Thursday

October 23, 2014

October 23, 2014

Total # Posts: 207

**physics**

A mass is thrown upward towards a vertical wall. If the release point is at a horizontal distance of 12 meters from the base of the wall, and the ball is launched at an angle of 60 degrees above the horizontal, with what speed need it be thrown so that it strikes the wall 10 ...
*September 21, 2014*

**math**

To find three numbers in geometric progression, knowing that their sum is 78 and the highest 30 units exceeds the sum of the first and second term.
*June 10, 2014*

**math**

Given the numbers 10 and 40 their averages are obtained by different procedures 16, 20 and 25 respectively. Say which is the arithmetic mean and what is the geometric mean
*June 10, 2014*

**math**

A cooling cost 1540 dollars. After four years he sold at half their value. If this is repeated every four years, the payment in the refrigerator the fifth person to buy it and after a few years this purchase was made.
*June 10, 2014*

**math**

Finding three geometrically numbers knowing that their sum is greater than 78 and 30 units exceeds the sum of the other two.
*June 10, 2014*

**Physics**

Calculate the escape velocity of a satellite launched from the earth surface if the radius of the earth is 6.4x10^6m
*May 15, 2014*

**physics**

It the specific gravity of mercury is 13.6 and the atmospheric pressure is 70cm of mercury, what is the total pressure of the gas supply in cm of water if the height of water is increase by 3cm?
*May 13, 2014*

**Finance**

What is the coupon rate of a two-year, $10,000 bond with semiannual coupons and a price of $9,543.45, if it has yield to maturity of 6.8%?
*March 29, 2014*

**Fiance**

What must be the price of a $10,000 bond with a 6.5% coupon rate, semi-annual coupons, and two years to maturity if it has a yield to maturity of 8% APR?
*March 29, 2014*

**Finance**

If $12,000 is invested in a certain business at the start of the year, the investor will receive $3,600 at the end of the next four years. What is the present value of this business opportunity if the interest rate is 7% per year?
*March 29, 2014*

**math**

The first term of an AP is 8. The ratio of d 11th term to the 7th term is 5:8 calculate the common difference
*March 19, 2014*

**Differential Equations**

A college professor contributes $5,000 per year into her retirement fund by making many small deposits throughout the year. The fund grows at a rate of 7% per year compounded continuously. After 30 years, she retires and begins withdrawing from her fund at a rate of $3,000 per...
*March 4, 2014*

**LIFE ORIENTATION**

Because they want student know about their career
*March 3, 2014*

**Science **

Acetylene gas c2h2 reaction cac2+2h2o. C2h2+Ca(oh)2 how many moles of cac2 needed to prepare 10.0 g c2h2 please show work and answer soon final question on big test review
*February 17, 2014*

**statistics**

Ten members of a fraternity take a statistics course. Here are their scores on the first exam in the course. 61,74,47,60,62,63,65,79,55,85. In all 135 students took the exam. The third quartile for all 135 scores was 69. How many students had scores higher than 69?
*December 9, 2013*

**Geometry **

What is the equation go the line that is parallel to the graph of y=1/2x+6, and who's y-intercept is -2
*November 21, 2013*

**maths**

13feet ladder is placed 5feet away from the wall . the distance from the ground straight up to the top of the mall is 13 feet. will the ladder touch the top of the mall?
*October 25, 2013*

**Quantum Physics**

thnx frnds, all of you :-)
*October 12, 2013*

**Quantum physics**

answer of q 2 is 3/(5*sqrt(2)) |00> (3*i)/(5*sqrt(2)) |01> 4/(5*sqrt(2)) |10> (4*i)/(5*sqrt(2)) |11>
*September 8, 2013*

**Quantum physics**

answer of q 3. is 3rd option
*September 8, 2013*

**FINANCE**

Exercise anwers
*June 9, 2013*

**Grade 12 LIFE ORIENTATION**

Cancer
*May 21, 2013*

**PHYSICE**

A uniform beam of length L whose mass is m, rest with its ends on two digital scales ( Figure 13.2). A block whose mass is M rests on the beam, its center is one-fourth away from the beam's left end. What do the scales read ?
*May 21, 2013*

**math**

PQ is a vertical tower 95m high, the points R and S are on the same horizontal plane as Q, the angle of elevation of P from R is 35 if QS =155m and Q from RQS=48 1.Calculate the distance of QR 2.Calculate the distance of RS 3.Calculate the are of QRS
*May 19, 2013*

**Social**

The Goal Every cult has a stated, vague and metaphorical goal. Because this goal must serve as the "illuminated eye" of the pyramid, it cannot be attainable. Rather, it is expressed as an abstract idea - like "salvation" - which the cult members will enjoy ...
*May 9, 2013*

**Math**

113.09733552923255658465516179806
*May 9, 2013*

**world civilization**

Chinese civilizations survived, intact, until the twentieth century
*May 9, 2013*

**Algebra**

you have the formula. Plug in 1000 for N and evaluate.
*May 9, 2013*

**Math**

9X12X14=1512
*May 9, 2013*

**Math**

X=3.2
*May 9, 2013*

**Grade 12 LIFE ORIENTATION**

Cancer
*April 23, 2013*

**Quantum Physics**

thnx, all of you for your help
*April 16, 2013*

**Math**

How do you get the big number on a runaway math puzzle worksheet
*April 5, 2013*

**south al**

For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode=_____ and (b) the standard deviation=_____.
*March 30, 2013*

**zoology**

4. In applying cladistic analysis to construct a phylogeny of the animal kingdom, why would the presence of flagella be a poor choice of a characteristic for the grouping the phyla into clades?
*March 25, 2013*

**LIFE ORIENTATION **

10 WAYS IN WHICH THE ENVIRONMENT HEALTH HAZARD CAN IMPACT NEGATIVELY ON ONE'S HEALTH
*March 19, 2013*

**reading **

Which of the following is an example of active reading? A. Skimming over information and taking notes. B. Reviewing a chapter, question as you read, and review notes. C. Speed reading and taking notes in your own words. D. Both B & C.
*February 28, 2013*

**physics**

I get 0.041meters. this answer does not seem plausible?
*January 24, 2013*

**physics**

A block with mass = 5.0 rests on a frictionless table and is attached by a horizontal spring ( = 130 ) to a wall. A second block, of mass = 1.35 , rests on top of . The coefficient of static friction between the two blocks is 0.40. What is the maximum possible amplitude of ...
*January 24, 2013*

**Physics**

Archimedes purportedly used his principle to verify that the king's crown was pure gold, by weighing the crown while it was submerged in water. Suppose the crown's actual weight was 14.0 N. The densities of gold, silver, and water are 19.3 g/cm^3, 10.5 g/cm^3, and 1.00...
*December 3, 2012*

**physics**

A child bounces a 54 g superball on the side- walk. The velocity change of the superball is from 23 m/s downward to 19 m/s upward. If the contact time with the sidewalk is 1 800 s, what is the magnitude of the average force exerted on the superball by the sidewalk?
*November 15, 2012*

**biology**

i need help with my genisis essay and it cant involve religion
*November 13, 2012*

**science**

a puppy runs a distance of 20m to its mother ina time 5s.what is the puppy's speed?
*October 5, 2012*

**Physics 2A**

A position vector has an x component of -2.5 m and a y component of 4.2. (a) What is the vector's magnitude and directions? b) suppose a spider took 10 minters to first walk -2.5m in the x direction and then 17 mintures 4.2 m in the y direction? Find the spider's ...
*September 9, 2012*

**English 1101 composition & rhetoric**

Put these sentences in order 1-6, based on whether it is the TS(1), GD1(2), SD1(3), GD2(4), SD2(5), CS(6), of a body paragraph in a five paragraph essay. A) Benson claims that the typical family eats together once a week now; a family having dinner together every night is no ...
*September 4, 2012*

**English 1101 composition & rhetoric**

Put these sentences in order 1-6, based on whether it is the TS(1), GD1(2), SD1(3), GD2(4), SD2(5), CS(6), of a body paragraph in a five paragraph essay. A) Benson claims that the typical family eats together once a week now; a family having dinner together every night is no ...
*September 3, 2012*

**math**

The number of dogs and chickens on a farm add up to 14. The number of legs between them is 36. How many dogs and how many chickens are on the farm if there are at least twice as many chickens as dogs
*August 30, 2012*

**Algebra2**

Help Solving This? 1. √x+4 = √x-1+1 2.2√n + 3 = n 5 Rational Exponet Equations: 1.3x^5/2 - 9 = 0 2.(2x+3)^1/4=4
*August 22, 2012*

**math**

its a pic of a train made of squares and the red train is made up of 6 red squares and the green train is made up of four green squares
*July 29, 2012*

**math**

Prime numbers
*July 29, 2012*

**basic science**

i do not no the anwer
*April 28, 2012*

**basic science**

if a force of 140 neaten is applied by a car over a distance of 10 metre within 10 second, calculate. (i) work done by the car. (ii) power of the car.
*April 28, 2012*

**Life orientation**

Alcoholism is a human factor that may cause ill health, accident, crises or disaster
*April 12, 2012*

**Statistics**

Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown below. Find the mean, variance, and standard deviation for this probability distribution. X 4 5 6 8 10 P (X) 0.4 0.3 0.1 0.15 0.05 What is the ...
*April 10, 2012*

**college math**

boat travels 160 miles downstream in the same time that it takes to go 96 upstream. the pead of the stream is 6 mph. what is the speed of still water
*March 9, 2012*

**math**

thank you, that helps me alot, good night.
*February 15, 2012*

**math**

sorry, my lap top is being stupid, no, i can use the calculator, but i need to show how i got my answer.
*February 15, 2012*

**math**

what is fraction or simpliest form of 38% and 35%
*February 15, 2012*

**math**

ok thank you both, 6 and 4/5 times 8 and 1/7 =
*February 15, 2012*

**math**

ok, now i am only in 6th grade, this math is really hard, i need 7/8 times 39. showing work.
*February 15, 2012*

**math**

it is 3 and 2/3 times 5 and 1/9
*February 15, 2012*

**math**

what is the estimated product of 3 2/3 x 5 1/9
*February 15, 2012*

**Astronomy 1010**

The ISS is being pulled by everything in the universe. Very little, but its being pulled. Because Gm1m2/r^2 And you can't divide something and get 0, you can only get close to 0.
*January 17, 2012*

**mth 209**

what formula do i use to figure our the usage (in million)of the drug claritin. From the year 2008-2011
*January 4, 2012*

**physical science posttest **

i need help because i have this posttest like a homework and i never take this class and I have to finish the posttest and i don't know what to do. Can you help me.?
*December 13, 2011*

**physics**

a plane is flying at 250 km hr an hit a 50 km hr headwind what is its resultantt speed relative to the ground
*December 11, 2011*

**math**

During each shift as a bus driver, Haley drives between 80 and 140 miles. She started the month with 4,500 miles driven. What is a reasonable estimate for the number of total miles she has driven the bus, after 20 more shifts?
*November 21, 2011*

**Chemistry**

Please help me out... The pressure of a container of fluorine gas with a volume of 1.5L is 678mmHg at 55.0*C. a. If the volume of the fluorine gas increases to 5.0L, what would be the pressure of the gas in atm? The amount and tempature of gas are consistant. b.How many grams ...
*November 19, 2011*

**mercy land**

the 2nd, 3rd, and 4th term of an arithemetic progression are x-2, 5 and x+2 respectively, calculate the value of x and hence find the 20th term..
*November 8, 2011*

**statistics**

4. A large company insists that all job applicants who are invited for an interview take a psychometric test. The results of these tests follow a normal distribution with a mean of 61% and a standard deviation of 7.2%. a) What proportion of applicants would be expected to ...
*November 5, 2011*

**statistics**

According to a bank, the time taken by its customers to use cash dispensing machines is normally distributed with a mean of 18 seconds and a standard deviation of 3 seconds. I) What is the probability that a customer selected at random takes less than 13 seconds? II) Find the ...
*November 5, 2011*

**English**

Directions: Revise the following sentences to eliminate unnecessary shifts in tense, mood, voice, or person and number and between direct and indirect discourse. Most of the items can e revised in more than one way. Examples: • When a person goes to college, you face many...
*November 4, 2011*

**English**

Revise the following sentences to eliminate unnecessary shifts in tense, mood, voice, or person and number and between direct and indirect discourse. Most of the items can e revised in more than one way. 1. The greed of the 1980s gave way to the occupational insecurity of the ...
*November 4, 2011*

**Spanish-Please recheck-SraJMcGin please check**

So I could say " Escalar montañas es el más divertido" or I could say "Escalar montañas es la divertida de las tres activades" Is that correct? Or I still confused?
*October 22, 2011*

**Spanish-SraJMcGin please check**

I had asked a question the other day but I'm not sure if I'm understanding this- it was a comparison-You said this as a comment: Spanish-8th grade - SraJMcGin, Thursday, October 20, 2011 at 4:02pm 3. also = de las tres actividades Also, #3 is different because it is ...
*October 22, 2011*

**Spanish-8th grade**

Thank you very much for explaining this-I appreciate it alot-I was pretty confused before
*October 20, 2011*

**Spanish-8th grade**

We're doing superlatives and we had to have three groups of sentences. Did I compare these correctly?I numbered each group as 1, 2 or 3, not each sentence in the group. 1.Tocar el piano es interesante. Tocar la guitarra es más interesante que tocar el piano. Tocar ...
*October 20, 2011*

**statistics**

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 121.2-cm and a standard deviation of 1.8-cm. Suppose a rod is chosen at random from all the rods produced by the company. There is a 23% probability that the rod is longer than...
*October 18, 2011*

**Physics**

lkjljlk
*September 29, 2011*

**help please:)**

Reading titles and headings, and trying to get an overview of what lies ahead in a reading passage is called:
*September 25, 2011*

**chemistry**

concentrated sulfuric acid has a density of 1.84 g/ml. calculate the mass in grams of 1.00 liter of this acid.
*September 22, 2011*

**chemistry**

what is the volume (in ml)of a liquid(density=2.07 g/ml)weighing 130.grams?
*September 22, 2011*

**Physics**

A cross country team race is about to begin and team Delta decides to use their one-dimensional kinematics knowledge that they learned from their first year physics course. Each team consists of two people and one horse. The clock is started when the team crosses the starting ...
*September 12, 2011*

**math**

is 10/6 + 65/6 + 120/6 + 175/6 + 230/6 equal to 100
*August 6, 2011*

**mathematics**

Find the equation of the parabola with the vertex at the origin and directrix y =5
*August 3, 2011*

**Cultural Antrhopology**

How does the identification of cultural universals impact our understanding of what it means to be human?
*August 2, 2011*

**physics**

You are given a vector in the xy plane that has a magnitude of 94.0 units and a y component of -44.0 units. A. What are the two possibilities for its component? For this part I got x = 83.1 and -83.1 B. Assuming the x component is known to be positive, specify the vector V ...
*July 21, 2011*

**physics**

Pelicans tuck their wings and free-fall straight down when diving for fish. Suppose a pelican starts its dive from a height of 15.0 m and cannot change its path once committed. If it takes a fish 0.25 s to perform evasive action, at what minimum height must it spot the pelican...
*July 18, 2011*

**physics**

An unmarked police car traveling a constant 90 km/h is passed by a speeder. Precisely 2.00 s after the speeder passes, the police officer steps on the accelerator. If the police car accelerates uniformly at 2.00 m/s^2 and overtakes the speeder after accelerating for 7.00 s, ...
*July 12, 2011*

**physics**

Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s: (a) for an acceleration a= -5.2m/s^2 (b) for a= -6.7m/s^2
*July 10, 2011*

**physics**

A space vehicle accelerates uniformly from 50m/s at t=0 to 182m/s at t=1 0.0s. How far did it move between t=2.0s and t=6.0s?
*July 10, 2011*

**Psychology**

What is one specific diagnosis for Anxiety Disorder?
*June 18, 2011*

**physics**

A faucet leaks at the rate of four drops each second.If air resistance is neglected, determine the vertical separation between two consecutive drops after the lower one has fallen 20m
*June 17, 2011*

**Math**

Find the unknown dimension width 5 1/2 ft 3 1/4 ft volume 143 ft3
*April 7, 2011*

**geometry**

an equilateral triangle of side 20cm is inscribed in a circle.calculate the distance of a side of the triangle from th centre of the circle.
*March 30, 2011*

**algebra**

3. You are going to plant trees in your hilly backyard. Tree A is located at coordinates (1,4) and Tree B is located at (5,12). What is the slope of the hill between the two trees?
*March 12, 2011*

**Math 10+**

Write an expression with an exponent that is equvalent to 1/8
*February 28, 2011*

**Math 10+**

Write an expression with an exponent that is equvalent to 1/8
*February 28, 2011*

**Math 10+**

Write an expression with an exponent that is equvalent to 1/8
*February 28, 2011*

**chemistry**

A 1L flask is filled with 1.000atm of H2 and 2.000atm of I2 at 448*C. The following equilibrium is established: H2(g)+I2(g)= 2HI(g). The value of K for this equilibri- um is 50.5. What are equilibrium partial pressures of H2,I2,and HI?
*February 10, 2011*