Thursday

July 28, 2016
Total # Posts: 4,323

**general physics**

An axle of a mass of 10 kg, length 10 cm and radius .1 m is free to rotate about the axis which runs the length of the axle, throuhh it's center. A chain of mass 4kg is fastened to the axle at one end, wound exactly 6 times around the axle, and a rock of mass 1.8 kg ...
*December 9, 2014*

**calc**

I am having trouble taking the first integral. I get y^2/2 (x+y+1)^3/2 (1) is this correct? or do I take the integral of the inside instead of the derivative.
*November 30, 2014*

**calc**

evaluate the surface integral double integral (y dS) z= 2/3 (x^3/2 + y^3/2) 0 ≤ x ≤ 5, 0 ≤ y ≤ 2
*November 30, 2014*

**U.S. History**

I cant find any statistics with in my text book related to that question. And I dont know what year they were asking for since they dont mention it1
*November 25, 2014*

**U.S. History**

Yes that would be the answer for the year 2014 but there is no year mentioned in that question and my textbook is from 2002?
*November 25, 2014*

**U.S. History**

Approximately ___ of the country's adult population has Internet access. a. one-third b. two-thirds c. one-quarter d. three-quarters Would it be answer B?
*November 25, 2014*

**U.S. History**

Not being sovereign, it does not call the United States of America a "nation" or "government," but instead says, "The said States hereby severally enter into a firm league of friendship with each other, for their common defense, the security of their ...
*November 24, 2014*

**U.S. History**

All of them were weaknesses, however the way it was mentioned in most texts it that there was no national judiciary therefore I was thinking maybe its answer C?
*November 24, 2014*

**U.S. History **

which of the following was not a weakness of the articles of confederation (1781-1789)? A) a week "league of friendship" among the states B) the requirement of unanimous approval by all 13 states for amendments C) no judicial branch D) no congressional power to ...
*November 24, 2014*

**now mr. damon, physics**

A 63.8 kg block of silver is at initially at 107 C. 1.0 kg of ice at its freezing point is placed onto the block to cool it. As the ice melts, the water is free to flow off (so that the water never increases in temperature). After all the ice melts, what is the final ...
*November 24, 2014*

**physics (would mr. sue or mrs damen answer my ques**

A 63.8 kg block of silver is at initially at 107 C. 1.0 kg of ice at its freezing point is placed onto the block to cool it. As the ice melts, the water is free to flow off (so that the water never increases in temperature). After all the ice melts, what is the final ...
*November 24, 2014*

**physics, please help**

A 63.8 kg block of silver is at initially at 107 C. 1.0 kg of ice at its freezing point is placed onto the block to cool it. As the ice melts, the water is free to flow off (so that the water never increases in temperature). After all the ice melts, what is the final ...
*November 24, 2014*

**physics**

A 63.8 kg block of silver is at initially at 107 C. 1.0 kg of ice at its freezing point is placed onto the block to cool it. As the ice melts, the water is free to flow off (so that the water never increases in temperature). After all the ice melts, what is the final ...
*November 24, 2014*

**chemistry**

How many milliliters of 0.413 M NaC2H3O2 are needed to supply 27.3 g NaC2H3O2?
*November 23, 2014*

**science**

What r 4 alkali's that u would find in the house????? Luv Sara xxxx
*November 23, 2014*

**programming**

would someone be able to give me an idea of how to start coding this in C? You just finished playing cards with a group of friends and each time your score changed in the game you wrote it down. Given the total number of points it takes to win the game and all of your scores (...
*November 20, 2014*

**Math, Please Help!**

If 99 people had a mean income of $45,000, how much is the mean income increased by the addition of a single income of 250,000
*November 19, 2014*

**physics grade 11**

1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population of around 500 000 people and Milton (part of Halton Region) has a population of around 85 000 people. Assuming all people in Halton use the same ...
*November 16, 2014*

**physics**

1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population of around 500 000 people and Milton (part of Halton Region) has a population of around 85 000 people. Assuming all people in Halton use the same ...
*November 16, 2014*

**physics**

1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population of around 500 000 people and Milton (part of Halton Region) has a population of around 85 000 people. Assuming all people in Halton use the same ...
*November 15, 2014*

**physics**

1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population of around 500 000 people and Milton (part of Halton Region) has a population of around 85 000 people. Assuming all people in Halton use the same ...
*November 15, 2014*

**physics**

1) In 2011, the total of all residential customers in Halton Region used 54 540 000 m3 of water. Halton Region has a population of around 500 000 people and Milton (part of Halton Region) has a population of around 85 000 people. Assuming all people in Halton use the same ...
*November 15, 2014*

**Math**

49,62, 75, 43, 46
*November 14, 2014*

**Statistics Help!**

Please help! In a combined study of northern pike, cutthroat trout, rainbow trout, and lake trout, it was found that 22 out of 845 fish died when caught and released using barbless hooks on flies or lures. All hooks were removed from the fish. Let p represent the proportion of...
*November 12, 2014*

**math**

Use Green's Theorem to evaluate F(x, y) = y cos x − xy sin x, xy + x cos x , C is the triangle from (0, 0) to (0, 4) to (2, 0) to (0, 0) I kind of understand how to do this , but I am having trouble with the trig
*November 11, 2014*

**Square Roots **

Between what two consecutive integers does the square root of 124 lie? 11 and 12 12 and 13 13 and 14 14 and 15
*November 11, 2014*

**math**

Use Green's Theorem to evaluate the line integral along the given positively oriented curve. integral of xy2 dx + 4x2y dy C is the triangle with vertices (0, 0), (2, 2), and (2, 4)
*November 11, 2014*

**CS**

what would the output of this code be? int startDay = 6; int day = 22; switch(startDay) { case 5: day += 1; case 6: day = day + 1; case 0: ++day; case 1: day++; case 2: day += 1; default: day = day + 1; } printf("day: %d\n", day); the answer is 27, but i thought it ...
*November 10, 2014*

**physics**

A 7.75 kg(75.95 N)box is placed on a 29.7° incline on top of a lab table. The ramp is 3.11 m long, at the bottom of the incline the box slides horizontally for a short distance before rolling off the lab table. If the table is 0.84 m high, find how far from the table the ...
*November 9, 2014*

**Shakespeare**

Why is Shakespeare’s work still worth reading?
*November 7, 2014*

**sbmjc**

how many moles of methane is required to produce g of co2 after the complete combustion ?
*November 6, 2014*

**Physics**

A large flatbed truck hauls a heavy wood crate as shown. The crate is not tied down and simply rests on the metal bed of the truck. Find the maximum acceleration the truck can have if the crate is not to slide along the truck bed. (Static friction is 0.5 and kinetic friction ...
*November 5, 2014*

**Physics **

The 56 kg man in the roller coaster car is sitting on a bathroom scale. If he is traveling at 40.9 m/s at the point shown and the radius of the vertical coaster track is 87 meters, to the nearest newton what does the scale read? What is the answer to the previous problem if ...
*November 2, 2014*

**Chemistry**

Find the mass of each of the following: (a) 5.52 L O2 at 1.89 atm and 250.0 K (b) 3.43 L NH3 at 0.911 atm and 27°C (c) 117 mL SO2 at 0.823 atm and -53°C
*November 2, 2014*

**chemistry**

Thanks
*November 2, 2014*

**chemistry**

What is the eq.wt of C7H6O3 and why ??😊
*November 2, 2014*

**Chemistry**

A sample of oxygen that occupies 1.00 x 10^6 mL at 575 mm Hg is subjected to a pressure of 1.20 atm. What will the final volume of the sample be if the temperature is held constant?
*November 2, 2014*

**chemistry**

What is the eq.wt of C7H6O3 and why ??😊
*November 2, 2014*

**chemical**

Ican't found the answer
*November 2, 2014*

**chemical**

What the eq.wt of C7H6O3 and why?
*November 2, 2014*

**Calculus**

A right circular cylinder is changing shape. The radius is decreasing at the rate of 2 inches/second while its height is increasing at the rate of 5 inches/second. When the radius is 4 inches and the height is 6 inches, how fast is the a) volume changing (V=(pi)r^2h) b) ...
*November 2, 2014*

**chemestry**

consider the reaction 2N2O(g) == O2(g)+2N2(g).which of the following will cause a shift in the equilibrium to the left?
*November 1, 2014*

**Width of a square**

A rectangle has an area of 45 square centimeters and a length of 10 centimeters. What is the width of the rectangle? 55 centimeters 35 centimeters 4.5 centimeters 3.5 centimeters (my answer)
*October 31, 2014*

**Sociology**

About how many cases of Elderly abuse are reported? 1) 1of 5 2)1 of 8 3)1 of 10 4)1 of 14
*October 30, 2014*

**Socioloy**

Cassie is a 15 year runaway who is assaulted. Which victimization theory would best apply to her stituation? 1)Victim precipitation 1)Lifestyle Theory 3)Deviant place Theory 4)Routine activities Theory
*October 30, 2014*

**Modern law**

how is modern law and government have been influenced by classical Greece and Rome
*October 28, 2014*

**AP Chemistry**

Thank You! Great Explanation!
*October 28, 2014*

**AP Chemistry**

Thank You! Great Explanation!
*October 28, 2014*

**AP Chemistry**

if the energy to break bonds is greater than the energy to form the bonds, is it exothermic?
*October 28, 2014*

**can someone please help me with sign language**

what do you need help with
*October 27, 2014*

**Health**

The Muscle mass belongs to the posterior group.
*October 27, 2014*

**physics**

A beam of particles is directed at a 0.016-kg tumor. There are 2.1 x 1010 particles per second reaching the tumor, and the energy of each particle is 5.4 MeV. The RBE for the radiation is 14. Find the biologically equivalent dose given to the tumor in 16 s.
*October 27, 2014*

**physics**

A 20 g fridge magnet is being held onto the fridge by a 0.9 N force. coefficient of kinetic friction is 0.3 . a. calculate the friction acting on the magnet. b. calculate the weight of the magnet c.the acceleration of the magnet. also, explain the situation, cause i dont get it.
*October 25, 2014*

**Thesis statement**

Because it makes families closer
*October 24, 2014*

**Thesis statement**

i'm talking about why family relationships are important
*October 24, 2014*

**Thesis statement**

I need help writing a thesis statement about family relationships
*October 24, 2014*

**math**

You are the financial planner for Johnson Controls. Assume last year’s profits were $760,000. The board of directors decided to forgo dividends to stockholders and retire high-interest outstanding bonds that were issued 5 years ago at a face value of $1,420,000. You have ...
*October 23, 2014*

**please help**

Choose the answer that identifies the nominative case pronouns. I, you, he, she, it, us, you, they I, you, he, she, it, we, you, they I, you, he, she, it, we, you, them I, you, he, she, its, we, you, they # 3 is the answer?
*October 23, 2014*

**Grammar**

1. Choose the answer that identifies the three cases of pronouns. nominative, objective, possessive nominative, antecedent, objective objective, possessive, prepositional objective, indefinite, possessive**** My answer
*October 23, 2014*

**physical science**

calculate the force output by the larger piston of a hydraulic lift when a force of 700 newtons is excerted on the smaller piston and the areas of the two pistons are 20cm and 950cm squared.
*October 21, 2014*

**math**

A golf cart has either 3 or 4 wheels. John checked all 25. How many 3 wheeled how many 4 wheeled
*October 21, 2014*

**physic**

A ball is thrown toward a cliff of height h with a speed of 28m/s and an angle of 60∘ above horizontal. It lands on the edge of the cliff 3.3s later. a) How high is the cliff? i got 26.7 m b) What was the maximum height of the ball? my answer here was 30 m C) What is the...
*October 21, 2014*

**Perimeter and Area**

The set of points (2, 3), (9, 3), (9, 2), and (2, 2) identifies the vertices of a quadrilateral. Which is the most specific description to tell which figure the points form? parallelogram square rectangle trapezoid
*October 21, 2014*

**physic**

Thanks Damon, I realized that I forgot to multiply my velocity by time (3.3). I tried to do the next part but my answer is not right. can you double check this? c) What is the ball's impact speed? I found fall time 3.3-2.47=0.83s then I used this formula V1=V0+gt = 0+9.80*...
*October 21, 2014*

**physic **

A ball is thrown toward a cliff of height h with a speed of 28m/s and an angle of 60∘ above horizontal. It lands on the edge of the cliff 3.3s later. a) How high is the cliff? i got -29.2 m but my answer is wrong b) What was the maximum height of the ball? im not sure ...
*October 21, 2014*

**math**

I labeled a clock, dice, and straight line A,B,C,D and with the chart below them it says to use those points to label and name representations of each of the following table: ray, line, line segment, and angle. Extend segments to show lines and rays. Need help because I'm ...
*October 21, 2014*

**statistics**

Use the z-table to find the requested probabilities. Enter your answers to 4 decimal places. (a) P(z < −1.02) = Incorrect: Your answer is incorrect. (b) P(z ≥ 2.43) = (c) P(−1.80 < z < 1.36) =
*October 20, 2014*

**statistics**

Assume heights and weights are normally distributed with the given means and standard deviations from the table below. Strata Mean Standard Deviation Mean Standard Deviation Height Height Weight Weight (inches) (inches) (pounds) (pounds) U.S. Men 69.3 2.8 191 28 U.S. Women 64....
*October 20, 2014*

**statistics**

The bass in Clear Lake have weights that are normally distributed with a mean of 1.9 pounds and a standard deviation of 0.8 pounds. (a) If you catch 3 random bass from Clear Lake, find the probability that the mean weight is less than 1.0 pound. Round your answer to 4 decimal ...
*October 20, 2014*

**statistics**

Potatoes - Samples: Assume the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.0 ounces and a standard deviation of 1.3 ounces. He bags his potatoes in groups of 6. You buy a bag and the total weight is 42 ounces. Here we determine how lucky or ...
*October 20, 2014*

**AP Chemistry**

What is the change of enthalpy associated with the combustion of one mole of pentane? C5H12 + 8O2 ¨ 5CO2 + 6H2O I'm very confused, Please help!
*October 19, 2014*

**math**

How to solve for t 2465=204.8t+4.6t^2
*October 19, 2014*

**physics**

Traveling at a speed of 12.1 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.740. What is the speed of the automobile after 1.42 s have elapsed? Ignore the effects of ...
*October 18, 2014*

**chemistry**

which of the following is consistent with the line spectrum of the hydrogen atom? one of the choices is the nucleus is udnergoing gamma decay. but this si not one of the answers. Im just wondering what kind of decay happens?
*October 18, 2014*

**research help**

I need help with some research topics for a paper?
*October 17, 2014*

**Biology**

how does a change in the sequence of nucleotides in a strand of DNA might cause a protein to malfunction.
*October 16, 2014*

**Biology Help**

how does the structure of a cellulose molecule relates to the molecule’s function?
*October 16, 2014*

**math**

Ralph bought 4 books for k dollars each. Iris bought 5 books for k dollars each. If together they spend 90 dollars, how much is each book? 4k+5k=90 so 9k=90 90/9=10 so $10 each
*October 16, 2014*

**math**

Rhonda bakes p pies. Mary bakes 3p pies. If together they bake 20 pies, how many pies does Mary bake?Rhonda bakes p pies. Mary bakes 3p pies. If together they bake 20 pies, how many pies does Mary bake? I would've thought p+3=20 so 20-3=17 making it p=17 but not sure that ...
*October 16, 2014*

**math **

solve this equation a divided into 7=20 the actual problem has the divide sign. I got a=20*7 so a=140
*October 16, 2014*

**math **

solve this equation a divided into 7=20 the actual problem has the divide sign. I got a=20*7 so a=140
*October 15, 2014*

**physics**

Alice ((7.500x10^1) kg) and Bob ((8.5x10^1) kg) are standing at rest on friction free ice. Alice pushes Bob causing Bob to accelerate at (2.300x10^0) m/s^2. What is the magnitude of Alice’s acceleration?
*October 15, 2014*

**physics**

A (1.35x10^2) kg box is falling near Earth’s surface. It is accelerating at (7.3000x10^0) m/s^2 [D]. What is the force of air resistance on the box?
*October 15, 2014*

**vocabulary help**

When the realtor realized that there was a large dent in the floor, he tried to __________ cover it before the potential buyers noticed it. flagrantly ostensibly (my answer) surreptitiously latently Choose the word that best completes the sentence. After traffic made them late...
*October 15, 2014*

**Check my answers**

Question 1.Choose the answer that identifies the case of the parentheses word. My grandparents always go to the square dances with the Warrens and (them). nominative objective possessive *** my answer none of the above Question 2. Choose the pronoun that best completes the ...
*October 15, 2014*

**math**

Manuel painted 4 houses over the summer. John painted x houses. Patrick painted 2 houses. They painted 9 houses in all. How many houses did John paint? Not sure if it's x-(4+2)=9 or is it x+(4+2)=9
*October 15, 2014*

**math**

Max has 5 more than twice as many cookies as Chris. Write an expression that shows the number of cookies Max has if Chris has c cookies. 5+2x=c Not sure please help.
*October 15, 2014*

**math**

5 less than three times the number of chipmunks. We got 3x-5 but weren't sure.
*October 14, 2014*

**phys**

An electron of kinetic energy 50 keV moves in a circular orbit perpendicular to a magnetic field of 0.405 T. Find the radius of the orbit. I tried using KE=mv^2/2 to find velocity. then using qBv=(mv^2)/r to solve for r. but my answer was wrong. I am pretty sure this is the ...
*October 14, 2014*

**Perimeter and Area**

Which best describes the polygon whose vertices in the coordinate plane are (2, 3), (2, 3), (2, 1), (2, 1)? only equilateral only equiangular regular none of these
*October 14, 2014*

**Perimeter and Area**

Which best describes the polygon whose vertices in the coordinate plane are (5, 5), (0, 5), (0, 0), (5, 0)? only equilateral only equiangular regular none of these
*October 14, 2014*

**Lasting Influences**

i chose history but i'm having trouble explaining it
*October 14, 2014*

**Lasting Influences**

What of these Greek achievements was the most contribution to greek culture and explain. Military strategy Art and architecture Literature Drama History Philosophy Government
*October 14, 2014*

**please check my english**

WRONG! It's D, B, D, B, D, A, D
*October 13, 2014*

**Next Big Trend?**

what are two trends that can be expected to see in American stores next year?
*October 13, 2014*

**Algebra help**

Given f(x) = 5x 1. What is f(2)? is it 9?
*October 13, 2014*

**Business Math**

Andres Michael bought a new boat. He took out a loan for $23,980 at 3.75% interest for 4 years. He made a $4,470 partial payment at 4 months and another partial payment of $3,180 at 9 months. How much is due at maturity?
*October 10, 2014*

**business math**

Andres Michael bought a new boat. He took out a loan for $23,980 at 3.75% interest for 4 years. He made a $4,470 partial payment at 4 months and another partial payment of $3,180 at 9 months. How much is due at maturity?
*October 10, 2014*

**physics**

An astronaut is traveling in a space vehicle moving at 0.520c relative to the Earth. The astronaut measures her pulse rate at 74.0 beats per minute. Signals generated by the astronaut's pulse are radioed to the Earth when the vehicle is moving in a direction perpendicular...
*October 10, 2014*

**math**

13 2/5 - 4 1/5 = 9 1/5
*October 10, 2014*