# Questions Asked onSeptember 3, 2018

1. ## Physics

A certain freely falling object, released from rest, requires 1.40 s to travel the last 20.5 m before it hits the ground. (a) Find the velocity of the object when it is 20.5 m above the ground. (Indicate the direction with the sign of your answer. Let the

2. ## Chem

A patient receives 3.2 L of glucose solution intravenously (IV). If 100. mL of the solution contains 5.0 g of glucose (carbohydrate), how many kilocalories did the patient obtain from the glucose solution? *If anyone could help me with this, please show

3. ## chemistry

determine the mass of carbon iv oxide produced on burning 104g of ethyne C2H2

4. ## Math

How do I go about proving that: cos(4θ) + 4cos(2θ) ≡ 8cos^4(θ) - 3 Thanks in advance!

5. ## Physics

A runner is jogging in a straight line at a steady vr= 2.2 km/hr. When the runner is L= 4 km from the ﬁnish line, a bird begins ﬂying straight from the runner to the ﬁnish line at vb= 6.6 km/hr (3 times as fast as the runner). When the bird reaches

6. ## math

how many positive 4-digit numbers are there with an even digit in the hundreds position and an odd digit in the tens position? a. 10,000 b. 5,040 c. 2,500 d. 2,250

7. ## english

According to “Only Daughter,” what had the most important effect on the author’s identity? her extended family her writing career Spanish movies her college experiences A?

8. ## Economics

Develop a hypothetical table of information for coffee that shows demanded at various price and supply of coffee at these prices draw a demand and supply curve and show a equilibrium price at which the market is cleared of its aupplies

9. ## Economics

Determine which of two investment projects a manager should choose if the discount rate of the firm is 20%. The first project promises a profit of \$100,000 in each of the next four years, while the second project promises a profit of \$75,000 in each of the

10. ## physics

A particle moves in the xy-plane, starting from the origin at t = 0 with an initial velocity v0 = (20ˆi – 15ˆj) m/s and a constant acceleration of a = 4.0ˆi m/s2. Determine the particle’s speed and direction at t = 5.0 s.

11. ## Maths

A small ant climbs 5cm in 1 min and slips down 3cm .how much time it will take to climb to 6cm

12. ## Physics

calculate the electric potential at a point P, a distance of 1m from either two charges of +10uC and -5uC which are 10cm apart. Calculate also the potential energy of a +2uC charge placed at a point,P

13. ## social studies

Doc A: Religion 1. according to this document where did Hammurabi get his power as king? 2. monotheistic or polytheistic? a. according to this document was Babylonia a monotheistic society believe in one God or polytheistic society believe in many gods? 3.

14. ## english

Choose whether the sentence is declarative, interrogative, imperative, or exclamatory. That wreath should be decorated with a large bow at the bottom. declarative imperative exclamatory interrogative B?

15. ## maths

calculate the scale of a plan where 1mm represents 0.5m

16. ## English

1. I blew out the candles on the birthday cake. 2. I blew out the candle lights on the birthday cake. 3. I blew out the candlelights on the birthday cake. [Which expression is grammatical? Can we use all of them? Which one is commonly used?]

17. ## World History

How did the impact of imperial powers on colonies have a drastic effect on the course of human history? I don't how to answer this? Any idea?

18. ## Physics

A tennis ball isdropped from 1.52m abovethe ground. It rebounds to a height of 0.918 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s2 . (Let down be negative.) Answer in units of m/s. (part 2 of 3) With what velocity

19. ## Math

15-7 subtraction sentences

20. ## World History

How did the Sapa Inca help to preserve Incan society?

21. ## english

(1) To insert a table into your spreadsheet, the workbook says to "first click on the 'Table' tab." (2) Then, you could "place the cursor on the area where you want to put your table." (3) Click "Insert," and then select "Spreadsheet Table" to choose the

22. ## Science

Two point charges 6mew Coulomb and 2 new coulomb separated by distance 3cm in free space calculate work done in separating them to infinity

23. ## maths

seema reads 1/5 of a book per hour.if she goes to sleeping after reading the book for 7/3 hours.how much part of book is now left to be read?

24. ## Economics

Take a fmcg goods like washing machine detergent analyze the factor that determine the demand of this product

25. ## Econ

Sam has a job as a pharmacist earning \$30,000 per year, and she is deciding whether to take another job as the manager of another pharmacy for \$40,000 per year or to purchase a pharmacy that generates a revenue of \$200,000 per year. To purchase the

26. ## Math

A shopkeerper lost 10%by selling an article for Rs 1200.at what price should he have sold the article gain 10% with statement

27. ## Algebra

Consider the monomials 15x^2, y^2 and 6x^3 a. Factor the monomials. b. What factors of these monomials are common factors? c. Find the greatest common factor of 15x^2, y^2 and 6x^3 I'm having a really hard time with this.

28. ## Math

Simplify. 3ab^2/4ab * 3a^2 b4a

30. ## science

what is the probability density function of a hazard?i have no idea what is is other than it relates to measuring of a risk. I don't know if that is correct either. i really don't understand what it is

31. ## Chemistry

Tf (acetic acid) = 16.1°C Tf (with 3.00g of solute in 10.00mL of acetic acid) = - 2.5°C Use the data to calculate the molecular mass of the solute (Acetic acid: Kf = 3.9°C•kg/mol; D = 1.05 g/mL) After finding molality I was completely stuck on what to

32. ## MATH

The diameter of acilindrical unshapen pencil 8mm and its length 17.5 cm find the surface area?

33. ## Physics

A tennis ball with a speed of 26.3 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 13.8338 m/s. If the ball is in contact with the wall for 0.00998 s, what is the average

34. ## Math

Consider the monomials 15x^2y^2 and 6x^3y. a. Factor the monomials. b. What factors of these monomials are common factors? c. Find the greatest common factor of 15x^2y^2 and 6x^3y. (UPDATED VER.)

A runner is jogging in a straight line at a steady vr= 2.2 km/hr. When the runner is L= 4 km from the ﬁnish line, a bird begins ﬂying straight from the runner to the ﬁnish line at vb= 6.6 km/hr (3 times as fast as the runner). When the bird reaches

36. ## chemistry

Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees C to 37 degrees C. What would be the best way to work this problem? I don't know if I need to convert the kg to g.

37. ## MATH

Add the following vectors using trigonometry (i.e. cosine and sine laws). 9 N on a heading of [S2°W] and 11 N on a heading of [N31°W].

38. ## Math

Given that A = (3 x, x+1 2) and B =(1 2, 3 0), find value of x for which AB is a singular matrix.

39. ## chemistry

Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees C to 37 degrees C. What would be the best way to work this problem? I don't know if I need to convert the kg to g.

40. ## Calculus

In the exercise below find the x-values at which f is not continuous. Which of the discontinuities are removable? f(x) = csc2x

41. ## Math

Jamie has eight packs of candlewax to make sense of candles each pack contains 14 ounce of wax Jamie uses 7 ounces of wax to make one candle how many cans can she make

42. ## Math

Let f be the function defined by f(x) = x^2 if x

43. ## english

whats the theme of aunt elizabeths dream by matthew ramirez

44. ## Math

The function f is defined by f(x)= x^2-2x+3 if x≤1 and f(x)=-2x+5 if x > 1 Is f continuous at x=1? How do I solve this

45. ## us history

A league of friendships and perpetual union refers to what? Articles of Confederation?

46. ## Math

Use the mid ordinate rule with strips to find the area bounded by the curve y = x^2 + 1, x = -4, x = 8 and x-axis

47. ## Math

David and Sammy had each 840 tree seedlings. David planted equal number of seedlings per row in x rows while Sammy planted equal number of seedlings in (x + 1) rows. The number of tree seedlings planted by David in each row were 4 more than those planted

48. ## math

Let h be defined by h(x)=f(x)*g(x) x less than or equal to 1 h(x)=k+x if x > 1 If lim as x approaches 1 f(x)=2 and lim as x approaches 1 g(x)=-2 then for what value of k is h continous? A. -5 B. -4 C. -2 D. 2

49. ## Geography

Find the precision for each measurement. 120 meters, 7 1/4 inches, 30.0 millimeters

50. ## Math

The line x=c is a veritcal asymptote of the graph of the function f Which of the following statements cannot be true? A. Lim as x approaches c from the left f(x)= infinity B. lim as x apporaches infinity f(x)=c C. f(c) is undefined D. f is continous at x=c

51. ## Math

David and Sammy had each 840 tree seedlings. David planted equal number of seedlings per row in x rows while Sammy planted equal number of seedlings in (x + 1) rows. The number of tree seedlings planted by David in each row were 4 more than those planted

52. ## u.s. history

Was the central government able to accomplish much under the articles of confederation? No, limited functions of federal gov. Is this correct ? Are federal gov and central gov pretty much the same thing?

53. ## Physics

A small mailbag is released from a helicopter that is descending steadily at 2.58 m/s. (a) After 3.00 s, what is the speed of the mailbag? v = 32.01 Correct: Your answer is correct. m/s (b) How far is it below the helicopter? d = 41.9 ?????????????/

54. ## Social studies

Explain how the Civic virtues of the ancient Romans inspired the founding fathers vision of how citizens should conduct themselves in the United States. Can anyone help me with this in anyway? Like maybe a link or something Asap please

55. ## math

The graph of the function f(x)=(x^-9)/2x^2-5x-3 has a vertical asymptote a x=a and a horizontal asymptote at y=b. What are the values of the constants a and b? A. a=-3 b=2 B. a=-1/2 b=1/2 C. a=1/2 b=1/2 D. a=3 b=2 B???

56. ## Math

The melt in your mouth chocolate factory sells three times as many minutes as it sells almond bars it self have this many almond bars as it sells caramels if it sells 3750 cases of minutes each month how many karma says it’s all in one month

57. ## Math

Use the mid ordinate rule with 6 strips to find the area bounded by the curve y = x^2 + 1, x = -4, x = 8 and x-axis

58. ## Maths

If y=2xsin2x+cos2x, find d²y/dx² if x=2p/3 in exact value

59. ## Science

We know the next following bond energies: C≡O: 1 075 kJ; H−H: 435 kJ; C−H: 393 kJ; C−O: 356 kJ; O−H: 464 kJ. With that, a) Calculate how many kJs of energy are required to break all the simple bonds in 0,2 moles of CH4. b) With the energy bonds,

60. ## Science

Does nuclear chemistry involve protons and neutrons to create a huge amount of energy?

61. ## Math

How is the process used to multiply a fraction and a whole number similar to the process of multiplying two whole numbers

62. ## maths

The polynomial P(x) is given by P(x) = ax^3 + 15x^2 + cx - 72, where a and c are constants. The three zeros of P(x) are -3, 2 and B. Find the value of B.

63. ## Biology

Can someone please explain to me the biological definition of what alternative hypotheses is? I've looked through the paragraphs in my textbook, however, I still can't seem to arrive at a clear understanding of what the definition is.

64. ## English

Looking at the way you were treated while you lost your unborn baby do you think people of colour should've been treated with the same lack of respect as you were or do you wish they would've been treated differently from you

65. ## math

illustrate using examples the three methods of showing scale

66. ## Algebra

Can someone give me a 3rd degree polynomial so i can divide it by x - 2

67. ## physics

A group of particles is traveling in a magnetic field of unknown magnitude and direction. You observe that a proton moving at 1.50 km/s in the +x-direction experiences a force of 2.25x10- 16 N in the +y-direction, and an electron moving at 4.75 km/s in the

68. ## English

1. Doing sit-ups is is quite simple. 2. It is quite simple doing sit-ups. 3. To do sit-ups is quite simple. 4. It is quite simple to do sit-ups. [Can we use all the expressions? Are they all the same? Which ones do you use more often?] .

69. ## science

How long does the polar night last in Antarctica?

70. ## English

He recorded his life there in his diary. => He recorded his life in Antarctica in his diary. 1. Which life did he record in his diary? 2. Which life of his did he record in his diary? - He recorded his life in Antarctica in his diary. [Which question is

71. ## maths

half the perimeter of a ractangular garden whose length is 4m more than its width is 36m.lengh of the garden will be?

72. ## science

How do we define a hazard and a disaster in the context of the class, and what is the connection between a hazard and a disaster? Give an example of a hazard and the resulting disaster and describe the connection

73. ## science

describe how the term risk is defined in different disciplines/fields,

74. ## science

Discuss the probability density function (PDF) of a hazard and identify the main uncertainties in knowing the PDF for natural hazards.

75. ## Life orientation

Explain trends and demand of a job market Why is it important to follow trends in a workplace

76. ## Science

For each of the following situations, explain the most likely cause of the error and error should be corrected. a. After aspirating 300 ul with P1000, a small air space is seen at the end of the tip. b. While aspirating 1 ml with a P1000, a small air

77. ## Math

A shopkeerper lost 10%by selling an article for Rs 1200.at what price should he have sold the article gain 10%

78. ## science

what is a hazard? what is a disaster? the difference

79. ## Physical science

A silver Christmas tree can be made by placing copper wire,shaped in the form of a tree,into a silver nitrate solution.The unbalanced equation for the reaction is:Cu+AgNO3=Cu(NO3)2+Age 9.1 define the term oxidation in terms of oxidation numbers (9.2) write