Thursday

April 17, 2014

April 17, 2014

Total # Posts: 742

**Physics**

thank you very much ! i got it half the way but couldnt figure out how to finish it .

**Physics**

A steel ball hangs in a 147cm thread which is dragged right and then let go. Velocityh of the ball is 2,44m/s when it goes through the middle position. I dont have any mass given up. How many degrees to the side had the ball been dragged?

**Physics**

In a cyclotron (one type of particle accelerator), a deuteron (of mass 2.00 u) reaches a final speed of 10.1% of the speed of light while moving in a circular path of radius 0.540 m. What magnitude of magnetic force is required to maintain the deuteron in a circular path?

**math**

450 divide 14?

**Math**

Write the multiples of 7 through 70:

**6th Grade Math**

A drawer contains 3 blue ribbons, 4 red ribbons, and 3 green ribbons. A ribbon is randomly chosen from the drawer, replaced, and another ribbon is chosen. Find each probability"

**math**

Hoe do you do 450 divide14?

**Physics**

Ten cars at an intersection are blowing their horns simultaneously, creating a 98 decibel sound in the middle of the intersection. What is the average sound level for each car?

**Physics**

A train blows its horn as it approaches a crossing. The train engineer observes a frequency of 118 Hz and a stationary observer observes a frequency of 122 Hz. What is the speed of the train? Use the speed of sound as 340m/sec

**Physics**

If a piano tuner hears 3 beats each second when listening to a 8 Hz tuning fork and a single string on the piano which is of higher frequency.. What is the frequency of the single string from the piano?

**Finance**

Anderson International Limited is evaluating a project in Erewhon. The project will create the following cash flows: Year Cash Flow 0 –$690,000 1 243,000 2 175,000 3 256,000 4 231,000 All cash flows will occur in Erewhon and are expressed in dollars. In an attempt to imp...

**Finance**

Handy Enterprises has gathered projected cash flows for two projects. Year Project I Project J 0 –$215,000 –$215,000 1 104,000 75,000 2 93,000 86,000 3 79,000 96,000 4 72,000 105,000 Requirement 1: At what interest rate would the company be indifferent between the t...

**physical science**

Suppose you are camping in the mountains and you need to melt 1.8 kg of snow at 0.0 degC to 70.0 degC. The specific heat of water is 4186 j/kg*C while the latent heat of fusion for water equals 3.34 x 10^5 J/kg. How much heat will be needed? Express in KJ.

**Physics**

Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 7.6% and the body increases blood pressure to maintain a constant flow. Calculate the needed percent increase in pressure.

**Physics**

An artery supplying heat muscle with blood is occluded to 13.9% of its original radius by a clot. By what percent is the blood flow through this artery reduced.

**Physics**

Neglecting the pressure drop due to resistance, calculate the blood pressure in mmHg in an artery in the brain 32 cm above the heart. The pressure at the heart is 120mmHg and the density of blood is 1.05g/cm3.

**Physics**

A full term fetus may have a mass of 3.3 kg . If the entire weight of the fetus rests momentarily on the mother's bladder, supported on an area of 78.8 cm2 calculate the pressure exerted in mmHg.

**Phsyics**

Determine the absolute pressure at the bottom of a lake that is 66.1 m deep. Write your answer correct to two decimal paces let Patm = 101,300 Pa

**Physics**

A swimming pool has dimensions 26 m x 32 m and a flat bottom. When the pool is filled to a depth of 3 m with fresh water, what is the total force due to the water on the bottom?

**Physics**

A 71 kg girl dives off a raft 2.34 square meters floating in a freshwater lake. By how much does the raft rise in cm? Write your answer correct to two decimal places.

**FInance**

Most corporations pay quarterly dividends on their common stock rather than annual dividends. Barring any unusual circumstances during the year, the board raises, lowers, or maintains the current dividend once a year and then pays this dividend out in equal quarterly installm...

**Finance**

Sully Corp. currently has an EPS of $2.35, and the benchmark PE ratio for the company is 21. Earnings are expected to grow at 7 percent per year. Requirement 1: What is your estimate of the current stock price? (Do not round intermediate calculations. Stock price $ Requiremen...

**Finance**

The stock price of Webber Co. is $68. Investors require an 11 percent rate of return on similar stocks. Required: If the company plans to pay a dividend of $3.85 next year, what growth rate is expected for the company’s stock price?

**science**

A new moon is discovered orbiting Neptune with an orbital speed of 9.3 ´ 10 m/s. Neptune’s mass is 1.0 ´ 10 kg. What is the radius of the new moon’s orbit? What is the orbital period? Assume that the orbit is circular. (G = 6.673 ´ 10 N·m/kg)

**Physics**

Suppose that 6.68 kg of shaved ice is needed to keep medications cold in a room that has no refridgerator. What amount of heat (in calories) is needed to be removed from water at 0 degrees Celsius to make ice. Write your answer correct to two decimal places.

**physics**

Severe stresses can be produced in the joints by jogging on hard surfaces or with insufficiently padded shoes.If the downward velocity of the leg is 7.3m/s when the joggers foot hits the ground. If the leg stops in a distance of 1.1 cm. Calculate the force on the ankle joint. ...

**Math**

Tory has two similar picture frames in her bathroom the ratio of the larger picture frame to the smaller picture is 5:2 if the perimeter of the smaller picture is 30 in what is the perimeter of the bigger picture frame

**Physics**

The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state?

**science**

After experiment was done.

**science**

If the student opened the bag after the above experiment, what would happen to volume of gas inside? A. The volume of gas in the bag will stay the same. B. the volume of gas in the bag will be decrease. C. The volume of gas in the bag will be increase. D. the volume of gas in ...

**math**

Then describe what happens when you increase the number by 100.

**math**

Find the missing number: 7x6=15+15+? 6+6=?+5

**math**

find the missing number: 6+6= ? +5

**Physics**

6.8 x 10^2 N

**physics**

a man pulls an 80 kg sled up an incline that is at an angle of 25 degrees with the horizontal using a rope attached to the sled at an angle of 35 degrees. If the coefficient of friction between the sled and the incline is 0.70, what force must the man exert on the rope to keep...

**Engineering**

Guys, I would be glad if you post the answer for this questions. Thank you so much.!

**Algebra**

A man invested $15,000. Part of the investment was put into an account that gave 7%, and part in an account that paid 6.5%. The interest earned was 1,520. How much was invested into each account?

**math**

solve 6x^3-13x^2+x+2=0 using a graphing calculator. then use your answer to write the given function in factored form. (do not use the factor theorem to factor this.) (6 marks)

**Language art**

Can you also check these type of infinitive phrases? Thanks 1.To have a balanced diet, keep the food triangle in mind. noun 2. To get good food at that place is impossible.noun 3.Brenda went to that popular, crowded cafe simply to see her friends.adv 4.We listened to Rosalie&#...

**Language art**

Can you check these also? Thanks 1.To have a balanced diet, keep the food triangle in mind. noun 2. To get good food at that place is impossible.noun 3.Brenda went to that popular, crowded cafe simply to see her friends.adv 4.We listened to Rosalie's suggestion to disguise...

**Language art**

What type of infinitive phrases are shown below (noun, adverb or adjective) 1.George wants to take Lea out tonight. adv 2.Would you like to read this detective novel? adj 3. Fifty years ago,people didn't know to avoid "bad"cholesterol. adv 4.My grandmother taught...

**Language art**

What type of infinitive phrases are shown below (noun, adverb or adjective) 1.George wants to take Lea out tonight. 2.Would you like to read this detective novel? 3. Fifty years ago,people didn't know to avoid "bad"cholesterol. 4.My grandmother taught me to make ...

**Math**

Bacteria A has an initial population of 500 and doubles everyday. Bacteria B has an initial population of 50 and triples everyday. How long will it take the population of bacteria B to overtake the population of bacteria A

**math**

Felicia paid $125 to join tennis club. paid $5 every time she used the court write an equation that describes Felicia's total cost for playing tennis as a function of the number of times she plays. let c =the total cost and let n = the number of times she plays. Describe t...

**math**

write an equation that describes Felicia's total cost for playing tennis as a function of the number of times she plays. let c =the total cost and let n = the number of times she plays. Describe the domain and range of the function.

**Biology**

My guessing on these answers on these questions that im not sure of that i posted is, 1. d 2. b 3. a 4. a 5. c 6. a

**Biology**

In mitosis, if a cell has 4 chromosomes in prophase, how many chromosomes will this cell have in metaphase? a. 64 b. 32 c. 16 d. 8 e. 4 If a cell has 20 chromosomes in G1, how many chromatids will be present during prophase? a. 30 b. 20 c. 5 d. 40 Which of the following statem...

**Math**

The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random form the production lines. Would it be unusual for this sample of 800 to contain 386 jawbreakers that weigh more than .4 ounces?...

**physics**

An airplane has a mass of 32272.2 kg and takes off under the influence of a constant net force of 39990.0 N. What is the net force that acts on the plane's 78.5 kg pilot?

**physics**

Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 7.0 kg projectile from rest to a speed of 4.0 x 103 m/s. The net force accelerating the projectile is 4.9 x 105 N. How much tim...

**physics**

During takeoff, an airplane, climbs with a speed of 180 m/s at an angle of 34º above the horizontal. The sun is shining directly overhead. How fast is the shadow of the plane moving along the ground? (That is, what is the magnitude of the horizontal component of the plane...

**physics l**

A hill that has a 15 % grade is one that rises 15.0 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?

**physics**

Marks: 5 A hill that has a 15 % grade is one that rises 15.0 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?

**physics**

A 1523.7 kg car traveling with a speed of 20.8 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 53.5 m?

**physics**

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.6 m/s in 4.0 s. Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.0 s has elapsed?

**physics**

Two workers are trying to move a heavy crate. One pushes on the crate with a force A, which has a magnitude of 445 N and is directed due west. The other pushes with a force B, which has a magnitude 325 N and is directed due north. What is the direction that the workers push th...

**physics**

A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0º above the horizontal. The rocket is fired toward an 15.0 m high wall, which is located 27.0 m away. The rocket attains its launch speed in a negligibly short period of time, after which its e...

**physics**

A circus performer begins his act by walking out along a nearly horizontal high wire. He slips and falls to the safety net, 25.0 ft below. The magnitude of his displacement vector from beginning of the walk to the net is 26.7 ft. How far out along the high wire did he walk?

**physics**

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.0 m/s. The car is a distance d away. The bear is 26 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the maximum possible value for d?

**physics**

Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must survive being thrown...

**physics**

A fire hose ejects a stream of water at an angle of 35.0º above the horizontal. The water leaves the nozzle with a speed of 25.0 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the highest possible fire?

**math**

There are 159 counties in Mississippi, 60 of these counties have French names, what percentage is that?

**anology**

what is bongo

**physics**

A car travels in a straight line for 4h at a constant spped 73km/h. What is its acceleration? Answer in units m/s^2

**physics**

Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must survive being thrown...

**physics**

10) Horizontal beam supported on both ends - square profil 100 × 100 × 5, length is 800 mm.It is bent by the force in the middle of the beam by 0.2 mm. To achieve approximately half of the value of deflection,you will use the beam:

**science**

16) Which material is the most suitable for absorption of vibration? a) Steel b) Cast iron c) Aluminium d) Manganese Bronze e) Bronze

**physics**

10) Horizontal beam supported on both ends - square profil 100 × 100 × 5, length is 800 mm.It is bent by the force in the middle of the beam by 0.2 mm. To achieve approximately half of the value of deflection,you will use the beam:

**Physics/Formulas**

Calculate the SI units of the constants A and B in each of the following equations. Assume that the distance x is in meters (m), the time t is in seconds (s), and the velocity v is in meters per second (m/s). a. x = A + B.t Meters = A + B * seconds b. x = ¼ A.t2 Meters ...

**science**

16) Which material is the most suitable for absorption of vibration? a) Steel b) Cast iron c) Aluminium d) Manganese Bronze e) Bronze

**physics**

2) The weight of tank is 50 000 kg, area of his tracks is 5 m2. What pressure acts on the ground?

**physics**

10) Horizontal beam supported on both ends - square profil 100 × 100 × 5, length is 800 mm.It is bent by the force in the middle of the beam by 0.2 mm. To achieve approximately half of the value of deflection,you will use the beam:

**physics**

2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?

**physics**

) Horizontal beam supported on both ends - square profil 100 × 100 × 5, length is 800 mm.It is bent by the force in the middle of the beam by 0.2 mm. To achieve approximately half of the value of deflection,you will use the beam:

**physics**

10) Horizontal beam supported on both ends - square profil 100 × 100 × 5, length is 800 mm.It is bent by the force in the middle of the beam by 0.2 mm. To achieve approximately half of the value of deflection,you will use the beam:

**physics**

2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?

**physics**

2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?

**physics**

7) The train goes by speed 12 m/s on a horizontal track. Rain drops are falling vertically by speed 9 m/s. What is the velocity of the drops falling onthe train windows?

**physics**

6) The goalkeeper catches the ball flying by speed 30 m / s and stopped its movement in a period of 0.15 seconds . What force did he act on the ball, if we consider the stopping of the ball for constantly slow motion? Weight of the ball is 400 grams.

**Chem**

How do I Balance the equation. HC2H3O2(aq)+Ca(OH)2(aq)→H2O(l)+Ca(C2H3O2)2(aq)

**Trigonometry**

a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

**Trigonometry**

a flagpole 25 feet tall stands on a top of a building. from a point in the same horizontal plane with the base of the building. The angle of elevation of the top and the bottom are 61°30' and 56°20' respectively. How high is the building?

**math**

x^2+3x-10 divided by x-2

**vocabulary**

what is the same meaning of mar

**vocabulary**

what is the same meaning of hedge

**vocabulary**

same meaning hedge

**vocabulary**

same meaning hedge

**vocabulary**

same meaning gulp

**Mathematics **

A bicycle tire turns at 133.0 rpm and has a radius of 40.0 cm. The speed (v = r) of the bicycle is about

**Physics **

A system consisting of two fixed and two movable pulleys has a mechanical advantage of 4.00. If a force of 124 N is exerted, which weight can be raised?

**lifeorientation**

Discuss 10 ways in which the environmentAl health hazard can impact negatively on ones health

**science, psychology**

Exhibit a behaviour that you do every day that you think is influenced by heredity and environment. Describe how three of the seven modern perspectives/approaches of psychology would be used to explain your behavior. Make sure that your discussion is not too personal in nature...

**ANATOMY**

What is the functional advantage of the cat having so many muscles performing the same or very similar action? How does this relate to the human musculature? Can someone help me? please

**anatomy/urgent**

can someone help me please???

**anatomy/urgent **

What is the functional advantage of the cat having so many muscles performing the same or very similar action? How does this relate to the human musculature?

**science **

even in multicell organisms (ex: animals) events which occur in individual cell may have profound effects on their entire organism. Prove this with detail

**Biology **

even in multicell organisms (ex: animals) events which occur in individual cell may have profound effects on their entire organism. Prove this with detail

**Algebra**

Find an exponential function of the form f(x) = ba^x that has the given y-intercept and passes through the point P. y-intercept 4; P(2, 1)

**Chem**

Let me guess. Prof Ellis' assignment?

**grammar**

Good Morning Classmate, for this week’s assignment I read Chapter three. It talks about Plagiarism then I reviewed one of my research papers that I wrote in a previous course titled: Today’s Fire Department facing Economic Issues. It was hard to follow, the instructo...

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