# August 7, 2011

1. ## chemistry

solubility of NaCl in water at 298K is 35.8 kg per 100 kg of water calculate mass fraction of NaCl?
2. ## Physics

A force of 10N applied normal to the wall can just prevent the sliding of a wooden block. If co-efficient of static friction is 0.2.Find the weight of the body.
3. ## statistics

the average starting salary is Rs 15000per month with a standard deviation of Rs.1000 assuming normal distribution,what is the probability that starting salary will be more than Rs.17000, out of 200 degree holders how many will getRs.14000?

What Does It Mean When They Say Death Before Dishonor
5. ## Calc II

need help with practice assign ment and i need help , please email me email me carmenelectragowe (at ) @gmail
6. ## trigonometry

at a point 27 m from the front of a pole, the angle of elevation of the top of the pole is 53. find the height of the pole
7. ## trigonometry

a ladder which is 5 m long leans against a nail on the wall.it makes an angle of 62 derees with the ground. find the height of the nail above the ground and the distance of the foot of the ladder from the wall.
8. ## trigonometry

a kite has 120 m of string attached to it when it flies at an elevation of 5 degrees. How far is it above the hand holding it? ( assume that the string is taut)
9. ## physics

A diver descent 100 m below sea level. If the density of sea water is 1024 kg m-3, find the pressure she will experience.
10. ## physics

. A water heater can has a power of 350 W. It is placed in a container filled with 1 litres of water with a temperature of 40 ºC. The heater is then allow to run for 1 hour. How much water will there be left in the container after 1 hour? (Specific heat
11. ## math

I have a math assignment and i am meant to do i backyard design and i have to fit in a fishpond which has an outside diameter of 2.5 and a water depth of 40cm. how should i measure it out into the backyard design?
12. ## Math

Please let me know if is it true? If exactly 15 seconds of speech are to be sampled at a rate of 44 100 samples per second and each sample is represented by 16 bits of data, then the resulting file size will be more than 1.4 megabytes.
13. ## physics

A cyclist is cycling at a uniform velocity of 8m/s for 8 seconds. He then stops paddling and the cycle comes to rest in next ten seconds. Draw the velocity-time graph and calculate: (i) the average retardation.(ii) the distance covered with uniform
14. ## Algebra

Find the value of x^3+¡¼2x¡½^2-3 when x =3. I don't know how to type x to the 3rd power it keeps putting a little triangle there. How do I do this? When I type it here or in word it does the same thing. Help!
15. ## MGM255

I need two types of organizational theory? An organizational structure with a diagram?
16. ## IT

This week you are beginning your project. The development for this project will take place over length of the capstone course. Your instructor will work with the the students to select and approve each portion of the project development. You will work on
17. ## Algebra

2. Find the value of x^3 + 2x^2 - 3 when x=3 Answer-42 4. Compare the quantity in Column A with the quantity in Column B. Column A Column B The solution of The solution of 2(x-3) = 6x 3x + 2 + 5x + 6
18. ## Algebra

4. Compare the quantity in Column A with the quantity in Column B. Column A The solution of 2(x-3) = 6x Column B The solution of 3x + 2 + 5x + 6
19. ## Maths

1/7 of Matthew's allowance is equal to 3/8 of Ryan's allowance. What is the ratio of Matthew's allowance to Ryan's?

53. ## Art 101

Discuss how art was used as a vehicle for propaganda in the works of Höch, Grosz, and Picasso.
54. ## Algebra

1.What is the domain of this relation? domain range -3 3 -2 -6 -1 0,15 0 -6 1 -1 Answer- -3,-2,-1,0,1 2. Compare the quantity in Column A with the quantity in Column B Column A slope of y =3 Column B slope of x =3 Answer- The two quantities are equal 3.
55. ## Algebra

1. The input –output table is accurate. X Y+ 7 -5x -1 7-5(-1) =12 0 7-5(0) =7 1 7-5(1) =2 2 7-5(2) = -3 3 7-5(3) = -8 Answer- True
56. ## statistcis

Im a nurse that works in a hospital. What are some examples of Inferential statistics used in the workplace?
57. ## Math

The lifetime of a SuperTough AAA battery is normally distributed with mean of 28.5 hours and standard deviation of 5.3 hours. For a battery selected at random, what is the probability that the lifetime will be 25 hours or less? a. 0.7454 b. 0.6604 c.
58. ## Math

Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need to show the work on both problems thank you. Perform the indicated operations
59. ## Math

Records show that 29% of all payments to a mail-order company are submitted after the due date. Suppose 50 payments are submitted this week. Let r be a random variable that represents the number of payments that are late. Use the normal approximation to
60. ## math.

If a+b=s and a-b=t, then which of the following expresses the value of ab in terms of s and t?
61. ## science

i presume During the digital-to-analogue conversion process, each sampled value is converted to its closest quantisation value. Does anyone have different thought, please explain?
62. ## PHYSICS - HELP

Two ingenious 120 student students decide to use an oscillating mass on a spring to check the shutter (exposure) time of their camera. They set up vertically alongside the mass and spring. A pointer attached to the mass allows the scale on the meter stick
63. ## paragraph

write a 150 word paragraph to explain how purpose audience tone and content impact academic writing
64. ## Survey of Sccounting

Why would an entrepreneur want to choose one over the other, proprietorship, a partnership, or corporation?
65. ## PHYSICS - HELP

I NEED HELP ON C THROUGH F. THANK YOU A spring id vertically, as shown below, and a 500g mass is hung from its lower end. The EQUILIBRIUM extension of the spring is observed to be 10.0cm. (1) What is the spring constant of the spring? ANSWER: 49N/m (B) If
66. ## Statistics

A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress with a severe storm class rating. Let us say that we want to set up a statistical test to see if the wave action (i.e., height) is
67. ## Statstics

Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with \alpha =2.3% A random sample of 18 Australian bank stocks has a sample mean of x bar = 6.1%. For the entire Australian
68. ## Math

When using the student's t distribution to test mu, what value do you use for the degrees of freedom if the sample size is 42? a. 41 b. Can not be determined from information given. c. 43 d. 42
69. ## science

If a baseball is thrown 30 m/s backwards from a truck moving 50 m/s, how fast will the ball strike the glove of a ground-based catcher?
70. ## Pre-calculus

find the trig functions of angle x if the terminal side of x passes through the point (-12, 5).
71. ## social studies

what is the exact location of Christmas island.. thanks..
72. ## Math

What price do farmers get for the peach crops? in the third week of June, a random sample of 40 farming regions gave a sample mean of $6.88 per basket. assume that the standard deviation is known to be$1.92 per basket. find a 90% confidence interval for
73. ## statistics

You have hired a polling organization to take a simple random sample from a box of 200,000 tickets and estimate the percentage of 1s in the box. Unknown to them, the box contains 50% 0s and 50% 1s. How far off should you expect them to be if they draw
74. ## statistic

1. Compute descriptive statistics for liberal art colleges and research universities in the Excel file colleges and universities. Compare the two types of colleges . what can you conclude.? 2.The Excel file MBA Student survey provides data on a sample of
75. ## Math 209

A particular rat given n trials in a maze can run through the maze in t minutes, where: t=6+_20__ n+2 How many trials are needed so that the rat can run through the maze in exactly eight minutes?
76. ## history

what were vietcong hideouts?
77. ## Geometry

Find one counterexample to show that each conjecture is false. The sum of two numbers is greater than either number.
78. ## Math

Can you please explain step by step on how to do each of these two problems below? And then tell me whether it involves an arithmetic sequence or a geometric sequence I also need the work shown out for both problems thank you. 1). A person hired a firm to
79. ## Geometry

Find one counterexample to show that each conjecture is false. The product of two positive numbers is greater than either number.
80. ## trig

Find sec theta if theta=3/4 in Q1