# Posts by jon

Total # Posts: 1,374

**Nuclear Physics**

Radioactive Carbon 14 (atomic number 6) is produced in the atmosphere when a neutron is absorbed by Nitrogen 14 (atomic number 7). Write the reaction and write its Q-value.

**Math**

Arrange from lowest to highest. 3(6/30), 0.5, 6/13, 1/4 Please explain how :'(

**math**

Im stuck on the same question. Studying for the asvab. they set it up to 21C3/26C3 and apparently that equals 54,264/65,780 which equals 0.82 which turns into 82% which is the answer. But how in the world they did the work, im trying to figure that out.I tried using the ...

**math**

82%

**math**

At first, a price was decreased by 12%, then it was discounted again by an additional 5%. What is the total percent of the discount?

**Physics**

A car is traveling with a kinetic energy if 2200 J. If a braking force of 1100 N is applied to the car, how far will the car travel before it stops?

**Physics**

A car is traveling with a kinetic energy if 2200 J. If a braking force of 1100 N is applied to the car, how far will the car travel before it stops?

**math**

Robert spins the spinner and rolls a standard number cube. Find the probability that the spinner will stop on purple and the cube will show a six. The spinner has six equal slices, 1 purple, 3 green, 1 yellow, 1 red.

**Math**

A man goes 7m east and then 24m to south. Find his distance from the starting point

**math! Quantitative methods!**

1.In assigning machines to factory orders. 2.In Assigning Sales/Marketing people to sales territories. 3.In Assigning contracts to bidders to systematic bid evaluation. 4.In Assigning teachers to classes. 5.In Assigning Accountants to accounts of the clients.

**math! Quantitative methods!**

Discuss 5 application areas of assignment methods of Linear programming.

**thomas middle such**

what is the three digit mystery number? if it is less than 300. the tens digit is 5 more than the hundreds digit. the sum if the digits is 11. the hundreds digit is 3 less than the ones digit. the mystery number is

**Maths**

Two identical jars are filled with mixtures of water and vinegar in the ratios of 2 to 1 and 3 to 1 respectively. If both jars are emptied into another container then the ratio of water to vinegar in the resulting mixture is.

**Algebra**

Billy weighs 50lbs less then his brother together they weigh 210lbs what is the equation to figure out how much billy weighs

**English**

Roses and hydrangeas—which require more rainfall—do well in East Texas.

**math**

How many $1 bills are the same as__________$10 bills?________-

**GEOMETRY**

IF RAYAC BISECTS ANGLE DAB,AND ANGLE DAC =58,WHAT IS MOF ANGLE DAB?

**math**

In the SmallState Lottery, three white balls are drawn (at random) from twenty balls numbered 1 through 20, and a blue SuperBall is drawn (at random) from ten balls numbered 21 through 30. When you buy a ticket, you select three numbers from 1-20 and one number from 21-30. To ...

**math**

What number, whose sum of its digits is 26,becomes 6000 when rounded to the nearest thousands? list 3 possible answers.

**algebra**

b

**Trig**

find the equation for the cosine function that has an amplitude of 3/5, a period of 3pi/2 and a y-intercept of 5.

**Science**

A 2 kg mass is hanging from a spring with a constant of 1500 N/m. The mass is pulled down a distance of 0.3 m and then released. If the specific heat capacity of the spring is 0.35 J/gK, the spring has a mass of 10 g and the initial temperature of the spring is 20 degrees ...

**US History**

You are correct with B, Brooke. Good job.

**Physics**

45

**algebra 2**

I see thanks for the help but what is the final equation? I had 1/2x^3-x.5x^2-9x+20

**algebra 2**

Question: Write the equation of a cubic function that has the x-intercepts of -4, 2, and 5 and passes through the point (6,20) My Answer: y = .5x^3-1.5x^2-9x+20 What I did: Put the x-intercepts and given point into stat plot (on calculator) then hit stat -> calc -> cubic...

**Chemistry**

0.0229 M

**Physics**

A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The specific heat of water is ...

**math**

A container was 1/2 filled when 200 ml of water was poured out it became 1/3 full find the capacity of the container in millimeters

**Math**

Don's pays his jimmy 2.00 per hour for the first hour. He plans to pay him double for the next six hours. How much would he earn at the end of six hours?

**accounting**

wat is the similarity between traditional costing and activity based costing?

**calculus**

A wire along 1 meter is divided into three parts . The first part is formed into a circle , the second part is formed into an equilateral triangle , and the third part is formed into a square . Determine the size of each section so that the total area of the three wake formed ...

**Physics**

Salt water is poured into a U tube until it stands 0.250 m high in each arm. Oil is then added slowly to one arm until the salt water in the other arm stands 0.300 m high. The free surface of the oil then stands at 0.321 m high. (the weight density of the salt water is 10,100N...

**Mays**

A Java book is comprised of two sections core and advanced Java in the ratio 7:3. How much of each type of content will be needed to make a book of 450 pages?

**Therrell**

When measuring distance 12 beads are Approxmately equal to 6 erasers. How many erasers are equal to 18 beads? How many beads equal to 42 erasers?

**Mays high school**

Mr. Jeff divided his money in the ratio 4:2 between Jon and jack. Jon got the smaller amount of 1,256. How much did jack receive?

**Honors Chemistry**

Predict Products and write balanced equation FeBr3 + 3Ba(0H)2

**Trigonomtry**

21

**Math**

bur

**Kennedy**

There are 28 classes at an elementary school. The school cafeteria needs 22 cartons of milk per class each day. Milk costs 25 cents per carton. How many cartons of milk does the manager need to order each day?

**Math**

How many numbers can be formed by multiplying some or all of the numbers 2,3,4,5,6,7,8? The answer is 48 but I don't know how to get there?

**science**

magma is a mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth, and is expected to exist on other terrestrial planets. lava is the molten rock expelled by a volcano during an eruption and the resulting rock after ...

**english**

thank you reed. yes, i read the link you posted.

**english**

You want to determine how many rainfall will fall in a certain time period. You collect rain as they fall from the sky onto a piece of bucket with an area of t square meters. If you want to determine the rainfall count as accurate as possible, you should ideally: a. collect ...

**english**

You want to determine how many rainfall will fall in a certain time period. You collect rain as they fall from the sky onto a piece of bucket with an area of t square meters. If you want to determine the rainfall count as accurate as possible, you should ideally: a. collect ...

**Physics**

A certain car is capable of accelerating at a uniform rate of 0.83 m/s2 . What is the magnitude of the car’s displacement as it accelerates uniformly from a speed of 80 km/h to one of 92 km/h? Answer in units of m.

**Science**

If the specific heat of a marshmallow is 2 J/g, how much heat is given off when it cools from room temp (25C) to its liquid nitrogen bath. Weight of the marshmallow 7.4g

**Math**

What number whose sum of its digits is 26, becomes 6000, when rounded to the nearest thousand? list 3 possible asnswer

**Math**

A number rounds off 4000 the digit in the hundred places is twice the digit in the tens place. The sum of the digit is 12 . the number uses only two different digits .find the number

**math conversion**

convert from Chinese into American standard measurement; 1800 24Kg. Please,

**Carmel**

A memory card is one quarter full when 375 more pictures are taken it'll be two thirds full how many pictures can the memory card hold and how many pictures are on it?

**statistics**

4950

**physics**

If a small planet were discovered whose orbital period was twice that of Earth, how many times farther from the Sun would this planet be?

**Calc**

621000

**algebra**

15

**World History**

What were social, political and economic causes of WWI?

**Science**

What is the momentum of a 2 kg rock moving at 3m/s?

**Science**

Describe the difference between the momentum between a tennis ball and a wrecking ball that is thrown at the same speed.

**Math**

Thank you for all your help (-:

**Math**

How do I solve this problem? 6C3 A. 120 B. 720 C. 20 D. 240 Is it 6*5*4*3*2*1

**physics**

An object is released from rest at an unknown height h above the ground. One second later a second object is released from rest at the same height. When the first object strikes the ground, the second is 20 m above the ground. What is the initial height h?

**Math**

A painter bought some paint for $500. He paid $x for each litre of paint. He accidentally spilt 5 liters of paint and sold the remainder of the psint for $2/litre more than he paid for it. If he made a profit of $40, find the amount he paid for each litre of paint.

**FINANCE**

Below is a list of account balances for Currie Hospital as of December 31, 2013. Prepare a balance sheet as of December 31, 2013, in proper form. (Hint: You will need to compute the net assets account. Assume that all net assets at the beginning of the year are unrestricted...

**organic chem**

nevermind I got it :)

**organic chem**

does 2,3 hexanediol have 2 stereocenters? I just wanna check that before i attempt to draw isomers

**Chem NMR**

this one is dealing with H NMR... The compound is N,N-dimethylacetamide. Why would there be 2 distinct peaks from the 2 Methyl groups attached to the Nitrogen atom? This would suggest they are in different environments, why?

**CHEM NMR**

this one is dealing with H NMR... The compound is N,N-dimethylacetamide. Why would there be 2 distinct peaks from the 2 Methyl groups attached to the Nitrogen atom? This would suggest they are in different environments, why?

**Accounting**

The GoodTaste Club collected recipes from members and published a cookbook entitled Eat 'Em Up. The book will sell for $18 per copy. The chairwoman of the cookbook development committee estimated that the club needed to sell 14,600 books to break even on its $87,600 ...

**chemistry**

1. You are given a mixture containing two compounds, A and B. Both compounds have a solubility of 1 g/ 100 mL of solvent at 20 °C and 16 g/ 100 mL of solvent at 100 °C. The sample is composed of 3.5 g of A and 10 g of B. At 100 °C the entire sample just dissolves ...

**social studies**

I have no idea just trying to help

**social studies**

what is the greatest challenge facing people in turkey as a result of its diversity? 1. Turks must protect their status as the largest ethnic group 2. Turks must encourage other to follow Turkish traditions 3. Kurds must struggle to keep their cultures alive 4. Kurds must ...

**social studies**

I have no idea just trying to help my nephew

**art**

an artist loved to work with smooth, flowing paint that has vibrant color. Know she has many months to finish a commission. Her best choice for a material would be: 1. tempera paint 2. oil paint 3. acrylic paint 4. watercolor'

**Physics**

A store sign of mass 4.57 kg is hung by two wires that each make an angle of θ = 40.7° with the ceiling.

**social studies**

How do people make up for water scarcity in the dry parts of Israel? 1. by building dams 2. by trading in oil 3. by using irrigation pipelines 4. by importing fresh water

**math**

A rock is thrown up in the air at 30 ft/second. It has height in feet given by H(t) = −16t 2 + 30t. When does the rock have a velocity equal 10 ft. per a second?

**Math**

Write in simplest form 4/7 divided by 5/8

**chemistry**

Please help what is the molecule CH3CH2CHCHCH3

**PHYSICS**

A 1250 KG wrecking ball is lifted to a height of 12.7 m above its resting point . When the wrecking ball is released, its swings toward an abandoned building and makes an indentation of 43.7 cm in the wall. A) What is the potential energy of the wrecking ball at a height of 12...

**Chemistry**

As a purity check for industrial diamonds, a 22 - carat diamond (1 carat = 0.2g) is heated to 63 degrees C and immersed in 26g of water in a constant pressure calorimeter. The initial temperature of the water is 23 degrees C. Calculate the ΔT of the water and of the ...

**Chemistry**

2C2H2(g) + 3O2(g) 4CO(g) + 2H2O(g) What is delta G° for this reaction in J/mol? (T = 298.17 K)

**Chemistry**

Calculate the heat transferred when a 23 g of iron nail is cooled from 67oC to 20oC. The specific heat of iron is 0.45 J/goC.

**Chemistry**

A skillet made of Iron (Fe) weighing 1.8 kg is heated on a stove to a temperature of 202 degrees C. If the skillet is removed from the stove and allowed to cool to room temperature (21 degrees C), how much heat must be removed from the skillet. The specific heat of Iron is 0....

**Chemistry**

A current of 4.00 A is passed through a solution of AgNO3 for 1.00 hr. What mass of silver is deposited at the cathode? (In grams) Use Faraday's constant F = 9.65x10^4 C/mol

**Chemistry**

How long (in seconds) does it take to deposit 1.065e+001 g Zn on a steel gate when 2.375e+001 A are passed through a ZnSO4 solution?

**number line**

If

**Physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 18.0 m. Next, the student stands at the edge of the pool and uses a ...

**Science**

Assume that you have 15ml of 2.5M potassium hydroxide but only have concentrated bottle of 16M strength. How would you obtain this

**math**

54/3

**Science Help!**

Is it triple or double

**Physics**

-1

**algebra**

a train travels 600 miles from Los Angles to San Francisco traveling at a certain speed the return trip is made traveling 40 mph faster the return time is 4 less how fast was the train traveling in each direction?

**Calculus**

Solve the following e^-x (square root((3e^2x) - 5/4)) = e^x

**physics**

A football is kicked off with an initial speed of 65 ft/s at a projection angle of 45 degrees. A receiver on the goal line 63 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in feet/second) if he is to catch...

**math**

Find a scalar equation of the plane that contains the given point P=(-3,-3,1)and the given normal vector n = (-1,4,7)

**AP Chemistry**

Form 300 mL of 0.25 M Copper 2 sulfate pentahydrate

**Math**

A waiter made $120 in tips after waiting on 6 tables. What was the waiter's average tip per table?

**Physics**

A commuter backs her car out of her garage with a constant acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 1.60 m/s? s (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration? m/s2