# Questions Asked onApril 13, 2013

1. ## physics

A 57.0 kg diver dives from a height of 15.0 m. She reaches a speed of 14.0 m/s just before entering the water. (a) What was the average force of air resistance (e.g., friction) acting on the diver. (b) What is the force of friction underwater if she

2. ## chem

A voltaic cell consists of a strip of cadmium metal in a solution of Cd(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode. A salt bridge connects the two beakers.

3. ## physical chemistry

1000 ml of oxygen at ntp passed through siemens ozoniser when the resulting volume was 888 ml at ntp .quantity of ozonised oxygen is passed through excess of potassium iodide solution calculate weight of iodine liberated?

4. ## CHEM

How can I calculate a pH of hypochlorite buffer into LiCLO with only initial concentrations and no Ka value? [CLO-]=.1M [LiCLO]=.1M

5. ## Chemistry

Consider the equilibrium 2NOCl (g) 2NO (g) + Cl2 (g). In a 1 L container @ equilibrium there are 1.0 mol NOCL, 0.70 mol NO, and 0.40 mol Cl2. @ constant temperature and volume, 0.10 mol NaCl is added. What are the concentrations in the "new" equilibrium in

6. ## Chemistry

2Al(s) + 6H+(aq) → 2Al3+(aq) + 3H2(g) For the above Al-H2 cell, what is the voltage if [Al3+] = 6.0461 M, [H+] = 6.1 M, and the hydrogen pressure is 0.0557 atm. Eo = 1.66 V. .00004-(.05916/6)*log(7.1e-4) =.03 WRONG ANSWER I GOT

7. ## ECONOMICS

Thirty years ago, the market for chicken was perfectly competitive. Then, Frank Perdue started marketing chicken under his own name. How do you suppose Perdue created a brand name for chicken? What did he gain from doing so? What did society gain from

8. ## chemistry

When 25.0 g of Zn reacts,how many L of H2 are formed at STP?

38. ## inghram

X^2-33x+140=0

39. ## Chemistry

Why would HF have a lower electrical conductivity than NaCl?

40. ## english

9-The colorful koi drift lazily in the pond,just below the water's surface. 10-These fish are a silent parade of reds and golds and oranges. 11-you can hear the sound of water as it passes over rocks on it's course through the gardens. 1-which sentence

asked by jake plzzzzzzzzzz help plzzzzzz
41. ## phy

An emphysema patient is breathing pure O2 through a face mask. The cylinder of O2 contains 0.20 ft3 of O2 gas at a pressure of 2200 lb/in2. (a) What volume would the oxygen occupy at atmospheric pressure (and the same temperature)? ft3 (b) If the patient

42. ## physics

A 45g golf ball is hit with a golf club. the head of the club has a mass of 0.19kg and travels 63m/s before the collision. the ball has a speed of 72m/s as it leaves the face of the club. what is the speed of the club after the collision?

43. ## Parametric Equations

Convert to a rectangular equation by eliminating the parameter: x=(1/t) y=2t+3

44. ## physics

Tarzan (m = 68kg) swings down from a height of 4.8m on a vine to save Jane (m = 35kg) from some hungry hippos. if he gravs jane in an inelastic collision at the bottom of the vine's path, how high will they swing up to after the collision?

45. ## ECONOMICS

There are two ways to protect your car from theft. The "club" makes it difficult for a car thief to take your car. Lojack makes it easier for the police to catch the car thief who has stolen it. Which of these types of protection conveys a negative

46. ## ECONOMICS

Imagine a firm that hires two types of workers: some with computer skills and some without. If technology advances so that computers become more useful to the firm, what happens to the marginal product of the two types of workers? What happens to

47. ## ECONOMICS

College students sometimes work as summer interns for private firms or for the government. Many of these positions pay very little or nothing. What is the opportunity cost of taking such a job? Explain why students might be willing to take such jobs. If

48. ## ECONOMICS

Economists often view life cycle variation in income as one form of transitory variation in income around people's lifetime or permanent, income. In this sense, how does your current income compare to your permanent income? Do you think your current income

49. ## Calculus

Convert to a rectangular equation by eliminating the parameter: x=sin(theta) y=(cos theta)^2

50. ## Angular momentum

What is the angular momentum if the force is 72 N, the time is 1.5seconds and the lever arm is 3.2 meters?

51. ## public speaking

In a world of ____________, communication skills help us to interact with people whose backgrounds are different from our own

52. ## Chemistry

A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens approximately the size and shape of credit cards are soaked for the same amount of time at 850∘C. Sample A is soaked in NaCl and

53. ## World History

How did the Samurai become such a powerful force in Japan.

54. ## Math ( Polynomial )

This time three questions - 1. If (x^2 - 1 ) is a factor of polynomial ax^4 + bx^3 + cx^2 + dx + e, show that a + c + e = b + d = 0. 2. Let R1 and R2 be the remainders when polynomials x^3 + 2x^2 - 5ax - 7 and x^ 3 + ax^2 - 12 x + 6 are divided by ( x + 1

55. ## Math ( Polynomial )

This time three questions - 1. If (x^2 - 1 ) is a factor of polynomial ax^4 + bx^3 + cx^2 + dx + e, show that a + c + e = b + d = 0. 2. Let R1 and R2 be the remainders when polynomials x^3 + 2x^2 - 5ax - 7 and x^ 3 + ax^2 - 12 x + 6 are divided by ( x + 1

56. ## math

Simplify this expression by using the properties of exponents.You may leave your answer as a number to a power. (2c)^5(2c^9)^6=

57. ## calculus

find the derivative of the following: 3x^2 ln(2x) e^2x ln√x+3 please try and show few steps and laws of logarithmics.

58. ## english

12-Only once have i seen sudden activity in this peaceful place.13-Natures power came to call. 14-For a few brief moments one spring day, the stillness of the pond was disrupted.15-Diving from the sky, an enormous blue heron broke the pond's surface. Rings

asked by jake plzzzzzzzzzz help plzzzzzz
59. ## english

I really need 6 thick (hard) questions for Act 4 scene 1-3 "King Lear" by Shakespeare PLEASE THANK YOU

60. ## LITERACY

When books are arranged in correct order on the shelves by call number, which of the following call numbers will be first? A. D 839 .G3 1987 B. D 839 .G42 2004 C. DE 82 .A49 2006 D. DA 546 .L74 1986 answer a?

157. ## science-biology

Some herbicides, such as 2, 4-D are believed to make plant cells divide more rapidly than normal. Why would this kill plants? Why might this be dangerous to humans if it had the same effect on human cells?

what is inhumanity to man and give ex.