Tuesday
July 7, 2015

Posts by carolyn


Total # Posts: 179

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 dont have to prove area just side lengths.
May 21, 2015

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?
April 25, 2015

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)
April 14, 2015

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 reduces the flow rate by...
April 7, 2015

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 a thermal ...
April 7, 2015

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 a thermal ...
April 6, 2015

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 reduces the flow rate by...
April 6, 2015

Physics
How far does water travel if you restrict the hose opening by 80%
April 4, 2015

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 reduces the flow rate by...
April 4, 2015

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 a thermal ...
April 4, 2015

Physics
In 2286, Admiral Kirk and his crew were forced to use the slingshot effect in a stolen Klingon Bird-of-Prey to travel back in time to the late 20th century to retrieve two humpback whales. The stolen Klingon Bird-of-Prey traveled towards the sun at a velocity of vs while the ...
March 23, 2015

Physics
Consider holding a carton of milk in your hand. The force of the bicep muscle actsat an angle of 15 degrees to the vertical, while the weight of the arm and the milk both act downwards. The distance from the elbow to where the bicep muscle is attached via the distal bicep ...
March 23, 2015

physics
A 1kg block of wood is moving with a velocity of 10 m/s on top of a table. The coefficient of kinetic friction between the block of wood and the table is 0.1. The block of wood is a cube with sides of 12 cm. How far does the block move before coming to a stop? If momentum is ...
March 23, 2015

Physics
Consider holding a carton of milk in your hand. The force of the bicep muscle actsat an angle of 15 degrees to the vertical, while the weight of the arm and the milk both act downwards. The distance from the elbow to where the bicep muscle is attached via the distal bicep ...
March 19, 2015

Physics
In 2286, Admiral Kirk and his crew were forced to use the slingshot effect in a stolen Klingon Bird-of-Prey to travel back in time to the late 20th century to retrieve two humpback whales. The stolen Klingon Bird-of-Prey traveled towards the sun at a velocity of vs while the ...
March 19, 2015

Physics
A 1kg block of wood is moving with a velocity of 10 m/s on top of a table. The coefficient of kinetic friction between the block of wood and the table is 0.1. The block of wood is a cube with sides of 12 cm. How far does the block move before coming to a stop? If momentum is ...
March 19, 2015

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 the projectile when it...
March 18, 2015

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 degrees to the horizontal...
February 25, 2015

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 degrees to the horizontal...
February 25, 2015

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 height of the tree on...
February 3, 2015

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 blocks. If the ...
February 3, 2015

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 height of the tree on...
February 2, 2015

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 required between the 2 kg ...
February 2, 2015

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 blocks. If the ...
February 2, 2015

Algebra
How many 12-inch square tiles are needed to completely cover the floor of a greenhouse that is 25 feet by 40 feet ?
January 26, 2015

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 of the first digit. ...
January 6, 2015

math
could you please show me the steps to do this problem? 8 2/7-7 1/3
December 9, 2014

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 chapter, which ...
October 26, 2014

comp1
Contrast/comparison on the Parent Trap and the Remake of the Parent Trap I need help asap.
October 5, 2014

Math z-scores
find the z-scores for which 92% of the distribution's area lies between -z and z
September 30, 2014

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 the second factory and...
September 15, 2014

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
September 15, 2014

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 the second factory and...
September 15, 2014

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 length of 2–4 pages, ...
July 10, 2014

algebra
how do you graph linear equation 2x= -10y and x+5y=3
May 23, 2014

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
April 27, 2014

Proximity, alignment, repetition and contrast
Patterns and shapes that appear alike and are grouped together produce
April 24, 2014

Composition
How does taking observations obstruct or halt the writing process
March 27, 2014

Math
Yes. She actually can 33 1/3 boards.
February 10, 2014

Interent Basics
The social networking site tat caters to artists and musicians
February 2, 2014

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?
November 7, 2013

calculus
i need help with proving five steps of l hospitals rule for (ex^2-1)/x
October 30, 2013

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%?
October 27, 2013

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. The breakup of the...
October 6, 2013

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 Titusville, Pennsylvania. D...
September 29, 2013

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
August 13, 2013

social studies
Is this answer right? my answer has ( ) around it The first fully developed American factory system emerged in the _______ industry. A. iron B. distilling C. sugarcane (D). textile
July 30, 2013

social studies
Thank you! I love this site.
July 16, 2013

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 Mississippi.
July 16, 2013

social studies
thank you so much my history book and the internet had me confused. I was torn in between answer C and answer A
July 16, 2013

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 of the ...
July 16, 2013

social studies
Thank you ^-^
July 15, 2013

social studies
Can someone tell me if this is correct my answer has ( ) around it The Articles of Confederation called for which of the following? A. The Northwest Ordinance B. A chief executive (C). A single legislative body D. The right of the legislature to assess taxes
July 15, 2013

econ
Congress' control over the Fed is a. substantial because it can cut off necessary appropriations b. limited because the Fed is not dependent on Congress for the funds to support its operations c. substantial because the members of the Board of Governors can be replaced ...
May 27, 2013

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 C) $50,000 in new ...
May 27, 2013

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 control and, a,b,c,d ...
May 22, 2013

Computers
Which of the following operating system types is used in medical equipment or a cash register? A. Multi-user/multi-tasking B. Real-time C. Single-user/multi-tasking D. Single-user/single-tasking
May 22, 2013

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?
April 27, 2013

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 old? b) How much ...
April 25, 2013

ela
"That suddenly above the bee is heard," Is this an example of sensory language? It pertains one of the 5 senses(hearing)so I'm assuming.
March 21, 2013

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
March 5, 2013

Math 6th grade
Help please!!:(
March 5, 2013

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!
March 5, 2013

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 tension in the rod?
February 6, 2013

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 the pillow changed?
February 6, 2013

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
February 6, 2013

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
February 6, 2013

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
February 6, 2013

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 determined from the given ...
February 6, 2013

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
February 6, 2013

astronomy
Assume that the mass of a sun-like star is 2.50 x 10^5 Earth masses and that its radius is about 101.0 times that of Earth. The density of Earth is about 5,500 kg/m^3. What is the density of this star?
February 4, 2013

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 estimate the mean to ...
December 6, 2012

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 35 52 45 41
November 21, 2012

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, 708, 711, 713, 714, ...
November 14, 2012

statistics
I need help with p for a hypothesis test for normal distribution.
October 20, 2012

Math
two times the sume of 3 and y amounts to 24
September 25, 2012

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 words a rule you can ...
August 27, 2012

Science
The site you referred me to is useless when you don't know how to do this kind of math. Thnaks for your help though,
July 20, 2012

Science
This is all the information I have that is in the question given to me. The speeds are all most probable particle speed ms & Average particle speed ms.
July 20, 2012

Science
If oxygen, Carbon dioxide, and xenon gases are heated at 500k with a probable particle speed of 1094 and an average particle speed of 1234, what id the mass of an atom or molcule for each?
July 20, 2012

precal
De Moivre’s theorem states, “If z = r(cos u + i sin u), then zn = rn(cos nu + i sin nu).” • Verify de Moivre’s theorem for n = 2. a. Provide a correct proof that includes written justification for each step.
July 13, 2012

trig
sin t /1-cos t - 1+ cos t/sin t= 0
July 10, 2012

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
July 10, 2012

Principles of Management - Strategic Management
1b,2b,3c4d,5a,6b,7a,8d,9b,10b,11c,12b,13c,14a,15b,16b,17d,18a,19d,20b,
July 10, 2012

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 the FEWEST late ...
June 29, 2012

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?
May 23, 2012

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 is available and the ...
May 22, 2012

algebra 2
Minnie and Steve have arectangular swimming pool that is 12 ft. wide and 20 feet long. They are going to build a tile border of uniform width around the pool. They have 160 sq. ft. of tile. How wide should the border be?
May 22, 2012

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?
April 25, 2012

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?
April 23, 2012

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?
April 23, 2012

Algebra 2
The Pumpkin Patch Doll Company has detrmined that the profit the company makes on Pumpkin Patch Dolls if given by the equation y=3x2 + 720 x - 17800, where y is the profit measured in dollars and x is the number of Pumpkin Patch dolls. Find the number of dolls that will ...
April 23, 2012

math
Solve the equation for the value of , where . a) Pass b) c) d) e) 7:
March 29, 2012

ALGEBRA
NEED TO FIND THE DOMAIN AND RANGE OF F(X)=2X-3
March 10, 2012

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.
March 8, 2012

algebra
A certain toilet tank can be emptied in 6 sec through its drain when it is flushed. This happens at the same time that the water is flowing in through the inlet pipe. Withthe drain closed, the inlet pipe canfill the tank in 30 sec. How long would it take to drain the tank if ...
February 12, 2012

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. Please note that your ...
November 14, 2011

math
the additional month of interest (note that the problem specifies 2% simple interest per month)? As a professional photographer, Marion has seen the trend away from film cameras as customers purchase low-end digital cameras and printers in order to avoid processing fees ...
October 13, 2011

physical science
a player uses a hockey stick to increase the speed of a 0.200kg hockey puck by 6 m/s in 2 seconds how much did the hockey puck accelerate
October 4, 2011

Physical science
Which of the following star colors has the highest temperature?
August 11, 2011

  1. Pages:
  2. 1
  3. 2
  4. Next>>

Members