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Questions Asked on February 21, 2012

(1) Dervive an expression for the maximum speed of v of electron in terms of V,me, and e.(2) The electron is replaced with a
1. 2 answers
2. asked by monica
3. 608 views
Thank you very much. Here is a summary I need to prepare for tomorrow. I also need to rephrase the last sentence. Thank you very
1. 1 answer
2. asked by Henry2
3. 1,152 views
Could you please check this dialogue and tell me if the expressions are commonly used in American English? Would you have
1. 1 answer
2. asked by Henry2
3. 517 views
In the decomposition reaction 2 KCIO3 (s) --> 2KCI (s)+3O2(g),what volume of O2 gas at STP would be produced from 3.66 of KCIO3
1. 1 answer
2. asked by Sean Z.
3. 896 views
So, they give me a word equation, where I am suppose to try and create a balanced equation for it.Ammonium phosphate and barium
1. 2 answers
2. asked by Matthew
3. 1,345 views
In the decomposition reaction 2 KCIO3 (s) --> 2KCI (s)+3O2(g),what volume of O2 gas at STP would be produced from 3.66 of KCIO3
1. 1 answer
2. asked by Sean Z.
3. 477 views
1) Given this data in a study on how the rate of a reaction was affected by the concentration of the reactantsInitial Rate, RUN
1. 1 answer
2. asked by Hannah
3. 1,339 views
A block is suspended from the end of a spring. An external force holds the block so that initially the spring is not stretched
1. 1 answer
2. asked by Mary
3. 1,038 views
A wheel with radius 4 cm is being pushed up a ramp at a rate of 8 cm per second. The ramp is 760 cm long, and 250 cm tall at the
1. 0 answers
2. asked by Anonymous
3. 740 views
ms. sue one my really good english friend also writing essay on theme of a few notes for orpheus u please be able to help him
1. 2 answers
2. asked by Mohammad
3. 477 views
Is this quote a metaphor?"That's a bright direction, there's a glowing there." In context it seems like a metaphor since the
1. 3 answers
2. asked by Joshua
3. 961 views
according to a survey of 800 students, about 3/4 of them chose pizza as their favorite food. Of those who chose pizza, 1/2 liked
1. 1 answer
2. asked by Anonymous
3. 466 views
the diving club offers 4 beginning diving classes each day . each class has room for 6 people . how many people can take classes
1. 2 answers
2. asked by ahoids
3. 1,094 views
Hi Ms. Sue I’m Aaron and I’m Mohammad’s friend, I helped Mohammad edit his, and I’m also doing a theme on the story “A
1. 4 answers
2. asked by Aaron
3. 641 views
Firm A has $10,000 in assets entirely financed with equity. Firm B also has $10,000 in assets, but these assets are financed by
1. 0 answers
2. asked by Jerry
3. 675 views
There are nine customers waiting for their local SuperDuperMegaMart store to open on a big shopping day. In how many ways can
1. 1 answer
2. asked by Karen
3. 373 views
The resistance of a 395 m long aluminum rod is 3580 .A. Find the cross-sectional area of the rod mm2 B. Find the current in the
1. 0 answers
2. asked by Anonymous
3. 1,045 views
Since cot x = cos x / sin x, if cot x = 1/2, with the angle x in the first quadrant,then cos x = 1 and sin x = 2 (1) State true
1. 1 answer
2. asked by Anonymous
3. 571 views
Tina has $600 in her bank account when she starts withdrawing $50 a week. What is the slope in this problem?
1. 0 answers
2. asked by Tori
3. 428 views
The Washington Monument is the tallest structure in Washington D.C. At the same time the monument casts a shadow that is about
1. 5 answers
2. asked by Eleanna
3. 1,777 views
Big Sky Mining Company must install $1.5 million of new machinery in its' Nevada mine. It can obtain a bank loan for 100% of the
1. 1 answer
2. asked by Peaz
3. 687 views
Darius uses the shadow method to estimate the height of a flagpole. He finds that a 5 foot stick casts a 4 foot shadow. At the
1. 1 answer
2. asked by Lizette
3. 1,157 views
What does Ca^(2+) + Na2CO3 create?What does Ba^(2+) + Na2CO3 create? What does Ba^(2+) + Na2CrO4 create? Thank You
1. 1 answer
2. asked by Wally
3. 560 views
What is $350.812 to the nearest cent?Is it a) $350.800 b) $350.812 c) $350.81 d) $350.82 e) None of the above
1. 7 answers
2. asked by Anonymous
3. 544 views
A sensor light installed on the edge of a home can detect motion for a distance of 50ft. in front and with a range of motion of
1. 2 answers
2. asked by melissa
3. 3,956 views
Transform:log3^4= log(3/4)=
1. 1 answer
2. asked by Harry
3. 345 views
Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated,
1. 0 answers
2. asked by victoria
3. 861 views
A water-skier lets go of the tow rope upon leaving the end of a jump ramp at a speed of v1 = 14.7 m/s. the skier has a speed of
1. 1 answer
2. asked by Sam
3. 912 views
find f'(x)-4x^2 lnx
1. 1 answer
2. asked by carlton
3. 520 views
i was just wondering if there was a difference between infinty and indetrminant. my freind said there the same thing. But i
1. 1 answer
2. asked by Pria
3. 524 views
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed,
1. 0 answers
2. asked by Riley
3. 591 views
how to find the volume when two figures are used?
1. 0 answers
2. asked by Pat
3. 263 views
A satellite in a circular orbit 879.4 mi above the earth makes one complete orbit every 83.42min. What is its linear velocity?
1. 1 answer
2. asked by andrea
3. 715 views
wat is the ans of this solutions?y=sin^4x cos4x? ^
1. 1 answer
2. asked by andrea
3. 303 views
in electrolysis how is conductivity affected by the molecular mass of the solution
1. 0 answers
2. asked by physics123
3. 275 views
3.The Theory of the Firm document, the Friedman article, and the information in chapter 4 argue that the main goal of a firm in
1. 1 answer
2. asked by Anonymous
3. 479 views
Rules:Determine wether the two expressions are equivalent.If so,tell what property is applied.If not, explain why.1)18 x 1 and
1. 1 answer
2. asked by casey
3. 514 views
For this problem, assume that you are to pick 3 cars from the motor pool, which contains 6 subcompact cars, 6 compact cars, and
1. 1 answer
2. asked by victoria
3. 875 views
Two resistors connected in series have an equivalent resistance of 790.6 . When they are connected in parallel, their equivalent
1. 0 answers
2. asked by Anonymous
3. 461 views
Which pairs of numbers have a least common multiple of 12?a)1 and 3; b)4 and 6; c) 8 and 24; d)24 and 36
1. 1 answer
2. asked by Mia
3. 676 views
-.30x+.20y +.25z =0.20x -.40y +.05z =0 .10x +.20y -.30z =0 x=? y=? z=?
1. 0 answers
2. asked by Exhausted
3. 630 views
A neighborhood has provided trash cans to residents to dispose of their waste. All trash cans have a diameter of 1.5 meters and
1. 1 answer
2. asked by Anonymous
3. 471 views
The small pipe has a radius of 18 feet and a height of 21 feet while the large pipe has a height of 28 feet. What is the volume
1. 1 answer
2. asked by Anonymous
3. 400 views
For the following reaction, Kp = 3.5 104 at 1495 K.H2(g) + Br2(g) 2 HBr(g) What is the value of Kp for the following reactions
1. 3 answers
2. asked by Elizabeth
3. 11,147 views
A 820-{\rm kg} sports car collides into the rear end of a 2700-{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes
1. 1 answer
2. asked by Ben
3. 629 views
A 820-{\rm kg} sports car collides into the rear end of a 2700-{\rm kg} SUV stopped at a red light. The bumpers lock, the brakes
1. 0 answers
2. asked by Ben
3. 571 views
For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are
1. 1 answer
2. asked by Elizabeth
3. 1,664 views
At 2200°C, K = 0.050 for the following reaction.N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2
1. 1 answer
2. asked by Elizabeth
3. 939 views
sin^2x+sin^2tan^2x=tan^2x
1. 1 answer
2. asked by becca
3. 378 views
At a particular temperature, K = 2.0 10-6 mol/L for the following reaction.2 CO2(g) 2 CO(g) + O2(g) If 1.8 mol CO2 is initially
1. 1 answer
2. asked by Elizabeth
3. 600 views
f someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation =
1. 1 answer
2. asked by Annie
3. 1,090 views
The equilibrium constant Kp for the reaction below at 700°C is 0.76 atm.CCl4(g) C(s) + 2 Cl2(g) Determine the initial pressure
1. 1 answer
2. asked by Elizabeth
3. 802 views
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the
1. 1 answer
2. asked by Eliazbeth
3. 541 views
Consider the reaction below.3 O2(g) --> 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a
1. 1 answer
2. asked by Elizabeth
3. 1,413 views
A crane is holding a bloc of metal of 10 000kg. If the crane's arm weights 1000kg and is 10,0m long, what is the tension in
1. 0 answers
2. asked by Raf
3. 1,012 views
A total of 31.3 ml of 0.15 N NaOH was required to reach a phenolphthalein endpoint in titrating 6.00 g of vinegar. Calculate the
1. 0 answers
2. asked by Eliazbeth
3. 437 views
csc(theta)= 1/xsec(theta)= 1/ sqrt(1-x^2) cot(theta)= sqrt(1-x^2)/x What are these equations used for in real life matters or in
1. 1 answer
2. asked by Maria
3. 416 views
A bicyclist travels 20 miles per hour. How long would it take the cyclist to finish a 120 mile race?
1. 3 answers
2. asked by NeedHelpMath
3. 473 views
A ball is thrown at a rate of 25m/s. The ball travels 138 meters. How long does it take the ball from start to end?
1. 1 answer
2. asked by jorge
3. 379 views
it is 6;45am how many hours and minutes until 10;38pm
1. 1 answer
2. asked by Anonymous
3. 401 views
A person travels 32 meters,turns right & travels 34 more meters. It took 3 minutes. What is her speed?
1. 1 answer
2. asked by HELP!!!
3. 832 views
-.30x+.20y +.25z =0.20x -.40y +.05z =0 .10x +.20y -.30z =0 x=? y=? z=?
1. 1 answer
2. asked by Exhausted
3. 682 views
The efficiency of a pulley system is 81 percent. The pulleys are used to raise a mass of 85 kg to a height of 8.5 m. The
1. 1 answer
2. asked by Anonymous
3. 580 views
Two blocks are positioned as shown below. block A has a mass of 15 kg and hangs on one end of a cable that passes over a
1. 1 answer
2. asked by Eastern Illinois University
3. 1,017 views
How many hours are in x weeks?X/168 24x/7 7x/24 168x
1. 1 answer
2. asked by Amy
3. 352 views
Two blocks are positioned as shown below. block A has a mass of 15 kg and hangs on one end of a cable that passes over a
1. 0 answers
2. asked by Eastern Illinois University
3. 520 views
How do you write the chemical equation for neutralization of nitric acid, HNO3, with magnesium hydroxide, Mg (OH)2, first with
1. 1 answer
2. asked by Holly
3. 2,319 views
Among coffee drinkers, men drink a mean of 2.8 cups per day with a standard deviation of 0.5 cups. Assume the number of drinking
1. 0 answers
2. asked by Bri
3. 532 views
On June 9, 1988, Sergei Bubka broke the world pole-vaulting record for the 8th time in four years by attaining a height of 6.14
1. 0 answers
2. asked by Anonymous
3. 548 views
The sponosor of a local soccer tournament is responsible for writting an article for the local paper announcing the 1st, 2nd,
1. 0 answers
2. asked by tim
3. 459 views
Which nutrient functions BOTH as an enzymatic cofactor and as a stabilizer of ribosomes and nucleic acids?a) potassium b)
1. 0 answers
2. asked by tom
3. 754 views
had to perform an experiment for the freezing point depression in which we had to determine the frezzing points of water as a
1. 1 answer
2. asked by Hannah
3. 547 views
A baseball is thrown vertically upward (assumed to be the positive direction) with a speed of 19.3 m/s from a height of 1.18 m.H
1. 1 answer
2. asked by Anonymous
3. 543 views
Joe's living room is a rectangle and measures 15 ft by 27 ft. Using a scale of 1 in. = 3ft. How could I sketch it and show both
1. 1 answer
2. asked by snoop
3. 677 views
wo packages at UPS start sliding down the ramp shown in the figure. Package A has a mass of 4.50 and a coefficient of kinetic
1. 1 answer
2. asked by jonathan
3. 759 views
Regulation of an enzyme's activity occursa) before the enzyme is produced b) during the production of the enzyme. c) when the
1. 0 answers
2. asked by chris
3. 688 views
if z(t) = 60 * 1.03^t, find t when z(t) = 144
1. 1 answer
2. asked by Bobby
3. 316 views
how does the american medical association describe the diease of alcoholism and drug dependence? explain what these terms mean
1. 1 answer
2. asked by michael
3. 437 views
WHAT IS IT? Speech on the ways the concept of JOURNEY is expressed throughout Rabbit Proof Fence and two other related texts of
1. 1 answer
2. asked by Jayden
3. 719 views
Consider the following reaction:CH3X + Y --> CH3Y + X At 25ºC, the following two experiments were run, yielding the following
1. 0 answers
2. asked by Mariel
3. 745 views
2L of 6M HCl
1. 1 answer
2. asked by cindy
3. 1,713 views
Simplify #3:[cosx-sin(90-x)sinx]/[cosx-cos(180-x)tanx] = [cosx-(sin90cosx-cos90sinx)sinx]/[cosx-(cos180cosx+sinx180sinx)tanx] =
1. 1 answer
2. asked by Anonymous
3. 1,052 views
What is a number one reason for me as student majoring in psychology to learning about experimental and non experimental
1. 2 answers
2. asked by Sharon
3. 467 views
An upward force of 35 N is applied via a string to lift a ball with a mass of 2.1 kg.(a) What is the net force acting upon the
1. 2 answers
2. asked by Mina
3. 1,515 views
An upward force of 35 N is applied via a string to lift a ball with a mass of 2.1 kg.(a) What is the net force acting upon the
1. 1 answer
2. asked by Mina
3. 1,273 views
Sand is poured onto a level piece of ground at the rate of 0.25 m^3/min and forms a conical pile whose height is equal to its
1. 3 answers
2. asked by help
3. 825 views
solve the elimination method for3x+7y=-32 7x+3y=-8
1. 2 answers
2. asked by felicia
3. 565 views
1. An airplane travels 720 mi/hr. How far will it travel in 2 hrs?2. A ball rolls across a floor at 5 meters per sec. How long
1. 1 answer
2. asked by Anonymous
3. 496 views
I really need help on this, please! I've been reading my book for an hour and found no answer. Ok so here it is:Sumer lacked
1. 3 answers
2. asked by Elaina
3. 430 views
why dna replication necessary to life? i think it because it carry genetic information?
1. 0 answers
2. asked by Shreya
3. 981 views
For 0.06697mol / 0.1kg = 0.6697 mol/kg does my answer have the correct amount of sig figs?Same for 0.1004mol / 0.1kg =
1. 1 answer
2. asked by Hannah
3. 408 views
x=3y+2
1. 0 answers
2. asked by Wanda
3. 271 views
I have to find the calculation of Van't Hoff factor "i" for NaCl and sucrose. The directions say to use the equationdelta Tf =
1. 6 answers
2. asked by Hannah
3. 1,208 views
A solid disk with a mass of 100kg and a radius of 0.2m, turns clockwise through an angular displacement 10 rad when starting
1. 1 answer
2. asked by Brittany
3. 630 views
An alien rocketship is traveling at a speed of 2,500,000 feet per minute. At this speed, how many miles will it travel in 1
1. 1 answer
2. asked by Harry
3. 355 views
For the reaction given below, the frequency factor A is 8.7 multiplied by 1012 s-1 and the activation energy is 63 kJ/mol.NO(g)
1. 1 answer
2. asked by Tanyo
3. 707 views
For the reaction given below, the frequency factor A is 8.7 multiplied by 1012 s-1 and the activation energy is 63 kJ/mol.NO(g)
1. 1 answer
2. asked by Tanyo
3. 965 views
Calculate the freezing point depression of an aqueous solution prepared by mixing 22.0 g C6H12O6, with 600 ml of water
1. 1 answer
2. asked by Kristen
3. 522 views
Find the amount of CuSO4.5H2O needed to prepare 500 mL of 0.25 M solution.
1. 1 answer
2. asked by Sarah
3. 1,151 views
I am having trouble generating a data set with 30 values for a given mean (21000), median (5000) and mode (7000). Please help!
1. 0 answers
2. asked by Vova
3. 349 views

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