Sherry

Most popular questions and responses by Sherry
1. statistics

The probability that a house is burglarized in the city is 5%. If 50 houses are randomly selected, what is the probability that none will be burglarized?

2. math

A boy of height 95 cm is walking away from base of a lamp post at a speed of 1.5 m/s.If the lamp post is 3.8 m above the ground, find the length of his shadow after 5 seconds.

3. physics

A 25.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 31.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the

4. physics

An older-model car accelerates from 0 to speed v in 10. s. A newer, more powerful sports car of the same mass accelerates from 0 to 4v in the same time period. Assuming the energy coming from the engine appears only as kinetic energy of the cars, compare

5. physics

A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is

6. physics

A 56.0-kg runner has a speed of 3.10 m/s at one instant during a long-distance event. (a) What is the runner's kinetic energy at this instant? KEi = J (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change? KEf

calculate the mass of the water of hydration if a hydrate loses 0.025 mol of H2O when heated

8. math

A loan has a due date of December 20. If it is made on September 19, for how many days is the loan?

9. math

Fritz benjamin buys a car costing \$12300. He agrees to make payment at the end of each month period for 8 years. He pays 7.2% interest compounded monthly. what is the amount of each payment? find the total amount of interest fritz will pay?

10. physics

A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is

11. Chemistry

A 11.0g sample of a compound containing only oxygen and carbon produce 3.0g carbon and 8.0g oxygen. Determine the empirical formula of the compound.

12. physics

At an accident scene on a level road, investigators measure a car's skid mark to be 78 m long.It was a rainy day and the coefficient of friction was estimated to be 0.38. Use these data to determine the speed of the car when the driver slammed on (and

13. physics

An archer pulls her bowstring back 0.420 m by exerting a force that increases uniformly from zero to 240 N. (a) What is the equivalent spring constant of the bow? N/m (b) How much work does the archer do in pulling the bow? J

14. statistics

Chicken Delight claims that 91 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 70 orders revealed that 60 were delivered within the promised time. At the .02 significance level, can we conclude that less

15. physics

2.A hiker used a compass to orient himself as he walked 3.00 km in a direction 50.0° north of west, and then an additional 2.00 km in a direction 20.0° south of west. The trip took 1.25 hours. Calculate the magnitude and direction of the hiker’s

16. Chem

1a) Calculate the molar concentration of the KIO3 solution provided. KIO3 2.15g/L we used 10 mL in the experiment.

17. science

A cart rolling down an incline for 5.0 seconds has an acceleration of 4.0m/s2. If the cart has a beginning speed of 2.0m/s what is its final speed?

18. biochem

4)You are informed that a compound secreted from a frog found in the Amazon basin has been showed to inhibit ATP synthesis. Without knowledge of specific details could you speculate on potential mechanisms through which this discovered compound be

19. Intermediate Algebra

convert to scientific notation....0.00024

20. math

why can't you just answer the quesstion?

21. science

WHat branches of science fall under the environmental science umbrella? Go to Wikepedia...very good article on environmental science...they list sub-categories. Depending upon what is being investigated, there are many; such as chemistry, biology,

22. physics

A 0.290-kg block along a horizontal track has a speed of 1.30 m/s immediately before colliding with a light spring of force constant 53.4 N/m located at the end of the track. (a) What is the spring's maximum compression if the track is frictionless? m

23. cups of milk

A recipe calls for 2 3/4 cups of milk. How many cups of milk, written as a fraction greater than one, are used in the recipe

24. Science

The solubility of CO2 in water at 25 degree celsis and 1 atm is 0.034 mol/L . what is the solubility under atmospheric condition? Assume that CO obeys henry's law. ( the partial pressure of CO2 in air is 0.0003 ATM

25. chemistry

A sample of oil has a mass of 65g and a volume of 80.0 mL. What is the density?

26. Physics

A balloonist, riding in the basket of a hot air balloon that is rising vertically with a constant velocity of 9.5 m/s, releases a sandbag when the balloon is 44.3 m above the ground. Neglecting air resistance, what is the bag's speed when it hits the

27. Algebra 1

A ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -49t^2 + 35t + 140 where h is in meters and t is the time in seconds since the ball

in the poem grammar poem by Rita Wong list three different metaphors used to describe english and english grammar. do you agree with her assesment and why

29. brain teaser help

The new science teacher claims he can place a beaker in the middle of the science lab and crawl into it. How? Does anyone get this or hav an idea? haha I think it was a metaphor or some joke or something :P, just to get you insterested. Because you did say

30. biochem

1)“Gluconeogenesis uses available energy and is therefore an energetically expensive process” why is gluconeogenesis necessary and under what conditions does it occur? What regulatory mechanisms ensure that glycolysis does not occur simultaneously with

31. Finance

annual net cost Monthly fee \$4, check processing fee of 20 cents, average 23 checks written per month. annual interest of 1.5 percent paid if balance exceeds \$750, \$8 monthly fee if account falls below minimum balance, average monthly balance \$815, account

32. physics

A uniform ladder, 3 m long and weighing 130 N, placed against a smooth wall, its lower end being 1.80 m from the wall. A 700N man stands on the upper most rung of the ladder located 0.45 m from the upper end of the ladder. a.) What are the vertical and

33. Intermediate Algebra

Solve using the elimination method.Show work.If system has no solution state this or infinite solution 8x+10y=-34 16x-5y=-43

34. Microeconomics

1. Complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data), either as a Microsoft Excel spreadsheet, or as a Microsoft Word table. Assume that the price is \$165 and the fixed costs are \$125, at an output level of 1. Also assume that the data

35. physics

A daredevil on a motorcycle leaves the end of a ramp with a speed of 30.5 m/s as in the figure below. If his speed is 29.0 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. m

36. physics

An elevator and rider have a mass of 1600 kg combined. What is the tension force in the cable lifting them at a steady speed of 3 m/s? Assume no friction.

37. math

A draw contains 3 black socks and 2 white socks. A sock isdrawn at random and then replaced. Find each probability. p(2 black) p(black, then white) p(white, then black) p(2white)

38. physics

A 49-kg lead ball is dropped from the leaning tower of Pisa. The tower is 55 m high. (c) What is the speed of the ball 1.3 s after it is released?

39. Math - Trig

The depth of water, h, in metres at time t, in hours, is given by the formula: h(t)=7.8+3.5sin[pi/6(t−3)]. Its a 24 hours period and t=0 is midnight. Provide an algebraic solution to determine the time(s) of day, the water reaches the depth of 10.29 m i

40. Physics

A hollow, thin-shelled cylinder of mass rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational?

41. biochem

2) Compound called Moniliformin has been shown to affect pyruvate dehydrogenase complex activity and inhibit the conversion of pyruvate to acetyl coA. Without knowing specific details on how this drug exert its inhibitory effect, could you outline

42. chemistry

Okay so i have this titration question and I don't really know the steps because everyone explains it differently. IF someone could explain me the steps of how i could solve this questions and other like this. Thanks In three runs of titration 22.8mL,

43. Physics

A ball is thrown from a point 1.1 m above the ground. The initial velocity is 20.0 m/s at an angle of 32.0° above the horizontal. (a) Find the maximum height of the ball above the ground. (b) Calculate the speed of the ball at the highest point in the

44. Physics

Jerry bicycles from his dorm to the local fitness center: 3.06 miles east and 2.07 miles north. Cindy's apartment is located 1.5 miles west of Jerry's dorm. If Cindy is able to meet Jerry at the fitness center by bicycling in a straight line, what is the

45. biotechnology!!

I'd greatly appreciate if some one could very briefly inform me on any two techniques used in agricultural biotechnology - one that relies on new biotechnology (ie molecular) and one that relies on old biotechnology (ie not molecular!) and the same for

46. physics

A 12.0-g piece of clay is launched horizontally at a 102-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 52 N/m. The piece of clay sticks to the side of the block. If the

47. Math, Statistics

According to a recent survey, 38% of americans get 8 hours or less of sleep. if 25 people are selected, find the probability that 14 or more people will get 8 hours or less of sleep.

48. Stats

Twenty randomly selected students took the statistics final. If the sample mean was 88 and the ó =5.2, construct a 95% confidence interval for the mean score of the students.

49. English

Okay so i have a have chosen 2 book (Day of the Triffids & Oryx and Crake ) We had to describe a theme that describes both these book below is the theme i proposed but my teacher said it was "to broad". So i would like some help and tips of how to make it

50. Chemistry G.12

Check if im right please: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) At a specific time in the reaction, ammonia is disappearing at rate of 0.068 mol/(L • s). What is the corresponding rate of production of water? I did Rate of Production H20 = 1/6(0.068) =

51. Algebra

A cord is cut into two pieces of different lengths. The sum of the two lengths is 12 centimeters, and the difference between the two lengths is 4 centimeters. Find the lengths of the two pieces of cord.

52. math

A bicycle wheel travels about 82 inches in 1 full rotation. What is the diameter of the wheel, to the nearest inch?

53. college algebra

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in

54. U.S. History

During the presidency of Richard Nixon, the United States a) sought to protect human rights. b) sought to close the USSR out of world markets. c) retreated into relative isolation. d) worked for a reduction of tensions known as detente. e) none of the

55. biochem

3)Based on your understanding of metabolic processes what would be the short and long term effects of inhibiting the TCA cycle? Explain why there is a need for replenishment of TCA cycle metabolites.

56. p

A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

57. physics

Two objects of masses m1 = 0.58 kg and m2 = 0.92 kg are placed on a horizontal frictionless surface and a compressed spring of force constant k = 300 N/m is placed between them as in figure (a) shown below. Neglect the mass of the spring. The spring is not

58. physics

ball of mass m = 1.70 kg is released from rest at a height h = 54.0 cm above a light vertical spring of force constant k. The ball strikes the top of the spring and compresses it a distance d = 8.80 cm Neglecting any energy losses during the collision,

59. math

a formula for calculating simple interest is I = Pr, were I is the interest earned in dollars, P is the principal or original investment, and r is the fixed rate of interest. If the amount of interest earned is \$2.25 and the interest rate is 3%, what is P?

60. Intermediate Algebra

Simplify the following exponents and rewrite it in an equivalent form with positive exponents..24x^3y^-3/72x^-5y^-1

61. Intermediate Algebra

convert to scientific notation...0.000243

62. Algebra

The radiator in Natalies car contains 6.3L of antifreeze and water.This mixture is 30% antifreeze.How much of this mixture should she drain and replace with pure antifreeze so that there will be a mixture of 505 antifreeze?

63. Art History

7. Compare the naturalism of Chinese art of the 10th to 12th centuries with the Western Romanesque art of the same time period. Use the Guanyin Bodhisattva, the handscroll, Ladies Preparing Newly Woven Silk, and the landscape paintings for specific

64. economics

Which is likely to have the larger effect on the CPI, a 2 percent increase in food or a 3 percent increase in diamond rights? (Hint: Assume a normally distributed country with male:female ratio of 1:1) Can anyone please give me some hints to do it???or

65. economic

Suppose that your firm was accused of illegally conspiring with other sellers to act as a monopolist. In searching for an expert witness, you discover one economist who has calculate the cross elasticity of demand for your industry's product to be+2.05,

66. physics

A 3.30-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.204 s, what is the

67. Algebra

Write linear equation in form y=mx+b given this condition parallel to y=-1/2x +1, through (4,2)?

68. psychology

Aresearcher is studying people of normal weight and obese individuals.She wants to know how the time of day affects hunger feelings in these two groups. when, during the experiment, the researcher looks at her watch, she has introduced what into the

69. Intermediate Algebra

Dale and Kim can assemble a swing set in 1 1/2 hours.Working alone it takes kim 4 hours longer than Dale to assemble the swing set .How long does it take Dale working alone to assemble the swing set?

70. Intermediate Algebra

Short answer.Raise quanity in parenthesis to the indicated exponents and simplify te resulting expression. Express powers with positive exponents.(50x^2y^-4/200x^-2y^4)^3

71. physics

a ball is dropped from a height of 10 meters.if the energy of the ball is reduced by 40% after striking the ground,how high can the ball bounce back?

72. calculus

Please help me? ln(x+1)-ln(x-2)=ln(5) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve logarithmic equation.

73. Art

What is it called when you use one word to draw a picture of that word. The letters must be all the same way? I know Ive seen pictures like this in like Dentist office?

74. biochem

5)A recent study showed that a newly discovered drug that acts as an uncoupling agent of the electron transport chain was causing significant weight loss in humans. A) Describe how uncoupling agents work? b) Based on your knowledge of metabolic processes

75. physics

A 12.0-g piece of clay is launched horizontally at a 102-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 52 N/m. The piece of clay sticks to the side of the block. If the

76. math

A submarine enters the sea at an initial speed of 2 meters per minute. The submarine's speed triples every minute. What is the submarine's speed after 5 minutes?

77. psycology

in order to increase self esteem ,experts say you should what

78. Physics

Modern bowling alleys have automatic ball returns. The ball is lifted to a height of 2.50 at the end of the alley and, starting from rest, rolls down a ramp. It continues to roll horizontally and eventually rolls up a ramp at the other end that is 0.700

79. Intermediate Algebra

Find the product...7x(-7x^2+9x+8)

80. Intermediate Algebra

(1/2)^3(2/3)^4/5/6^3

81. Intermediate Algebra

Short Answer.Raise the quanity in parenthesis to the indicated exponents and simplify.Express answers with positive exponents.(-27x^0y^-2/54x^-5y^-4)^-2

82. algebra

Write the slope intercept equation for the line that passes through (14,-2) and is perpendicular to 7x-10y=18.Please show work.

83. geography

How do a country's size and shape affect its power and stability?

84. pre algebra

How do I solve this equation the find te slope of the line? Please show me the steps in solving this equation.

85. basic math

how do i writ 21/100 in decimal form

86. economic

In response to increasing thefts by drug addicts, the government passess ligislations increasing both the penalty and the probability of punishment for suppliers of illegal drugs. what would you predict would happen to the rate of property crime committed

87. English

How do euphemisms, cliché’s, proverbs and ready phrases influence the way you write and speak? Don't provide me an answer rather put me on the right track of thinking. Please and Thank you!

88. Health

set a SMART mental health goal and One social health goal

89. health II

Every nerve impulses stimulate the breathing process or ventilation, which moves air through a series of passages into and out of the lungs

90. pscyhology

tentative explanation is known as ?

91. psycology

in order to increase self esteem ,experts say you should what

92. chemistry

wh at is prtoplam

93. chemistry

a 225.0 gram sample of aluminum is heated and the temperature increased from 50.0 celsius to 65.0 celsius for temperature change of 15.0 celsius. how many calories of heat was absorbed to produce this temperature change?

94. Physics

Vector A is directed along the positive y-axis and has magnitude 5.0 units. Vector B is directed along the negative x-axis and has magnitude 6.0 unit. (a) What are the magnitude and direction of A + B? (b) What are the magnitude and direction of A − B?

95. Capstone Accounting

Assessment of the strategic fit between Square D and Schneider. What are the pros and cons of a combination?

96. math

My sister is playing a dart game at an arcade. She can earn 2, 3, or 6 points with each dart. She scored 24 points. How many ways could she score 24 points given that each dart thrown landed on the dart board?

97. Intermediate Algebra

Solve by factoring..2a^2+3=7a

98. Intermediate Algebra

Use scientific notation to divide the following 2 numbers .Express the answer using scientific notation; retain at least3 decimal places (9.4*10^6)/(4.97*10^2)

99. Intermediate Algebra

simplify the follwing expression in terms of i , the squareroot of -16