1. physics

Use R = 8.2 × 10–5 m3 atm/mol K and NA = 6.02 × 1023 mol–1. The approximate number of air molecules in a 1 m3 volume at room temperature (300 K) and atomospheric pressure is:

2. Physics

I had to graph the following data and find the slope: Normal Force: Frictional Force: 0 0 2.0 0.6 6.0 1.8 9.0 2.7 10.0 3.0 The slope was 0.30. The question that I am confused on is what does this graph's slope represent?

3. physics

A girl of mass 60 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 11 m/s, and it bounces back with this same speed. The ball is in contact with the wall 0.05 s. What is the average force exerted on the

4. Physics

Two identical perfectly smooth 71.2 N bowling balls 21.7 cm in diameter are hung together from the same hook by two massless wires. The bowling ball are just in contact with one another, and the angle between the two wires is 50 degrees. What is the force

5. chemistry

When ice at 0C melts to liquid water at 0C, it absorbs 0.334 kj of heat per gram. Suppose the heat needed to melt 31.5 g of ice is absorbed from the water contained in a glass. If this water has a mass of .210 kg and a temperature of 21.0C, what is the

6. Physics

An object is thrown upwards with a speed of 14.0 m/s. How long does it take to reach its maximum height

7. chemistry

Here is the question: A sample of ethanol, C2H5OH, weighing 2.84g was burned in an excess of oxygen in a bomb calorimeter. THe temperature of the calorimeter rose from 24C to 33.73C. If the heat capacity of the calorimeter and contents was 9.63 kj/C. What

8. Math

Which of the following is TRUE about the line through the points (–1, 4) and (–1, 2)? Please EXPLAIN/SHOW WORK. A. The slope is undefined B. The slope is negative C. The slope is 0 D. The slope is positive

9. physics

which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and

10. Scholarships

I am applying for a scholarship that requires a 250 word essay on a topic of my choice. What kind of topics should i consider?

11. English

1. She poured water all over my painting and ruined it. (Can we use 'spoiled' instead of 'ruined'?) 2. boil (water changes into moist) 2-2. boil (water changes into moisture) (Which definition is right?) 3. He doesn't care about his family. He is not

12. Math

The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle. (a) Find the center of the circle. (b) Find the length of the radius of the circle. (Note that this is a distance.) Give the exact answer. Show work. (c) State the equation of the

13. MATH 156

How do you add and subtract fractions? Provide an example and demonstrate the steps you would take to arrive at the answer. What strategies would you use to help a student struggling with the concepts of adding and subtracting fractions?

14. pchem

Use R = 8.2 × 10–5 m3 atm/mol K and NA = 6.02 × 1023 mol–1. The approximate number of air molecules in a 1 m3 volume at room temperature (300 K) and atomospheric pressure is: 41 450 2.5 × 1025 2.7 × 1026 5.4 × 1026

15. Math

How do I formulate this question to be solved in the POM-QM software? Deborah inherited a large sum of money; she wants to use a portion of this money to set up a trust fund for her two children. The trust fund has two investment options: 1) a bond fund

16. physics- response to bobpursley

which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and

17. Math

Given f(x)= |x-1|/x^2-25 please determine the domain. Thank you! A. All real numbers except -5 and 5 B. All real numbers except -5,0 and 5 C. All real numbers except 0 D. All real numbers except 0 and 5

18. English

1. We see through/with our eyes. 2. We eat through/with our mouth. 3. We run through/with our legs. 4. We talk through/with our mouth. 5. We breathe through/with our nose. (Would you check the sentences? Which preposition do I have to use? Are both OK?) 6.

19. physics help!!!

the volume occupied by 1kg of water at 100C and atmospheric pressure changes from 1L in the liquid phase to 1700L in the vapor phase. evaluate the difference in internal energy of 1kg of water vapor and 1kg of liquid water at the normal boiling point: So i

20. Algebra

Find the equation of the line parallel to the line 3x + y = 5 and containing the point (4, – 2)

21. Algebra

Let f(x) = 1 – 3x^2. Which of the following is true? Please give us a brief explanation. A. f is an odd function. B. f is an even function. C. f is neither odd nor even. D. f is both odd and even.

22. Accounts

GT Ltd provides you with the following information at 30.06.Y1 Amounts in MUR. 1. Property, Plant and Equipment 505,000. Other Financial Assets 120,000. Inventories 200,000. Trade and other Receivables 202,000. Prepayments 10,000. Cash and Cash Equivalents

23. Managerial Economics

I need help with these questions 1. The structure of the market in which JetBlue operates (i.e. how competitive is it--monopolistic, oligopolistic, competitive, monopolistically competitive)? If your company turns out to have several huge, unrelated

24. Algebra

Confused Please Help! Thanks! Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function C. f is neither odd nor even D. f is both odd and even

25. AED

How might that be a solution to dealing with instruction and assessments of varying levels of language development?

26. math

Do you think that the formula where n is a whole number, will produce a prime number more than 50% of the time? Give evidence to support your conclusion.

27. Calculus

Evaluate the integral. -2 at the bottom of the integral sign and 7 at the top. f(x)dx f(x)={x if x or equal to 1 I'm not sure how you would apply these two concepts together?

28. Math

How do i factorise 25p^2-q^2?

29. Chemistry

What are vinyllic organohalides? How would you be able to identify them? Thanks

30. art

How do you add and subtract fractions? Provide an example and demonstrate the steps you would take to arrive at the answer. What strategies would you use to help a student struggling with the concepts of adding and subtracting fractions?

31. Math

Using the TI-89 Titanium calculator: Find the largest and smallest values of each of the following functions on their given intervals. (I'll show you one) f(x) = 2^x + x^2 [-4, 1] I put in the function on the Y= screen as shown, then -4 < x < 1 (it's

32. math

Simplify: (-1-2i)+(4-6i) I get 3-8i and 5-8i... confused, which one is it?

33. Physiology

The amount of DNA (measured in ng per mg ventricle) decreased. One nucleus is present in each vertebrate myocardial cell (each cell is mononucleated). Explain how it is possible that a decrease in mass-specific DNA concentration indicates growth of

34. IT 210 Fundamentals of Programming with Algorithms

Currency Conversion Test Procedure

35. Math

For i = the square root of -1, if 3i (2 + 5i) = x + 6i, then x = ? A. –15 B. 5 C. 5i D. 15i E. 27i

36. math115

the following scores were recorded on a 200 point final examanation;193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. (A) FIND THE MEAN FINAL examination score (b) find the median final examination score (c) is the mean or median a more useful

37. literary

I am writing my father's obituary - he passed away unexpectedly on Monday. He was from a very small town and always quoted verse that ended with "And when I go (return) home, I am a boy again" Walt Whitman. Dylan Thomas. Please. Please. I have a deadline

38. geography

to which will i refer to know the kind of climate in Korea?

39. geography

to which will i refer if i want to know Japan has snow?

40. Math

How do I calculate price relatives?

41. math

Solve the simultaneous equations: 3x-2y=19 2x+3y=4 Do i create a 3rd eq like this? 6x-4y=38 and where do i go from here?

42. Math

I need some help with this problem. When finding the factors of 841, what is the largest factor you would have to test? What theorem supports this? Can someone please help me with this? Thanks.

43. Algebra

Let f(x) = 1 – 3x^2. Which of the following is true? Give a brief explanation. A. f is an odd function B. f is an even function c. f is neither odd nor even Cf is both odd and even

44. Chemistry

How do you identify the most stable carbocation? Is it the one with more bulky substituents?

45. Algebra

Help please! I got so far with this and stopped because of confusion. Here is what I have so far. Let f(x) = 6/x-1 and g(x) = 1 + 3/x find the composite function of (fog)(x) (fog)(x) = f (g(x)) =f (1+3/x) =6/x-1 ????

46. words and reference

what do these 2 words mean please.? can you please help with the 2 following questions 1) can you tell me what - embodiment - means and please give an example. 2) Also can you please tell me what - intersubjectivity - means as before please give an

47. Physiology

the mechanisms responsible for triggering cardiac hypertrophy are still a mystery. Hypothesize about possible signals and the steps that might be involved to cause postprandial cardiac hypertrophy in pythons.

48. Managerial Economics

what advice would you give someone you believe to be excessively wary of risk?

49. HIS 135

I am doing research on my final project in HIS 135, and I need to find an important social, economic, or political event that impacted the American people the most for the following years: 1950s, 1960s, 1970s, 1980s, 1990s. I don't mind doing the research

50. Algebra

Let f(x) = 6/x-1 and g(x) = 1+3/x. Please fing the composite function. This is what i got so far. =f (1+3/x) =6/x-1 = =f (1+3/x) = 6/ [1+3/x - 1] How do I get the composite?

51. elementry

What characteristic do the numbers 8, 10, 15, 26, and 33 have that the numbers 5, 9, 16, 18, and 24 don’t have? (Hint: List the factors of the numbers.) Give two more numbers that have this characteristic.

52. com130

. In what situations might an individual writing process be preferable?

53. Maths

How do i simplify (3a-1^2)?

54. calculus

Differentitate y = e^x^2 -^5^x +^4 so far i have dy/dx = 2x e^(x^2) - 5^(x)* ln 5 + can you help with the rest?

55. AED

How does language development affect instruction and assessment for ELL students? In what ways are our tests geared equally toward all students, ELL or otherwise or are they?

56. calculus

differentiate y = ln(e^x + e^-x)

57. us history

In what ways does the Magna Carta still impact law?

58. accounting

Malissa is an accountant. Sometimes printouts of financial statements have errors and are not usable. Malissa doesn't like to waste anything, so she takes the unusable financial statements to her son's day care center to use for drawing paper. Explain why

59. math

How do you do this: (4 -5 + (-3 2 0 7) 5 -6)

60. physics

Which of the following processes leads to a change in entropy of zero for the system undergoing the process? Non-cyclic isobaric (constant pressure) Non-cyclic isochoric (constant volume) Any closed cycle

The equation of a circle with center (0, 3) and radius 3 is

62. math

The equation of a circle with center (-1, 2) and radius 4 is

63. math

Every circle is a function

64. Statistics

Two problems: 1. Find D sub 3 of the following data set: 60, 40, 26, 33, 23, 53, 36, 23, 28, 12, 30, 47 2. Find P sub 26 of the following 25 scores: 38.5, 41.5, 52, 52.5, 61, 63, 63.5, 68, 69, 69, 78.5, 79, 80, 83, 87, 88.5, 88.5, 91, 91.5, 92, 92.5, 94,