# Questions Asked onAugust 11, 2015

1. ## nsikayethu secondary comprehensive school

physical science (chemistry).place them in order Which liquid will evaporates faster between ethanol, nail porish remover, methylated spirits and water

2. ## drivers ed test

3. one way the national highway safety act helps drivers nationwide is by providing guidelines for maintenance on national highways requiring that all drivers have a federal drivers license providing drivers with insurance setting graduated drivers license

3. ## Math

a tower stands on the top of a cliff. at a distance of 55m from the foot of the cliff, the angles of elevation of the top of the tower as well the cliff are 60° and 45° respectively. find the height of the tower.

4. ## Physics

he drawing shows two planes each dropping an empty fuel tank. At the moment of release each plane has the same speed of 185 m/s, and each tank is at the same height of 3.62 km above the ground. Although the speeds are the same, the velocities are different

5. ## Physics

Which one of the following actions would make the maxima in the interference pattern from a grating move closer together? A.Increasing the distance to the screen. B.Increasing the number of lines per length. C.Decreasing the number of lines per length.

6. ## art

Thanks to the use of art, this artist was able to communicate the feeling of

7. ## Taxation law

Hilary is a well-known mountain climber. The Daily Terror newspaper offers her \$10,000 for her life story, if she will write it. Without the assistance of a ghost writer, she writes a story and assigns all her right, title and interest in the copyright for

8. ## Urgent math pls

The noise from a power mower was measured at 108 dB. The noise level at a rock concert was measured at 119 dB. Find the ratio of the intensity of the rock music to that of the power mower. (Round your answer to the nearest whole number.) I tried by 108-119

9. ## Lang Arts

The novel to kill a mockingbird feature a main character named scout. Scout is also the voice that tells the story. What point of view is used in the novel? A.First Person B.Third-Person Limited

10. ## new era

the third term of an AP is 5 while the 7th term is 13,find the 30th term of the AP

11. ## physics

a sled is moving up a slope that makes an angle θ of 5.00◦ with respect to the horizontal. The coefficient of kinetic friction between the sled and the snow is μk = 0.0500. What is the magnitude of the acceleration of the sled as it moves up the slope?

12. ## Math

Simplify 14-3x4/6 A. 14 B. 12*** C. 6 D. 3 Is it B?

13. ## Urgent math quick

A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 75°F. (a) If the temperature of the turkey is 150°F after half an hour, what is its temperature after 45 min?

14. ## Physics

The rotational inertia of a collapsing star changes to one third its initial value while conserving angular momentum. What is the ratio of the new rotational kinetic energy to the initial kinetic energy?

15. ## Chemistry

Can you please explain to me how you would regulate the pressure to favor the products in the this equilibrium system. MgCO3(s)-->

16. ## ENGLISH

The novel to kill a mockingbird feature a main character named scout. Scout is also the voice that tells the story. What point of view is used in the novel? A.First Person B.Third-Person Limited-------- C.Third-Person Omniscient The prefix a- can mean

17. ## Chemistry

Can you please explain to me how you would regulate the pressure to favor the products in the this equilibrium system. MgCO3(s)-->

18. ## Math

"Molly had (4x + 10) dollars. Ron has (-5x + 20) dollars. How much money do they have all together?" For this part I got -x + 30 dollars, but the problem comes when I see the next part: "How much more money does Molly have than Ron?" Now how to I calculate

19. ## algebra 2

Please show how to do these problems so i understand. 1)Prove that sin^2 x (1+cot^2 x)=1 2)Prove that tan x (cot x+tan x)=sec^2 x

20. ## physics

The drawing shows a skateboarder moving at 6.87 m/s along a horizontal section of a track that is slanted upward by 51.9 ° above the horizontal at its end, which is 0.616 m above the ground. When she leaves the track, she follows the characteristic path

21. ## physics

A person is trying to judge whether a picture (mass = 1.64 kg) is properly positioned by temporarily pressing it against a wall. The pressing force is perpendicular to the wall. The coefficient of static friction between the picture and the wall is 0.700.

22. ## English

Hello, An abstract noun name a(n) A. place B. thing C. idea My choice is thing. -jam

23. ## Chemistry

Can you please explain to me how you would regulate the pressure to favor the products in the this equilibrium system. MgCO3(s)-->

24. ## Chemistry

All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I am a little confused. I think it is D, but I'm second guessing myself with C

25. ## Physics

body of mass 0.3 kg is taken up a client Plains of length and height 5 metres and then allowed to slide down to the bottom again the coefficient of friction between the body and the plane is 0.15 what is the work done by gravitational force over round

26. ## Math

In water refilling station, the time that a pipe takes to fill a tank is 10 minutes more than the time that another pipe takes to fill the same tank. If the two pipes are opened at the same time, they can fill the tank in 12 minutes. How many minutes does

27. ## physics

Determine the minimum size of a mirror that a lady 1.2m tall will buy to be able to see her full height if her eyes are placed 6cm from the top of her head

28. ## physics

Two blocks of masses is m and 2m are held in the equilibrium on a frictionless incline. In terms of m and x, find the magnitude of the tension t1 in the upper cord and the magnitude of the tension t2 in the lower cord connecting two blocks.

29. ## mathematics

the greatest and the least resultants of two forces acting on a body are 35kN and 5kN respectively,determine the magnitude of the forces,what would be the angle between these forces if the magnitude of the resultant is stated to be 5kN

30. ## need help

There are 205 students in the middle school. If 41 students are girls in 8th grade, what percent of the middle school do the girls in 8th grade represent?

31. ## Scientific stats

A typhoon is a mature tropical cyclone that develops in the western part of the North Pacifi c Ocean between 180 and 100 E. One of the countries a ffected by typhoons is Taiwan. The typical typhoon season in this country lasts from June to October and

32. ## physics

1) a wire of length 1m has a resistance of 2 ohm.obtain the resistance if specific resistance is double,diameter is double and the length is made three times of the first.

33. ## health

Write a 300-500 word essay on what you have learned. The essay should have an introduction that states your thesis. Representation and style are general concepts to keep in mind when you develop your points. End your assignment with a strong conclusion

34. ## stastastics

two balls are drawn in succession,without replacement, from the box containing 3 red and 2 white balls, what is the probability of drawing a white on the second draw?

35. ## Algebra

I need help step by step please I keep getting a wrong answer of 252? Find the 24th term in the expansion of (a + b)^ 25

36. ## algebra 2

Please show how to do these problems so i understand. 1)Prove that sin^2 x (1+cot^2 x)=1 2)Prove that tan x (cot x+tan x)=sec^2 x

37. ## physics

Determine the minimum size of a mirror that a lady 1.2m tall will buy to be able to see her full height if her eyes are placed 6cm from the top of her head and also determine how high the mirror must be place from d floor

38. ## math

Two circles have a radii of 15 and 95. If the two external tangents to the circles intersect at 60 degrees, how far apart are the centers of the circles? Can someone please explain this to me, show the work and give me the answer. Thanks!

39. ## maths

the third term of an AP is 5 while the 7th term is 13 find the 30th term of the AP

40. ## math

Two circles have a radii of 15 and 95. If the two external tangents to the circles intersect at 60 degrees, how far apart are the centers of the circles? Can someone please explain this to me, show the work and give me the answer. Thanks!

41. ## Organic Chemistry (University)

We're supposed to try and figure out the structure of a compound based off the the following information: δ: 2.4 2H triplet δ: 2.1 3H singlet δ: 1.5 2H triplet δ: 1.3 6H singlet δ: 0.9 3H triplet >δ: 2.4 2H triplet This is probably a CH2 group bonded

42. ## Chemistry

A buffer solution A. contains approximately equal amounts of a weak acid and its conjugate base. B. increases its properties with an increase in the concentrations of the two buffer components. C. resists changes in pH. D. all of the above This one is D

43. ## physics

A hot-air balloon is rising upward with a constant speed of 3.29 m/s. When the balloon is 3.38 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

44. ## math

rj and joshua are running for fun . rj runs 7kph and joshua run at 5kph . if they start in the same time how long will it be before rj is one fourth ahead of joshua?

45. ## s.c.s

two unequal forces acting on a point at a angle of 150 degree. which is perpendicular is smaller force the larger force is 24 N. find the smaller and resultant force.

46. ## Algebra

Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in

47. ## Math Brain Teaser

I have a math brain teaser that I am sure it sooo simple that I am missing it. A man, buying steaks for his restaurant, approached a butcher. "How many steaks do you have for sale," the butcher answered, "And how much are they?" "The steaks are \$6 a piece

48. ## general

what other words can i use instead of I?

49. ## Chemistry

if the rate of a certain reaction is 6M/hr at 273K, what would be the predicted rate at 278k with activation 30kj/mol

50. ## Maths

A chord 6.6m long is 5.6m from the centre of the circle.find the radius of the circle.

51. ## Math

What is the area of a square with side lengths of 3cm? Use the formula A=s x s Is this correct A= 3x3=9

52. ## Math Brain Teaser

This is a brain teaser and this is all the information you are given. I am sure that there is a simple answer, but I can't figure this out. There is no information about the weight of each steak. A man, buying steaks for his restaurant, approached a

53. ## U.S. History

Why is each topic historically significant and what impact did it have on colonial development? Algonkian- Iroquois/Haudenosaunee- Mestizo- Encomienda- Canary Islands- Maize Cultivation- Pueblo- Thanks

54. ## Maths

Let ABC be a triangle. Locate the point O inside the triangle ABC such that for points L, M and N lying on its sides AB, BC and CA respectively, triangles BOL, COM and AON have the same area, where LO and BC, OM and AC, NO and AB must be parallel

55. ## algebra 1a

A building cast a shadow 48 feet long at the same time a 40 foot tall flag pole cast a shadow 9.6 feet long what is the hight of the building

56. ## yale high school

If a kindergarten teacher seats the class with four children on each rows there will be three children who will not have a seat however if five children are seated in each row there will be two empty seats what is the least number of children the class

57. ## ITT

In the following diagram, a ray of light is incident on an air-glass boundary. The index of refraction of air is 1, and the index of refraction for the glass is 1.4. What is the angle of the reflected ray, and what is the angle of the refracted ray?

58. ## calculus

A particle p moves in a straight line with a velocity v m/sec that is given by v=4t^2-1 where t is the time after passing through a fixed point O on the line .find the instant when p is instantaneously at rest .also find at that instant ,displacement of p

59. ## physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 10.5 m/s when going down a slope for 3.18 s?

60. ## history

Please help me with this essay? Has the importance of Oliver Cromwell in the English Civil Wars been exaggerated? i just don't know where to start thanks x

The novel to kill a mockingbird feature a main character named scout. Scout is also the voice that tells the story. What point of view is used in the novel? A.First Person B.Third-Person Limited

62. ## Physics

A 10 g dart traveling at 400 m/s sticks into a 10 kg, 1 m wide door at the edge opposite the hinge causing the door to swing open. What is the angular velocity of the door immediately after impact?

63. ## physics

A bucket of water with a mass of 20.0 kg is being pulled up from a well with a single massless rope. If the tension in the rope is 200 N, calculate the acceleration of the bucket.

64. ## Urgent math

I eliminated 2 of the 5 and now I have 3 I am confused towards which is the right one? help mathematical induction to determine which formula is true for all natural numbers n ≥ 3 a) 2n2 > (n + 1)2 b) (n − 1)2 > n2 − 6 c) (n + 1)2 < n2 +

65. ## Urgent math

Which of following is divisible by 4 for all natural numbers n? (Select all that apply.) please help ?!?!? 5n + 1 − 9 6n − 2 7n + 1 3n + 1 10n − 2

66. ## English

Write a story which ends with "when i woked up, it was all a dream".

67. ## Math

Is this correct? Write the decimal for seventy five and four tenths. My answer is 18.75

68. ## phyiscal science

calculate the height a block of ice at -25 deg C must be dropped in order to completely melt on impact. No air resistance and all energy goes into melting the ice.

69. ## Chemistry

All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I think it is D, but I also think it is c can you please tell me if either of these answers are right thanks

70. ## Physics

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 6.54 m/s. The car is a distance d away. The bear is 26.0 m behind the tourist and running at 10.4 m/s. The tourist reaches the car safely. What is the

71. ## DC/AC Electronics

In a series RL circuit, the highest component voltage drop will be across the component with the _ resistance or reactance.

72. ## Accounting

Revenue is earned when: A. Contract is signed by both parties B. The seller substantially completes performance required by an agreement C. Buyer completes payment required under an agreement D. The buyer accepts delivery and completes required payments.

73. ## math

Freshman:Sophmore = 5:4 Sophmore:Juniors = 7:8 Juniors:Seniors = 9:7 The total is 2158, what is the amount of each grade? So far, I got 35:32:224/9 for Freshman:Sophmore:Seniors I don't know if I'm correct, or what I'm doing. Can you please give me help

74. ## math

A car escapes from Police. The police start chasing 54 minutes later. Police travel 12% faster. How many minutes will it take to catch up? SO FAR I got that D=(x)(t+54) for the escaped car AND D=(1.12x)(4) Can someone help me through the process and give

75. ## Geometry progression

Given that 6,9,13 1/2,20 1/4 form a sequence of numbers, find the sum of it 13 term

76. ## math

length of the rectangle is five more than twice its width .area of the rectangle is 52 sq meter. find the length of the rectangle have my own sol. pls. continue L=5+2w LW=52 (5+2w)w=52 2w^2+5w=52 2w^2+5w-52=0 soo. pls could someone continue this~?

77. ## Calculus

Differentiate this y = 1 - cos^2 x

79. ## Calculus

Differentiate this y = 1 - cos^2 x

80. ## eua high school

How can i calculate the surface area of a graph with the equation y=2x^2-8

81. ## physics

differentiate between law of paralleogram and resolution of component of force.

82. ## Physics

What is the speed of a geosynchronous satellite on Earth?