# Questions Asked onFebruary 6, 2016

1. ## Physics

A block of mass m = 2.00 kg is released from rest h = 0.500 m from the surface of a table, at the top of a theta = 30.0° incline. The frictionless incline is fixed on a table of height H = 2.00 m. (a) Determine the acceleration of the block as it slides

2. ## English Grammar

Prepositions 1. The examination is ____ hand. 2.The office is closed ____ the second and fourth saturday.

3. ## LIFE ORIENTATION

FOUR WAYS IN WHICH SPORT CAN SUPPORT NATION BUILDING.2 TWO ISSUES IN SPORT THAT IMPEDE NATION BUIDING.3.WHAT CAN TRIGGER SPECTATOR AGGRESSION IN SPORT.

4. ## English Grammar

Change to Affirmative 1.No man in the street came forward to help her. 2.None of them were bad. 3.Nobody was present in the family function.

5. ## Spanish

Conjugate the following irregular verbs in the simple present tense (Indicative). 6. tener (to have) yo ________________________ 7. tener (to have) nosotros ________________________ 8. venir (to come) tú ________________________ 9. venir (to come)

6. ## math

The master bedroom of Julie's new apartment measures 10.5 feet by 16 feet. What is the area of the room?

7. ## statistics

the ages of the members of a gym have a mean of 44 years and a standard deviation of 12 years. what can you conclude from Chebyshev's theorem about the percentage of gym members aged between 26 and 62?

8. ## Physics

Real world trampolines lose energy since they are damped springs with much internal friction. How much energy does the sumo wrestler lose on each bounce in this situation? Information I was given: mass=400 kg gravity=10N/kg k = 12000 N/m I also know from

9. ## statistics

1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions. Instead, use the Z

10. ## math

two boats p and q are at points whose position vector are 4i+8j and 4i+3j respectively. both of the boats are moving at a constant velocity of p is 4i+j and q is 2i+5j. find the position vectors of p&q and pq after t hours, and hence express the distance

11. ## physics

The vector position of a particle varies in time according to the expression r with arrow = 6.60 i − 9.00t2 j where r with arrow is in meters and t is in seconds. (a) Find an expression for the velocity of the particle as a function of time. (Use any

12. ## sinusoidal functions

State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d

13. ## math

Which of the following is an example of a variable expense? A rent B groceries C wages D car insurance cant figure this out! help?

14. ## Chemistry

Equilibrium is established between Br2(l) and Br2(g) at 25.0*C. A 250.0 mL sample of the vapor weights 0.486g. What is the vapor pressure of bromine at 25.0*C, in mmHg?

15. ## algebra

June has \$1.95 in dimes and nickels. She has a total of 28 coins. How many of each type of coin does she have?

16. ## Chemistry

An aqueous solution is composed of 7.50 g NaCl (MM = 58.44 g/mol) diluted to 0.100 L. Calculate the osmotic pressure of the solution at 298 K a. 5.83 atm b. 9.22 atm c. 18.3 atm d. 62.8 atm

17. ## pysics

The quantity of heat required to raise the temperature of 500g of copper from 16oc +116oc assuming the specific heat capacity of copper =400j /kgk

18. ## Physics

A ball is projected horizontally from the edge of a table that is 1.14 m high, and it strikes the floor at a point 1.40 m from the base of the table. It's initial velocity is 2.9 m/s. How high is the ball above the floor when its velocity vector makes a

19. ## chemistry

. In the following reaction: Fe2O3 + 3C → 2Fe + 3CO; how many grams of C are needed to react with 16.5 g Fe2O3?

20. ## Maths

A pedestal is constructed in the form of frustum of a pyramid, the sides of the square ends of the frustum being 360cm and 160 cm and slant height 260cm. Find volume , lateral surface area including area of the top and the cost of construction @ rs.50

21. ## Math

For each of the functions below, state the domain and range, the restrictions, the intervals of increasing and decreasing, the roots, y-intercepts, and vertices. b) f(x)=+squareroot x−2

22. ## math

A parking garage charges \$K for the first hour or fraction of an hour and \$2/3K for each hour thereafter. Bill parked 7 times as long as Ray. If Ray parked for 1/2 hour, Bill paid _____ times as much as Ray.

23. ## Math

Poor Delbert has been asked to do some tiling at home. He doesn't really understand the pattern. Can you help? How many black tiles to white? (1to every 2) There are 12 tiles in the pattern. Suppose there ere 60. How many black tiles will Delbert need

24. ## math

Two trains started at the same time from the same station and traveled in opposite directions.One traveled at a rate of 50mph and other at a rate of 60mph.In how many hours were they 660 miles apart?I want to know if my answer is correct. 50t+60t=660

25. ## math

An aeroplane taking off from a field has a run of 500 meters. What is the acceleration and take off velocity if it leaves the ground 10 seconds after the start ?

26. ## physics

A 3.6-kg cat is sitting on the edge a merry-go-round that is spinning at 2.7 rad/s. The diameter of the merry-go-round is 5.6 m. How large is the static friction between the cat’s paws and the surface of the merry-go-round if it does not slip off?

27. ## math

31 gallons of gas cost \$82.15. what is the unit rate for 1 gallon of gas

28. ## math

if the unit price for a cantaloupe cost 0.65 per pound and sally pays 1.95 for a cantaloupe how many pounds does her cantaloupe weigh? A. 2 pounds B. 3 pounds C. 4 pounds D. 5 pounds

29. ## Calculus

The fuel consumption (gallons per hour) of a car traveling at a speed of v miles per hour is c = f(v). 1) What is the meaning of the derivative f ' (v)? answer: rate of change of fuel consumption as miles go up 2) What are its units? answer: miles per

30. ## math

4 Luke can purchase a 12-pound item from several different retailers. Which of the following is the best buy? A Buy online for \$15 plus pay shipping and handling costs of \$0.79 per pound. B Buy online for \$17 plus pay shipping and handling costs of \$0.69

31. ## Calculus

How do I use three vertices to calculate the area of a triangle? The three vertices are (0,0), (2,1), and (-1,6). I've figured out that the equations of the lines that make up the triangle are y = -6x, y = (1/2)x, and y = (-5/3)x + 4.34ish. Now I have to

32. ## chem 12

1.00 mol of N2O4 and 1.00 mol of NO2 are placed in an 800 mL container. Calculate the initial concentrations of each gas. N2O4= 1.25 mol/L NO2=1.25 mol/L When equilibrium is reached, the concentration of NO2 increases by 0.50mol/L. Calculate the

33. ## math

If 14 out of 20 people like chocolate milk, what percent of the people do not like chocolate milk? a.5% b.30% c. 40% d.70%

34. ## maths

a bicycle wheel has a diameter of 42 cm.how many revolutions will it make to cover a distance of 13.2km

35. ## Is444

A newspaper carrier has \$5.30 in change. He has ten more quarters than dimes but two times as many nickles as quarters. How many coins of each type does he has?

36. ## calc

The quantity (in yards) of a certain fabric that is sold by a manufacturer at a price of p dollars per yard is Q = f(p). 1) What is the meaning of the derivative f ' (16)? 2) What are its units? 3) Is f ' (16) positive or negative? Explain.

37. ## master chemistry

The rate constant of a chemical equation has increased from 0.100s^-1 to 2.70s^-1 upon raising the temperature from 25C to 45C. Find the activation energy. So far I done 3.30=(Ea/8.314)(-2.11x10^-4)

38. ## Calculus

An architect wants to design a window in the shape of a rectangle capped by a semicircle. If the perimeter of the window is constrained to be 24 feet, what dimensions should the architect choose for the window in order to admit the greatest amount of

39. ## Physics 30

A. Calculate the net force on q2? b. calculate the net force on q3? q1= +2.0 MC q2=+3.0 MC q3=+6.0 MC q1-----30cm-----q2-----------45cm----------q3

40. ## Physics 30

calculate the netforrce on q2? calculate the net force on q3? q1=+3.0 MC q2=+3.0MC q3=-6.0MC q1-------20cm-------------q2 I I I 50 cm I I I q3

42. ## physics

Two 4 meter lorry cars are moving along the same direction on a straight road with a constant speeds of 70 km/hr and 90km/hr. if a passenge falls asleep when the faster car is 20m behind the slower car but wakes up after it is 20m ahead of the slower car.

43. ## maths

In triangle PQR QM perpendicular to PR, RN perpendicular to PQR, H is ortocentre of triangle PQR then PNHM is -----

44. ## physics

a ball thrown by a boy is caught by another after 2 second soome distance away in the same level. If thr angle of projection is 30 degree, the velocity of projection will be?

45. ## Math and Physic

an egg parachute was drop at a building with a time of 7.57 sec. what is the height of the building and velocity.

46. ## physics

What's the solution of a body of weight 100N resting on a plane which is inclined at 30° to the horizontal with the components of the weight parallel and perpendicular to the plane?

47. ## Physics

A rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released.

48. ## Math

Poor Delbert has been asked to do some tiling at home. He doesn't really understand the pattern. Can you help? How many black tiles to white?(1 to every 2) What is the proportion of black tiles to the whole pattern(1/3) What is the proportion of white

2x^2*4x=0

50. ## Maths lit, economics, lifesciences, agriculture, lifeorientation, sepedi, english

What career would I do nd which course will I do at University?

51. ## Math

Can you show me how to do this problem: Find the missing dimensions of triangle XYZ. The info it gives me is side X has the number 2, Side Y has the letter m , and Z has the letter n. What do I do for this?

52. ## SyEd

IUPAC name of (CH3)3.C.CH2

53. ## Math

Can you show or explain how to do this? Julio uses a scale of 1/8 inch= 1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?

54. ## Math

Fehima has 4 times as many dimes as quarters.If her dimes and quarters have a value of \$3.90, how many of each coin does she have?I want to know if my answer is correct. D=4(q) 0.10d+0.25q=3.90 0.10(4q)+0.25=3.90 0.40q+0.25q=3.90 65q=3.90 65 q=0.06 65q

55. ## statistics

"using the descriptive statistics for the weight of the babies in ounces, suppose a friend of yours has given birth to a 10 pound 3 ounce baby"

57. ## English Grammar

Please check if its correct Change from Positive to Negative 1.None of them were bad - All of them were good 2.Nobody was present in the funeral function -Everybody was absent from the funeral function

58. ## English Grammar

Change it to positive without changing the meaning. No man in the street came forward to help her. Should it be "Every man in the street stood where they were."??

59. ## english

Which value is reflected in Heracles ?

60. ## Algebra

the length of bill's backyard swimming pool is 60ft longer than the width of the pool. the surface area of the water is 1600 square feet. what is the width of the pool?

61. ## physics

A disc has a mass of 340kg, and is mounted to a frictionless axle and is free to rotate around it. Model the shape of the disc as a hollow shaft on axis where the inner and outer diameters are 600mm and 1200mm respectively. A wire is wrapped around the

62. ## Geography

Draw a table like the one below into your exercise book. With reference to the Simple model of an ecosystem (on page 2), suggest possible ways that each of the components of an ecosystem can influence each other. Climate Vegetation Fauna Landforms &

63. ## ^HYDRAULICS AND HYDROLOGY^

Pls...,need help. QUESTION=Water flows through a pipe of diameter 300mm with a velocity of 5m/s.if the coefficient of friction is given by f=(0.015)+(0.08/Re^0.3) where Re is the Reynoid number. Take kinematic viscosity of water as 0.01stoke. *Find the

64. ## geography

Suggest 2 ways people in LEDCs could prepare for an earthquake...and also suggest 2 ways people in MEDCs could prepare for earthquake...Thank you for all your help..

65. ## SOCIAL STUDIES

How did the results of the presidential election in 1860 influence South Carolina’s decision to secede from the Union?

66. ## physics (mechanics)

find the constant force necessary to accelerate a car of mass 1000kg from 15m/s to 20m/s in 10s against resistance of 270N ? pls show work (answer is 770N just in case to check)

67. ## English

What's a good website to check writings: paragraphs? If free much better.

68. ## social studies help

How did the Mexican-American War ignite a conflict over slavery between the North and the South?

69. ## Calculus with Analytical Geometry

Find the present value (PV) of the annuity with each payment of \$3500 at the end of each year for 3 years in an account that pays 6% compounded annually.

70. ## Maths

In a group of 60 people, 27 like cold drinks and 42 like hot drinks and each person likes at least one of the two drinks. What is the probability that a person chosen at random likes both coffee and tea?

71. ## physical science

Determine the magnitude and direction of a resultant force on 500N,200N and 300N by calculating or by accurate construction and measurement use scale 10mm=50N

72. ## Algebra

the length of bill's backyard swimming pool is 60ft longer than the width of the pool. the surface area of the water is 1600 square feet. what is the width of the pool?

73. ## physics

calculate numerical value of current in inductor resistant circuit. l=1mH r=3k (ist=1ma at t=0) i1(t=1us)in ma. i0=1ma my work. i=i0(1-e^-(t/T)) 1*10^-3(1-e^(-1/0.33) i=0.952ma this is wrong do I need to add initial current to this(1ma). why is this

74. ## Math

Please help. Julio uses a scale of 1/ 8 inch  1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?

75. ## Math

9/2 written as an integer or simplified fraction

76. ## Math

What is the formula The value of Dave's Camaro decreased by 30%. The car is worth \$14,000. What was the purchase price?

77. ## Physics

Two capacitor plates are equally and oppositely charged. They are separated by 1.30 cm. An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where

(2√5+3)(2√5+3)= a + b√c+d Figure out the binomial to find a,b,c,d

79. ## math

which pair of ratios can form a true proportion 9/12,5/8 25/20,16/21 6/27,2/9 7/12,10/15

80. ## Physics

Tow force are acting 50 degree apart, one of 200g grams and one of 300 gram. Fine the resultant force, its magnitude and the direction it makes with the original tow vectors

81. ## Chmistry

how to calculate ph if given contain 0.63g og hno3 pet 100 ml solution

82. ## english

is this sentence a predicate pronounMy boyfriend became my best friend

83. ## Social Studies

How do the branches of government work together?

84. ## math

at a local sports event students paid \$3.00 each and non students paid \$5.00. There were 120 more students at the event than non students. if the total receipts were 2960 how many tickets of each were sold?

85. ## math

Order from greatest to least 1/8,36%,0.05,0.078

86. ## English

Why I can't concentrate to write an essay? I don't want to fail the class. Please, I need help.

87. ## Math

The perimeter of an isosceles triangle is 36 meters.Five times the length of the base is 2 meters less than three times the length of each of the congruent sides.How long is each side of the triangle? Work- a+b+c=36. 5(b)=3(c)-2

88. ## math

Juan's father is 4 times as old as Juan.Twenty-two years from now he will be twice as old as Juan.What are their ages now? My work- 4(F)=J 22(2)=J

89. ## math

Order from greatest to least 1/8,36%,0.85,0.078

90. ## algebra

The sum of two numbers is 19.Five times the lesser number is four more than twice the great.What are the numbers?I'm trying to figure out if my answer is correct. 5(-b+19)=4+2(b) a+b+19 -b a=-b+19 5(-b+19)=4+2(b) -5b+95 =4+2b -2b -95 -2b -7b -7b =-95 -7

91. ## algebra 2

what is the domain for x^2-2x ?

92. ## Math

Can someone help or show me how to do this problem? On a scale drawing of a house plan the master bathroom is 1 1/2 inches wide and 2 5/8 inches long. If the scale of the drawing is 3/16 inches=1 foot, what are the actual dimensions of the bathroom?

93. ## Linear Algebra

True/False question Suppose that A is a 2 x 3 matrix such that A[1, 1, 1]^t = [2, 3]^t = A[2, 3, 4]^t. Then [1, 2, 3]^t belongs to the nullspace of A. I have no idea how to start this question/what it means.

94. ## Math

Ingrid walked her dog and washed her car . She spent 3 times as much time washing her car as she did walking her dog. it took Ingrid 1 1/2 hours to wash her car .How long did it take Ingrid to walk her dog ? Equation: Variable represents:

95. ## math

the distance between spice island and Kay island is 3.4 inches on a map if the scale on a map is 1inch=25 miles what is the actual distance between the 2 islands? A. 28.4 miles B. 75 miles C. 85 miles D. 850 miles

96. ## Do I have time

Today is Saturday in New York my birthday is in 3 day and my report is due in three days so I have written 2 paragraph I have to write 6 I have Monday off this report is about Dr.Daniel Hale Williams I am turning 10 in the fourth grade plz tell me if I

97. ## Accounting 100

a) Purchased equipment on account for \$950 b) Paid \$600 on equipment purchased in transaction (a) How do I post (b) to the journal?

98. ## science

a 2kg stone is dropped from the top of a 20 buliding (a) at what height does its potential energy energy equal to its kinetic energy?

99. ## Pre-Calculus

f(x) = 7x^3 + 8x^2 - 3x + 8 Find f(7) using synthetic division, and list the numbers in the bottom row of the division. My answer: The numbers in the bottom row are 7, 58, 403, and 2829. The answer is 7x^2 + 58x + 403 + 2829/x - 7.

100. ## business studies, maths lil, tourism and economics

if i am doing these subjects what can I be pls help

101. ## business studies, maths lil, economics and tourism

Iam doing, economics, business studies, tourism and maths lil can I be a manager pls help meee

102. ## Algebra

Given the equations y=16 and y=3. Determine the slope and y-intercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the y-intercepts are?

103. ## maths

the diagonal of a rectangular plot is 250m long. If the length of a side is 125m, find the angle of the diagonal makes with this side

104. ## Pre-Calculus

x = 2/7 is a root of 49x^3 - 126x^2 + 60x - 8 = 0. Factor the polynomial completely and list all real solutions. My answer: (x - 2)(7x - 2)^2 = 0 factored, and the solutions are x = 2 and x = 2/7.

105. ## maths

how to construct 57.5 degree angle using a ruler and a compass

106. ## Spanish

Empezar in Affirmative tu positive, negative and empezar in negative usted and ustedes commands

107. ## Physics

A body of mass m falls from rest through the air. A drag force D = bv^2 opposes the the motion of the body. The acceleration due to gravity is g. A) What is the initial downward acceleration of the body? B) After some time the speed of the body approaches

108. ## physics

If you jump off a 10 meter cliff on the Moon, and the acceleration of gravity is 1.6 m/s^2. How fast are you going when your feet hit the bottom of the cliff?

109. ## calculus

How to calculate the volume of rotating object formed by the area between curve y=x^2 and y=3x which is rotating through : a. x axis b. y axis ; using skin tube methode

110. ## math

What is -(-(-8)) I believe it's -8 because of the double negative if you work inside the parentheses first?

111. ## Verbal reasoning

which words among the three (Rapid;jump and fly) are best opposite in to these three words: Slow;crawl and fly ?

112. ## Math

Given the equations y=16 and y=3. Determine the slope and y-intercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the y-intercepts are?

113. ## chemistry

how do i decide which stationary phase to choose if solute i want to separate is relatively non-polar??

114. ## Math

On an airplane there are two seats on the left side in each row and three seats on the right side. There are 150 seats altogether. Can someone help me?!

115. ## Math

If a valid time on a 12 hour time period has the hour hand and minute hand switched, how many times will that result in another valid time? I have found 11, which is when the hour hand points at the same place as the minute hand. I know there is much more,

116. ## Writing

What types of essays are there, and when do you use each one? It's an assignment.

117. ## English

I have to write an essay, but I feel that I really need help, don't know how to structure one, connections and so on. What do you suggest I need to do to start off?

118. ## Calculus (polar coordinates)

Use polar coordinates to set up the double integral x dA, where the bounds are given by the region lying in the intersection of the 2 circles r = 2 sin (theta) and r = 2 cos theta. Thanks for any help!

119. ## math

Tom and Burt are to take turns removing either 1 or 2 marbles from a circle. There are 7 marbles. The person selecting the last marble is the loser. If Tom goes first and each of them makes the best possible removals, then who will lose the game?

120. ## Physics

A stone is dropped from the roof of a high building. A second stone is dropped 1.08s later. How far apart are the stone when the second one has reached a speed of 15.0?

121. ## physics & math

If you jump off a 10 meter cliff on the Moon, and the acceleration of gravity is 1.6 m/s^2. How fast are you going when your feet hit the bottom of the cliff?

122. ## physics

Two capacitor plates are equally and oppositely charged. They are separated by 6.30 cm. An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where

123. ## Social Studies

(blank) taught that people need a strong ruler to maintain order -daoism (i picked) -legalism -buddhism -none of these

124. ## CALOC-AN ELEM.

THE TENS DIGIT OF TWO-DIGIT NUMBER IS 4 MORE THAN THE ONES DIGIT.WHAT NUMBERS CAN BE?

125. ## math

A man seated on a chair has a mass of 85 kg. Known that the mans weight is distributed so the chairs back legs support twice as much as the front legs. What is the mass taken by each leg?

126. ## PHYSICS

how far apart are two point charges of 5.0x10^-6 C and 6.0x10^-6 C if they produce an electric force on each other of 0.62 N?

127. ## Physics 30

Two point charges objects produce an electric force on each other of 3.6x10^-2 N. What is the electric force between them if the distance is increased five times?