carolyn

Most popular questions and responses by carolyn
1. algebra

The Length of time (T) in seconds it takes the pendulum of a clock to swint through one complete cycle is given by the formula T=2pie square root of 7 divided by 32 where L is the length in feet, of the pendulum, and pie is approximately 22 divided by 7.

asked on April 16, 2011
2. physics

Lunar astronauts placed a reflector on the Moon’s surface, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round trip time. The taken for the laser pulse to travel there and back again can be measured to

asked on November 8, 2015
3. Math 221 Week3

A distribution center receives shipment of a product from three different factories in the quantities of 60, 35 and 25. Three times a product is selected at random, each time without replacement. Find the probability that (a) all three products came from

asked on September 15, 2014
4. physics

A rigid rod holds a restaurant sign horizontally from the side of a building. The force due to gravity acting on the sign is 165N with the angle between the sign and the rod being 50 degrees. Ignoring the weight of the rod what is the magnitude of the

asked on February 6, 2013
5. Chemistry

How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0 ∘C, to steam at 115 ∘C. The heat capacity of ice is 2.09 J/g∘C and that of steam is 1.84 J/g∘C.

asked on April 19, 2018
6. Math 221 Week3

A probability experiment consists of rolling a 6 sided die. Find the probability of the event below: rolling a number less than 3? The probability is

asked on September 15, 2014
7. Math

The length of time (T) in seconds it takes the pendulum of a clock to swing through one complete cycle is givenby the formula T=2pi square root of L divided by 32 where L is the length in feet, of the pendulum, and pi is approximately 22 divided by 7. How

asked on April 16, 2011
8. physics

An electrostatic paint sprayer has a 0.200-m-diameter metal sphere at a potential of 25.0 kV that repels paint droplets onto a grounded object. What charge must a 0.100-mg drop of paint have to arrive at the object with a speed of 10.0 m/s?

asked on November 9, 2015
9. physics

An ECG monitor must have an RC time constant less than 100 μs to be able to measure variations in voltage over small time intervals. If the resistance of the circuit (due mostly to that of the patient’s chest) is 1000 Ω, what is the maximum capacitance

asked on November 15, 2015
10. physics

Alkaline batteries have the advantage of putting out constant voltage until very nearly the end of their life. How long will an alkaline battery rated at 1 A ⋅ h and 1.58 V keep a 1 W flashlight bulb burning?

asked on November 7, 2015
11. Chemistry

I've been given the formula NH4Br, and I want to make sure I properly separated it into cations and anions. I got NH+1 and Br-1. The only thing is I don't get why NH in the formula is NH4. Where does the four come from?

asked on May 31, 2009
12. Math z-scores

find the z-scores for which 92% of the distribution's area lies between -z and z

asked on September 30, 2014
13. american history

. Which of the following was the primary cause of the Balkan Wars conducted during the Clinton administration? A. The rise to power of Slobodan Milosevic in Serbia B. Muslim activism in Bosnia C. The UN peacekeepers' inability to stem ethnic cleansing D.

asked on October 6, 2013
14. econ

Suppose the reserve requirement ratio is 20 percent. Assuming no bank holds excess reserves and nobody withdraws cash, a \$10,000 injection of new excess reserves by the Fed can create A) \$2,000 in new checkable deposits B) \$10,000 in new checkable deposits

asked on May 27, 2013
15. Chemistry

Write a procedure to demonstrate the effect of higher concentrations of HCl on its rate of reaction with antacid tablets. I have HCl with a concentration of 1.0 mol/L. This is what I have so far. Are my concentrations correct for this procedure? E is my

asked on May 22, 2013
16. English

2. ______________________ is the point of view that is most like a video camera recording events. a.First Person b.Objective c.Limited Omniscent d.Omniscent I think it is C, but I'm not really sure. Could really use some help, thanks!

asked on September 17, 2017
17. LSAT PREP

A company employee generates a series of five-digit product codes in accordance with the following rules: The codes use the digits 0, 1, 2, 3, and 4, and no others. Each digit occurs exactly once in any code. The second digit has a value exactly twice that

asked on January 6, 2015
18. physics

A car slows down uniformly from a speed of 24.0 m/s to rest in 4.50 s. How far did it travel in that time?

asked on December 18, 2016
19. Algebra 2

Ann wants to plant a rectangular garden next to a straight river. She has 120 feet of fencing and will not fence the side of the garden next to the river. What dimensions will produce the largest garden?

asked on April 23, 2012
20. Physics

A force of 5N and a force of 15N acting on an object can produce the following net forces except a. 20N b. 15N c. 10N d. 5N

asked on February 6, 2013
21. physics

While sitting in a lounge chair with the back inclined at an angle of 10 degrees from the vertical, you tuck a pillow between your head and the chair. Then you lower the chair back to 40 degrees and doze with the pillow in place. How has the net force on

asked on February 6, 2013
22. Investments

At the end of each year a self-employed person deposits \$1,500 in a retirement account that earns 10 percent annually. a) How much will be in the account when the individual retired at the age of 65 if the contribution start when the person is 45 years

asked on April 25, 2013
23. math

How many amps of current does a 1,000 watt hair dryer draw on a 110 volt line?

asked on September 23, 2010
24. physics

A severely myopic patient has a far point of 5.00 cm. By how many diopters should the power of his eye be reduced in laser vision correction to obtain normal distant vision for him? Assume the image at the back of the eye is formed 0.2 m from the eye's

asked on November 27, 2015
25. Algebra

A.Driving from El Paso to San Antonia on a bus ...560 miles traveling at avg speed of 60 miles per hr how do I make a graph with the time & distance. B. have to estimate distance bus tvls in 2 hrs...2 3/4 hrs...3.5 hrs...7.25 hrs.. C.need to describe in

asked on August 27, 2012
26. Chemistry

How many grams of MgO are produced during an enthalpy change of -96.0 KJ if 2Mg(s) + O2(g) -> 2MgO(s) and delta H= -1204kj

asked on August 13, 2013
27. math

jim has grades of 84, 65, 76 on three tests. what grade must he obtain on the next test to have an average of exactly 80% for all four tests?

asked on April 27, 2013
28. biology

If short hair (L) is dominant to long hair (l), then to determine the genotype of a short-haired animal it should be crossed with Answer a. Ll b. ll c. LL d. All of the above. e. None of the above.

asked on March 8, 2012
29. physics

A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. Find the temperature increase caused in the 8.00 kg of affected tissue if all the energy heats up the tissue with a specific heat capacity

asked on November 8, 2015
30. Math

A rectangular prism has a volume of 256 cubic feet, what are the dimensions in feet of the prism?

asked on July 11, 2015
31. Art 101

Briefly describe the works of art and the artists to discuss, Where is/are the works located? What time period is the art from? Writing about Apollo and sculptor Vulca.

asked on April 28, 2011
32. physics

Two forces act on an object. The magnitude of the net force acting on the object a. equals the sum of the magnitude of the two forces b. equals the difference in the magnitudes of the two forces c. equals the average of the two forces d. cannot be

asked on February 6, 2013
33. Chemistry

a mixture of methane CH4 and ethane C2H6 is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 346mmHg at the same temp and volume as the original mixture, calculate the ratio of moles of CO2

asked on March 29, 2011
34. Chemistry

a mixture of methane CH4 and ethane C2H6 is stored in a container at 294 mmHg. The gases are burned in air to form CO2 and H2O. If the pressure of CO2 is 346mmHg at the same temp and volume as the original mixture, calculate the ratio of moles of CO2

asked on March 29, 2011
35. Physics

Lunar astronauts placed a reflector on the Moon’s surface, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round trip time. The taken for the laser pulse to travel there and back again can be measured to

asked on November 7, 2015
36. algebra 2

A clock loses 10 minutes each day. How many days will it take to reach a point where the clock will indicate the right time?

asked on May 23, 2012
37. math

Find an equation of the line that satisfies the given conditions: through (2, 4), perpendicular to x − 4y + 7 = 0.

asked on January 27, 2016
38. physics

On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by 45.0 °C in 120 s. The specific heat of spaghetti is 3760 J/kg °C and the microwaves are absorbed over a circular area 20.0 cm in diameter. What is the

asked on November 27, 2015
39. math

At 9:00 pm the outside temperature was 20 celcius, by midnight the temperature had dropped x degrees. Which of the following represents the midnight temperature? 20 + x 20-x 20 20x

asked on October 24, 2010
40. physics

Consider the following system with a 2 kg mass sitting on a table, connected to both 1 kg and 3 kg masses by strings which go over two separate pulleys and are pulling on the 2 kg mass in opposite directions. What static friction coefficient would be

asked on February 2, 2015
41. World Literature

When a character struggles with outside forces he has? a. conflict b. external conflict c.internal conflict d. suspense e. all of the above

asked on May 19, 2008
42. Geometry

mx^2+12x+9m=0. for what values of m will the equation have one repeated root? I can't remember how to calculate double root values

asked on December 7, 2015
43. chemistry

One mole of an ideal gas is expanded from a volume of 1.00 atm. How much work (in joules) is performed on the surroundings? Ignore sig figs for this problem. (T=300 K; 1 L*atm=101.3 J)

asked on April 14, 2015
44. physics

Tarzan is running towards a cliff, ready to swing down rescue Jane from some poisonous snakes, and make it back up to a tree on the other side. For now, we are going to assume energy is conserved and ignore momentum. If the height of the cliff is 10m, the

asked on February 2, 2015
45. statistics

For the major airlines, 21% of all flights depart at least 15 minutes late with a standard deviation of 5%. Currently, 24% of all American Airlines flights depart at least 15 minutes late. If American wants to be in the top 10% of all major airlines with

asked on June 29, 2012
46. Math

What is the least common multiple of 5a squared and 7a cubed?

asked on April 15, 2019
47. Finance

the cost in 15 years is 214,000 to provide a college education. Can I have enough to take \$75,000 today and invest it for the next 15 years at 5%?

asked on October 27, 2013
48. statistics

The number of grams of carbohydrates in a 12-ounce serving of a regular soft drink is listed here for a random sample of sodas. Find the 99% confidence interval for the mean number of carbohydrates in all brands of soda. 48 37 52 40 43 46 41 38 41 45 45 33

asked on November 21, 2012
49. math

If you borrow \$1000.00 at 6% for one year, how much interest will you owe. how much will you have to pay back

asked on November 16, 2010
50. Finance

Dont' know how to approach this problem. J. F. & Sons must choose between two pieces of equipment. Equipment A has an NPV of \$30,000 and a useful life of 3 years. Equipment B has an NPV of \$50,000 and a useful life of 7 years. If the firm typically uses a

asked on March 30, 2010
51. physics

Consider a modified Atwood machine, with a mass sitting on an inclined plane connected by a string which stretches over a pulley connected to a hanging mass. Friction is ignored. Draw a free body diagram for both blocks. Apply Newton's second law to both

asked on February 2, 2015
52. geometry

Construction: The midpoint of a line segment can be constructed. Theorem: If the consecutive midpoints of the sides of a parallelogram are joined in order, then the quadrilateral formed from the midpoints is a parallelogram. Write an essay (suggested

asked on July 10, 2014
53. FIN1103-39

You think in 15years, it will cost \$214,000 to provide your child with a 4 year college education. Will you have enough if you take \$75,000 today and invest it for the next 5 years with \$1million

asked on April 27, 2014
54. child development

tyrone groups words with agent qualities as subjects and words with action qualities as verbs. he then merges these categories into sentences. tyrone is demonstrating?

asked on November 7, 2013
55. Economics

EconMacro4 Chapter 9 Aggregate Expenditures and Demand 7. A. What are the components of aggregate expenditure? Page 148 Add to the consumption function, investment, government purchases and net exports (C + I + G + (X-M). B. In the model developed in this

asked on October 26, 2014
56. physics

Which of the following situations describes inertia? a. A stationary object tends to resist being moved. b. A moving object tends to resist a change in speed. c. A moing object tends to resist a change in direction d. all of the above

asked on February 6, 2013
57. physics

A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. Find the temperature increase caused in the 8.00 kg of affected tissue if all the energy heats up the tissue with a specific heat capacity

asked on November 7, 2015
58. physics

Tarzan is running towards a cliff, ready to swing down rescue Jane from some poisonous snakes, and make it back up to a tree on the other side. For now, we are going to assume energy is conserved and ignore momentum. If the height of the cliff is 10m, the

asked on February 3, 2015
59. Physics

Consider a modified Atwood machine, with a mass sitting on an inclined plane connected by a string which stretches over a pulley connected to a hanging mass. Friction is ignored. Draw a free body diagram for both blocks. Apply Newton's second law to both

asked on February 3, 2015
60. History

Which of the following statements about John D. Rockefeller is most accurate? A. He founded the Standard Oil Company when he was 24 years old. B. He considered competition to be the central ideal of capitalism. C. He drilled the first oil well near

asked on September 29, 2013
61. math

Let f(x) = 2x/(x^2+9). Find the domain of f. Write your answer using interval notation.

asked on January 21, 2016
62. english

Dr.king was born on January 15, 1929 and he died on April 4, 1968.

asked on October 15, 2015
63. Statistics

A quality control inspector wants to estimate the mean inside diameter of the washers produced by a certain machine. A preliminary sample indicates that the inside diameters have a standard deviation of 0.30 millimeters. What sample size does he need to

asked on December 6, 2012
64. trig

sin t /1-cos t - 1+ cos t/sin t= 0

asked on July 10, 2012
65. chemistry

Discussion Question 1 State three examples each of acids, bases, and salts commonly used in therapeutic processes. From the examples you state, select one acid, one base, and one salt and describe how and where they are used in therapeutic processes.

asked on November 14, 2011
66. physics

A skateboarder in a death defying stunt decides to launch herself from a ramp on a hill. The skateboarder leaves the ramp at a height of 1.4m above the slope, traveling 15m/s and at an angle of 40 degrees to the horizontal. The slope is inclined at 45

asked on February 25, 2015
67. Algebra

How many 12-inch square tiles are needed to completely cover the floor of a greenhouse that is 25 feet by 40 feet ?

asked on January 26, 2015
68. Algebra 2

Farmer Jones wants to build a recangular pen with three equalparts. He has 200 feet of fencing. What dimensions willproduce the largest pen?

asked on April 23, 2012
69. physics

A laser with a power output of 2 mW at a wavelength of 400 nm is projected onto a calcium metal surface. What power is carried away by the electrons? The binding energy of the metal is 2.31 eV.

asked on November 27, 2015
70. physics

Alkaline batteries have the advantage of putting out constant voltage until very nearly the end of their life. How long will an alkaline battery rated at 1 A ⋅ h and 1.58 V keep a 1 W flashlight bulb burning?

asked on November 8, 2015
71. Physics

A projectile is launched from a compressed spring on an inclined plane. The spring constant of the spring is k= 10 N/m, the mass is 1kg and the plane is inclined 30 degrees to the horizontal. If the spring is compressed 15 cm what will be the velocity of

asked on March 18, 2015
72. Math 221

A distribution center receives shipment of a product from three different factories in the quantities of 60, 30 and 20. Three times a product is selected at random, each time without replacement. Find the probability that (a) all three products came from

asked on September 15, 2014
73. algebra

how do you graph linear equation 2x= -10y and x+5y=3

asked on May 23, 2014
74. social studies

my answer has ( ) around it With respect to the eighteenth century, the concept of the "middle ground" is helpful in A. understanding the attitudes of Indians living between the Appalachians and the Mississippi. B. explaining the attitudes and preferences

asked on July 16, 2013
75. Math 6th grade

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism?Please help!

asked on March 5, 2013
76. Algebra 2

A retail lumberyard plans to store lumber in a rectangular region adjoining the sales office. The region will be fenced on three sides and the fourth side will be bounded by the wall of the office. Find the dimensions of the region if 350 feet of fencing

asked on May 22, 2012
77. maths

Andrew has 7 20c coins and 5 50c coins in his piggy bank. What is the smallest number of coins he might have to shake out to be certain of having 2 50c coins?

asked on April 25, 2012
78. Physical science

Which of the following star colors has the highest temperature?

asked on August 11, 2011
79. Chemistry

Determine the energy in K calories needed to convert a one pound block of ice to steam

asked on June 11, 2011
80. math

Find an equation of the line that satisfies the given conditions. through (2, 4) perpendicular to x − 4y + 7 = 0 I know that you would set it up as -4y = -x - 7, but would you divide the 4 to get slope = (1/4)x, which would make the perpendicular slope

asked on January 29, 2016
81. geometry

i need to figure out side lengths of congruent right isosceles triangle with no lengths given. I know that the hypotenese is 1 per pythogoras constant and the area is a^2/2. I don't have to prove area just side lengths.

asked on May 21, 2015
82. physics

Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with

asked on April 4, 2015
83. physics

A skateboarder in a death defying stunt decides to launch herself from a ramp on a hill. The skateboarder leaves the ramp at a height of 1.4m above the slope, traveling 15m/s and at an angle of 40 degrees to the horizontal. The slope is inclined at 45

asked on February 25, 2015
84. college

CheckPoint: Court System Structure I * Resource: The Courts in Our Criminal Justice System * Due Date: Day 2, 10/20/2009 [Individual forum] * Review Ch. 4 in The Courts in Our Criminal Justice System. * Write a 200- to 300-word response comparing the state

asked on October 20, 2009
85. Math

A grandmother needs \$50,000 for her here grandsons university in 10 years. She plans to make equal bi-weekly payments to a savings account for the first 6 years at an interest rate of 3.9% compounded bi-weekly. She will then leave that sum to accumulate

asked on March 1, 2018
86. Physics

A 4 kg block is placed on an incline at an angle of 30 degrees. If the coefficient of static friction is 0.3 and the coefficient of kinetic friction is 0.2 what is the net force on the block?

asked on April 25, 2015
87. physics

Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with

asked on April 7, 2015
88. Physics

Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with

asked on April 6, 2015
89. Physics

You hold a hose 45 degrees to the horizontal and at a height of 1 m from the floor. The water reaches a maximum distance of 10 m from where you are standing. Now you place your thumb over the end of the hose to occlude the opening by 80%, which in turn

asked on April 6, 2015
90. Interent Basics

The social networking site tat caters to artists and musicians

asked on February 2, 2014
91. social studies

I was wondering if this is right my answer has ( ) around it During Jefferson's presidency, cities were (A). mainly ports for international trade. B. mostly the haunts of thieves and degenerates. C. mainly industrial centers. D. mostly found along the

asked on July 16, 2013
92. Math

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism? Help please

asked on March 5, 2013
93. physics

An objectis at rest on an incline. The component of gravity acting downward and along the incline on the object is described as Fg,x = +8.0N. Which axis is pointing up the incline? a. + x axis b. + y axis c. - x axis d - y axis

asked on February 6, 2013
94. physics

Which of the following is true of inertia? a. It is described in Newton's first law of motion b. It is a property of motion c. It is measured by weight d. all of the above

asked on February 6, 2013
95. statistics

The following data set gives FICO credit scores of a sample of 40 mortgage applicants to a local bank. (Note that the scores are in increasing order for your convenience.) 444, 497, 502, 517, 532, 559, 568, 598, 611, 636, 637, 657, 681, 681, 693, 698, 701,

asked on November 14, 2012
96. trig

Prove sin 1 cos  1 cos sin  0 1. Show each step of your proof. 2. Provide written justification for each step of your proof. C. If you use sources, include all in-text citations and references in

asked on July 10, 2012
97. ALGEBRA

NEED TO FIND THE DOMAIN AND RANGE OF F(X)=2X-3

asked on March 10, 2012
98. geometry

A ladder is propped against a wall. If the top of the ladder reaches 18 feet up the wall and the base of the ladder is 6 feet from the base of the wall, how long is the ladder?

asked on January 25, 2011
99. math

Which of the following is the complete solution for the equation (x-8) (x+6)=0 1. 8 only 2. 6 only 3. 8 and -6

asked on October 24, 2010
100. math

Sam wants to make concrete blocks that are 24 inches by 24 inches by 4 inches thick. How man blocks can he make from 1 cubic yard of concrete

asked on October 19, 2010

1. 1
2. 2