# Questions Asked onFebruary 13, 2016

1. ## Algebra 2

How is the expression log 32 - log 8 written as a single logarithm? log 4 log 8 log 24 log 40

2. ## Chemistry-Dr.Bob

The solubility of CO2 in water at 25 degrees Celsius and P CO2= 1 atm is 0.034 mol/L. What is its water solubility under normal atmospheric conditions (in air, carbon dioxide is about 380 ppmv assuming that CO2 obeys Henry's Law?

3. ## physics

At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 291 N/C. At a distance r2 from the charge, the field has a magnitude of 165 N/C. Find the ratio r2/r1. I divided 165/291 and got .567

4. ## life orientation

evaluate how each of the following attitudes and behaviour will be ineffective when dealing with interpersonal conflict 1. passive/introvert 2. aggressive/bully 3. assertive/extrovert

A woman with a genetic disease marries a man who does not carry the disease. It is not possible for their children to carry the disease. The disease must be a) sex - linked b) recessive c) dominant d) cause by an extra chromosome I think the answer is

6. ## chemistry

the reaction of methane and water is one way to prepare hydrogen for use as a fuel: methanw react with water to from carbonmonoxide and hydrogen if you begin with 995g of methane and 2510g of water, 1.which reactant is the limiting reactant? 2.what is the

7. ## physics

To be dimensionally consistent, pressure [M/LT2], density [M/L3], and velocity [L/T] must be related as follows. Select one: a. pressure = density ´ velocity2 b. pressure = density2 ´ velocity c. pressure = density ´ velocity d. pressure2 = density ´

8. ## Math

Richa spends 1/4 of pocket money on chocolates,1/8 on pencils.At the end she had R's 40 left. How much did she have at the beginning? Many solved 25 questions of his math assignment.This was 1/8 of total questions. He does not know 1/5 of the rest. How

9. ## Math

The sum of 8 term of an a-p is 100 while the sum of 20 term is 880 find the sum of 12 term

10. ## biostatics

if height of 300 students is normally distributed with mean 68.00 inch and standard deviation 3.0 in ch. how manystudents have heights greater than 72 inches?

11. ## Physics

Two spherical objects are separated by a distance of 2.97 × 10-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As

12. ## Physics

A car is behind a truck going 18 m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 0.6 m/s2 and that he has to cover the 20-m length of the truck, plus 10-m extra space at the rear of the truck

13. ## Physics

a 35 kg child slides down a 26 degree incline. the coefficient of kinetic friction is 0.33. what is her speed after sliding for 2.5 seconds starting from rest?

14. ## English

Write a narrative essay on "the new boy"

15. ## Physics

a body is dropped from rest at a heigth of 80m above the ground. (1)what is the speed just before it hits the ground?.(2)how long does it take to reach the ground?.

16. ## physics

A stone of mass 0.7kg is projected vertically upward with a speed of 5m/s.calculate the maximum height reached. [Take g=10m/s^2 and neglect air resistance]. "

17. ## Statistics

A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows: one column has number of service calls (X) those numbers are 0 1 2 3 4 5. The next column Probability P

18. ## English

Consider the compound words blackboard and outfox and the relationship of their meanings to the meanings of the words that make them up. In what ways do these compound words show a degree of nonarbitrariness in their form-meaning connection? Will this true

19. ## math

Find the three consecutive odd numbers whose sum is 147.

20. ## Math

A rectangle ABCD is inscribed in a circle of radius 'a'. Find the 'area of the rectangle' function and state the domain.

21. ## Chemistry

Consider a sample of excited atoms that lie 3.211 × 10–19 J above the ground state. Determine the emission wavelength (in nanometers) of these atoms.

22. ## science chemistry

A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.03 nm. It then gives off a photon having a wavelength of 396.9 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.

23. ## American history 1

What restriction did Spain place on American trade? The Spanish would allow Americans to buy only Spanish goods. ****The Spanish closed the West Indies to American trade. The Spanish prohibited Americans from trading with Britain. The Spanish closed New

24. ## American history 1

which word refers to a promise to pay back money invested in the American Revolutionary War effort? precedent speculator ***inauguration bond ***-answer

25. ## Trigonometry

In a figure, ABCD is a rectangle in which AD=43.7 cm, DE=100 cm and EDC =27°, where E is a point above C making a rught angled triangle DEC above the rectangle. Find angle EAD. I found the other parts of this question but thjs one's difficult. I assumed

26. ## math

gleo bought a new car it cost 23500 each year it loses 15% of its value what would it be worth when its 15 years old

27. ## algebra

A cashier has a total of 34 bills, made up of ones, fives, and twenties. The number of fives is one less than the number of twenties. The total value of the money is \$237. How many of each denomination of bills are there? (Hint: Let x = the number of ones,

28. ## algebra

A rental truck costs \$50 plus \$0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is \$70.

29. ## Trig

Find the exact value of csc 4pi/3 What I have determined thus far: 4pi/3 = 60 degrees sin = square root of 3/2

30. ## Trig

If cot theta = -12/5 and the terminal side of theta lies in quadrant II find secant theta

31. ## algebra

A rental truck costs \$50 plus \$0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is \$70. Solve part (b)

32. ## Physics

Do the following calculations for a 1150 kg car. a. How much work must be done on the car to accelerate it from 0 to 60 km/h. **** Hi I am looking for advice on my questions below. This is my attempt at answering them.. Am i at least on the right track?

33. ## maths( sets )

in the class of 30 leaners 17 plays football 15 leaners plays volleyball, 12 leaners rugby 9 leaners plays volleyball only and 3 leaners plays rugby only.all leaners plays atleast one of three sports.use the venn diagram to find the number of leaners who

34. ## chemistry..

(1) The same quantity of electricity is passed through 2voltameters connected in series, one copper voltmeter with copper electrode in a copper(ii) tetraoxosulphate(vi) solution. The other platinum electrode in a dilute solution of tetraoxosulphate (vi)

35. ## Chemistry- Dr. Bob222

What is the final temperature and state of water when 8.50 kJ of energy is added to 10.0 g of ice at 0 degree Celsius. Helpful information: Cs (ice)= 2.1 J/g•C Heat of vaporization (water)= 40.7kJ/mol Ca (water)= 4.184 J/g•C Heat of fusion (water)=

36. ## Geometry

A plane takes off at an angle of 24 degrees with the ground. How high in feet is the plane after its flight path is 3 miles long

37. ## life orientation

explain the meaning of intra and inter personal conflict and give an example of each to demonstrate understanding

38. ## english

Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet.

39. ## Physics

A pole vaulter has 3500J of energy when he crosses a bar 7 metres high. How much kinetic energy will he have before he reaches the ground?

40. ## Geometry

A surveyor is 130 feet from a tower. The angle of elevation to the top of the tower is 32 degrees. Find the height 81.2 feet?

41. ## AppliedStats

Suppose that you bought a stock 6 years ago at \$12 . The stock’s price at the end of each year is shown here. Year 1 2 3 4 5 6 Price 10 14 15 22 30 25 a) Compute the rate of return.

42. ## physics

When point charges q1 = +8.9 μC and q2 = +7.6 μC are brought near each other, each experiences a repulsive force of magnitude 0.10 N. Determine the distance between the charges. I got 6.08 m

43. ## physics

A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman applies a horizontal force with magnitude 37.5 N to the box and produces an acceleration of magnitude 2.80 m/s2, what is the mass of the box?

44. ## Chem

4 NH3 + 3 O2 --> 2 N2 + 6 H2O a.) Assume 3.0 mol O2 completely reacts. Calculate the moles required for the other reactant. Calculate the moles that can be produced for each product. b.) Assume 8.0 mol NH3 completely reacts. Calculate the moles required

45. ## physics

A capacitor,consisting of two metal plates each of area 50cm2 and space 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored..(2)the electric flux density and the potential gradient..

46. ## physics

who develops more power,an 80kg man who walks up a height of 20 steps each 17.5cm high in 7second or one who pushes an 80kg box up a frictionless slope to a height of 5m in 10seconds? Give a reason for your answer

47. ## Geometry

It is recommended that for a height of 20 inches a wheel chair ramp be 19 feet long. What is the value of x rounded to the nearest tenth? (Hint : All units must be the same)

48. ## Physics

determine the point of zero gravitation force, as measured from the centre of earth (mass 5.97 x 10^24 kg) to the sun ( mass 1.99 x 10^30 kg) if the earth-sun distance is 150 x 10^6 km.

49. ## college math

A car rents for \$260 per week plus \$0.10 per mile. Find the rental cost for a three week trip of 800 miles

50. ## physics

A capacitor,consisting two metal plates each of area 50cm2 and spaced 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored (2)the ekectric flux density and the potential gradient..

51. ## Stastistics

A linear regression line y = 0.8x-10 is computed to predict the final exam score y on the basis of the first score x on the first test. Maria scores 78 on her first test. What would be the predicted value of her score on the final exam?

52. ## Chemistry

1. As the intermolecular forces between molecules increase in magnitude, do you expect each of the following to increase, decrease or remain the same? My answers: Viscosity: increase Boiling point: increase Vapor pressure: decrease Surface tension:

53. ## english

Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet.

54. ## physics

A proton is placed in uniform electric field"E" what must be the magnitude and direction of electric field when electrostatic force is balanced by weight

55. ## Science

Locate the centre of mass of a system of two spherical masses of 5kg and 10kg kept with their centres 1m apart

56. ## Physics

A bullet of mass 3.9 g was fired at a stationary ball of lead. The head on impact moved the 10 kg ball at a velocity of .3703 m/s. If energy losses due to heat and internal energy are ignored. What was the speed of the bullet? a)370 b)950 c)549 d)975

57. ## chemistry

Consider a sample of excited atoms that lie 3.211 × 10–19 J above the ground state. Determine the emission wavelength (in nanometers) of these atoms.

58. ## DEAR REINY

dear reiny i am sim who posted 4 questions this morning i am in dubai and my final examinations are after 13 days and by the way those questions were not my homework or assignment those were some sums which we get on our school website and i had a doubt in

59. ## physics

Consider the line passing through the center of the cue ball as the x axis. At the point of collision with the solid ball on the table, a line passing through the centers of the cue ball and the solid ball form a 45° angle with the X axis. Assume no

60. ## Physics

Sara dragged a 45N canoe for 36 seconds down the boardwalk. If Sara used 120 Watts of power, how long was the boardwalk?

61. ## college math

i have 12n how would 12n look if it was multiplied by 12

62. ## college math

in a conjecture the answer i got was 12n how would it look if it was to be part A-multiplied by 12 part B-add 12 to the product Part C- divide the sum by 2 PArt D-subtract 6 from the quotient

63. ## Trigonometry

Find the length of the shadow of a 50 ft vertical pole when the angle of elevation of the sun is 28 degrees

64. ## english

Which of the following sentences is punctuated correctly? A. After you sign the agreement it is too late of course, to change your mind. B. After you sign the agreement, it is too late of course to change your mind. C. After you sign the agreement, it is

65. ## english

Which of the following sentences is written correctly? A When properly designed, an automobile can achieve great fuel efficiency. B. When properly designed an automobile can achieve great fuel efficiency. C. When properly designed, great fuel efficiency

66. ## maths

A profit of 20% is made on goods when a discount of 10% is given on the marked price. Profit per cent which will be made when a discount of 20% is given on the marked price is ____.

67. ## math

A number is divided into two parts such that one part is 10 more than the other. If the two parts are in the ratio 5:3. Find the number and the two parts

68. ## algebra 1

Find the slope of the line passing through the points given below or state that the slope is undefined. Then indicate whether the line through the points​ rises, falls, is​ horizontal, or is vertical (8,2) and (9,6)

69. ## chemistry

what mass of excess reactant remians when the reaction is completed?

70. ## Trig

Find all values of theta where 0degrees

71. ## mathematics

The sum of first m terms of an A.P is 5m²+3m. If its nth term is 168. Find the value of m. Also find the 20th term.

72. ## Spanish 2

Los domingos, a mis hermanos y a mí nos fascinaba...?

73. ## Geometry

The top of a valentine candy box is in the shape of an equilateral triangle if the altitude of the triangle is 8cm what is the perimeter of the triangle

74. ## college math

estimate the total cost of 97 shirts at \$19.95 each

75. ## Programming

#include int main() { char ch; printf("Enter Your State Name : "); scanf("%c",&ch); if(ch == 'a') printf("Shipping Charge : \$25"); else if(ch == 'b') printf("Shipping Charge : \$50"); else if(ch == 'c') printf("Shipping Charge : \$65"); else printf("The

76. ## chemistry

volume of 0.5 N sodium hydroxide required to neutralize 20 ml of 0.1 N acetic acid ?

77. ## Math

the ratio of the mass of flour in packet A to the mass of packet B is 1:2 Mrs anand uses 1/3 of flour in packet A . what is the new ratio of the flour in packet A to the mass of flour in packet B.

78. ## maths

In the given figure, O is the center of the circle and

79. ## Trig

Find all values of theta where 0degrees

80. ## MATH

Q1. Prem scored 85 marks on a test containing 100 problems. He attempted all the problems and his score was calculated by subtracting two times the number of wrong answers from the number of correct answers. How many problems did she score correctly? Q2.

81. ## early education

What problems might non-English speaking preschoolers encounter in their attempts to play with others

82. ## Math

Please check my answer. Four girls went to Friendly's. The check comes to \$36. They want to leave a 20% tip. How much should each girl pay? 36 ÷ 4= \$9.00 \$9.00 × 20%= \$1.80 \$1.80 + 9.00= \$10.80 each

83. ## physics

Temperatures are often measured with electrical resistance thermometers. Suppose that the resistance of such a resistance thermometer is 177Ω when its temperature is 28.7 °C. The wire is then immersed in a liquid, and the resistance drops to 116Ω. The

84. ## Geometry

What is the converse

85. ## yale

what does brain processing and development described as use it or loose it mean?

86. ## Math

each side of a cube is increasing at the rate of 9 cm/s.When the length of each side is 5 cm , find the rate of increase of its volume and total surface area.

87. ## math

The length of a rectangle is 8 metres less than twice its breadth. If the perimeter of the rectangle is 56metre, find its length and breadth.

88. ## Math

in a changing room, lockers are assigned the numbers 1,2,3,…, up to 99. If a locker is selected at random, find the probability that the locker number is A) a multiple of 5 B) a positive square number C) greater than 99

89. ## Real Analysis (Math)

Prove: [1/sqrt(2)] [sqrt(a) + sqrt(b)]

90. ## chemistry

a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid. What element can be identified? b) A sample of this compound is treated with hot molten sodium metal, the obtained mixture is

91. ## Trig

Find all values of theta where 0degrees

92. ## Trig.

If TanTheta= -65/72 and the terminal side of theta lies in Quadrant II use a pythagorean identity to find sec theta.

93. ## Math

I am a little confused with this: How do I change 8 1/3% into a fraction? Can someone explain or show me so I can understand? Thanks

94. ## Math

Can somebody show or explain this to me: Change 6 2/3% to fraction and .6 1/3 to a decimal or fraction.

95. ## chemistry

a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid. What element can be identified?  b) A sample of this compound is treated with hot molten sodium metal, the obtained mixture is

96. ## Geometry

A 16 foot ladder is leaning against a house. It touches the bottom of a window that is 12.5 feet above the ground. What is the measure of the angle that the ladder forms with the ground? 38.6 degrees?

97. ## SS

What were some of Louis XVI's political beliefs/views?

98. ## English

Which is correct? They want my sister and I to go away. They want my sister and me to go away. I think it's the first one?

99. ## Maths

If events A and B are such that they are independent and p (a) = 0.3 and p(b) = 0.5 Find p (a n b) and p (a u b)

100. ## math

A person weighs 120pounds on earth weighs 20 pounds on the moon how much does a 90 pound persob weigh on the moon

101. ## math

Mike and Sandra leave the seashore at the same time. Mike drives northward at a rate of 55mph, while Sandra drives west at 65mph. Find how far apart they are after 3 hours to the nearest mile.

102. ## chemistry

Calculate the vapor pressure over the solution, the amount of vapor pressure is lowered at 25°c and 100°c?

103. ## physics

A force makes an angle of 60° with y-axis.Find x-component of force.

104. ## MSJC

Simplify 2+(4+9)-2{18-3[7-(8-6) +1}

105. ## math

The measures of two angles which form a linear pair are in the ratio 2:7. Find the measures.

106. ## Math

How many 2'4s for a room 26'12

107. ## Math

A 3-digit positive integer is selected at random. Find the probability that A) The last two digits of the number is 22 B) The number is greater than 900 C) The number is less than 100 D) The number contains at least one digit 8

108. ## math

What will be the volume of cylinder in which area of the base is 45sq.cm and height is 6cm?

109. ## physics

A bob of a pendulum 100cm long swings through 20cm,find theta in radian and degree

110. ## Math

How many 2x4s needed for a room 26x12

111. ## english

how can i compare with with the Poem brothers by andrew and nettles with Of Mice and men similarties between them

112. ## English

Why my school should be awarded the best

113. ## Social Studies

what Century was 1044

114. ## Geography ,life science

Plz help me I don't understand the charpter of cells in life science

115. ## maths

4x+16y:32 and 4x+y:17

116. ## maths

Sum of first 30terms of an a.P. are equal to first 20 terms.show that the sum of first 50terms of the same ap is zero

117. ## French

Are these grammatically correct? 1. This movie had me laughing from beginning to end. -Ce film m'a fait rire du début à la fin . 2. The children in it are all exceptional actors and the writer is brilliant in his writing and humor. Les enfants de ce sont