Thursday

July 31, 2014

July 31, 2014

Total # Posts: 817

**Physics**

A water skier, moving at a speed of 8.36 m/s, is being pulled by a tow rope that makes an angle of 33.4 ° with respect to the velocity of the boat (see the drawing). The tow rope is parallel to the water. The skier is moving in the same direction as the boat. If the tensio...

**quote a reference**

im writting a essay for child care how do i quote a reference from a book can you give an example

**4 grade math**

Remember PEMDAs. It tells the order of operations. M for multiplication comes first. 4+8+7/216 Next is D for division. 4+8+(7/216) Let's pretend it's a fraction for right now. Next is A for Addition 12+(7/216) Your result in mixed number form is 12 7/216. As an imprope...

**economics**

5. A market contains a group of identical price-taking firms. Each firm has a marginal cost curve MC(Q) = 2Q, where Q is the annual output of each firm. A study reveals that each firm will produce if the price exceeds $20 per unit and will shut down if the price is less than $...

**Physics**

A rifle is pointed horizantally 100 meters away from a target. The bullet hits 0.75 millimeters below the target. How long did it take to get there? What was the velocity of the bullet when it was first shot?

**chemistry help please ASAP**

how do I find two positive ions and two negative ions that are isoelectronic with a) Ar b) Xe

**chemistry please help ASAP**

how do I find two positive ions and two negative ions that are isoelectronic with a) Ar b) Xe

**sport**

compare and contrast the influences legal factors and regulatory bodies on health safety in sport. case law vs civil law similarities and differeences.

**sport**

what are the legal factors and regulatory bodies that influence health and safety in sport thank you.

**calculus**

find limit as x aproches 0 in the equation (5sin(x))/(x^2-13x)

**chemistry - help**

the density of water is 62.4 lbs/ft^3.what mass of water in kg will a rectangular hold if it measures 2.00 ft by 3.00 ft by 6.00 inches?

**chemistry help ASAP**

i don't understand, i can:t get the correct answer . please help

**chemistry help ASAP**

a graduated cylinder contains 20.0 ml of water. when 100.g of a brass cylinder were added to the graduated cylinder, the water level rose to 32.6 ml. given this information what is the density of the brass cylinder?

**chemistry-HELP ASAP**

the density of water is 62.4 lbs/ft^3.what mass of water in kg will a rectangular hold if it measures 2.00 ft by 3.00 ft by 6.00 inches?

**Physics**

Janet jumps oﬀ a high diving platform with a horizontal velocity of 2.37 m/s and lands in the water 1.9 s later. How high is the platform? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m

**math**

what's the explicit formula for 8,15,27

**chemistry**

If 434 g SO2 escaped into the atmosphere and all the escaped SO2 were converted to H2SO4. How many grams of H2SO4 would be produced in the atmosphere?

**Medical Seekers **

okayyyyyyyyyyyyyyy................ umm....recieve data from transfer patients?

**Electronic Health records**

How can confidentiality be maintained whle using a computer for patient records?

**Medical**

Okay i will do that next time

**Medical**

HOw does Ultrasonograph create an image of the body part such as a developing fetus?

**HealthCare**

What is a major use for the internet in healthcare?

**Logic**

modus ponens

**AP US History**

To what extent would it be accurate to say that the New England, Middle, and Southern colonies had merged to create a single American Society by the outbreak of the revolution?

**Physics**

In a total time of 25s, a field hockey player runs 25 m [26 degrees N of E] and then runs 32 m [18 degrees S of E] determine her average velocity.

**physics**

20sin(30degress)

**law**

hi thanks for ans but i am in the uk so is there a case i can show that would help me with this question . (man accused of drink driving on private drive that is not part of road).

**law**

person arrested on private drive on suspition of drink driving what are law rules on drink driving. person not on public road. is there a case that could argue he is not guilty

**American History**

3. In dissent, Justice Harlan wrote the "real meaning" of the railcar segregation law was to suggest that "colored citizens are so inferior and degraded that they cannot be allowed to sit in the public coaches occupied by white citizens." How might we figur...

**Math**

(5a)to the power of 3, for a = -1 I just want to know if both of the numbers in the parenthesis have to go to the power of three or if only -1 goes. Thanks :)

**Managerial Finance**

Current ratio is lower than the industry median of 1.51 but higher than the lower quartile of .81. This could be viewed negatively by the industry because the lower the current ration the less liquid a company is. So East Coast Yachts is not as liquid of a company as some of t...

**CHEMISTRY**

may i please get some notes on stoichiometry because i dont seem to be getting anything.

**7th grade science**

I JUST DID THIS RIGHT NOW FOR HOMEWORK =) 1. did i get enough data? 2.observations at each stage of the process may lead you to modify your hypothesis or experiment. 3.the sharing of ideas and expiremental findings with others through writing and speaking. that is what i got f...

**math**

How can you find the distance mike traveled in 9 hrs using the table

**chemistry**

Name the substances which decolourise bnromine water

**chemistry**

calculate the number of moles of sodium carbonate in one dm3

**physics**

i think that its still joules because the S.I unit of enrgy is joules.

**Chemistry - please help**

A substance was tested for Impurity A using liquid chromatography. 2 determinations were performed. In the 1st chromatogram, Impurity A was not detected, i.e. no Impurity A peak was observed and in the 2nd chromatogram, Impurity A peak was observed with a value of 0.3%. Is it ...

**CHemistry - help needed**

I performed a "related substances" test using HPLC on 1 sample. The 1st value for an impurity is 0% (not detected) and the 2nd value is 0.3%. THe passing limit is 4% for this test. Are the results acceptable, i.e. to take the average of the 2 values to give 0.15%?

**Physics**

Thank you so Very Much :))

**Physics**

What are the independent and dependent variables in the following scientific investigation? Controlled variables are also being used in this investigation. Identify the controlled variables as well. A chemistry student is conducting an experiment to determine if table salt wil...

**physics**

The circuit shown in the figure encloses an area of 25 cm2. The magnetic field increases steadily from 0 T to 0.50 T in 0.2 ms. What is the current in the resistor during this time? The circuit has a 9.0 v battery and a 20 ohm resistor

**think build live success**

Hello-this is Elizabeth Kemler..you seem to be referencing my program and I'm interested in how you came upon it and how you're using it. Please let me know.

**Chemistry**

how many mL of 2.0 M NaOH are required to get 100 g of NaOH?

**Chemistry**

how many mL of 2.0 M NaOH are required to get 100 g of NaOH?

**Finance**

1. A man establishes an annuity for retirement by depositing $50,000 into an account that pays 7.2% compounded monthly. Equal monthly withdrawals will be made each month for 5 years, at which time the account will have a zero balance. Each year taxes must be paid on the intere...

**math**

In 1995, the life expectancy of males in a certain country was 62.1 years. In 1999, it was 65.7 years. Let E represent the life expectancy in year t and let t represent the number of years since 1995. what is the linear function? Use the function to predict the life expectancy...

**chemistry**

a 500ml sample of oxygen gas at 24 degree celsius was prepared by decomposing a 3% aqueous soution of hydrogen peroxide in the presence of manganese catalyst by the reaction: 2h2o2 = 2 h20 + o2... the oxygen was colletec by displacement of water. the total pressure of gas coll...

**Chemistry**

a tank contains a mixture of 3.0 mol of nitrogen gas, 2.0 mol of oxygen gas and 1.0 of carbon dioxide gas at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure in torr of each gas in the mixture?

**microeconomics**

Sam Johnson started a small machine shop, Machines, Inc., in his garage and incorporated it in March of 2002 as a calendar-year corporation. At that time, he began using his personal computer and tools solely for the business as part of his contribution to the corporation. The...

**finance**

Entrepreneur Edward is planning to open a business selling ice cream. He knows that the price of ice cream is determined by the forces of supply and demand, but he wants a report outlining five specific events that can be expected to cause the equilibrium price of ice cream to...

**finance**

On June 26, 2004, Elaine purchased and placed into service a new computer system costing $8,000. The computer system was used 80 percent for business and 20 percent for personal use in both 2004 and 2005. Elaine claimed only regular MACRS depreciation. In 2006, the computer sy...

**finance**

On June 26, 2004, Elaine purchased and placed into service a new computer system costing $8,000. The computer system was used 80 percent for business and 20 percent for personal use in both 2004 and 2005. Elaine claimed only regular MACRS depreciation. In 2006, the computer sy...

**Chemistry**

How do you know which reactions are spontaneous? For example, the equation I2(s)+2NaF(aq)->F2(g)+2NaI(aq) is spontaneous. Why is this so?

**college chemistry**

why do halogens tend to form diatomic molecules?

**chemistry**

If 1500 blood cells were lined up, they would make a row 1.0 inch long. What is the average diameter of the blood cells in micrometer(If l inch = 2.54cm)?.

**maths**

how can i slove 5x-2(x-5)=15

**Physics**

How Fast would a satellite have to move to stay in an orbit 300 miles above the Earths surface?

** Literature**

What role does fate play in the events of Romeo and Juliet? How are the young lovers victims of misunderstandings, miscommunications,and plain bad luck? How do these elements affect the way readers and audience members are affected by their story?

**Maths**

AB II CD meet at E find out the angle E.

**physics**

.250 kg toy airplane is suspended from the ceiling in a conical pendulum. It flies with a radius of 10 cm, and has a period of 20 seconds. Find the centripetal force acting on the plane?

**ela**

shrimp

**ela**

wut do i like to eat?

**maths**

What is the gradient of a line that has an angle of inclination of 75°? Enter the answer, rounded to 4 significant figures in the box below. the answer should be a number. ???

**Com/155**

Did I pick the correct pronoun? I had to sit down with my sister the other day about her spending habits. Her being the pronoun.

**algebra 2**

can someone tell me how to expand the bionomial (d-2)^6?

**math**

A card is pulled from a well shuffled deck of standard playing cards and then put back in the deck. A second draw is made from the deck. What is the probability that an ace was drawn both times?

**math**

A bag contains 7 red checkers and 11 black checkers. One checker is drawn and replaced. Then a second checker is drawn. What is the probability that a red checker was drawn both times?

**math**

A card is pulled from a well shuffled deck of standard playing cards and then put back in the deck. A second draw is made from the deck. What is the probability that an ace was drawn both times?

**math**

Marcus flips a coin and tosses a six-sided die with the sides numbered 1-6. What is the probaility that he gets a head on the coin and a number divisible by 3 on the die?

**Physics**

A railroad car with a mass of 1.93 104 kg moving at 3.24 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.16 m/s. (a) What is the speed of the three joined cars after the collisi...

**Microeconomics**

Search: Consider two resource markets in which the demand curves slope downward. In market A, the supply curve is horizontal, equilibrium price is $6, and 100 units of the resource are hired. In market B, the supply curve is vertical, equilibrium price is $20, and 30 units of ...

**Physics**

A 74.5 kg ice skater moving to the right with a velocity of 2.62 m/s throws a 0.21 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...

**maths**

I THINK I GOT IT ITS NEGATIVE AS THE COEFFIENT IS -X^2 WHICH IS NEGATIVE. IS THIS RIGHT?

**maths**

the graph of y=-(x^2/3)=2x=24 is a parabola. 1) is the parabola u-shaped or n-shaped. how can you tell this from the equation?

**Character Buidling**

My Character Building Teacher had given me a project to write the names of the people we hate on a non-boiled raw potato, and put it inside a clear plastic, locked, and not to be opened until the project is finished. Everyday, we should take an observation of the potato and wr...

**physics**

An 85.4 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 22.4 m behind the ship, at rest relative to the spaceship. The only way to return to th...

**Physics**

Two billiard balls with identical masses and sliding in opposite directions have an elastic head-on collision. Before the collision, each ball has a speed of 20 cm/s. Find the speed of each billiard ball immediately after the collision.

**maths**

My kids are stuck on this they've no idea what to do and I can't help them out either! Darren throws a stone from the top of a vertical cliff into the sea below. The trajectory of the stone can be modelled by the quadratic equation y = -(x^2/3)+2x+24 where y represents...

**Character Buidling**

My Character Building Teacher had given me a project to write the names of the people we hate on a non-boiled raw potato, and put it inside a clear plastic, locked, and not to be opened until the project is finished. Everyday, we should take an observation of the potato and wr...

**math**

Manuel wants to calculate how many miles his farthers car travels on one gallon of gas. He knows that on a fu 15- gallon tank of gas, the car can travel 225 miles. Write an proportion that he could use to calculate the cars mileage per gallon(x)

**finance**

1–2 pages Details: Develop a personal financial planning budget. This budget can represent a budget for a fictitious individual; however, make sure you include the following: Information you would need to prepare this budget Income Taxes Expenses Personal expenses

**physics**

During peak shopping season at Northbrook Court, an escalator elevates 1233 passengers a vertical distance of 7.43 meters over the course of 30.3 minutes. If the average mass of the passengers is 55.3 kg, determine the power delivered by the escalator to the people.

**Physics**

A person doing a chin-up weighs 710 N, disregarding the weight of the arms. During the first 26.5 cm of the lift, each arm exerts an upward force of 356 N on the torso. If the upward movement starts from rest, what is the person's speed at this point?

**Physics**

A skier of mass 73.5 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 58 m up a 32° slope (assumed to be frictionless) at a constant speed of 2.0 m/s?

**law**

english law. what are the powers of the court of appeal.

**law-- **

discuss whether or not the changes to the selection of judges is leading to a wider cross section of people becoming judges. please help thanks

**English huckleberry finn**

The book ends with Huck saying he's going to "light out for the Territory ahead of the rest." But there's a part of me that wonders if he won't decide to go back home to the Widow's with his friends. * Write a short paragraph or two to make another &q...

**English**

Huck struggles to decide what he should do when his heart and his conscience pull him in different directions. He eventually decides to go with his heart. * Write a short essay explaining why you agree or disagree that this was a good strategy for Huck to pursue. * Look back t...

**world history**

Well, actually I think this was not present day.

**world history**

English and French are official languages of Canada. Laws promote French culture and language. Literature may be published in French and English. They made Quebec a separate country.

**world history**

Which is NOT a way in which the Canadian government attempted to cooperate with French separatists?

**World History**

In what regions did Latin Christendom expand during the period of the early Mongol expansion?

**maths**

A ball is launched into the air from below a cliff. after t seconds its height above the cliff top is h metres, and is given by the equation h = − 4.9t 2 + 19.6t − 14.6. Calculate, to the nearest metre, the max...

**A level law**

what are the disadvantages of the current system of training barristers and solicitors ( in england ) thank you

**A level law**

what are the disadvantages of the current system of training barristers and solicitors please help

**maths**

The following quadratic equation has the integer solutions x^2+5x-6=0 what is the positive solution of the equation

**maths**

Calculate the discriminant of the quadratic expression 4x^2-x-3

**Geometry**

The surface areas of two similar figures are given. The volume of the largwe figure is given. Find the volume of the smaller figure if the SA= 25 cm SA= 36cm and the V= 216cm?

**physics**

7.03m/s

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