 5}

275. ## match

A certain land area is 340,000 square miles, and it holds a population of 63.1 million people.Calculate the population density.

276. ## Physics

A load of 47 N attached to a spring that is hanging vertically stretches the spring 0.22 m. What is the spring constant?

277. ## physics

A water balloon was dropped from a high window and struck its target 3.9 seconds later. If the balloon left the person's hand at -8.4 m/sec, what was its velocity on impact?

278. ## math

if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? Thank you anyone who helps :D

279. ## physics

A toy gun uses a spring to project a 5.6 g soft rubber sphere horizontally. The spring constant is 10.0 N/m, the barrel of the gun is 14.3 cm long, and a constant frictional force of 0.036 N exists between barrel and projectile. With what speed does the

280. ## physics

A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 25 N to stretch the bands 1.1 cm. a) What is the equivalent spring constant of the rubber bands? Answer in units of N/m b) How much force is required to pull

281. ## Engish

The neighbors' new dog is small, quiet, and shy

282. ## chem

How to find the %(W/V) of 134mL of a 0.610 M solution of Mg(OH)2

283. ## science

how does running water contribute to weathering, erosion, and deposion?

284. ## Psychology

Discuss the extent to which the brain has the capacity for repair. Include concepts such as plasticity, collateral sprouting, substitution of function, and neurogenesis.

285. ## Algebra 3-4

what is 40x^6-32x^8 factored completely?

asked by Brianna Esparza
286. ## Math

Every 6th customer gets a coupon for juice and every 9th gets a coupon for snacks get a coupon for snacks which customer is the first to get both?

A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)

Only need help with part c Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth

289. ## physical Science

When a light bulb is rated at 60 W ft what do this mean?

290. ## math

kyle spent 3 hours each day for 4 days making a song. Write and solve an equation to find the number of total hours Kyle spent making his song

291. ## 8th grade math

y=1/4x-1 1/2y=x-2 2x+3y=3 3y=5-2x 4x-y=3 4x=y=1 I don't understand this can someone please help me! This is Systems of Equations please work out the problem and explain it how to do it.

292. ## health

what should be taken into consideration when cultural bias occurs in age care

293. ## Physics

The density of air near the earth's surface is 1.29 kg?m^3. If a helium balloon with a mass of 1 kg floats in air without rising or falling,what is the minimum volume of helium in the balloon? (presume that the mass of the material making up the balloon is

294. ## physics

A load of 46 N attached to a spring that is hanging vertically stretches the spring 0.10 m. What is the spring constant?

295. ## Math

one postive number is 9 more than twice a number if product is 893 find the numbers

296. ## physics

When a mass of 28 g is attached to a certain spring, it makes 19 complete vibrations in 3.9 s. What is the spring constant of the spring? Answer in units of N/m

297. ## physics

a 100 V DC signal is applied to four resistors as shown in Fig. 5. The values of the resistors are 20 ohm, 40 ohm, 60 ohm and 80 ohm. What is the voltage across the 40 ohm resistor?

298. ## physics

two unknown resistors a and b are connected together. when they are connected in series their combined resistance is 15 ohm. When they are connected in parallel, their combined resistance is 3.3 ohm. What are the resistances of A and B?

299. ## physics

A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 33 N to stretch the bands 1.3 cm. A) what is the equivalent spring constant of the rubber bands? Answer in n/m B) how much force is required to pull the cup

300. ## Algebra

3/16=h/2 what is the value of H

301. ## Physics

A 10 g particle is moving to the left at 20 m/s. How much work must be done on the particle to cause it to move to the right at 46 m/s?

302. ## Physics

1. A car starts from rest and accelerates uniformly at 3.0 m/s2. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2. How long does it take the second car to overtake the first car? 2. A ball is thrown downward

303. ## Physics

A computer is reading data from a rotating CD-ROM. At a point that is 0.037 m from the center of the disc, the centripetal acceleration is 130 m/s2. What is the centripetal acceleration at a point that is 0.064 m from the center of the disc?

304. ## physics

A satellite orbits a planet at a distance of 3.80 108 m. Assume that this distance is between the centers of the planet and the satellite and that the mass of the planet is 3.90 1024 kg. Find the period for the moon's motion around the earth. Express the

305. ## physics

Two banked curves have the same radius. Curve A is banked at an angle of 11°, and curve B is banked at an angle of 17°. A car can travel around curve A without relying on friction at a speed of 18.5 m/s. At what speed can this car travel around curve B

306. ## physics

A woman is riding a Jet Ski at a speed of 27.9 m/s and notices a seawall straight ahead. The farthest she can lean the craft in order to make a turn is 21.0°. This situation is like that of a car on a curve that is banked at an angle of 21.0°. If she

307. ## math

if 24 apples are needed to make 3 pies, how many apples are needed to make 2 pies

308. ## Chemistry

at 25C and 795 torr, carbon dioxide has a solubility of 0.0356 M in water. What is the solubility at 25 C and 2070 torr? ____ M I know that at a given temperature, the solubility of a gas in a liquid is directly proportional to its pressure but how would

309. ## Algebra

1.How do you factor (-5t^2+50t+5) ? I keep getting (-5)(t-1)(t+1), but when I check it by foiling and multiplying, it doesn't equal the original trinomial. 2. Can I multiply (-3x-2x+8) by (-1) to get rid of the negative coefficient? If I don't, it will be

310. ## Physics please help its urgent i need help

A crate of oranges weighing 209 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.41 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.5 m/s. (a)

311. ## Psychology

Explain how even though images appear on the retina in two-dimensional space, we are able to perceive objects in three-dimensions ====== can someone answer this please? or give me an idea of this question? thanks

312. ## math

B=1.69 (sqrt (s)+4.45)-3.49 solve for s

313. ## physics

What is the free-fall acceleration in a location where the period of a 2.03 m long pendulum is 2.86 s s? Answer in units of m/s squared

314. ## math

2x+3y=3 3y=5-2x 4x-y=3 4x=y=1 solve and explain please

315. ## Algebra 3-4

Solve x^2 + 2x - 8 = 0

asked by Brianna Esparza
316. ## math

HOW MANY DIFFERENT NINE-DIGIT COMBINATIONS ARE POSSIBLE. EXPRESS RESUILT AS A POWER OF 10

317. ## spelling

which of the following word groups are punctuated correctly? It rained everyday of our vacation nevertheless, we had a wonderful time. It rained everyday of our vacation, nevertheless; we had a wonderful time. It rained everyday of our vacation;

318. ## Chemistry

At -15.0 C, what is the maximum mass of fructose (C6H12O6) you can add to 3.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it dissolves in water. I'm confused on how you pick the

319. ## Math

It usually takes 55 minutes to get from Lakewood to Oakdale. This morning the train is 10 minutes early. How many minutes did the trip take?

320. ## Physics

You want to push a 66-kg box up a 30° ramp. The coefficient of kinetic friction between the ramp and the box is 0.35. With what magnitude force parallel to the ramp should you push on the box so that it moves up the ramp at a constant speed? N Physics -

asked by I dont know y no one is helping me :/
321. ## geometry

(3x-8)+(2y-17-90

322. ## physics

A visitors to a lighthouse wishes to determine the height of the tower. The visitor ties a spool of thread to a small rock to make a simple pendulum, then hangs the pendulum down a spiral staircase in the center of the tower. The period of oscillation is

323. ## physics

The coefficient of static friction between a block and a horizontal floor is 0.35, while the coefficient of kinetic friction is 0.12. The mass of the block is 4.5 kg. A horizontal force is applied to the block and slowly increased. (a) What is the value of

324. ## physics

What is the wavelength of an X-ray photon with energy 6.0 (6000 )? (Hint: 1 = 1.60 10-19 joule.)?

325. ## physics

what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?

326. ## 3rd grade math

write the missing fraction or mixed number for each number line 0,1/3,2/3,1,____,____,____,______,2 1/3 3

327. ## biology

this part of organism usually found underground, what organele conspicuously absent?

328. ## math

4x-y=3 4x+y=1 show work and explain

329. ## geometry

On a map, Town A is 8 km due south of Town B, Town C is 9 km from Town A, and Town C is 3 km from Town B (see figure below). Find the bearing from Town A to Town C and the bearing from Town B to Town C.

330. ## geometry

To find the distance from the house at point D to the house at point E, a surveyor measures ÚDFE, which he finds is 73‹40'. The distance from the house at point D to point F is 15 ft, and the distance from point F to the house at point E is 28 ft.

331. ## geometry

Determine how many triangles with the following measurements can be formed: ÚA = 67.5‹, a = 43, b = 59.

332. ## geometry

In a triangle, find the value of a if ÚA = 75‹15', b = 4, and c = 9.

333. ## geometry

A farmer has a triangular field with sides that measure 120 yards, 170 yards, and 220 yards. Find the area of the field

334. ## health

The pancreas produces _ _ _ _ _ _ _ _ It also produces _ _ _ _ _ _ _ Please help thank you

reply to my post earlier julie thnk u please

336. ## Chemistry

5.70 g of NH4Cl is added to 13.3 g of water. Calculate the molality of the solution.

A 11 mL sample of a solution of AlBr3 was diluted with water to 23 mL. A 15 mL sample of the dilute solution was found to contain 0.045 moles of Br-. What was the concentration of AlBr3 in the original undiluted solution? answer is 2.09 but i cant get it.

338. ## introductory physics concept

I know that a capacitor does not allow charge to flow through it because its two conducting plates are separated by a dielectric (insulating material) but then how does a current flow through a circuit? Is it because at a certain DC voltage (almost like a

339. ## biology anyone..

please i need this by tomorrow. if nucleii are 3 micrometres long, how big are the cells? these r 2 questions i not get.

340. ## Math

Does the order pair make the equation y equals 5 x+3 true 1'8

341. ## Chemistry

What must be the molarity of an acetic acid solution if it has the same percent ionization as 0.150M HC3H5O2 propionic acid,Ka=1.3*10^-5 )?

342. ## chemistry

What volume does 16.0g of o2 occupy at stp

343. ## college physics

A 1500 wrecking ball hangs from a 16 -long cable. The ball is pulled back until the cable makes an angle of 23.0 with the vertical.

344. ## English

Whats the difference between honoring women vs honoring women of. Color