Thursday

September 29, 2016
Total # Posts: 100,231

**Maths**

A cliff on the bank of a river is 250m high if the angle of depression of the point of the opposite side of the river is 50 degree,find the width of the river

*June 19, 2016*

**chemestry**

1. Determine the pH of a solution containing 1.00 mol/L of HCN (Ka = 5.00×10–10) and 5.00×10–2 mol/L of HCl.

*June 19, 2016*

**Math**

For the function f(x)=sinx, show with the formula sin^2A=1/2(1-cos2A) that f(x+y)-f(x)=cosxsiny-2sinxsin^2(1/2y)

*June 19, 2016*

**Marketing**

1. What forces in the marketing environment represent possible opportunities for Danone's Activia brand? What forces represent potential threats to the Activia brand? 2. How might a customer assess the value of activia yogurt? Be as specific as possible in your answer.

*June 19, 2016*

**physics**

the length of an aluminium bar of length 80cm increases by 1mm on heating.what is the final temperature of the bar if it was initially at temperature 20 degree celsius?(given:coefficient of linear expansion of aluminium=25×10^-6

*June 19, 2016*

**chemestry**

Please could anyone help me to give me solution of this problem: Calculate the pH of a solution obtained by mixing 50 mL of NH3 0.1 M (Kb = 1.8•10–5 mol/L) and 25 mL of HCl 0.2 M

*June 19, 2016*

**physic mechanic**

that means dv/dt = F/m - (b/m)v or (b/m) v + dv/dt = F/m let v = c (1-e^-kt) then dv/dt = cke^-kt and (b/m)c -(b/m)ce^-kt +cke^-kt = F/m when t --> oo, F = bc so c = F/b when t = 0, c k = F/m so Fk/b =F/m so k = b/m now v = (F/b)( 1-e^-(bt/m) ) a = dv/dt = (F/b)(b/m)e^-(bt/...

*June 19, 2016*

**physic mechanic**

F - bv = m a a = (F-bv)/m

*June 19, 2016*

**chemestry**

calculate the concentration of acetic acid in a 0.85 m sodium acetate solution,when ph=7,knowing that for the acetic acid,ka= 1.76 x 10-6.

*June 19, 2016*

**English**

Choose the correct form of the possessive for the underlined word in the following sentence: “A YEARS worth of hard work has finally paid off.” ( "years" is underlined) should it be: year years years' year's

*June 18, 2016*

**history**

The idea of the Mandate of Heaven was: A. introduced in the Bhaghavadgita. B. borrowed from Tibetan nomads in the fifth century B.C.E. C. introduced by the Zhou dynasty and it served to legitimize its power. D. contained in the Rites of Mao.

*June 18, 2016*

**geometry**

find the shaded area. round to the nearest tenth if necessary 15cm 21cm 12cm 27cm

*June 18, 2016*

**geometry **

find the shaded area. round to the nearest tenth if necessary 15cm 21cm 12cm 27cm

*June 18, 2016*

**science**

a particle is projected vertically upward from ground with velocity 10 m/s. Find which time particle reaches highest point?

*June 18, 2016*

**math**

Write the digit in the ten thousands place

*June 18, 2016*

**Math**

Janet bought 7 paperweights and altogether it weighed 1.4 so how much do one weigh

*June 18, 2016*

**Mathematics construction**

Construct triangle xyz such that x=z=45degree and xz=8cm

*June 18, 2016*

**Science physics**

Ddps

*June 18, 2016*

**Physics**

A period pulse travel a distance at 20m in 1•00sec,if it's frequency is 2•0×10.calculate the wave length

*June 18, 2016*

**Science**

ddps kaun se section m

*June 18, 2016*

**physical science**

An 85.0 kg man playing hockey catches a puck moving at 25.0 m/s. The man is initially at rest. The man and the puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity? A. 4.00 m/s B. 1.00 m/s C. 13.6 m/s D. 0.05 m/s

*June 17, 2016*

**physical science**

0.05

*June 17, 2016*

**science**

one ballon is in the freezer and other is at room temprature wht is the size of baloon in freezer

*June 17, 2016*

**statistics**

. What is inferred by the 95% confidence interval of the mean?

*June 17, 2016*

**math models**

A force of 19 newtons is applied on a cart of 2 kilograms, and it experiences a frictional force of 1.7 newtons. What is the acceleration of the cart

*June 17, 2016*

**Scienca**

A bullet leaves a rifle with a muzzle velocity of 521 m/s .while accelerating through the barrel of the rifle , the bullet moves a distance of 0.840m.determine the acceleration if the bullet. (Assume a uniform acceletlration).

*June 17, 2016*

**physics**

plz solved kre

*June 17, 2016*

**Calculus (check?)**

I got 7/5

*June 17, 2016*

**Calculus**

lim x-->0 ((7-3x^5+x^2sinx)/(5cosx))

*June 17, 2016*

**calculus (check please?)**

i have a=-2 and b=1

*June 17, 2016*

**calculus**

find the constants a and b so the function is continuous on a real line piecewise function: f(x)={5, if x<= -2; ax+b, if -2<x<3; -5, if x>=3 I know the limit x-->2- is 5 and limit x-->3+ is -5. I dont know how to find the constants

*June 17, 2016*

**math**

The schematic of a rectangular patio is drawn 1/8 inch to a 1 foot. If the patio is 15 feet long, what is the measure of the patio's length on the schematic?

*June 17, 2016*

**chemistry**

what is the mole of a solution that has 6 mole of Ca-Cl 2 in 3 kg of water?

*June 16, 2016*

**geometry**

The ratio of similarity of BOY to GRL is 1:2. If BOY x 3 and GR 3 x 1, then the length of GR is

*June 16, 2016*

**math**

One pump fills a tank two times as fast as another pump. If the pumps work together they fill the tank in 18 minutes. How long does it take each pump working alone to fill the tank? mat

*June 16, 2016*

**physics**

Find the total heat capacity of a 2.0 mol diamtomic ideal gas at constant pressure if the molecules can rotate and vibrate.

*June 16, 2016*

**Physics**

One method of estimating the temperature at the center of the sun is based on the Ideal Gas Law. Assume the center consists of gases whose average M = 0.70 kg/kmol, density= 91000 kg/m3 and pressure = 1.39 x1011 atm. Calculate the temperature (in kelvins) at the center of the ...

*June 16, 2016*

**physics**

A one mole sample of an ideal monatomic gas at 400 K undergoes an isovolumetric process acquring 550 J of energy by heat. Next it undergoes an isobaric process during which is loses the same amount of energy by heat. Find the work done on the gas. Assume three degrees of freedom.

*June 16, 2016*

**physics**

As an environmentally friendly idea, some have proposed using the temperature gradient of the ocean to generate electricity. This system would use the temperature gradient between the surface of the ocean (at about 200 C) and the water temperature at a depth of about 1 km (at ...

*June 16, 2016*

**Physics**

A multicylinder gasoline engine in an airplane, operating at 2500 rev/min, takes in 7800 J of energy and exhausts 4600 J for each revolution of its crankshaft. What is the mechanical power output of the engine in kilowatts.

*June 16, 2016*

**Physics**

200 degrees Celcius

*June 16, 2016*

**Physics**

On a beautiful baseball day with air temperature of 200 C, a pitcher throws a 0.142 kg baseball at 49 m/s towards home plate. As it travels 19.4 m, the ball slows down to a speed of 36 m/s because of air resistance. Calculate the change in the temperature of the air through ...

*June 16, 2016*

**Physics**

On a beautiful baseball day with air temperature of 200 C, a pitcher throws a 0.142 kg baseball at 51 m/s towards home plate. As it travels 19.4 m, the ball slows down to a speed of 36 m/s because of air resistance. Calculate the change in the temperature of the air through ...

*June 16, 2016*

**Physics**

A 20% efficient real engine is used to speed up a train from rest to 7.0 m/s. An ideal (Carnot) engine using the same cold and hot reservoir would accelerate the same train from rest to a speed of 8.0 m/s using the same amount of fuel. The cold reservoir is at 290 K. Find the ...

*June 16, 2016*

**Physics**

As an environmentally friendly idea, some have proposed using the temperature gradient of the ocean to generate electricity. This system would use the temperature gradient between the surface of the ocean (at about 200 C) and the water temperature at a depth of about 1 km (at ...

*June 16, 2016*

**geometry**

thank you !

*June 16, 2016*

**geometry**

A fish tank in the shape of a rectangular prism has dimensions of 14 inches, 16 inches, and 10 inches. The tank contains 1680 cubic inches of water. What percent of the fish tank is empty?

*June 16, 2016*

**math**

George saves 18% of his total gross weekly earnings from his 2 part-time jobs. He earns $6.25 per hour from one part-time job and $7.50 per hour from the other part-time job. George works a total of 40 hours between the two jobs each week. What additional information is needed...

*June 16, 2016*

**Chemistry**

How many ml of 8.00 M Na OH is required to neutralize 200 ml of 4.00 M HCl?

*June 16, 2016*

**Trigonometry**

A TREE STANDS ON HORIZONTAL GROUND. THE ANGLE OF ELEVATION OF THE TOP OF THE TREE FROM A POINT 50 m AWAY FROM THE BASE OF THE TREE IS 11.3°. CALCULATE THE HEIGHT OF THE TREE.

*June 16, 2016*

**Trigonometry**

AN AIRPLANE IS FLYING AT A HEIGHT OF 1000 m. THE ANGLE OF DEPRESSION OF AIRPORT A FROM THE PLANE IS 15°. CALCULATE THE HORIZONTAL DISTANCE BETWEEN THE AIRPLANE AND THE AIRPORT.

*June 16, 2016*

**Trigonometry**

A HOT AIR BALLOON IS 70 m ABOVE THE SEA. TWO BUOYS A AND B ARE DUE EAST OF THE BALLOON. THE ANGLE OF DEPRESSION FROM THE BALLOON TO BUOY A IS 60°. THE ANGLE OF DEPRESSION FROM THE BALLOON TO THE BUOY B IS 40°. CALCULATE DISTANCE AB.

*June 16, 2016*

**medical transcription**

she had moderately-severe pain in her shoulder is it properly punctuated t/f

*June 16, 2016*

**Maths**

r=3 use pythagoras to work out slant height (s) if h=8, ==> √(3^2+8^2)=s pretty much plug in these values into the formula for a,c,d. Curved surface area is pi*r*s, don't count the base.

*June 16, 2016*

**science**

A skier with a mass of 60.0 kg starts from rest and skis down an icy (frictionless) slope that has a length of 53.0 m at an angle of 25.4° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow becomes less icy, ...

*June 15, 2016*

**Math**

The formula A=l*w is in this formula ⏹=🔼*⏺ What other formulas in this form can you think of?

*June 15, 2016*

**Physics **

When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 9.00 cm long and 3.00 mm in diameter is compressed an average of 65.0 µm by a 0.490 kg hammer during a 1.20 ms collision. a) What is the average force exerted by the hammer on the ...

*June 15, 2016*

**Math**

339

*June 15, 2016*

**Math**

A rectangular prism has a base of 42 square inches. If the volume of the prism is 210 cubic inches, which could be dimensions of this prism

*June 15, 2016*

**science**

When you return to your house from school, what is your displacement

*June 15, 2016*

**science**

3×10^18 photons of a certain light radiation are found to produce 1.5 j of energy. calculate the wavelength of light radiation

*June 14, 2016*

**Physcis**

Consider the figure below where a cylinder of an ideal gas is closed by an 16 kg movable piston of area = 60 cm2. When the gas is heated from 30 0C to 100 0C the piston rises by 20 cm. The piston is then fastened in place and the gas is cooled back to its original temperature ...

*June 14, 2016*

**health care**

Meaningful use is using certified EHR technology to accomplish the following with one exception, Identify the exception from the following. Improve quality, safety, efficiency, and reduce disparities. Engage patients and their families in their health care. Improve population ...

*June 14, 2016*

**Physics**

Is the magnitude the same as the net charge for a?

*June 14, 2016*

**Physics**

The figure shows a cube whose sides are all 5cm long. Over the entire left-hand side of the cube is a uniform electric field E1=7500 N/C which is entering the cube at 20 degrees below the x axis. Over the right-handed side is a uniform electric field E2=4500 N/C which is ...

*June 14, 2016*

**Math**

just kidding

*June 14, 2016*

**Math**

You are dead

*June 14, 2016*

**Math**

AoPS? Ha.

*June 14, 2016*

**Physics**

Negative charge is distributed uniformly around three-quarters of a circle of radius, a, with the center of curvature at the origin. a) Use integration to find an algebraic expression for the x and y components of the net electric field at the origin in terms of the linear ...

*June 14, 2016*

**Algebra 1**

What is the coefficient of x in the quotient when x^3+4x^2-3x+8 is divided by x+2?

*June 14, 2016*

**math**

The sum of three consecutive odd numbers is 2583. What are the numbers?

*June 14, 2016*

**SCIENCE**

WHAT IS THE WORK OF MITOCHONDRIA

*June 14, 2016*

**physics**

A mass m 1 of 100 kg travelling with a uniform velocity of 5 m/s along a line collides with a stationary mass m 2 of 1000 kg. After the collision, both the masses travel together with the same velocity. The coefficient of restitution is:

*June 14, 2016*

**Math**

If your allowance was doubled everyday, how many days would it take for you to have over $1000(also tell how much you would have for that day added up?) How many days would it take for you to have over $10,000? (and how much for that day?)

*June 13, 2016*

**math**

If there are 150 people born in the world every minute; how many people are born every hour? Day?

*June 13, 2016*

**HEALTH CARE**

You have just assumed a position as HIM Director of a large HIM department in a different state, and you are faced with an overflowing paper file unit in the hospital. You need to determine how long various health records must be maintained. As part of your research, you would...

*June 13, 2016*

**HEALTH CARE**

Im going with facility baord

*June 13, 2016*

**HEALTH CARE**

When a record destruction program is considered by a healthcare facility, all the following are usually consulted EXCEPT The patient or legal representation. Facility board of directors. Facility attorney. Malpractice liability insurance carrier. HELP?

*June 13, 2016*

**Health data**

One advantage to storing health records is to contract with a commercial storage company for both storage, retrieval, and filing. True False False?

*June 13, 2016*

**math**

1/2 (2x+3y )+12/7 (3x -2y )=1/2 :7/(2x +3y )+4/(3x -2y )=2

*June 13, 2016*

**algebra**

write the equation in point slope form: (2,5) , m= -3/4

*June 13, 2016*

**algebra**

write the equation in point slope form: (2,5) , m= -3/4

*June 13, 2016*

**chemistry **

how is copper 2 sulphate formed from copper oxide and sulpheric acid and why is it formed?

*June 13, 2016*

**chemistry**

why is lead 2 iodide produced from the reaction of lead 2 nitrate and potassium iodide?

*June 13, 2016*

**Health**

all answers listed are correct

*June 13, 2016*

**Health**

Which of the following activities is supported by patient data? Evaluation of care Clinical education Financial viability All of the above

*June 13, 2016*

**Health**

it gives a list of 3 out of the 4 thats why It was hard to demonstrate

*June 13, 2016*

**Health**

Approach to data quality monitoring methods and solutions should consider: type of health facility data requirements level of technology available type of health care providers who are the major sources of documentation All answers provided are correct DATA REQUIREMENTS? ...

*June 13, 2016*

**Health Care**

The purpose of Minimum Data Sets (MDS) is to promote comparability and compatibility of data by using standard data items with uniform definitions, and these exist for: Ambulatory care (outpatient) Acute care Long-Term care Home care All answers provided are correct I believe ...

*June 13, 2016*

**English**

what is the answer?

*June 13, 2016*

**physics**

Sonia walks due east with a speed of two m/s. Bryan walks north with a speed of two m/s. Which statement best describes the relationship between their velocities? A. Their velocities are different because their speeds are not the same. B. Their velocities are the same because ...

*June 13, 2016*

**Calc**

lim x-->0+ (sqrt((1/x)+2)-sqrt(1/x))

*June 13, 2016*

**science**

A gas in a sealed container has a pressure of 50 kPa at 27°C. What will the pressure of the gas be if the temperature rises to 87°C?

*June 13, 2016*

**Physics**

7.0 kilograms of ice at 0 0C and are melted to water at 0 0C. Find the increase in internal energy of the ice as it is melted to water at 0 0C. Use 3.33x 105 J for Lf of ice. Express your answers in calories.

*June 13, 2016*

**Math**

The ratio of girls to boys is 7:8. the class has 30 students total. How many boys are there???!!! How do I do this ????!!!

*June 12, 2016*

**Calculus**

lim x--> 2+ (tan(pi/x))

*June 12, 2016*

**chrmistry**

calculate the molar concentration of 1ppm solution of NaCl?

*June 12, 2016*

**chemistry**

calcuate the normality of 0.2M solution of h3p04 ?

*June 12, 2016*

**math 9**

The number of boys is 3 more than double the girls. Together, there are 54 students in total. How many boys and girls are there?

*June 12, 2016*