# Posts by Ali

Total # Posts: 834

**Physics**

Find the longest wavelength by resonating air in 20 cm tube which is opened both ends

**Physics**

0.05

**Science**

The moon is about 384000 km the earth and its paths around earth is circular. The moon taken 24hr to complete one orbit. The speed at which the moon orbits the earth in km/ hour is

**Science**

The moon is about 384000 km the earth and its paths around earth is circular. The moon taken 24hr to complete one orbit. The speed at which the moon orbits the earth in km/ hour is

**chemistry**

the solubility of Mg(OH)2 at 25C is4.6x10^-3 g/100cm3? what is the solubility product of M g(OH)2?

**Math**

Find the volume of revolution when the region enclosed by the functions f(x)= e^x , g(x)=e^-x ,and the two lines is revolved about the x-axis Solution V=intergrate e^2x-e^-2x dx From -1to1 1/2e^+e^-2x when you sub and cal. =0 why please help me

**Chemistry-Dr.Bob222**

4007552

**Math**

The intensity of light passing through a lens can be found using the formula I=Io - Io / csc^2 theta, where Io is the intensity of the light coming in, I is the intensity of the light that emerges or goes out of the lens, and theta is the angle between. a) Find and simply and ...

**Technology**

you all are awesome i got a 100. thanks!

**math**

It would be A

**Math**

I got 500 miles for A)

**Math**

Carter left town A at 8 a.m driving toward town B at an average speed of 60 mph. At 8:30 a.m, Mihn headed from town B to town A along the same road. At 11 a.m, they met each other along the way and Carter realized that he had completed 80% of his journey. A) How far was Town A...

**math**

sally put red ,white,and blue handkerchiefs in a drawer. One-third of the hand kerchiefs were red ,one -fourth of the hamdkerchiefs were white and ten were blue. how many handkerchiefs of each color were there?

**science**

Ferrous sulfide is FeS, so each mole of ferrous sulfide requires 1 mole of iron; hence the answer is 2 gram-atoms of iron, i.e., about 112 grams of iron.

**Social Studies**

The Belief that the United States was set apart to extend its boundaries to the pacific was called A) America's Destiny B) Redezvous C) Manifest Destiny***** D) Joint Occupation Is C correct?

**simple interest**

A total of $12,000 is invested into two simple interest accounts. On one account the annual simple interest rate is 12%, while on the second account the annual interest rate is 18%. How much should be invested at 12% so that the interest earned is the same?

**simple interest**

An investment club invested a part of $14,000 in a 9% annual simple interest account and the remainder in a 15% annual simple interest account. The amount of interest earned for one year was $1800. How much was invested in the 9% account? my answer =2400

**simple interest**

my answer 3000

**simple interest**

A total of $8000 is deposited into two simple interest accounts. On one account, the annual interest rate is 10%, while on the second account the annual simple interest rate is 12%. How much should be invested in the 10% account so that the total annual interest earned is $900?

**finance**

Q.1.Differentiate future value from present value and explain how compound interest differs from simple interest. Q.2. John expects to need $50,000 as a down payment on a house in six years. How much does she need to invest today in an account paying 7.25 percent? Q.3. Richard...

**economic**

Erehwon is a country where the only products produced were A & B, over 3 years, 2013. 2014 & 2015. What was the Nominal GDP for 2013, 2014, & 2015? Using 2013 as your base year, what was the real GDP in 2014, & 2015? What was the GDP deflator for 2014? Year Qty of A Price of A...

**geometry**

if the isosceles trapezoid is dilatede with a factor 0.5,what is the area of dialation in square yards?

**Chemistry**

what is the concentration of each substance if a solution is prepared by mixing 5.00g of NaC2H3O2 with 15.0 ml of 1.45M acetic acid and then bringing the total volume to 250.0 ml?

**Chemistry**

Why are liquids that are refrigerated and stored in glass always colder than those refrigerated and stored in plastic or cardboard?

**Chemistry**

Why do warm temperatures speed up the fermentation of milk?

**maths**

a survey of 250 people showed that 220people favored a candidate for re-election what percent of the people surveyed favoured the candidate

**maths**

a quality control inspector found that 1.3percent of 1500 computer inspected were defective how many computer were defective

**physics**

Two rings of radius 3 cm are 23 cm apart and concentric with a common horizontal x-axis. What is the magnitude of the electric field midway between the rings if both rings carry a charge of +35 nC?

**Language arts**

The answer is C, I had the same question.

**LANGUAGE**

In the parliamentary form of government, the legislature chooses and controls the executive. legislature has no control over the executive. legislature has co-equal but separate powers with the executive. executive controls the legislature.

**LANGUAGE**

NEED HELP PLEASE The retricerian came down like the wolf on the fold, And his cohorts were gleaming in purple and gold; And the sheen of their spears was like stars on the sea, When the blue wave rolls nightly on deep Galilee. what is the rhyme scheme of the above lines A. ...

**english**

15. Martin had a parochial fear of travel, so it suprised everyone when he.....

**English**

Help!!!! I need a sample of English formal letter. immediate plzzzzz

**physics**

Help me to answer this!! What is meant by energy-mass relationship?w Explain with examples.

**math**

Solve this plxxx The numerator of a fraction is 2less than it's denominator.when both numerator and denominator are increased by 3,the fraction is increased by 3/20.find the original fraction.

**math**

I did get this explain plz... L=1680/w

**math**

Solve this plz The area of a rectangle is 1680msq.if it's diagonal is 58 m long find the length & width of the rectangle

**math**

Plz help me to solve this system of equation. 2^x+3^y=17 2^x+2+3^y+1=5

**math**

Plz help me to solve this system of equation. 2^x+3^y=17 2^x+2+3^y+1

**math**

Plz solve this problem.. A wire of 100 cm is cut into two parts and each part is bent to form square.if the sum of the areas of two squares is 425 cm square.find the length of side of two square.

**Math**

TO BE HONEST I DON'T REALLY KNOW SO I WAS WONDERING IF YOU GUYS HELP ME FIND THE ANSWER THANKYOU Ursula has fraction 1 over 2 cup of butter. She uses fraction 1 over 4 cup of butter to make a batch of brownies. Part A: How many batches of brownies can Ursula make with ...

**math**

Solve this problem plz... A rectangle has an area of 288 cm square.if the width is decreased by 1cm and length is increased by 1 cm the area would decreasedby 3 cm square.fin the original dimension of the rectangle.

**math**

Solve this problem plz... A shopkeeper buys some eggs at 15 cent each.6 of them are broken.while rest are sold at 20 cent each if he makes a profit of $4.8.find eggs he bought?

**Physics**

Plz plz answer this question..... "what is ment by the energy-mass relationship?explain it with the help of examples.....

**English**

I need a summary of book "eat that frog"I don't have any idea about that plzzzz help me.

**Math**

@Ms.Sue?

**Math**

A rectangular prism is completely packed with 180 cubes of edge length fraction 1 over 3 inch, without any gap or overlap. Which of the following describes the volume of this rectangular prism? 19 unit cubes and 9 smaller cubes of volume fraction 1 over 27 cubic inch each 19 ...

**math**

Tina uses a $50 gift certificate to buy a pair of pajamas for $17.97, a necklace for $25.49, and 3 pairs of socks that each cost the same amount. Tina has to pay $0.33 because the gift certificate does not cover the total cost of all the items. How much does each pair of socks...

**math**

A 6-pack of undershirts costs $13.98. This is $3.96 less than the cost of buying 6 individual shirts. If each undershirt costs the same amount, how much does each undershirt cost when purchased individually?

**ci**

What does it mean to be a good citizen? Be sure to include the three actions you listed in Step 2. What is the difference between a civic duty and a civic responsibility? Be sure to give an example for each to help explain. When have you experienced a civic duty or ...

**Math**

i think it's Conversion factor is actually a ratio between two measurements so they basically are the same am i right?

**Math**

How is using a conversion factor different than using proportions to convert measurement units? Explain which is easier and why.

**Math**

there are more questions is there anyway you can tag people in it?

**Math**

and you can divide it 5 times

**Math**

thank you, Damon but is there any way i can get it in a way that is more advanced?

**Math**

1. Is it possible for a composite number to have more than one prime factorization? 2. Is it possible for a number to have no prime factors? Why? 3. Give an example of how prime factorization could be used in the real world

**civics**

i say A or B

**civics**

according to the united states constitution, which action would be the most appropriate for state government A. printing a newly- designed twenty dollar bill B. establishing a new post office growing community C. establishing a waiting period for a marriage license D. ...

**civics**

my other choice was C?

**civics**

which of the following is true about most state constitutions A. Delegated powers are thoroughly described in most state constitutions** B. most state constitutions are longer than the U.S. constitutions C. the constitution describes the federal government more than most state...

**civics**

thankyou Ms. Sue

**civics**

Jennifer notices there are branches that overhang the roads near her house. when trucks drive by, they hot the branches. she feels that this is a danger to drivers. Her city, however, has a policy of preserving the appearance of canopy roads, or roads shaded by tree canopies. ...

**Chemistry**

Which molecule would be more soluble in water ? H----C=C---H or BeCl2

**frasher**

tought cought lengh don't know start with scr spr thr

**Algebra**

James and Kristin each improved their yards by planting daylilies and geraniums. They bought their supplies from the same store. james spent $120 on 8 daylilies and 12 geraniums. kristen spent $61 on 5 daylilies and 4 geraniums. Find the cost of one daylily and the cost of one...

**Math**

d a

**Algebra**

Flying with the wind a plane went 162 mph. Flying into the same wind the plane only went 82mph. Find the speed of the plane in still air and the speed of the wind.

**chemistry**

0.5g of an organic compound x (containing carbon hydrogen oxygen) produces 0.733g of carbondioxide and 0.3g of water on complete combustion.the max spectrum shows mr=60.determine molecular formula of x

**statistics**

Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test (grades >= 60) (...

**statistics(business)**

Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test (grades >= 60) (...

**physics**

A uniform solid cylinder of mass 1kg roll with out slipping on aflat surface at aspeed of 4m/s. What is the total kinetic energy of the cylinder?

**chemistry**

Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2*9H2O

**Trigonmetry**

4 cos 2x + 3 sin 2x = 2

**Art**

The picture is an art piece called "Sketchbook 7" by Vivian W.

**math**

Order fractions from greatest to least. 7/8, 8/9, 9/10,10/11

**physics**

from circuit R1 6680 ohm R2 680 ohm R3 330 ohm R4 180 ohm find the total resistance

**math**

A ladder of length 10 m rests with its lower end on a horizontal floor and with a rate of 2m/sec when the lower end is at 8m away from the wall, find: the rate of change of the angle between the ladder and the floor

**physics**

a 2.00 * 10^5 kg lunar landing craft is about to touch down on the surface of the moon

**Physics**

A 60 kg is pushed 12m across a horizontal floor by a horizontal force of 200N. The coefficient of kinetic friction is 0.3. How much work went into overcoming friction and how much work went into accelerating the box.

**Math**

YoU order 6 pizza & you eat 2/3 of one pizza before your guest arrived. Each one of your guest eat 1/4 of pizza & left with 5/6 of pizza. How many guest did you invited?

**Physics**

Two blocks connected by a rope of negligible mass are being dragged by a horizontal force F (Fig. P5.45). Suppose that F = 75.0 N, m1 = 14.0 kg, m2 = 19.0 kg, and the coefficient of kinetic friction between each block and the surface is 0.098. a)Determine the tension T. b)...

**Maths area**

Mr dodson wants to fence an area that is 8 feet by 10 feet how muchfence will he need

**college chemistry**

From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go ...

**college chemistry**

From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go ...

**math**

Peter is three years older than his sister paula. If their combined age is 21 find their actual ages. x+3=21 X+3-3=21-3 X=18 Answer=18 and 3

**Math**

485

**Chemistry**

if a cooler has 63 kg of ice how much energy is required to melt it at 0 degrees celcius? The heat fusion for water is 80 cal/gram

**Physics**

t a NASA research center free-fall research is performed by dropping experiment packages from the top of an evacuated shaft 156 m high. Free-fall imitates the so-called microgravity environment of a satellite in orbit. What constant acceleration would be required to stop an ...

**6th grade math**

When you are turning a decimal number into a mixed number the numbers to the left of the decimal will become the whole number and the numbers to the right of the decimal will become the fraction. for example: 5.815 + 6.021 = 11.836 11.836 is in decimal form 11.836 as a mixed ...

**math-Urgent help please.**

A diver's elevation is -30 feet relative to sea level. She dives down 12 feet. What is her elevation after the dive?

**Math**

1. It can be a decimal or a fraction, because decimals and fractions are NOT whole numbers. for example: -6 , 37 , 100 are integers 54.7845379 , 3/8 , 2.9 are not integers Hopes this helps you !!! :)

**art**

the answer is B) Creative. :)

**Calculus**

The region in the first quadrant bounded by the x-axis, the line x = ln(π), and the curve y = sin(ex) is rotated about the x-axis. What is the volume of the generated solid? Got 2.8 and .79 very confused

**Physics**

A convex mirror (f1 = −6.30 cm) and a concave mirror (f2 = 9.50 cm) are facing each other and are separated by a distance of 24.0 cm. An object is placed between the mirrors and is 12 cm from each mirror. Consider the light from the object that reflects first from the ...

**Physics**

A lighted candle is placed 38 cm in front of a diverging lens. The light passes through the diverging lens and on to a converging lens of focal length 10 cm that is 5 cm from the diverging lens. The final image is real, inverted, and 19 cm beyond the converging lens. Find the ...

**Calculus**

that is all the information given

**Calculus**

The base of a solid in the first quadrant of the xy plane is a right triangle bounded by the coordinate axes and the line x + y = 2. Cross sections of the solid perpendicular to the base are squares. What is the volume, in cubic units, of the solid?

**Physics**

A projectile is fired straight up from the top of a 190m cliff with a speed of 170m/s . What will be its speed just before it strikes the ground below? (Use conservation of energy and neglect air resistance.)

**englisg**

the committee consisted of a businessman, a lawyer and lady doctor