# Posts by anthony

Total # Posts: 1,019

**chemistry **

You have a tank of argon gas at 19.80 atm pressure at 19°C. The volume of argon in the tank is 50.0 L. What would be the volume (in liters) of this gas if you allowed it to expand to the pressure of the surrounding air (0.924 atm)? Assume the temperauter remains constant.

**chemistry **

You vaporize a liquid substance at 90.0 °C and 795.0 mmHg. The volume of 0.548 g of vapor is 237 mL. What is the molecular weight (in amu) of the substance?

**math**

what is 47.813 1n word form

**AP physics **

search "ap waves and sound free response questions answers" into google and click on the second one that pops up. answers are on the bottom of the page. question number 23 i don't understand why it is B.

**AP physics (simple experiment question)**

so it creates a beat. powder goes to 2 points on the bar and the points are called nodes.

**AP physics (simple experiment question)**

the 440Hz and the 441 Hz tone bars are to be placed horizontally on stable surface. strike both tone bars with the hammer. 10. what do you hear? report any pattern you hear to the sound generated. 11. when striking a single tone bar sprinkles some powder or sand into the bar ...

**Math- Ms. Sue? Steve? Writeacher?**

it just numbers the transitions. for example: slide the point A to the right. the coordinates would be labeled A. now reflect it. the new point would be labeled A'. now slide toe the right. new point is now labeled A''. and so on.

**math**

suppose that it takes 100 workers 6 weeks to build 4 miles of highway. how many miles of highway could 160 workers build in 15 weeks

**AP physics (multiple choice)**

e

**AP physics (multiple choice)**

an object is undergoing uniform circular motion. which of the following statements is true? a. the velocity is constant b. the acceleration is constant. c. the a is constant but v varies. d. the v is constant but the a varies. E. both a and v vary.

**AP physics **

1000 kg car is going clockwise around a curve iwth radius of 30m. coefficient of frction=0.5 if the road was banded at an angle what would happen to the speed required or the radius of the curve? explain.

**AP physics **

how do i find the Fnet of 3 planets? the 3 planets are also at angled distance from one another(2d).

**AP physics (answer whatever you can)**

how do you find the Fnet of 3 planets? do i find the forces of all the planets on each other and add it up? what if teh planets are at an angled position? 1000 kg car is going clockwise around a curve iwth radius of 30m. coefficient of frction=0.5 if the road was banded at an ...

**science**

Suppose an ideal car jack has an input work 2750 J. It lifts a car 0.35 meters in 8 seconds. a. What is the output work of the jack? b. How much power is required to lift the car? c. What is the efficiency of the jack? I can't give a answer because I am very confused.

**science**

Suppose an ideal car jack has an input work 2750 J. It lifts a car 0.35 meters in 8 seconds. a. What is the output work of the jack? b. How much power is required to lift the car? c. What is the efficiency of the jack?

**AP physics**

oh never mind she did give me the 2nd angle. it would be impossible without it i presume

**AP physics **

i am given strings at different angle connected to a sign that is at equilibrium. i am given the mass of the sign but only one of the angles of the string. how do i find the tension in each string?

**Physics Word Problem**

suppose a meteorite called head on with mars and becomes buried under mars surface. what would be the elasticity of this collision? explain your answer.

**physics**

A car travelling at 25 m/s slams its break leaving skids marks along a distance 125 m as it comes to rest. the coefficient f friction between the tire and the road is a 5 b 2.5 c 1 2 .4 e .25 A 500N worker pulling a 500 N crate on a rope with a force of 50 N at a constant ...

**PHYSICS**

What is the relationship between angle and gpe with a cart and a ramp. Also if it isn't linear find away to graph it in a linear fashion.

**Social studies**

its the political bosses because they used the poor immigrants by giving them rewards in exchange for votes.

**Science, please! help!**

1.D the rest idk

**physics (simple question)**

How does increasing the degree of a ramp change the an object's motion. the object is at the bottom and isn't going to go off the ramp. The object has an initial velocity.

**math**

Katie invested a total of ?$6000 ?, part at 3 ?% simple interest and part at 4 ?% simple interest. At the end of 1? year, the investments had earned ?$214 interest. How much was invested at each? rate?

**physics ap**

we'l find the time, t, for the ball to fall from the tabletop to the floor. use the equation ?y=vi?t+at^2/2. Take the vi to be zero and a to be 9.81 ±.02 m/s^2. you must first solve this equation for t. ?y=.922m what am i suppose to do with the acceleration because ...

**math**

a petri dish starts out with 500 bacteria. The amount of bacteria increases 25% each minute. Y=500(25)????

**physics**

ikr but my teach gave me the answers and it says 13.6m/s

**physics**

a brick is thrown upward from the top of a building at an angle of 25 degrees to the horizontal and with an initial speed of 15 m/s. what is the velocity of the brick at the max height? (the answer is 13.6 but I don't understand why or how to do it) (i thought it would be ...

**maths literacy**

A.24/9=2.6666667 cars per hour (24/9)x5=13.3333 cars in five hours. B. 2000=24/9(cars per hour)*T T=the amount of time. so 2000/24*9=T

**physics**

is the height of a ball be thrown directly related to the initial velocity? if i were to graph initial velocity as y and height as x,would it be a linear trend?

**physics**

TY very much Damon

**physics**

a brick is dropped form the roof of a building. On the way down it passes a 2m high window and is observed to pass from the top to the bottom of the window in 0.25s. (a) How fast was it moving when it passed the top of the window? (b)How far below the roof of the building is ...

**Physics**

conversion:26.39 m/s v=v(i)+at v has to be zero because she is going to stop. initial is 26.39 m/s 0=26.39 m/s+(-4.0)t solve for t and add then add 1 sec(reaction time).

**math**

the number of blocks has 9 in the ones place. the number in the hundreds place is one more than the number in the tens place. those two numbers equal 11. how many blocks are there?

**Linear Algebra**

Hello, could anyone help me with this excersise of linear algebra, Please? Well it's about linear transformation defined as T:V--W , the excersices give me a set of linearly independent vectors of V {v1,v2, v3... vk} and then asks : Are {W1, w2, w3, ...wk}, the linear ...

**Pre-calc Math**

A tree on a hillside casts a shadow c = 210 ft down the hill. If the angle of inclination of the hillside is b = 21° to the horizontal and the angle of elevation of the sun is a = 51°, find the height of the tree. (Round your answer to the nearest foot.) ________ft

**Pre-calc Math**

The path of a satellite orbiting the earth causes the satellite to pass directly over two tracking stations A and B, which are 95 mi apart. When the satellite is on one side of the two stations, the angles of elevation at A and B are measured to be 87.0° and 84.2°, ...

**Pre-calc Math**

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ?B1 is smaller than ?B2.) a = 78, b = 109, ?A = 24° Find : ?B1...

**Science**

It increases the populations because both species have more food supply which allows them to produce more and eat more. Put this into your own words BTW.

**Math (related rates) help?**

ohh ok this helped me too

**Thermo Dynamics**

Would like to see the following problem worked out. Having trouble solving. Explanation would be helpful. Given:Water at 20 Degrees C is filled to the top of a 15 m high, 15 m diameter tank. The tank is connected to a 15 m section of 5 cm diameter pipe which contains a fully ...

**math**

ben is a book that is 48 pages long.

**SS PLS HELP**

1. How are capital resources used in production? (1 point) They allow producers better access to world markets. They make it possible to employ more skilled laborers. They provide tools that make production more efficient. They purchase the raw materials needed for production...

**Math**

equivalent expressions that can be used to find the final price of an item costing g dollars that is on sale for 15% off and charged 7% sales tax.?

**Social Studies**

1. BCD

**Social Studies**

My answers are 1.B 2.C 3.D 4.C

**Social Studies**

1. What are the three types of productive resources? Select all that apply. (3 points) the raw materials provided by the planet the planning and work that go into production the markets that sell the results of production the social systems that ensure production is protected ...

**SS**

Is it 1. BCD 2. C 3. D 4. C

**Math**

At the same time a 5 foot person cast a 2 foot shadow, a nearby flagpole cast a 10 foot shadow. How tall is the flagpole?

**algebra**

The volume of a gas varies directly with its temperature and inversely with the pressure. If the volume of a certain gas is 20 cubic feet at a temperature of 350K and a pressure of 35 pounds per square inch, what is the volume of the same gas at 330 K when the pressure is 30 ...

**algebra**

The length a spring stretches is directly proportional to the force applied. If a force of 8 pounds stretches a spring 10 inches, how much force is necessary to stretch the same spring 9 inches?

**Math**

A fence around a square garden is madr up 4 equal-sized pieces that are each 5 1/2 feet long. Matt decided to make the sides 2 1/2 times longer. How much fencing does he need in all?

**Math**

Pedro spent 2 1/5 hours on his math himework and half as lomg on his science homework one weekend. If his english and social studies homework took 7/8 as long, how much time did he spent on homework that weekend?

**mathematics**

solve m2+6m+7 using completing the square method

**Math**

A rocket is launched at t=0 seconds. It's height, in feet, above sea-level, as a function of time, t, is given by h(t)=-16t2+64t+192 When does the rocket hit the ground after it is launched?

**Math**

A rocket is launched at t=0 seconds. Its height, in feet, above sea-level, as a function of time,t, is given by h(t)=-16t^2+112t+480 When does the rocket hit the ground after it is launched?

**english**

distinguish

**algebra**

For the following relation, give the domain and range, and indicate whether it is a function. {(1,2),(6,3),(3,1),(8,7)}

**algebra**

For the following relation, give the domain and range, and indicate whether it is a function. {(1,2),(6,3),(3,1),(8,7)}

**Math**

Hello everyone! I'm a 10th grader and I scored a 3331 on my math scantron performance series test.... is this good, average or bad? Thanks! -a

**math**

in a survey, 1000 people were asked what sports they liked best. of that number, 423 said baseball and 95 said tennis. what part of total number surveyed liked baseball? what part liked tennis?

**Algebra**

Root of 3x-6 = -4 3x-6 is all under a square root

**math**

use the terms factors,divisor,multiple, product and divisible by to write as many statements as you can about the number sentence. 7×9=63

**mathematics**

a public ferry travelled 220 km along with current of the wind it's travelled 63 km against the current 24 km/hr at the same time. find the current of the wind?

**Algebra**

You and 4 friends go out to eat you all split the bill equally each person's share was 6.50 how much was the original bill

**Chem**

A sealed balloon is filled with 1.00 L of helium at 23°C and 1.00 atm. The balloon rises to a point in the atmosphere where the pressure is 299 torr and the temperature is -31°C. What is the change in the volume of the balloon as it ascends from 1.00 atm to a pressure ...

**Chemistry**

A student dilutes a solution so that its pH changes from 2.4 to 4.4. 10mL of the original solution was diluted by how many mL?

**Income tax**

Catherine purchased furniture and fixtures (7-year property) for her shop for $80,000 in May 2013. What AMT depreciation adjustment is required in 2013? A. $0 B. $2,864 C. $8,568 D. $11,432 The answer is A?

**i-ready mastery check**

Sally has 3 white tennis balls and 4 orange tennis balls. Drag a ratio into each box to represent the relationship between the two quantities. Answer choices may be used more than once. Not all answer choices will be used.

**Math**

What are the numbers to the median of 38 and mode of 40 minimum of 9 and maximum of 85?

**Geometry**

A hill slopes down from a building with a grade of one for to five feet measured along the horizontal (slope of 1/5). If a ladder 36 ft. long is set against the building, with its foot 12ft. down the hill. How high will it reach the building?

**math**

(3 + 4) + 102 × (7 − 6) = how do i do this with the ()?

**math**

if they have () you do those first right like this problem (3 + 4) + 102 × (7 − 6 you would do 3 + 4 and then 102 or?

**math**

ok thank you guys this site is good

**math**

3 + 4 + 102 × 7 − 6 = how would i do this?

**Geometry**

Please help me with this: Using the definition, describe in words the translation of a triangle y f(x,y)=x-5,y+4)

**4th grade math**

Ellie and Heather drew floor models of their living rooms. Ellie's model represented 20 feet by 15 feet. Heather's model represented 18 feet by 18 feet. Whose floor model represents the greater area? How much greater?

**Geometry**

I meant to put S instead of A and I'm trying to find the perimeter of the parallelogram

**Geometry**

given the parallelogram of the perimeter RATU with vertices R(1,3) S(-2,-2) T(4,0) U(7,4):round to the nearest hundredth Rec1: Rec2: triangle 1: triangle 2: triangle 3: triangle 4:

**4th grade math**

long jump measurements. Allison jumped 3/8 foot shorter than the farthest jump. How far, in feet, did Allison jump? how to calculate long jump measurements

**Chemistry**

How many ions does 3 moles of zinc hydroxide have? I believe 1 mole of zinc hydroxide contains 3 ions so do I just multiply it by 3?

**4th grade math**

The school carnival is divided into sections. The dunk tanks are in 1/10 of the carnival. Games are in 4/10 of the carnival. Student exhibits are in 5/10 of the carnival. what fraction is dunk tanks and games

**4th grade math**

A shirt costs $15. A pair of sneakers costs four times as much. How much does the pair of sneakers cost? A hat is as much as the sneakers, so how much does the hat cost? If Ken buys one hat, one pair of sneakers, and two shirts, how much has he spent?

**microeconomics**

If a firm holds a pure monopoly in the market and is able to sell 5 units of output at $4.00 per unit and 6 units of output at $3,90 per unit, it will produce and sell the sixth unit if its marginal cost is 4.00 or less 3.40 or less 3.90 or less

**Physics**

I am asking and I know I can't but I don't no the answer to the question. So please answer.

**Physics**

A uniformed lath AB of length 80 cm and mass of 50g is pivoted at a point p,25 cm from one end it is kept horizontal by support at the other end by a vertical string. Calculate the tension in the string.

**Math**

A flower is 9 3/4 inches tall. In one week, it grew 1 1/8 inches. How tall its the flower at the end of the week? Write in simplest form.

**US History**

What role did the media play in the development of popular thinking related to the Spanish-American War? What is the correct role of news media in war time?

**math**

You and your sister work on the weekends at your parents’ store. You receive $4 per hour and your sister gets $5 per hour. On Saturday both of you worked a total of 7 h and together made $32. How much money did each of you earn on Saturday?

**Grde 12 math**

Angle D is 110 degree.Angle A and B has (5y+10).What is the value for y and the measures of angle C and angle A?

**chemistry**

If I wanted to make two solutions. In one I will mix Chemical A into 1 Liter of water. In the second I will mix Chemical B into 1 Liter of water. If I want my two solutions to be the same concentration they should contain the same number of PARTICLES. How can I make sure both ...

**messa secondary school**

If the last term of A.P is 40, what is the number of term.

**Algebra**

What are integer values for c in the following: 2 x^2 + 5 x + c = 0 What's the logic/method to get c with using a calculator, Excel,... I don't see how to uss outer/inner combo or AC grouping.

**Geometry**

Write a two-column proof. If point g is the centriod of triangle ABC and BG = 18. Find GE and BE. My work: ge is half so its 9. be equals 18 + 9 = 27 i need help on two column proof part

**math**

Help

**chem**

i have several problems i am caught on for my homework. I appreciate any help 1. As milk spoils, rancid components begin to coagulate. This could be interpreted as a: a.a colloid forming a suspension. b.solution forming a colloid. c.solution forming a suspension. d.suspension ...

**Math**

I don't get it!?

**Victoria Park**

Algebra: Measurement One of the equal sides of an isosceles triangle is 3 m less than twice its base. The perimeter is 44 m. Find the lengths of the sides.

**Geometry**

1x1

**TAX**

Patty and Rich, married filing jointly, have $385,000 in MAGI and $90,000 of net investment income(NII). they will pay a sutax of: A. $0 B. $1,710 C. $3,420 D. $5,130