Friday

January 30, 2015

January 30, 2015

Total # Posts: 487

**physics**

In state-of-the-art vacuum systems, pressures as low as 1.00 10-9 Pa are being attained. Calculate the number of molecules in a 1.80-m3 vessel at this pressure and a temperature of 31.0°C.
*December 13, 2014*

**physics**

The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior pressure and exterior pressure. When the tank is full of oxygen (O2), it contains 10.0 kg of the gas at a gauge pressure of 43.0 atm. Determine the mass of oxygen that has ...
*December 13, 2014*

**physics**

In a student experiment, a constant-volume gas thermometer is calibrated in dry ice (−78.5°C ) and in boiling pentane (36.1°C). The separate pressures are 0.896 atm and 1.433 atm. Hint: Use the linear relationship P = A + BT, where A and B are constants. What ...
*December 13, 2014*

**Chemistry**

4P + 50_2 ---> 2P205 25.4g of P are used with excess 02 how many grams of p205 should theoretically form I have no idea where to start im lost
*November 25, 2014*

**math**

I need to figure coupon code. Code is 5 43000 18670 6. Do i subtract the 5 or add?
*November 16, 2014*

**Physics**

A bowling ball encounters a 0.760 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 5.40 m/s at the bottom of the rise. ...
*November 1, 2014*

**statistics**

For two events, C and D, P(C)=.16 and P(D)=.18 If C and D are independent events, then find P(D intersect C) and P(C given D) and P(D U C)
*October 19, 2014*

**Math (money)**

Brianna spent 1/6 of her money on a movie and $9 on dinner. If she had $16 left, how much money did she spend altogether?
*September 28, 2014*

**math**

Sarah has 10 stuffed animals. Explain two different ways she can group the stuffed animals so each group has the same number and no ... number and no stuffed animals ...
*September 17, 2014*

**Math**

21 cm
*September 16, 2014*

**calculus **

Verify Clairaut's theorem for u=ln(x^(2)-y^(2)).
*September 8, 2014*

**Corporate Finance**

Avicorp has a $14.3 million debt issue outstanding with a 6.1% coupon rate. The debt has semi-annual coupons. The next coupon is due in six months and the debt matures in five years it is currently priced at 95% of par value a) What is Avicorp's pre-tax cost of debt? Note...
*June 28, 2014*

**Corporate Finance**

Avicorp has a $14.3 million debt issue outstanding with a 6.1% coupon rate. The debt has semi-annual coupons. The next coupon is due in six months and the debt matures in five years it is currently priced at 95% of par value a) What is Avicorp's pre-tax cost of debt? Note...
*June 23, 2014*

**PreCalculus**

State the Vertical Asymptote, Horizontal Asymptote, domain, range, x intercept and y intercept for the following Function. y= (5-x)/(x+3) I already know that the Vertical asymptote is -3, so that means the domain is everything except -3, but how do I find the Horizontal ...
*April 8, 2014*

**Statistics**

Thank you
*March 27, 2014*

**Statistics**

For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,253; 5,578; 6,406; 7,334; 8,728; 11,298; 15,182. What is the annual arithmetic mean number of degrees awarded? About 9,120 ...
*March 27, 2014*

**Statistics**

Thank you! That is a lot of help!!
*March 27, 2014*

**Statistics**

8.Using the following statistics to describe a distribution of data, what is the interquartile range? Minimum = 13 Q1 = 25 Median = 54 Q3 = 72 Maximum = 98 25. 12. 85. 47.
*March 27, 2014*

**Statistics**

For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,253; 5,578; 6,406; 7,334; 8,728; 11,298; 15,182. What is the annual arithmetic mean number of degrees awarded? About 9,120 ...
*March 27, 2014*

**Statistics**

Thank you so much!!!
*March 27, 2014*

**Statistics**

A stockbroker placed the following order for a customer: • 50 shares of Kaiser Aluminum preferred at $100 a share • 100 shares of GTE preferred at $27.20 a share • 20 shares of Boston Edison preferred at $12.20 a share What is the weighted arithmetic mean price ...
*March 27, 2014*

**Statistics**

Thanks again!!
*March 27, 2014*

**Statistics**

The distribution of a sample of the outside diameters of PVC gas pipes approximates a symmetrical, bell-shaped distribution. The arithmetic mean is 11.0 inches, and the standard deviation is 2.0 inches. About 68 percent of the outside diameters lie between what two amounts? 8....
*March 27, 2014*

**Statistics**

Thank you
*March 27, 2014*

**Statistics**

The following are the weekly amounts of welfare payments made by the federal government to a sample of six families: $143, $138, $132, $136, $145 and $136. What is the range? $24 $9 $13 $0
*March 27, 2014*

**Math**

This number is less than 200. The ones digit is 5 less than 10. The tens digit is 2 more than the ones digit. What is the number?
*March 17, 2014*

**math**

find the cost of cementing a driveway that is 900 cm wide by 1600cm long by 3 cm thick. The price per cubic centimeter is $5.20.
*March 5, 2014*

**Math**

How much farther do you ride in one turn of a merry-go-round if you sit in the outside lane, 21 feet from the center, than if you sit in the inside lane, 14 feet from the center?
*February 24, 2014*

**PHYSICS**

6. Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimate the coefficient of static friction needed for a drag racer to cover 2.1 km in 8 s, starting from rest. ...
*February 23, 2014*

**Math**

The diameter is 6 2/5 ft. What is the area
*February 23, 2014*

**8th grade science **

How many (total) of each atom are there in the reactants and the products of cellular respiration? PLEASE HELP ME
*February 23, 2014*

**physics**

A force of 48 N is required to start a 7.8 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? \mu_s = (b) Does the coefficent of friction have a unit? A. No, it is a ratio B. No, the units are not ...
*February 21, 2014*

**PHYSICS**

You shoot your potato gun horizontally from shoulder height, which is 190 cm. The potato lands 15 m away from you. You would like the potato to go 90 m, so you climb up a ladder and fire the gun horizontally from there. How high over the ground must the gun be?
*February 15, 2014*

**Science**

Alternating current going into a transformer has 200 volts. The current coming out has 20 volts. How many loops of wire might each coil have?
*February 6, 2014*

**Chemistry**

How many moles of dichloromethane (CH2Cl2) would be produced if we doubled the amount of chlorine, but still had the same amount of ethene (C2H4) available in the reaction?
*February 4, 2014*

**writing**

I would like to write about the death of my brother but I need to come up with a thesis and I am suck on that can you please help me
*January 28, 2014*

**Consumer Math**

The quoient of 5/31 divided by 15/23 , reduced to lowest fraction is B. 23/93 C. 75/373 D. 93/23 or 4 1/23 I choose D
*January 28, 2014*

**American History**

In Jefferson's view, George Washington's action in addressing the Whiskey Rebellion A. amounted to an inappropriate overreaction. B. was appropriate but not sufficiently bold. C. wouldn't have been necessary save for the influence of Republican clubs. D. was a ...
*January 28, 2014*

**Consumer Math **

2. Express the fractions 1/2, 3/16, and 7/8 with an LCD. A. 1/4, 3/4, 7/4 B. 1/32, 3/32, 7/32 C. 4/8, 6/8, 14/8 D. 8/16, 3/16, 14/16 A
*January 27, 2014*

**Consumer Math **

15. The quotient of 794.1 divided by 7.61, expressed to two decimal places, is A. 104.35. B. 95.83. C. 1,043.50. D. 786.49. A
*January 27, 2014*

**Consumer Math **

11. You purchase a shirt for $8.50. There is a 6% sales tax. Your total cost will be A. $8.98 B. $8.55 C. $13.60 D. $9.01 I choose B
*January 27, 2014*

**Consumer Math **

3. The product of 7/16, 4/3, and 1/2 is A. 7/24. B. 21/32. C. 2 13/48. D. 7/12. I choose A
*January 27, 2014*

**Consumer Math **

1. If you divide an inheritance of $45,600.00 among 22 heirs, each heir will receive A. $2,073.72. B. $2,072.73. C. $207.27. D. $2,027.27. I choose B
*January 27, 2014*

**American History**

The Panic of 1837 resulted in large measure from A. the policies of Martin Van Buren's administration B. the policies of John Quincy Adams C. complex changes in the international economic system D. the cost associated with Indian removal I choose C
*January 26, 2014*

**American History**

The politicians who met at the Hartford Convention in1814 A. recommended changes in the Consitution B. represented the interests of the cotton-growing states C. favored secession from the Unioun D. were mainly concerned with increasing trade with British I choose A
*January 26, 2014*

**American History**

D. a "libreally negligent" state?
*January 26, 2014*

**American History**

Under America's second party system, the whigs stood for A. a "negative liberal state." B. policies that kept government hands off business and industry C. policies that directly supported commercial enterprises D. a "liberally negligent" state I choose A
*January 26, 2014*

**American History**

As drafted by Vice President, John C. Calhoun of South Carolina, the right of a state to set aside federal law was called A. reconciliation B. nullification C. abdication D. excision I choose B
*January 26, 2014*

**American History**

In Jefferson's view, George Washington's action in addressing the Whiskey Rebellion A. amounted to an inappropriate overreaction. B. was appropriate but not sufficiently bold. C. wouldn't have been necessary save for the influence of Republican clubs. D. was a ...
*January 26, 2014*

**American History**

Which of the following best describes the Columbian Exchange that occurred during the Age of Discovery? A. It was an exchange of trade foods. B. It was a genetic shift due to population interbreeding. C. It was a cultural transformation. D. It was a religious transformation I...
*January 26, 2014*

**American History**

Jacques Cartier sailed to the New World in 1534 in search of A. the Gulf of St. Lawrence. B. Newfoundland. C. Montreal. D. a northwest passage to China. I choose A but that isn't correct. My next option would be B. Newfoundland
*January 26, 2014*

**American History**

C. Jefferson
*January 26, 2014*

**American History**

Among members of George Washington cabinet _____ had a pessimic view of human nature and a dread of democratic excess. A. Adams B. Halimton C. Jefferson D. Marshall Im not sure of this answer I can't seem to find it in workbook..
*January 26, 2014*

**American History**

The Article of Confederation is called for which of the following? A. A single legislative body B. The Northwest Ordinace C. A chief executive D. The right of the legislature to asses taxes I choose A
*January 26, 2014*

**American History**

Which of the following statements is true of life in the New England colonies? A. Only married women could exercise control of their property B. Those who aspired to the social elite had to be members of a congregational church C. Literacy wasn't considered importan t D. ...
*January 26, 2014*

**American History**

In Mesoamerica, the shift to basic crops, including corn, beans, and squash is referred to as the ______ revolution. A. Native American B. green C. planters D. agricultural I choose D
*January 26, 2014*

**American History**

Jacques Cartier sailed to the New York in 1534 in search of A. Gulf of St. Lawernce B. Newfoundland C. Montreal D. A northwest passage to China I choose B
*January 25, 2014*

**American History**

In the southern campaign launched by the British, Cornwallis lost a battle with American under Nathaniel Greeene at A. Charles Town B. Camden C. Savannah D. Cowpens I choose A
*January 25, 2014*

**American History**

Which of the following is true with the regard to the Navigation Acts by the eighteen century? A. The colonists become used to buying and using British goods B.In general, the colonists desiped the acts and smuggling was rampant C. The acts replaced the colonial admiralty ...
*January 25, 2014*

**American History**

In America, the main influence of the Enlightenment was expressed through A. family life B.philosophies of religion C.moral values D. practical scientific experimentation I choose D
*January 25, 2014*

**History**

3. B Also
*January 21, 2014*

**History**

The Rest is right, Tell me what you get :)
*January 21, 2014*

**History**

Maggie, First Answer Is Wrong It's a marriage in the slaveholder’s family
*January 21, 2014*

** Math**

I am trying to complete this input/output table. Input 0 output blank, input 3/2 output 17/6, input 11/4 output blank, input 3 output 13/3, input blank output 13/2
*January 15, 2014*

**math**

Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.)
*November 13, 2013*

**books (Death of a Salesman)**

Consider both the positive and negative influence Linda's support may have had on Willy. Explain how each example may be seen as a positive influence and as a negative influence. I only need 3 examples. Please help!
*October 17, 2013*

**physics**

A pellet gun is fired straight downward from the edge of a cliff that is 23.1 m above the ground. The pellet strikes the ground with a speed of 38.6 m/s. How far above the cliff edge would the pellet have gone had the gun been fired straight upward? I get 99.118 but the answer...
*September 10, 2013*

**physics**

A pellet gun is fired straight downward from the edge of a cliff that is 23.1 m above the ground. The pellet strikes the ground with a speed of 38.6 m/s. How far above the cliff edge would the pellet have gone had the gun been fired straight upward? I get 99.118 but the answer...
*September 10, 2013*

**Physics**

A hot-air balloon is rising upward with a constant speed of 2.27 m/s. When the balloon is 9.14 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground? I solve for the quadratic and ...
*September 10, 2013*

**Maths-Help**

A silicon ingot, which should contain 10^16 boron atoms/cm3, is to be grown by the Czochralski technique. What concentration of boron atoms should be in the melt to give the required concentration in the ingot ? If the initial load of Si in the crucible is 60 kg, how many ...
*August 11, 2013*

**Business Math**

5,400,000
*May 22, 2013*

**math**

If you put me into 7 equal groups with 3 in each group and 5 left over,, what number am I?
*May 8, 2013*

**social studies**

With regard to the quantity of end items procured with a given procurement appropriation, the Secretary of Defense: Can authorize any quantity of items to be procured. Cannot exceed the quantity specified in the defense appropriation act. Can acquire as many end items as can ...
*April 23, 2013*

**chemistry**

If 275 mL of hydrogen gas is produced at STP, what is the mass of lithium that reacted
*April 18, 2013*

**math 4th grade**

Find a common denominator.
*April 16, 2013*

**math**

You are developing a data base for Army tracked combat vehicles and you are normalizing the data base to base year 2006 dollars. What number would you enter into the data base for a vehicle budgeted at $1,725,000 in the FY08 appropriation? $1,604,505 $1,654,754 $1,573,044 $1,...
*April 8, 2013*

**Chemistry**

What is the molarity of an aqueous solution containing 27.3 g of glucose (C6H12O6) in 1.7 L of solution?
*April 4, 2013*

**business law**

Your Procuring Contracting Officer just signed a contract citing $50,000 of RDT&E funds based on your comptroller''s certification of funds. Shortly afterward, you discover that there was really only $40,000 available for the fund citation provided. Assuming that the ...
*April 4, 2013*

**Chemistry**

During your titration, you overshot your endpoint and your solution was too pink. Would this lead to a final pKa that was too high or too low? Explain why using chemical reasoning.
*March 17, 2013*

**MATH 112 helpl please**

Bill brought four times as may apples as harry and three times as may apples as martin. If Bill, and martin purchased less than a total of 190, apples, what is the greatest number of apples that bill could have purchased?
*March 16, 2013*

**COLLEGE MATH**

What is the PROCUREMENT cost of this system? Cost Types Cost (in millions) Research/Development $400 Procurement of Prime mission $800 Procurement of support equipment $100 Procurement of Initial Spares $100 Operations & and Support $70,000 Disposal $100 ANWERS! (A). 800 ...
*February 16, 2013*

**MATH**

WHAT IS THE BELOW PROGRAM ACQUISTION COST OF THE SYSTEM?( COST TYPES COST (IN MILLIONS OF DOLLARS) RESEARCH, DEVELOPMENT 400 MILLION PROCUREMENT EQUIPMENT 800 PROCUREMENT SUPPORT 100 PROCUREMENT PARTS 100 OPERATIONS & SUPPORT $70,000 disposal $100 my answers $1,5000 million $1...
*February 15, 2013*

**Alegebra I**

I need help with the following questions. Write each answer as a power of 2. Show your work and explain your steps. a. Computer capacity is often measured in bits and bytes. A bit is the smallest unit, which is a 1 or 0, in the computer's memory. A byte is 2^3 bits. A ...
*February 3, 2013*

**Physics**

A ball with a mass of 5.8 kg is moving to the right at 10.3 m/s and collides with a stationary ball of mass 10.9 kg. After the collision, the 5.8 kg ball moves to the right, but at an angle of 20° below the horizontal, at a speed of 4.3 m/s. Find the speed of the 10.9 kg ...
*December 20, 2012*

**Chemistry**

What mass of glycerin (C3H8O3), a nonelectrolyte, must be dissolved in 400.0 g water in order to give a solution with a boiling point of 103.50 C?
*December 17, 2012*

**URGENT!! 7th Grade Math Help Please!!**

first thing about percentage problems think either decimals or factions. Decimals if your teacher is nice and lets you use a calculator. .15*329=$49.35 will be taken off the original price $329.00-$49.35=$279.65 new discounted price Now for the fractional version if you like ...
*December 3, 2012*

**Chemistry 3A**

Think of Boyle's law from the three gas laws. P1V1=P2V2.you have p1, p2 and v1. then it just simple algebra solve for v2.
*December 3, 2012*

**Chemistry**

Oh this is easy. I want you to take a look at your periodic table. Any elements that's toward the left and down are larger in Atomic size. So for instance rubidium is the largest in atomic size due to it further down and to the left.
*December 2, 2012*

**Atomic Size**

Oh this is easy. I want you to take a look at your periodic table. Any elements that's toward the left and down are larger in Atomic size. So for instance rubidium is the largest in atomic size due to it further down and to the left.
*December 2, 2012*

**physics**

Water Flows upward throw the pipe shown in the diagram at 96 L/Min. If the pressure at the lower end is 80kPa, find the velocity of the water is at both ends and the pressure at the upper end. Assume that the density of water remains constant throughout the tube and that h1= ...
*December 2, 2012*

**Chemistry Help**

I'm confused whats the problem looks to me all you need to do is plug and chug.to find temperature make sure it is in kelvin.
*December 2, 2012*

**algebra**

The guy wire, the telephone phone and the ground form a right-angled triangle. Your measurements are x, x+4, and 20. To solve for x, you could use the Pythagorean Theorem, a^2+b^2=c^2. Let a=x Let b=x+4 Let c=20 First, plug in the values for a, b and c, and then simplify. From...
*December 2, 2012*

**Chemistry**

4 C3H5(NO3)3(s) ---> 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) 1.3 e 2
*December 2, 2012*

**Chemistry**

Nitroglycerin, an explosive compound, decomposes according to the equation below. 4 C3H5(NO3)3(s) 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) Calculate the total volume of gases when collected at 1.2 atm and 25°C from 1.3 102 g of nitroglycerin.
*December 2, 2012*

**statistics**

Refer to the Baseball data, which report information on the 30 Major League Baseball teams for the 2010 season. Let the number of games won be the dependent variable and the following variables be independent variables: team batting average, number of stolen bases, number of ...
*December 2, 2012*

**chemistry**

List the following bonds in order of increasing ionic character. (Enter your answer in the format H-O for the hydrogen-to-oxygen bond in H2O. Use the appropriate <, =, or > symbol to separate substances in the list.) the barium-to-fluorine bond in Ba-F the magnesium-to-...
*November 26, 2012*

**Math**

Use linear approximation to show that each function below can be approximated by the given expression when |x| is small i.) sinx ~ x ii.) e^x ~ 1+x iii.) ln(1+x) ~ x
*November 15, 2012*

**Physics**

F=6kt This force acts on a particle of mass "m" that moves along a line. If the particle starts from rest, determine its velocity and position at time t.
*November 12, 2012*

**physics**

Consider a pulse of laser light aimed at the Moon that bounces back to Earth. The distance between Earth and the Moon is 3.84 * 108 m. Show that the round-trip time for the light is 2.56 s
*November 8, 2012*

**Programming**

Read two numbers from the keyboard Display the menu options as follows: 1 - computes the sum of two numbers. 2 - computes the difference (first minus second). 3 - computes the product of the two numbers. 4 - if the second number is not zero, computes the quotient (first ...
*October 30, 2012*

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