Saturday

April 18, 2015

April 18, 2015

Total # Posts: 177

**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*

**Chemistry**

Determine the energy in K calories needed to convert a one pound block of ice to steam
*June 11, 2011*

**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.
*April 28, 2011*