# Questions Asked onJanuary 1, 2016

1. ## Physics

You are on the roof of the physics building, 46 m above the ground. Your physics professor, who is 1.80 m tall, is walking alongside the building at a constant speed of 1.20 m/s. If you wish to drop an egg on your professor’s head, where should the

2. ## physics

What is the frequency of a pendulum that completes 40 cycles in 8 minutes?

3. ## Maths

The top of a building 24cm high is observed from the top and from the bottom of a vertical tree. The angles of elevation are found to be 45degree and 60degree respectively . Find the height of the tree. ( leave your answer in surd form)

4. ## Maths/physics need help agn

A hand bag containing some loads weighing 162n is carried by two student, each holding the handle of the bag next to him..if each handle is pulled 60degree to the vertical find the force of each student? Help plz

5. ## math- HELP!

Calculate the linear speed of a bicycle with 26-inch wheels being pedaled at a rate of 200 revolutions per minute. Express your answer in inches per minute rounded to the nearest whole number. (Hint: The diameter of the wheel is 26 inches.) I got: linear

6. ## Maths/physics

A catapult used to hold a stone of mass 500g is extended by 20cm with applied force .f if the stone leaves with a velocity of 40m/s,what is the value of f? Help plz

7. ## English

Identify the correct sentence. a.There is a good variety of mugs in the cabinet. b.There are a good variety of mugs in the cabinet. c.A number of glasses have been broken. d.The number of broken glasses has increased.

8. ## Geometry

M is the midpoint of JK. find the coordinates of K. 1. J (-8,4) M (-1,1) 2. J (9,-5) M (5, -2) 3. J (0,11) M (-3,2) Please help me with this! I need help on this step by step. Thank you!

9. ## Math

Solve 2 - 5/x^2 - x - 6 = x + 3/x + 2 . Identify all non-permissible values.

10. ## Math

Two hoses together fill a pool in 2 h. If only hose A is used, the pool fills in 3 h. How long would it take to fill the pool if only hose B were used?

11. ## Trigonometry- ??????

(The number of times a bicycle tire rotates in a given time period is directly related to the distance traveled in that time period. Consider the following scenarios.) 1. Calculate the angular speed of a bike with 26-inch tires rotating at 200 revolutions

12. ## math

Two ships leave port at 4 p.m. One is headed N38°E and is travelling at 11.5 km/h. The other is travelling at 13 km/h, with heading S47°E. How far apart are the two ships at 6 p.m.?

13. ## Math Logarithmic Question

Solve for all possible values of x within the domain of the following logarithmic expressions. a)logx+log2=log7−log3

14. ## computer programming

write a program to print fibonaaci series like 2,1,3,4,7,11,18 up to 10th term using function...end function I did it using SUB..end sub in this way : declare sub series cls call series end sub series a=2 b=1 for p =1 to 5 print a; b a=a + b b=b + a next p

15. ## Math

Tanisha potato salad recipe calls for 3 pounds of potatoes she decides to make 3.5 times her regular recipe how many pounds of potatoes should tanisha buy?

16. ## Biology

Explain the ramifications to the process of transcription if the following occurs: A) The termination sequence of a gene is removed

17. ## Social Studies (Check, Please!)

Why was the United States unprepared for Japan's attack on Pearl Harbor? A: The United States was unprepared for Japan's attack on Pearl Harbor because Hawaii was not mentioned as a possible target in the war warning that American commanders at the Pearl

18. ## english

1. could you explain me how to use less and fewer in comparison grammatically 2. correction : he does not care for her . is it care for or care about ?

19. ## physics

A metal sphere has a charge of -6 µC. How many excess electrons are there on the sphere?

20. ## Math

Logrithmetic Problem question Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than the first. What was the magnitude

21. ## Math

A caterer prepares four times as many pizzas as she usually prepares for a large party. The caterer usually prepares 5 pizzas. The caterer also estimates that each party guest will eat 1/4 of a pizza. Can someone tell me the problenm that this would be?

22. ## math lit, lo, life sciences, xitsonga ,agriculture

im doing this subjects which career I cn follow..?

23. ## Physics

A soccer ball is kicked with 26.5n and accelerates at 6.5 m/s 2 to the right. What is the mass of the ball?

24. ## Math

For each function, i) determine the corresponding reciprocal function, y =1/f(x) ii) state the non-permissible values of x and the equation(s) of the vertical asymptote(s) of the reciprocal function iii) determine the x-intercepts and the y-intercept of

25. ## Math

How old is Robert,if Marin is 9 years older than him and their ages make 21?

26. ## Math

Hi, I need help on this problem:Solve the system of equation by giving an ordered pair for 14x +3y = 115 7x +3y = 80 Use the 3 Methods in your work. Thank You, I am not sure how to use graphing, substitution, and elimination, please show these methods.

27. ## Social Studies (Check, Please!)

1. After Roosevelt made the destroyers-for-bases deal with Britian, some Americans called him a dictator. Do you think Roosevelt was right or wrong in his actions? A: I think Roosevelt was right in his actions because he was only defending his country and

28. ## Algebra

Solve the system by graphing. x+y=−2 y=13x+2 Thanks jiskha,com :)

29. ## Number Systems of Mathematics

Solve using elimination and express answer as ordered pair: 2x + 3y = 7 x + 5y = 7

30. ## Math

Solve the system using elimination. Express as ordered pair. 2x - 7y = 27 3x = 2y = 3

31. ## Math

Solve the system by graphing. x+y=−2 y=13x+2 A. (6, 4); The image is of a 2-dimensional graph with an x-axis and a y-axis. One line is drawn passing through co-ordinates (-3,1) and (3,3). Another line is drawn from co-ordinate (-2,-4) to (6,4). B. (−3,

32. ## Website Question

Will the website be supporting pictures soon? like take a pic of your problem then upload it to the website then someone will try and solve it?

33. ## Math

Rewrite the following exponential functions as logarithmic functions, and the logarithmic functions as exponential functions: f(x)=(7/8)^x b) f(x)=log12x c) f(x)=log5/9x

34. ## math

2x3x5x8x11= with a 2 on top of 2 and a 4 on top of 5 and 2 on top of 11 is this a factorization a prime factorization

35. ## Algebra

Find the value of x so that the line passes through the points (2,3) and (x,9) and has a slope of 3/2.

36. ## math fractions and decimals

which is more 0.85 or 7/9

37. ## fractions

38/53 in the simplest form

38. ## physcis

What's the answer for 2pi spuareroot 80cm divided by 10meter per squared second

39. ## math

the length is 139,435ft a runner's step is 3ft does the number of steps the runner takes fit evenly into the length of the race.

40. ## Algebra

Question: The slope that passes through the points (-2,-3) and (8,-3) is ______ . 1)positive 2)negative 3)zero 4)undefined I believe the answer is: zero. How do I justify this?

41. ## Math

a)Write a function o represent the area of the rectangle. one side - 5x+15 other side - 31-2x b) Graph the function- lebel x and yint c)what dp the x-intercepts represent in this situaltion? d)Does the funtion have a maximum value in this situaltion? Does

42. ## Math

Solve 3 - x = √x2 - 5 . State any extraneous roots that you found. Identify the values of x for which the radical is defined.

43. ## maths

how many bricks each of length 25 cm , and 12 cm , would be required to field a courtyard of 30 m long and 20 m wide?

44. ## Chemistry

What is the chemical formula and name for: Na+1 and Na-3?

46. ## math

How many different ways (combinations) can i arrange the 6 letters: A, B, C, D, E and F without repeating any of them.

47. ## chemistry

an ionic bond will most likely form between elements from group_ a/2and3 , b/2and6 , c/3and4 , d/4and5 ,e/5and6

48. ## s s hr sec school

find the principal that yield a compoun interest of Rs.1632 in 2 years at 4% rate of interest per annum.

49. ## Physics

is electric field intensity the same as potential difference?

50. ## math

If one angel of a parallelogram is twice of its adjacent angel,find the angel of the parallelogram

51. ## MATHS HELP URGENT(TIME AND WORK)

A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?

52. ## Maths

Find the values of A. B and C if the expression Ax(x-2)(x+3)+Bx(x-2)+Cx(x+3)+(x-2)(x+3) has a constant value for all values of x

53. ## biology

what are the main similarties and differences between the three main food groups,carbohydrate,proteins and fats?

54. ## English Grammar

underline the subject and object in 'He was laughed at by all his friends.'

55. ## mechanics

A constant force of 40N is applied tangentally to the rim of a wheel with 20cm radius. The wheel has a moment of inertia 30kg.m2. Find (a)angular acceleration (b)angular speed after 4seconds from rest (c)the number of revolutions made in that 4 seconds

56. ## Reposting calculus help plz

Dy/dx=(X+x^3)/y help show working

57. ## English

United Nations, 310, 314, 362 Charter of, 311 Declaration of, 309 United States, 225, 238, 275, 289 In Big Four, 322, 325-7 In League of Nations, 299 Lend-Lease policy of, 307 Neutrality of, 305 As United Nations sponsor, 313 Universal Declaration of Human

58. ## science

why tne unit of pd and emf is same

59. ## English

Hibernation One of the mysteries in the world of nature is hibernation. By what process, with the coming of autumn, do some animals go into the deep sleep that sees them through the unfavorable environment of winter? The question has baffled mankind for

60. ## chemistry

A 90walt emersion heater is used to supply energy for 5min. The energy supplied is used to completely melt 160g of a solid at it's melting point.calculate the S.L.H of fusion of the solid.

61. ## quantum optics

You are doing a Ramsey experiment as described in the lecture: You prepare a beam of atoms in a state |1⟩, you do a π/2 pulse with a Rabi frequency of Ω0=(2π)⋅500 Hz and a detuning of δ=(2π)⋅3 Hz to the |1⟩→|2⟩ transition. Then there is a

62. ## science

what is the boiling point of 3.77m sucrose

63. ## Math

The fencing of square garden is 20 m in length.how long is one side of garden?

64. ## Math

Exponetial Functions In the following exponential relations, solve for x using logarithms. Round your answers to 4 decimal places. a) 5^3x=65 b) 2^2x+3=80

65. ## Math

Im trying to find out what the value of this equation is: x^37+ x^31 + x^47+ x^26+ x^63+ x^9 + 6. By using the fact that (x + 1/x) ^2 = 3

66. ## mechanics

please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of

67. ## physics

Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal?

68. ## Algebra

Job A pays Edith \$4 an hour. Job B pays her \$8 an hour. She will work both jobs. She is able to work no more than 15 hours a week. She wants to earn at least \$80 a week, working a combination of both jobs. Write a system of inequalities that can use used

69. ## math

what is 6/5 x 25/3

70. ## math

If 1 gallon of water weighs 8 1/3 lb. how much does 1 1/5 gallons weigh?

5x+3=7