# Questions Asked onJuly 21, 2013

1. ## physics

The sun radiates like a perfect blackbody with an emissivity of exactly 1. (a) Calculate the surface temperature(K) of the sun, given it is a sphere with a 7.00 multiplied by 108 m radius that radiates 3.80 multiplied by 1026 W into 3 K space. (b) How much

2. ## Physics

A raft is 4.2 m wide and 6.5 m long and it floats on water (density of water = 1000 kg/m3). When a horse is loaded onto the raft, it sinks an additional 0.027 m deeper into the water. What is the weight of the horse (in N)?

3. ## physics

The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 7.40 g of condensation forms on a glass containing water and 210 g of ice, how many grams will melt as a result? Assume no other heat transfer

4. ## sci 207

1. A dad holds five coins in his hand. He tells his son that if he can guess the amount of money he is holding within 5% error he can have the money. The son guesses that he is holding 81 cents. The dad opens his hand and displays 90 cents. Did the son

5. ## physics

The "steam" above a freshly made cup of instant coffee is really water vapor droplets condensing after evaporating from the hot coffee. What is the final temperature of 280 g of hot coffee initially at 90.0°C if 2.50 g evaporates from it? The coffee is in

6. ## physics

(a) How many kilograms of water must evaporate from a 60.0 kg woman to lower her body temperature by 0.750°C?

7. ## physics

an object has an acceleration of 12.5 m/s2. if the net force experienced by the object is decreased by a factor of 4.5 then what is the new acceleration

8. ## trig

A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 12 knots with heading 140°, and the second tugboat is traveling at a speed of 17 knots with heading 200°. Find the resulting speed and direction of the barge. (Round your

9. ## ggc

In a random sample of 200 registered voters, 120 indicated they are Democrats. Develop a 95% confidence interval for the proportion of registered voters in the population who are Democrats.

10. ## accouting

The ledger of Custer Company has the following work in process account. Work in Process—Painting 5/1 Balance 4,820 5/31 Transferred out ? 5/31 Materials 5,710 5/31 Labor 4,800 5/31 Overhead 2,430 5/31 Balance ? Production records show that there were 410

11. ## GEOMETRY

A cylindrical tank if 8 ft. in diameter and 20 ft tall. how many gallons of paint are needed to paint the tank if one gallon covers 200 sq ft ? and a cylindrical hole with diameter 8 inches is cut through a cube 10 in. on a side. find the surface area of

12. ## physics

In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 45.0 km wide, and 250 m thick. (a) What is the mass of this iceberg, given that the density of ice is 917 kg/m3? (b) How much heat

13. ## Physics

A 41.0 cm diameter wheel accelerates uniformly from 86.0 rpm to 342.0 rpm in 3.4 s. How far (in meters) will a point on the edge of the wheel have traveled in this time?

14. ## Math

From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are, 6 degrees and 13 degrees, respectively. The points and the tower are in the same

15. ## Math

Jason has to sell a box of candy bars for a fundraiser. Yesterday he sold 1/3 of the total number of candy bars that came in the box, and today he sold 3 candy bars. If his sales for these two days was 11/30 of the total number of candy bars that came in

16. ## math

a 4 x 7 rectangle can be rotated about the long side to generate a cylinder.it also can be rotated about the short side to generate a cylinder. find the lateral and surface area of the two cylinder.

17. ## socials 11

why did canada's ties with cuba, in particular, represent a move away from adherence to american foreign policy?

18. ## Chemistry

The nuclide 38cl decays by beta emission with a half life of 40min. A sample of .40 m of H38cl is placed in a 6.24 liter container. After 80 min the pressure is 1650 mmHg. What is temperature of container? I have tried calculating the decay rate of the

19. ## GEOMETRY

A 4x7 rectangle can be rotated about the long side to generate a cylinder. It also can be rotated about the short side to generate a cylinder. Find the lateral area and surface area of the 2 cylinders . PLEASE HOW. TELL ME

20. ## Physics

A block of mass M=6 kg and initial velocity v=0.8m/s slides on a frictionless horizontal surface and collides with a relaxed spring of unknown spring constant. The other end of the spring is attached to a wall. If the maximum compression of the spring is

21. ## statistics

1. A simple random sample of 400 students is taken at a large university. The average height of the sampled students is 68 inches and the SD is 2 inches. The distribution of heights in the sample follows the normal curve very closely. An approximate 68%

22. ## Math

Convert 57/9 to a whole or mixed number.

23. ## Algebra 2

-Explain the difference between log base b (mn) and ( log base b of m)(log base b of n). Are they equivalent? My answer: Let b=2, m=8, n=16 *log base b (mn)=log base b of m + log base b of n log base 2 of 8+ log base 2 of 16=7 * (log base b of m) (log base

Ok so Im thinking I will use the theme of heroism (which is the human condition) My arguments would be character, social position and ancestry This is a book and movie comparative essay... I have to do a comparative essay on a book and a film (I chose The

25. ## Math

Solve the following problem and reduce to lowest terms (mixed number or improper fraction). 2/3 + 1/6 +11/12

26. ## Finance

One way to think about the required rate of return is: as the highest return a risk-averse investor wants from an investment. as the risk-free rate of return plus a risk premium. as the historical rate of return plus a risk premium. as a comparison between

27. ## Computer science

Write an HTML form that prompts the user to enter loan amount, interest rate, and number of years, as shown in Figure 1. Clicking the Compute Payment button invokes a JSP program to compute and display the monthly and total loan payments, as shown in

28. ## Math

What would be the amount of compound interest on \$8,000 invested for one year at 6%, compounded quarterly?

29. ## Chem 101

why must we used sulfuric acid H2SO4, in 2KAl(OH)4 + H2SO4->2Al(OH)3(s)+K2SO4 +2H2O and 2Al(OH)(s)+3H2SO4->Al2(SO4)3+6H2O rather than hydrochloric acid,HCl,or nitric acid, HNO3?

30. ## Chemistry

I posted this before a few hours ago without a reply yet but decided I would add more detail: question The nuclide 38cl decays by beta emission with a half life of 40min. A sample of .40 m of H38cl is placed in a 6.24 liter container. After 80 min the

31. ## physics

a boy pushes with a force of 15 lbs. on a lawnmower handle which makes an angle 37 degree with the level ground. What is the horinzontal component of this force?

32. ## General Math

I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the

hello: i am considering going back to school to get a degree in business. i have borrowed a book from a friend who is already in the program. meanwhile: i sometimes have trouble working my way through the chapter questions. he said that they were not given

34. ## math

Jo saw a dress regularly priced at 78%. It was on sale at a discount of 30%. Find the amount of discount and the sale price.

35. ## math

A GARDEN places some lilies in a pond.he does this on the first day of the month of september.the lilies double in volume every day until on the last day of the month,the pool is full.on what day of the month was the pool half full of lilies?

36. ## math

Shelly delivers the weekly local paper to neighborhoods in her town. House numbers are even on one side of the street and odd on the other. Shelly delivers an equal number of papers to both sides of the street. Although she always aims for the front

37. ## physics

A 3.00 g lead bullet traveling at 640 m/s strikes a target, converting its kinetic energy into thermal energy. It's initial temperature is 40.0°C. Find the available kinetic energy of the bullet. Find the heat required to melt the bullet.

38. ## Math

Convert 4/5 to higher terms of twenty-fifths.

39. ## Math

Ryan Miller wanted to make some money at a flea market. He purchased 55 small orchids from a nursery for a total of \$233.75, three bags of potting soil for \$2.75 each, and 55 ceramic pots at \$4.60 each. After planting the orchids in the pots, Ryan sold

40. ## Math

In the Capital Asset Pricing Model, the market risk premium is estimated over a long period of time because: more data is always better than less. a longer holding period gives a more reliable estimate because it is, in effect, a larger sample size. almost

41. ## calculus (hint?)

f(x) is a twice differentiable function such that f(2x)=f(x+5)+(x−5)^2 What is f''(x)?

42. ## College Algebra

Find the equation of the parabola y = ax2 + bx + c that passes through the points. To verify your result, use a graphing utility to plot the points and graph the parabola. (−2, −15), (−1, −4), (1/2,-10) y=?

43. ## Math

Given the points A(0,0), B(4, 3) and C(2,9), what is the measure of angle ABC? Using Law of Cosines.

44. ## Physics

how many grams of water at 20 degrees celcius are necessary to change 800.0g of water at 90.0 degrees celsius to 50.0 degrees celcius?

45. ## statistics

1. A simple random sample of 400 students is taken at a large university. The average height of the sampled students is 68 inches and the SD is 2 inches. The distribution of heights in the sample follows the normal curve very closely. An approximate 68%

46. ## Math

Ventura Coal mined 6 ⅔ tons on Monday, 7 ¾ tons on Tuesday, and 4 ½ tons on Wednesday. If the goal is to mine 25 tons this week, how many more tons must be mined?

47. ## math

when a large cake is cut into pieces that each weigh 3 ounces, it yields 110 pieces. how many pieces would the cake yield if it were cut into 2 ounce piece instead?

48. ## sociolgy

4. Which of the following disciplines are women less likely to study, leading to education-related economic inequality? (Points : 1) Sciences Applied sciences Humanities Arts

50. ## math

when tessa and fatima run a 100 metre race,tessa wins by 10m.then they repeat the race,this time with tessa starting 11m behind the starting line.if both girls run at the same speed as efore,what would be the expected result?

51. ## World Geography

The major cause behind the Israeli invasion of Lebanon was

52. ## English to Writeacher

Yes, I know how to write a thesis statement and how a comparison essay goes.. But I already have my info: This is a comparison essay exploring to what degree an inherent film is discussed and how it relates to an aspect of the HUMAN CONDITION. So my theme

53. ## Math

Two Wheeler-Dealer Bike Shop has a 22-inch off-road racer on sale this month for \$239.95. If the original price of the bike was \$315.10, how much would a customer save by purchasing it on sale?

54. ## earth

What is an elipse of the sun and what is lunor elipse of the moon

55. ## math find the max/min

f(x) = x2 + 2x - 9

56. ## math

if c+4=2a+7b, what is the value of c+6 in terms of a and b? 4a+7b 2a+7b-2 2a+5b+2 2a+9b 2a+7b+2

57. ## math

a taut wire of length'w'emits a single note when plucked.if it were half as long it would emit the same note but one octave higher.how long should the same wire be to emit the same note but one octave lower?which gives the biggest answer?1)2.3x8 2)3.4x7

58. ## English

This is a quote. Without the dark we would never see the stars For you is this an encouraging quote?

59. ## math

In which of the following sentences is the underlined word a past participle ? (a) we (helped)Joan to pack her things (b) I was (working)overtime for about six months (c)Jenna has (driven)this route multiple times.(d)She would (like) to join us

60. ## eth/125

Ethnicity refers to a.racial differnces b.diffrences in physical and mental characteristics c.cultural diffrences d.citizenship

61. ## MATH

PLEASE TELL ME THE ANSWER OF HOW TO DIVIDE 602.88 DIVIDED BY 200. WHAT WILL BE THE ANSWER ? DON'T USE CALCULATOR PLEASE.

62. ## chemistry

so you have this chemical you tested on mice and rats now you are going to test it on humans to how much degree can you test on humans? what can you measure ex) mass/body weight?

63. ## physics

State the conditions for total internal reflection

64. ## Physics

When working with the properties of Saturated Steam. The pressure table supplied states: Pressure kPa = 1100 (P) Temp in Celsius = 184.09 (T) Specific Volume = Sat. Liquid = 1.1330 (Vf) Specific Volume = Sat.Vapor = 177.53 (Vg) Enthalpy = Saturated Liquid

65. ## Chemistry

How many liters of hydrogen needs to be reacted with chlorine to produce 21g of hydrochloric acid, at STP?

66. ## Chemistry 3A

An aqueous solution contains the ions B, C, and D that are in equilibrium with one another according to the reaction B (aq) + C (aq) ->/

67. ## Calculus

Find the slope of the functions graph at a given point. Then find an equation for the line tangent to the graph there. f(x)=2*square root of x. (1,2) Could someone please help me figure this one out?

68. ## socials 11

why did Trudeau lose popularity in the 1970s?

69. ## Calculus (Limits)

f(x) is a function differentiable at x=1 and f′(1)=1/13. What is the limit of (x^3 - 1)/f(x) - f(1) as x approaches 1?

70. ## Strength of materials

Explain UTM with neat sketch

71. ## Math

Is octaland hexadecimal numbering are the number system that is used by computers?

72. ## life orientation

in 10-15 lines critically discuss 5 ways in which the human or environment problem impact on de community

73. ## physics

voltage of a solenoid

74. ## math

a total of \$24.00 is to be divided among three children in amounts proportional to their ages. if the children's age are 9, 12, and 15 years, how much money will the YOUNGEST receive? 2 3 4 5 6

75. ## math

if x,y, and z are different integers and x+y+z=3, what is the least possible value of z? -3 1 2 3 cannot be determined from information given

76. ## chem 103

Question..where to start..If you had 250.0 g of copper (specific heat = 0.385), what temperature could you raise it to (starting from 20 degrees C) if you heated it with 1685 Joules of energy? If I use the formula q=MxCsX^T, How do I find ^T if I do not

77. ## math

32x^3y^2z^4 / 4x^4yz^6 =

78. ## English to Writeacher

Writeacher, please help me with my thesis!!:'( its due tmw...i don't know wat theme i should do and wat my arguments would be... here is the plot: Gandalf tricks Bilbo into hosting a party for Thorin and his band of dwarves, who sing of reclaiming the

79. ## English

Without the dark, we'd never see the stars. What does this mean to you?

80. ## Differentiation

If f(x)=(x+1)^2/(2x+1)^3, then f′(1)= −a/b. What is a and b?

81. ## socials 11

why did OPEC raise the price of oil in 1972?

82. ## eth/125

Which of the following types of people would be unlikey ro do much to change themselves? A. The fair wheather liberal b.the all wheather liberal c.the timid bigot d.all of these

83. ## Strength of materials

Giveto applications of mechanics depends upon strength

A swimmin bath has verticle sides and the floor slopes uniformly so that, when the bath is full, the water is 1m deep at the shallow end and 4m deep at the other end. If the bath is 25m long and 12m wide, calculate the volume of the water in the bath when

85. ## english

why some sentences begin with ....1. to my surprise 2. to be able to do it ......what grammatical aspect is it

86. ## Math

Solve the following problem and convert to lowest terms (mixed number). 6 ⅚ – 17/18 (six and five sixths minus seventeen eighteenths)

87. ## Analytical Chemistry

calthe culate mass of 10% stock solution required to prepare 0.8kg of 4%solution

88. ## math

in the number 0.123451234512345......(recurring)what is the 1992th digit after the decimal point

89. ## Quantitative Reasoning for Business

If I made 12.40 and received a 3.5% increase what would my new salary be