Sunday

April 20, 2014

April 20, 2014

Total # Posts: 78

**math**

first im sorry I wrote the problem wrong and the problem is 4 1/2 minus 3 5/6 and my second problem is 9 minus 3 7/8?i don't understand even with the problem they showed which is..6 1/3 minus 1 2/5,that ended up being 6 5/15 minus 1 6/15,they crossed out the first 6 and ma...

**math**

Don't understand mr.bobpursley,someone please help me break this down

**math**

please,please help!im doing subtraction with renaming but don't understand.I have to estimate,then find the difference and write in simplest form.I just need help with two and may be able to do the rest on my own.6 and 1/3 minus 3 and 5/6 is the first one and 9 minus 3 and...

**Physics**

A 298.0 kg block of ice at 0 C is placed in a large lake. The temperature of the lake is just slightly higher than 0 C, and the ice melts. What is the entropy change of the ice (in kJ/K)? What is the entropy change of the lake (in kJ/K)? What is the entropy change of the "...

**Physics**

Consider hydrogen gas, H2, at 24.3°C. What percentage of hydrogen molecules have a speed within 1.00 m/s of the most probable speed?

**Physics**

The internal energy of a gas is 585 J. The gas is compressed adiabatically, and its volume decreases by 137 cm3. If the pressure applied on the gas during compression is 2.65 atm, what is the internal energy of the gas after the adiabatic compression?

**Physics**

The internal energy of a gas is 585 J. The gas is compressed adiabatically, and its volume decreases by 137 cm3. If the pressure applied on the gas during compression is 2.65 atm, what is the internal energy of the gas after the adiabatic compression?

**Physics**

Thank you SO much!!!

**Physics**

On planet X, the alien residents use a temperature scale in which they define 0 degrees X to be the melting point of nitrogen and 100 degrees X to be the boiling point of nitrogen. What temperature difference in X degrees does a temperature change of 1 C degree correspond to? ...

**College Physics**

A wooden bridge crossing a canyon consists of a plank with length density λ = 2.25 kg/m suspended at h = 10.89 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as shown in the figu...

**College Physics**

A uniform rod of mass M = 437.0 g and length L = 37.1 cm stands vertically on a horizontal table. It is released from rest to fall. A)Which of the following forces are acting on the rod? B)Calculate the angular speed of the rod as it makes an angle θ = 45° with respec...

**College Physics**

A force, F = (2x + 3y) N, is applied to an object at a point whose position vector with respect to the pivot point is r = (5x + 4y + 2z) m. Calculate the torque (in units on Nm) created by the force about that pivot point.

**College Physics**

A Major League fastball is thrown at 92.1 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 61.4 ft, how many full turns does the ball make between release and catch? Neglect any effect of gra...

**Algebra**

Slope is rise over run, so plot a point at (-5, -5) and go up 2, over to the right 3. Then from (-5, -5) go down 2 and left 3

**math 9**

You are welcome!

**math 9**

All you do to check x is to take the y answer and plug it into the top equation and solve for x

**math 9**

It's C. You solve the bottom equation for x, then you plug that into where the x is on the top equation. 3(1-5y)-2y=6 Solve for y, and then for x

**College Physics**

A 27.7-cm-by-27.7-cm checkerboard has a mass of 103.1 g. There are four 27.7-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of the checkerboard, where is the center of mass of the checkerboard-checkers s...

**College Physics**

A fire hose 4.79 cm in diameter is capable of spraying water at a velocity of 17.1 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary?

**College Chem**

thank you!!

**College Chem**

Oxygen gas has a Henry's law constant of 1.66*10^-6 M/mm Hg at 40 degree C when dissolving in water. If the total pressure of gass (O2 gas plus water vapor) over water is 1.0 atm, what is the concentration of O2 in the water in grams per milliliter? Pressure of the water v...

**College Physics**

Tarzan swings on a vine from a cliff to rescue Jane, who is standing on the ground surrounded by snakes. His plan is to push off the cliff, grab Jane at the lowest point of his swing, and carry them both to the safety of a nearby tree (see figure). Tarzan's mass is 76.1 kg...

**College Physics**

Although they don’t have mass, photons—traveling at the speed of light—have momentum. Space travel experts have thought of capitalizing on this fact by constructing solar sails—large sheets of material that would work by reflecting photons. Since the moment...

**College Physics**

Thank you soooo much!!!

**College Physics**

The electron-volt, eV, is a unit of energy (1eV = 1.602 ·10–19 J, 1 MeV = 1.602 ·10–13 J). Since the unit of momentum is an energy unit divided by a velocity unit, nuclear physicists usually specify momenta of nuclei in units of MeV/c, where c is the sp...

**what is a good online dictionary ?**

Thanks

**what is a good online dictionary ?**

I have to do vocabulary for my social studies teacher but not all of the words are in the glossary of the text book

**Math**

How would you solve these compound inequalities? 1. -1<4x-3<5 2. 3a-5<=-2 OR 3a-5>=13 3. -y-2>6 OR 4y+8<=20 4. 3<=-2x+1<=9

**8th grade reading ! please help !**

Is there anything else because my cousin josh just stole that one and started writing his paragraph ?

**8th grade reading ! please help !**

Thanks !

**8th grade reading ! please help !**

I have a presentation due tomorrow on a connection that I made with the Anne Frank Remembered novel but I cant think of an item that I can connect to the novel.. I need help. It has to be one paragraph about the connection and it can be a song,poem,or object. Please help me !

**Physics**

I have tried the a = F/m, and it doesn't work. Also, the 2 top equations you wrote, I'm not too sure on how to use them.. I know the 53.9 km/hr is 14.97 m/s

**Physics**

A train has a mass of 5.27E+6 kg and is moving at 53.9 km/hr. The engineer applies the brakes, which results in a net backward force of 1.30E+6 N on the train. The brakes are held on for 25.6 s. What is the new speed of the train? How far does it travel during this period?

**pre algebra**

how many ways can you make 45 cents with pennies ,dimes, nickels, and quarters?

**Math/algebra **

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism?

**edu**

a major goal of any curriculum is to enable children to become a.divergent thinkers b.mature adults c. self- focused d.humanists I think a am i correct

**trigonometry**

Calculate the perimeter of the inscribed square given that the radius of the circle is 3 feet.

**Chemistry**

Do I add all of the q's to get the final answer? Also, the problem does not give the "specific heat" or "mass" of steam. It only gives heat capacity of steam and water.

**Chemistry**

18.0 g of liquid water is initially at 0 C. How much heat, in kJ, must be added to transform this into 18.0 g of steam at 200 C? The heat capacity of liquid water is 75.3 J/mol C. The heat capacity of steam is 37.4 J/mol C. The heat of vaporization is 40.65 kJ/mol.

**Chemistry**

If 27.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 32.40 mL of 0.185 M HCl, what is the concentration of the Ca(OH)2 solution?

**Life orientation**

I would think that alcohol abuse would b an appropriate answer

**Psychology**

1. One of the addictive aspects of alcohol can be found in the difference between actual effects and perceived effects. Although alcohol is a depressant, many claim that it: (a)causes intoxication. (b)results is slurred speech. (c)produces feelings of happiness. (d)reduces mus...

**Chemistry**

what is the sp hybrid orbitals for carbon molecules in CH3-C=C-CH2OH?

**physic**

A copper sheet of thickness 2.49 mm is bonded to a steel sheet of thickness 1.51 mm. The outside surface of the copper sheet is held at a temperature of 100.0°C and the steel sheet at 24.1°C.

**4th grade**

spider plants,tulips,and potatoes can grow seeds.how are their otherways of ruducing alike?

**5th grade**

327,676

**math**

Karla borrowed $750 at 12 percent for one year. She paid a $20 processing fee. The interest paid will be $95.00, $92.50, or $90.00 Thus, the total finance charge (the interest plus the processing fee) will be? $115.00, $112.50, or $110.00 ? Therefore, to the nearest tenth, the...

**physics**

A Box (15.0 kg) is pulled up a 37 degree ramp with a force of 295 N. The frictional force acting on the block is 56.0 N. If Box travels 12.0 m up the ramp, determine the change in Box’s PEgrav.

**physics**

The speed limit in a school zone is 40.0 km/hr. A driver traveling at this speed sees a child run into the road 14 m ahead of the car. The driver applies the brakes and the car slows at a uniform rate of 8.3 m/s^2. If the driver's reaction time is 0.27 sec, what distance d...

**english**

Legal systems are flawed-that is, they have problems. What are some problems with 1935 Alabama laws and courtroom prcedures?

**algebra 2**

The are of a square can be represented by the polynomial 4x^2-16x+16. Find the length of a side of the square in terms of x.

**math**

ernesto spent a total of 64$ for a pair of jeans and a shirt. the jeans cost 6$ more than the shirt. how much did the jeans cost?

**Social Studies**

D. because they accountable to the public

**Social Studies**

Interest groups are accountable to a. other interest groups. b. their members. c. the voters. d. or both b and c.

**English**

Question on "Brave New World": What does this quote mean--"Was and will make me ill. I take a gramme and only am." Thanks for your help!

**Business**

What are the consequences of illegality in realtion to contract law?

**Physics**

a girl touches a Van de graff generator and slowly moves away from the dome why when moving back to touch it again she recives a strong shock why ?

**Physics**

Touching a Van de graff generator and slowly moves away from the dome why he touches it again he recives a stron shock why ?

**English**

Would the real monster in Mary Shelley's Frankenstein be Victor Frankenstein because he just leaves the monster to care for himself and wants nothing to do with it? or someone else?

**English**

Who does the monster care about in Mary Shelley's "Frankenstein"?

**Social Studies**

What factor determines the location of each voters polling place?

**Social Studies**

Why should votes participate in the primary process?

**Social Studies**

Since political parties are not mentioned in the Constitution, why did they develop se quickly in the new nation?

**reading**

I agree reading the book will help, I forgot the book at school. I need the answers to my question to help me complete the homework.

**Reading**

Need information on the character of Mike Taylor in the book "The Place of Lions" by Eric Campbell. Physical Appearance, Actions, Thoughts and Words, Other characters thoughts and feels, and aughtor tells directectly. Thank you.

**eth 125**

Subordinate group define

**Chemistry**

i don't know lol

**NHD project**

I am doing a National History Day project this year on the topic of "From Conflict to Compromise" and my thesis statement has to be turned in tomorrow. Could someone check it and make sure it is arguable and true? The inequality of women caused them to become activis...

**Grammar**

Thank you!

**Grammar**

I didn't write it. It was on a worksheet. But I do have to fix it. I already went to that site and if I were to change it to: The man wearing the suit was her former fiance. would that make it a participial phrase?

**Grammar**

Is this an example of a participial phrase? The man in the suit was her former fiance.

**English**

This is a homework question, but one I have been curious about since I could pick up a book. Why are there brackets around random words in a quote? For example on book reviews there are brackets around one or a few words and I can't understand why.

**science**

what is the seasonal temperature and the rainfall amount for China northeast temperate forest, for all four seasons? Since this is not my area of expertise, I searched Google under the key words "temperature rainfall China" to get these possible sources: (Broken Link...

**science**

What are the bamboo adaptaions for northeast China temperate forest. I could only find two facts and I need 5, plus a resource.

**math**

i really need to know what.... 4 to the power of 77 is... 477 = 2.28360 x 1046 according to my calculator. i dont know how to do factors with two digit numbers. Please click Post a New Question, put Math in the subject line, and post your question. It would help if you gave us...

**Math**

To be written on the axis of a graph,suggest two quantities that might be described by the statement. 1) When one quantity decreases, the other decreases. 2) When one quantity decreases, the other increases. 3) When one quatity increases, the other decreases. 4) Both quantitie...

**Biology**

What is cytoplasmic strand? and can you give me a website wherein I can find informations pertaining to plant and animal cell long chains of protiens that secure the neucleus in the middle of the cell, as well as performing other functions during mitosis and maintaining cell r...

**Chemistry**

1. The standard heat of formation of glucose and lactic acid are -1274.45 and -694.04 kJ/mole, respectively. The molar heat capacity of the two compounds are 218.86 and 127.6 J/(mol)K a.) What is the total heat of reaction at 25 degree Celsius for the formation of lactic acid ...

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