# Rita

Newest questions and responses by Rita
1. ## computer

What is the formal name of Internet

2. ## geography

What is glacier

3. ## physics

Describe an experiment to determine the saturation vapour pressure of water in the temperature range 25 degree Celsius to 70 degree Celsius. Sketch the curve you would expect to obtain

4. ## physics

Explain why ice is formed on the aluminium lumps and not on the walls of the beaker

5. ## physics

How would you determine the value of the specific latent heat of steam in the laboratory? What precautions are necessary to obtain an accurate results

6. ## physics

Explain the statement: the saturation vapour pressure of water at 60 degree Celsius is 149.4 mm of Mercury. Thanks

7. ## physics

What is meant by the statement that the specific latent heat of steam is 2260000jkg

8. ## physics

Explain why food can be cooked more rapidly by boiling it in salt water than by boiling it in pure water

9. ## physics

What are the differences between evaporation and boiling

10. ## physics

Pls help me. Explain the following a. When methylated spirit is poured on the skin, it has cooling effect, b. A piece of ice at 0 degree Celsius cools a drink more effectively than the same mass of cold water at 0 degree Celsius, c Ice floats on water, d.

11. ## physics

Describe an experiment to determine the boiling point of a small quantity of a liquid

12. ## physics

A piece of copper of mass 300 g at a temperature of 950 degree Celsius is quickly transferred to a vessel of negligible thermal containing 250 g of water at 25 degree Celsius. If the final temperature of the mixture is 100 degree Celsius calculate the mass

13. ## physics

Pls help me God will bless you all. A piece of copper ball of mass 20 g at 200 degree Celsius is placed in a 50 g of water at 30 degree Celsius, ignoring heat losses, calculate the final steady temperature of the mixture. Specific heat capacity of

Heat energy

Sequence

16. ## physics

Pls help pls help me solve. Dry steam at 100 degree Celsius is bubbled into 500 g of water originally at 20 degree Celsius. What will be the temperature of the water after 30 g of steam has condensed? ( specific heat capacity of water =4200,specific latent

17. ## physics

What mass of ice at -14 degree Celsius will be needed to cool 200 cm of an orange drink from 25 degree Celsius to 10 degree? (specific latent heat of fusion of ice=336000,specific heat capacity of ice=2100 specific heat capacity of water=4200

18. ## Math

Which expression are equivalent to 5+4.2-(-3)? 5+(-4.2)-3 5-(-4.2)+3 5-4.2-3 5+(-4.2)-3

19. ## physics

Calculate the angular velocity of a swinging pendulum whose length is 125cm

20. ## Physics

When a 2Kg block of metal at 600°C is put into water at its boiling point, 0.5 kg of steam is released. Find the specific heat capacity of the metal?

21. ## Math

If it is 750 calories per hour how many hours would a person have to jump rope in order to lose 1 lb ?

22. ## Math

One picked 21/2 times as many apples as a second man. A third man picked half as many as the second man. Together they picked a total of 240 apples. How many apples were picked by each man.

23. ## Physics

A siren emits a sound of frequency 1200 kHz. With which frequency is it received by a car moving at a speed of 20 m/s. a) Away from the siren? b) Towards the siren?

24. ## math algebra

if f(x) = x+1/x^2-9 and g(x) = x/x-3, find a) the domain of f(x) b) the domain of g(x) c) (f+g) (x) d) the domain of (f+g) (x)

25. ## Science

When is the end of the world

26. ## maths

rita had 5/6 of cake.she ate 2/3 of it .what part of the cake did she eat?

27. ## Probability and Statisics

Suppose that 20% of the adult women in the United States dye or highlight their hair. We would like to know the probability that a SRS of size 200 would come within plus or minus 3 percentage points of this true value. In other words, find probability that

28. ## maths

a circular pool is 300 and height is 250 find the radius

29. ## Algebra

sorry I posted the last question wrong. The question is Simplify 6 over the square root of 3+2.SOrry Thanks

30. ## Algebra

Could you please help me with this question? Simplify 6/Square root of 3-2. Also, could you help me with the steps on how to figure it? Thank you. a.4/square root of 3 b. 12-6 to the square root of 3 c. Square root of 3-2 d. 3

31. ## statistics

Four percent of DVD players manufactured by an electronics company are defective. Suppose six DVD players are randomly selected from the production line. Each DVD player is determined to be defective or non-defective. a. What is the probability that none

32. ## English

What are the reasons why boys should not help at the kitchen?

33. ## Language Arts

“Train Tune” by - Louise Bogan Back through clouds Back through clearing Back through distance Back through silence Back through groves Back through garlands Back by rivers Back below mountains Back through lightning Back through cities Back through

34. ## Language Arts

"Full Fathom Five" by - William Shakespeare Full fathom five thy father lies; Of his bones are coral made; Those are pearls that were his eyes; Nothing of him that doth fade But doth suffer a sea change Into something rich and strange. Sea nymphs hourly

35. ## Language Arts

"Full Fathom Five" by - William Shakespeare Full fathom five thy father lies; Of his bones are coral made; Those are pearls that were his eyes; Nothing of him that doth fade But doth suffer a sea change Into something rich and strange. Sea nymphs hourly

36. ## Math

The graph below shows the sales of a popular song each week it was in a Top 40 song chart. which statement most accurately describes the slope of the graph A. The sales increased by 1 hundred thousand every 2 weeks. B. The sales decreased by 1 hundred

37. ## Math

A swimming pool was filled with 600 gallons of water in 20 minutes. What was the rate at which the pool was filled A.25 gallons per minute B.30 gallons per minute *** C.50 gallons per minute D.150 gallons per minute A swimming pool was filled with 600

38. ## Math

The sum of the digits of a two-digit number is 14. The number formed by reversing the digits is 36 more than the original number. What is the original number?

39. ## Chemistry

A solution of NH3 in water has a pH of 11.17. Calculate it's molarity

40. ## trig

The angle relative to the horizontal from the top of a tree to a point 12 feet from its base(on flat ground) is 30*. Find the height of the tree.

41. ## kunwar

why their is gap between railtracks of rail

42. ## Chemistry

Prepare 250ml of 0.2M phosphate buffer of pH 6.4.starting from Na2HPO4,NaH2PO4,0.129N NaOH solution.

43. ## algebra

The atmospheric pressure P in pounds per square inch (psi) is given by P = 14.7 e−0.21 a where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 12.31 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round

44. ## english

a humbly request (from or by)rita in this sentence i use from or by plz tell me quick i have test in tution ???????

45. ## Math-urgent-

What's 11/12 divided by 3/4 in repeated subtraction?

46. ## ap chem

an unknown gaseous hydrocarbon reacts with oxygen to form CO2 and H2O, DETERMINE HEAT OF FORMATION FOR THE HYDROCARBON. the density of the mixture of CO2 and H2O at 1 atm and 200 degree celsius is 0.751g /L and heat of reaction is equal to -2044.5 KJ /MOL

47. ## Algebra

Please Help Me with this problem:Ozark Furniture Company can obtain at most 3000 board feet of maple lumber for making its classic and modern maple rocking chairs. A classic maple rocker requires 15 board feet of maple, and a modern rocker requires 12

48. ## statistics

Suppose that the scores on a reading ability test are normally distributed with a mean of and a standard deviation of . What proportion of individuals score more than points on this test

51. ## eCONIMIC

2. The Theory of the Firm document, the Friedman article, and the information in chapter 4 argue that the main goal of a firm in a market economy is to maximize profit (shareholder wealth) over the long term. However, SEC regulations require U.S.

52. ## math

The sale force of a business consist of 10 men and 10 women A production unit of 6 people is set up at random what is the probability that it will consist of 4 men and 2 women

Compute the simple interest. Assume 1 month to be of a year. Round your answer to the nearest cent. Principal Rate Time Interest \$1,025 4.5% 16 months

54. ## math

Two of the sides of a right angled triangle are 5m nd 12m.find the length of the third side(there are two possible answers)

55. ## Math

Find the least common denominator for the following fractions: 3/4, 19/20, 1/6, 3/5, 8/15

56. ## Discrete Mathematics

Determine whether the given argument is valid: If Socrates was a philosopher, then he wasn’t a historian. Socrates was a historian. So Socrates was not a philosopher.

57. ## math

Define a variable and write an inequality for each of the following. A. When 3 times a number is decreased by 8, the result is at least 2 times the number. B. Ignatz, the Airedale, and Angus, the Scottie, collect bones. Ignatz has 5 more than Angus. They

58. ## math

A. In 1 year Kristen will be four times as old as Danielle. Ten years from then Kristen will only be twice as old as Danielle. How old is Kristen now? B. The greater of two integers is 4 times the lesser. Of the lesser integer is increased by 12, the

59. ## math

1. The largest of five consecutive integers is twice the smallest. Find the smallest integer. 2. When the sum of three consecutive integers is divided by 9 the result is 7. Find the three integers. 3. If each of three consecutive integers is divided by 3,

61. ## physics

why weight of gold varies at 2 different places like panna and ladakh (physics)

62. ## maths

michael has 10 pairs of black socks,8 pairs of white socks&7 pairs of green socks everything is mixed in a drawer. as there is no light he is not able to identify the colour of the socks . how many of the socks will he have to take to match 1 pair

63. ## statistics

A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score? (Hint: Compare the values for ƩX before and after the score was added.

64. ## statistics

14) A population of N = 20 scores has a mean of µ = 15. One score in the population is changed from X = 8 to X =28. What is the value for the new population mean?

65. ## physics

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

66. ## maths

a and b are positive numbers that satisfy the equation 1/a−1b=1/a+b. Determine the value of a^6/b^6+b^6/a^6.

67. ## maths

The angles in triangle ABC satisfy 6sin∠A=3√3sin∠B=2√2sin∠C. If sin^2∠A=ab, where a and b are coprime positive integers, what is the value of a+b?

68. ## maths

Let P=(p1,p2,…,p7) be a permutation of the integers 1,2,…7. For how many permutations P are all seven sums S1=p1,S2=p1+p2,…,S7=p1+p2+⋯+p7 not multiples of 3? Details and assumptions A permutation is a rearrangement of the entire set of objects.

69. ## Physics

How much work must be done on a 500-kg car to accelerate it from 29-km/hr to 112-km/hr?

70. ## resume

I am not a english speaker!!!!!!!! i am writing a resume is this statement correct: I am introducing my work: Student focus teaching professional with instructional experience and multicultural knowledge. Currently one of three teachers at Grovetown High

71. ## english

an interjection is always

72. ## earth

a suggestd answer to a question is a what

73. ## Springfield

Given the fact that there is no national religion in the United States, what application do the ethics of religious testaments have on the average American criminal justice practitioner?

74. ## Physics

A baseball whose mass is 0.25kg is struck by a bat. just before impact, the ball is traveling horizontally ay 40m/s to the left and it leaves the bat at an angle of 30 degrees above the horizontal with a speed of 60m/s. if the ball and bat were in contact

75. ## physics

An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?

76. ## physics

An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?

77. ## Chemistry

Suppose you dissolve 10 grams of HCl gas in 250 ml of water initially at 25 C, what will the final temperature of the solution be?

78. ## Math

The area of Egypt is about 386,700 square miles. The area of Wyoming is about 97, 818 square miles. How many times larger is Egypt than Wyoming? Do I multiply, divide or add?

79. ## algebra

One side of a trianle is 2cm shorter than the base,x. The other side is 8cm longer than the base. What lenghts of the base will allow the perimeter of the trianlge to be at least 30cm

80. ## Math

2^z=1/16 find value of z

81. ## geometery

how long does a piece of wire need to measure to get 18" diameter?

82. ## Calc

How much money will we have in 6 months if we invest \$1000 into an account earning 8% compounded continuously? How long will it take the \$1000 to double? What is the effective rate for 8% compounded continuously that would produce the same accumulated

83. ## math

lisa put one sheet each of blue, green, tan, white and gold paper into a printer. she forgot the order of the colors. what is the probability of lisa's printing on white paper?

84. ## finite math

what is the cost to install new carpet in an 15' by 21' room if the price of the carpet including installation is \$14.50 a square yard?

85. ## eng

What is the pronoun in this sentence: Me Smith gave it one more try before giving up on the mower How does the noun function and what is the pronoun class?

86. ## english

I need help with my one paragraph (8 to 12 sentences in length) assignment. My biggest problem I believe is my topic sentence (which must be the first sentence of the paragraph). Also I need help with transitioning between one of my sentences. The

87. ## algebra

ceate a quadratic equation with the given solutions 8i and -9i

88. ## post

retire in 30 yrs. annual deposits in ira to accumulate 450,000 in 30 years at 10% per year average what is the annual contribution?

89. ## Macroeconomics

According to Classical theory, what are the appropriate fiscal and monetary policies during a recession? According the Classical theorists, what should the government do to reduce unemployment?

90. ## Macro-econiics

If prices are flexible, what occurs when there is a surplus of widgets? If prices are flexible, what occurs if there is a shortage of trinkets?

91. ## Math

X;9, 3, 7, 11, 6. Y;11, 2, 15, 4, 9. Whats the value. The strength. Direction and shared varience

92. ## chem

A solution prepared by dissolving 20.2 mL of CH3OH in 100mL of water @ 25 celcius. The final volume of the solution is 118 mL. Calculate the % by mass. density CH3OH[0.782g/mL], H20[1g/mL] @ room temp.

93. ## math

find the coordinates of the point where the tangent to the curve y=x^3 +x +2 at the point (1,4) meets the curve again. [ans:-2,-8] pls help me i don't understand the question....

94. ## trig

y=7sin20degrees/5

95. ## Pre Calc

the graph f(x)=cos x Which gives the graph of g(x)=-2cos[3(x+(pi/3))]-5 write the equation of g(x) in terms of f(x). Is the question basicly asking for me to do g(f(x))?

96. ## english

what is a direct performative aspect? (as in poetry or drama)

97. ## AP Chemistry

write the keq expression for the following reaction and determine the value of the Keq at 25degree celcius: MnO2(s)+4H+(aq)Mn2+(aq)+2H2O(l)+Cl2(g)

98. ## math

the pea data is;2,3,4,5,6 and the frequency is ; 7,9,5,3,1 find the mean, median, mode and midrange number of peas per pod

99. ## math

Some households were questioned about the numebr of can openers they possessed. The results are indicated in the frequency table shown below: # of openers; 0,1,2,3,4 and frequency;1,8,11,7,1 a. does this dtat appear to be skewed? explain b. How many