# Posts by tom

Total # Posts: 1,421

**Chemistry**

76

**physics**

A 6.9 kg bowling ball travelling at 6.4 m/s strikes a stationary 1.4 kg bowling pin. After the collision, the pin flies forward at 6.4 m/s. How much kinetic energy was lost in the collision?

**english**

Many american are liveing beyond their means by abuseing thier credit cards. You concider their credit limit as another sourse of income and charge up to the limit then they had to pay enormous finance charges evry month because they have run their credit cards to the limit. ...

**11th grade English**

Many american are liveing beyond their means by abuseing thier credit cards. You concider their credit limit as another sourse of income and charge up to the limit then they had to pay enormous finance charges evry month because they have run their credit cards to the limit. ...

**economics (micro)**

2. In the table below, assume a monopsonist has the marginal-revenue-product schedule for a particular type of labor given in columns 1 and 2 and that the supply schedule for labor is that given in columns 1 and 3. (1) (2) (3) (4) (5) Number of MRP Wage Total Marginal labor ...

**Organic Chemistry**

Oh alright , it's alcohol right?

**Organic Chemistry**

The following reaction would produce a(n) __________. R-OH + R'COOH →

**COM 220**

Can some one please help me come up with an full sentence outline on same sex marriage (opposing it)

**6th grade math**

14/15-13/16= show work

**computers**

What are authorization rules?

**fine art**

what is the diference between a fine art painting and a picture

**chemistry**

I'm sorry...it's a 0.821-mol sample of a substance..... Thank you

**chemistry**

A 0.821 sample of a substance composed of diatomic molecules has a mass of 131.3g. Identify this molecule. May I have your expert help with this question? Thank you.

**adult education**

what is the total resistance in a circuit having 3 feetof 10 ohm/ft wire, with two 15 ohm resistors wired in parallel?

**HVAC / Electrical**

what is the total resistance in a circuit having 3 feetof 10 ohm/ft wire, with two 15 ohm resistors wired in parallel?

**English**

Wait I do not get this when and whent i look online and it said that whent isn't a word but how do i say something like this: I whent home. or is it I when home. Any i'm no good at past tenses

**math**

factorise 7x^2 - 19x + 10 13x - 20 - 2x^2 28n - 10 + 6n^2 please can you show me the method thanks

**healthcare**

need combining form for midsagittal

**chemistry**

a 150ml sample of wetlands water requires 25.00 mL of a 0.0250 MH2SO4 solution for neutralization. Calculate the molarity of CaCO3 in the sample

**Chemistry**

Thanks so much!

**Chemistry**

That helps. But I still don't understand why we subtract the reactants from the products in one case and when using bonds we subtract the products from the reactants.

**Chemistry**

Why do we have these two equations: ΔH° = ΣD (bond broken) – ΣD (bond formed) and ΔH = Σ ΔHf products - Σ ΔHf reactant I don't understand when we use which one and why? Please help. Thanks.

**hsm 210**

week 8 . need hel getting started with evaluating communication strategies

**Biology**

Glycolitic enzymes are required for glycolysis-energy production. These enzymes G6P dehydrogenase 6PG dehydrogenase are requred for neucleotide and nucleic acid biosyntheses- the restoration of damaged cells (and their DNA) after injury

**Algebra**

thank so much

**Algebra**

There are three consecutive integers the square of the largest one equals the sum of the squares of the two other.Find the integers

**math**

what is the remainder when ka^3-3a^2+5a-8 is divided by a+1. please help and thank you

**algebra**

3 4/9 x 1 4/5 show work please

**critical thinking**

Red herring

**chemistry**

Given 1.115 atm of carbon monoxide reactimg with 1.553 atm of oxygen in a closed container at a constant temperatue, what is the theoretic yield of the carbon dioxide?

**chemistry**

how many grams of solute are in 250ml of 0.500M glycerin . (C3H8O3=92.1 amu)?

**AP BIO**

2. Suppose the DNA molecule were composed of six monomers. In addition to the monomers A, T, C and G, two other monomers, O and P, were present. Furthermore, O and P were known to pair only with each other. Which of following statements regarding this kind of DNA molecule ...

**AP BIO**

1. A biologist measured the amount of DNA in several single diploid cells taken from a culture. He knew that these cells could divide mitotically, but not meiotically. His data is shown below: Cell Number and DNA content in micrograms: Cell 1 (11.1 micrograms) Cell 2 (5.4 ...

**Statistics**

Calculate the following: a) Determine the sample size necessary to estimate a population mean to within 1 with a 90% confidence given that the population standard deviation is 10. b) Suppose that the sample was calculated at 150. Estimate the population mean with 90% confidence.

**Statistics**

Determine the sample size necessary to estimate a population proportion to within .03 with 90% confidence assuming you have no knowledge of the approximate value of the sample proportion.

**Statistics**

Draw the operating characteristic curve for n = 10, 50, and 100 for the following test: Ho: ì = 400 Hi: ì > 400 á = .05, ó = 50

**Statistics**

HO: µ = 70 H1: µ > 70 ó = 20, n = 100, xbar = 80, á = .01 a) calculate the value of the test statistic b) set up the rejection region. c) determine the p-value d) interpret the results

**statistics**

A statistics practitioner would like to estimate a population mean to within 50 units with 99% confidence given that the population standard deviation is 250. a) What sample size should be used. b) Repeat part (a) with a standard deviation of 50. c) Repeat part (a) using a 95...

**Auditing**

8 d

**pre-calculus**

Graph each complex number. Then express it in rectangular form. 2(cos(4pi/3) + isin(4pi/3)) I don't understand where to go from here.

**calculus**

Evaluate lim as x-> 0 square root (x+1) - square root (2x+1) / square root (3x+4) - square root (2x+4)

**Math**

What is the fromula to calculate the volume of a washer?

**quick precal concept**

is there no solution for a triangle with C=50deg a=25 c=22?

**mth 157**

Determine which types of display could be used to illustrate the given data. 4) The midterm test scores for the seventh-period typing class are listed below. 85 77 93 91 74 65 68 97 88 59 74 83 85 72 63 79 Which of the following types of display could be used to illustrate ...

**mth 157**

Drawing one slip, what is P (slip contains a vowel)?

**biology**

what are some of the ways in which we can differentiate spores from coccus shaped bateria?

**biology**

what are three function of a teeth

**biology**

what are three function of a teeth

**biology**

what are three function of teeth

**Biology**

Can you give the speed in the capillaries as a percentage of the speed in the arteries.

**Biology**

Why is it desirable for blood to flow through the capillaries comparratively slowly.

**Biology**

Is there an experiment which you could do to test the suggestion that veins have more stretchable walls than arteries.

**Biology**

Is there an experiment which you could do to test the suggestion that veins have more stretchable walls than arteries.

**Biology**

Why veins contain valves.

**Biology**

Why capillaries have very thin walls.

**physics**

113.5

**Language**

How do I set up a comparsion table for two stories

**math**

Solve the inequality and show the number line. x + 29 < 33 for x > 0

**Biology**

Why arteries have more muscle in their walls than veins

**Biology**

Why the left ventricle has a thicker more muscular wall than the right ventricle.

**Biology**

Why the right atrium is larger than the left atrium.

**Biology**

Why does the blood pressure goes up and down all the time.

**Can't understand trig problem**

Your answer is right

**Carpentry**

Parts of a concerte block

**cjs 250 Intro to security**

if a church has no security plan in place, what would be a less pertinent component for that particular environment during a vulnerability assessment?

**FDA**

whats the FDA's main job has it Has it implemented any new rules recently?

**Politics**

When and why was The FDA formed? Was it in response to a national event or some sort of emergency?

**carpentry**

how to install a lock

**religous**

from the 4 theories which is least likly to bene fit from wining the lottery and why

**Religious**

Explain the concept of hedonism an how is this concept seen as the dominant theory in our society today.

**Religious**

why is the concept of determism often regarded as more important than christianity.

**Accounting**

North Pole Cruise Lines issued preferred stock many years ago. It carries a fixed dividend of $6 per share. With the passage of time, yields have soared from the original 6 percent to 14 percent (yield is the same as required rate of return). A. What was the original issue ...

**biology**

Compare and contrast the phloem and xylem vessels.

**biology**

explain how water is transport from the root to mesophyll cells in a leaf

**religion**

Much Thanks, Ms. Sue.

**religion**

Does anybody have a website with recent demographics on religions or at least Buddhism? Google doesn't really help.

**carpentry**

Explain the number behind the abrasive sheets

**Carpentry**

Explain the number behind the sheets

**carpentry**

list types of abrassive material.

**carpentry**

What is abrassive.

**History**

When did the Latin American Revolution start?

**Social Studies**

What was the purpose of Hammurabi's Code

**economics**

"The Fed should simply increase the money supply at the same rate that the full employment economy grows, and the government should desist from any stabilizing urges." What school of thought would make this suggestion, and how do economists of that school justify ...

**physics**

A dolphin jumps with an initial velocity of 10.5 m/s at an angle of 32.0° above the horizontal. The dolphin passes through the center of a hoop before returning to the water. If the dolphin is moving horizontally when it goes through the hoop, how high above the water is ...

**physics**

A 0.34 kg pendulum bob is attached to a string 1.2 m long. What is the change in the gravitational potential energy of the system as the bob swings from the bottom of the string, where θ = 37°? i don't know how to do this. The bottom of the string is 1.2 m and it ...

**arithmetic**

On one of the questions of a recent math test, a student divided by 9 instead of multiplying by nine. This computation gave an answer of 18. What's the correct answer?

**music**

5 ways to change a melody to an arrangement

**electrical**

Explain the term short circuit and open circuit ?

**Physics**

A 0.15 kg baseball is thrown towards a batter with a velocity of 40 m/s. The batter hits the ball and returns it directly back with a velocity of 60 m/s. What is the change in momentum of the ball?

**Family Life**

Information on drugs

**Language**

How do you start off a business letter.

**algebra**

parallel to line 2/3x-4=0 through (-4,-6)

**pre-algebra**

just do the price, in BRAND A's case 15.98 times the discount- 30%...move the decimal back two places...turns into .30 15.98 X .30 = your answer

**family life**

information on teenage pregnancy

**Chemistry**

How many milliliters would it take to titrate 10.0 mL of 0.75 M HCl with 0.10 M NaOH?

**ancient history**

go to google and type in roman goddess of love. You will get tons of information.

**science**

Explain why the index of refraction of an object is a physical property?

**science**

what do you notice about the ratio (sin θi/ sin θR) for all angle of incidences greater than 0 degrees? explain why you would expect this to be true?

**family life**

One more thing Can you give me an example of a goal . Thanks.

**Family Life**

how to create a step-by-step action plan.