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Questions Asked on February 26, 2012

4. When the area in square units of an expanding circle is increasing twice as fast as its radius in linear units, the radius is
1. 1 answer
2. asked by Taeyeon
3. 22,118 views
1. If 3x^2+2xy+y2=2 then the value of dy/dx x = 1 isA. -2 B. 0 C. 2 D. 4 E. not defined
1. 4 answers
2. asked by Taeyeon
3. 20,643 views
Please someone show me how to work this one out?Suppose Caroline is a cinephile and buys only movie tickets. Caroline deposits
1. 2 answers
2. asked by nan
3. 14,190 views
3. For what value of k will x+k/x have a relative maximum at x = -2?A. -4 B. -2 C. 2 D. 4 E. None of these
1. 2 answers
2. asked by Taeyeon
3. 13,985 views
After skiding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of
1. 1 answer
2. asked by Angela
3. 8,664 views
A ball is thrown at an angle of 45 degrees to the ground. If the ball lands 90m away, what is the initial speed of the ball? I
1. 1 answer
2. asked by Anonymous
3. 8,320 views
A 3.00 kg stone is tied to a thin, light wire wrapped around the outer edge of the uniform 8.00 kg cylindrical pulley. The inner
1. 3 answers
2. asked by Brit
3. 6,057 views
a sample of gas occupies a volume at 73. 1 mL. As it expands, it does 135.0 J of work on its surroundings at a constant pressure
1. 1 answer
2. asked by danielle
3. 5,329 views
A boy whose mass is 40kg runs up a flight of 30 steps each 150mm high in 6seconds. Find the average power developed (take g as
1. 12 answers
2. asked by Igbekele
3. 4,549 views
The equilibrium constant for the reaction:2NO(g)+Br2(g)<==>2NOBr(g) Kc=1.3x10^-2 at 1000 Kelvin Calculate Kc for:
1. 4 answers
2. asked by Colin
3. 3,981 views
Give the formula for the conjugate base of each acid.a. HSO4- H2SO4- b. H3PO4 H4PO4 c. HPO42- H2PO42- d. HNO3 H2NO3
1. 2 answers
2. asked by krystal
3. 3,171 views
Solve for x if sin2x=cos(x+60 and x€ [-90,180].show all work details
1. 2 answers
2. asked by please help now
3. 2,835 views
You mix 55 mL of 1.00 M silver nitrate with 25 mL of 0.81 M sodium chloride. What mass of silver chloride should you form?
1. 1 answer
2. asked by salena patel
3. 2,822 views
5. A particle moves along the y – axis with velocity given by v(t)=tsine(t^2) for t>=0 .a. In which direction (up or down) is
1. 1 answer
2. asked by Taeyeon
3. 2,749 views
A ball is thrown at an angle of 45 degrees to the ground. If the ball lands 90 m away, what is the initial speed of the ball?
1. 1 answer
2. asked by Anonymous
3. 2,650 views
A student opened her math book and computed the sum of the numbers on two pages. Then, she turned to the next page and computed
1. 1 answer
2. asked by Jde
3. 2,598 views
In the reaction below:Increasing the concentration of Cl2 will _____ at equilibrium. HAVE NO EFFECT
1. 2 answers
2. asked by krystal
3. 2,596 views
The value of Kw increases with increasing temperature. Is the autoionization of water endothermic or exothermic?In thinking its
1. 2 answers
2. asked by L.Bianchessi
3. 2,571 views
the area of the first quadrant bounded by the y-axis, the line y=4-x, and the graph of y=x-cosx is approximately
1. 1 answer
2. asked by Alyssa
3. 2,569 views
Consider the curve defined by 2y^3+6X^2(y)- 12x^2 +6y=1 .a. Show that dy/dx= (4x-2xy)/(x^2+y^2+1) b. Write an equation of each
1. 3 answers
2. asked by Taeyeon
3. 2,380 views
A restaurant owner has a luncheon special that consists of a cup of soup, half of a sandwich, and a beverage. She wants to
1. 1 answer
2. asked by Jeremy
3. 2,304 views
A sled which has a mass of 45kg is sitting on a horizontal surface. A force of 120 N is applied to a rope attached to the front
1. 2 answers
2. asked by jo
3. 2,229 views
Jack Shellenkamp owns and manages a computer repair service, which had the following trial balance on December 31, 2011 (the end
1. 1 answer
2. asked by Will
3. 2,131 views
Derive the general heat conduction equation in cylindrical coordinates by applying the first law to the volume element.
1. 1 answer
2. asked by Farant
3. 2,129 views
1) Complete and balance the following chemical reactins:2HCI(aq)+Pb(NO3)2(aq)---> 2HI(aq)+K2SO3(s)---> Pb(NO3)2(aq)+2KCI(aq)--->
1. 3 answers
2. asked by melek
3. 2,025 views
3. how many lines of symmetry are in a 8-sided snowflake?10, 12, 8, 16 1. how many lines of symmetry are in a 6-sided snowflake?
1. 4 answers
2. asked by 12-year-old-poet
3. 2,009 views
A space probe is traveling in outer space with a momentum that has a magnitude of 4.99 x 107 kg·m/s. A retrorocket is fired to
1. 2 answers
2. asked by Angela
3. 2,008 views
A body of mass 20g appears to have a mass of 13g in oil and 12g in water what is the relative density of oil.
1. 4 answers
2. asked by Igbekele
3. 1,938 views
A mixture formed by adding 55.0 mL of a 1.5x10^-2 M HCl to 140 mL of 1.0x10^-2 M HI.How do you calculate the pH for this
1. 2 answers
2. asked by brad
3. 1,902 views
How many grams of PI3 could actually be produced from 250 g of I2 and excess phosphorous if the reaction gives a 98.5% yield?P4
1. 1 answer
2. asked by Anonymous
3. 1,893 views
Write expressions for other five trigonometric ratios for each acute angle:a. csc(theta 0) = a/b b. sec(beta B) = x+1/x-1, x not
1. 1 answer
2. asked by amber
3. 1,769 views
I had to perform an experiment for rate of reaction.The point of the experiment was to show how changes in reactant
1. 1 answer
2. asked by Hannah
3. 1,733 views
When 6-year old Melanie arrived home from school, she was the first to eat cookies from a freshly baked batch. When 8-year old
1. 4 answers
2. asked by Francie
3. 1,607 views
Look at the statement below.“All dogs are mammals.” Which of these is a logically equivalent statement? Answer A. All dogs
1. 1 answer
2. asked by Anonymous
3. 1,576 views
romeo and Juliet Act 1 scene 3 questions:1. what impression does the audience get of Juliet in this scene? 2.what impression
1. 2 answers
2. asked by patrik
3. 1,518 views
A solid rectangular block measure 0.100*0.080m*0.060m and floats freely in a liquid of density 1354kg/m^2 if the depth of liquid
1. 1 answer
2. asked by Igbekele
3. 1,418 views
A box which has a mass of 14kg is sliding along a horizontal surface with a velocity of 18m/s when it encounters a frictionless
1. 1 answer
2. asked by Rob
3. 1,416 views
What species is classified as an Arrhenius base?
1. 2 answers
2. asked by Christian
3. 1,385 views
If a farmer purchases a new tractor,is it included in the calculating of the GDP?
1. 1 answer
2. asked by lerato
3. 1,273 views
Bonjour!Dans un livre, j'ai lu cette phrase (je précise que l'auteur parle d'une situation présente aux États-Unis):
1. 3 answers
2. asked by green_heart
3. 1,269 views
A spring is mounted horizontally. A crate which has a mass of 8.5kg is pressed against the spring with a force of 350N. As a
1. 1 answer
2. asked by James
3. 1,251 views
Find the pH of mixture of acids.0.185 M in HCHO2 and 0.225 M in HC2H3O2 Im using an ice chart of weak acid and putting in strong
1. 4 answers
2. asked by L.Bianchessi
3. 1,240 views
Because of the Earth's rotation, a plumb bob does not hang exactly along a line directed to the center of the Earth. How much
1. 0 answers
2. asked by Bill
3. 1,235 views
A mass of 2.2kg is placed on a stiff vertical spring which has a spring constant of 950n/m. The object is then pressed against
1. 1 answer
2. asked by Rob
3. 1,223 views
A set of 50 data values has a mean of 27 and a variance of 16.I. Find the standard score (z) for a data value = 19. II. Find the
1. 1 answer
2. asked by Blackqueen
3. 1,218 views
Determine whether the system is consistent, inconsistent, or dependent.3x - 3y = -9 9x - 9y = -27
1. 1 answer
2. asked by Anonymous
3. 1,215 views
A particle is travelling with velocity (4i+5j)m/s. It undergoes an acceleration of magnitude 2.5m/s^2 in a direction given by
1. 1 answer
2. asked by Jat
3. 1,201 views
Robin cross- stitches bookmarks and wall hangings . A bookmark takes her 1 1/2 days, and a wall hanging takes her 4 days. Robin
1. 3 answers
2. asked by Carly
3. 1,201 views
30 percent of the members of a health club are joggers. 55 percent of the joggers are female, and 60 percent of the non-joggers
1. 0 answers
2. asked by Cassie
3. 1,166 views
calculate the pH of 20.00mL of 2.00 M HCl diluted to 0.500 L
1. 1 answer
2. asked by Colin
3. 1,158 views
What is a process that could cause an unconformity?
1. 1 answer
2. asked by Linda
3. 1,147 views
In its first month of operations, Cisler Company made three purchases of merchandise in the following sequence:(1) 300 units at
1. 1 answer
2. asked by Casey
3. 1,142 views
Roll 2 standard dice and add the numbers. whats the probability of getting a number Larger than 4 for the first time on the
1. 0 answers
2. asked by cheyanne
3. 1,136 views
Which is the conjugate base of the bicarbonate ion, HCO3-?CO3 2-
1. 1 answer
2. asked by krystal
3. 1,128 views
Reflective JournalAfter reading Chapter 1, reflect on how your perceptions of physical education have changed based on your
1. 1 answer
2. asked by teresa
3. 1,107 views
For the following items, mark the choice which is spelled incorrectly.Prolong Perpetuete Protract Continue
1. 1 answer
2. asked by Jasmine
3. 1,096 views
Suppose Caroline is a cinephile and buys only movie tickets. Caroline deposits $3000 in a bank acct that pays an annual interest
1. 2 answers
2. asked by nan
3. 1,088 views
Calculate the [OH-] for a solution in which [H+] is 1000 times greater than [OH-]?and will the final result be acidic, basic, or
1. 1 answer
2. asked by Colin
3. 1,064 views
Calculate the work required to lift a 20kg object from the floor to a height of 2 meters. Give your answer in Joules
1. 1 answer
2. asked by Darcie
3. 1,056 views
A particle p is initially at the point (2, 6) in relation to an origin O, and is moving with velocity (3i + j) m/s. It has a
1. 2 answers
2. asked by Jat
3. 1,045 views
if you have 380.0mL of water at 25.00 degrees Celsius and add 140mL of water at 95.00 degrees Celsius, what is the final
1. 2 answers
2. asked by danielle
3. 1,036 views
In a deck of 52 cards there are 13 hearts. If 3 are drawn from the deck, without replacement, what is the probability that all 3
1. 1 answer
2. asked by Jane
3. 1,018 views
According to Langston Hughes in "The Negro Artist and the Racial Mountain, what is the "mountain standing in the way of any true
1. 0 answers
2. asked by help
3. 1,017 views
Statement 1: “If she is stuck in traffic, then she is late.”Statement 2: “If she is late, then she is stuck in traffic.”
1. 2 answers
2. asked by Anonymous
3. 1,013 views
A 25kg crate is sitting at the bottom of an inclined plane. The inclined plane 12m long meets the horizontal at an angle of 15
1. 1 answer
2. asked by Rob
3. 1,011 views
A 4 ft spring measures 8 ft long after a mass weighing 8 pounds is attached to it. the medium through which the mass moves
1. 0 answers
2. asked by pam
3. 963 views
In parallelogram TRIG, m∠R = 2x + 19 and m∠G = 4x - 17.What is m∠T
1. 1 answer
2. asked by miguel
3. 929 views
12. A statistics student received a grade of 85 on a statistics midterm. If the corresponding zscore equaled +1.50, and the
1. 3 answers
2. asked by tim
3. 927 views
if the activation energy for a given compound is found to be 10 kJ/mol, with a frequency factor of 4.0x10^13 s-1, what is the
1. 2 answers
2. asked by hall
3. 918 views
An object of volume 4cm^3 is totally immersed in liquid of density 1030kg/m^3. Calculate the upthrust of liquid on the object.
1. 3 answers
2. asked by Igbekele
3. 906 views
Mrs wong wants to invest $50000 for 3 years.Simple interest of 5% p.a. for the first year, and then interest compounded monthly
1. 1 answer
2. asked by Nicole
3. 904 views
The number of calls received by a car towing service averages 21.6 per day (per 24-hourperiod). Find the probability that in a
1. 0 answers
2. asked by Rose Bud
3. 888 views
A student (m = 66 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a
1. 1 answer
2. asked by Angela
3. 886 views
How many milliliters of a 5.0 M H2SO4 stock solution would you need to prepare 132.0 mL of 0.21 M H2SO4?
1. 1 answer
2. asked by Anonymous
3. 872 views
How long will it take a motor 1500 watt motor to lift a 500kg elevator 30 meters? Give your answer in minutes.
1. 0 answers
2. asked by Darcie
3. 856 views
having problem solving(3-x)/(7-x)=4/(x-7)
1. 0 answers
2. asked by Lavern
3. 817 views
A car is sitting at the top of an inclined plane, which is 5.2 meters long and meets the horizontal at an angle of 12 degrees.
1. 1 answer
2. asked by joe
3. 808 views
Gemma is making necklaces.She needs 10 beads for each one. She has 64 beads altogether. how many necklaces can she make?
1. 3 answers
2. asked by james
3. 806 views
A mass of 45kg is sitting at the bottom of an incline plane which is 5.5m long has a coefficient of friction of .65 and which
1. 1 answer
2. asked by James
3. 805 views
Cocaine is a non-electrolyte that has a molecular weight of 303.4 g/mole. How many grams must be dissolved in 25.0 mL of
1. 1 answer
2. asked by Alyssa
3. 803 views
A ball of mass 8kg falls from rest from a height of 100m neglecting air resistance. Calculate its kinetic energy after falling a
1. 4 answers
2. asked by Igbekele
3. 799 views
A wooden cube of side 5cm floats in water 200cm^2 of its depth below the water surface and ats sides are vertical calculate the
1. 3 answers
2. asked by Igbekele
3. 799 views
If the coefficient of kinetic friction between tires and dry pavement is 0.800, what is the shortest distance in which an
1. 1 answer
2. asked by Jack
3. 797 views
what could you conclude about the two rock layers if paleontologists would find a trilobite fossil in a rock layer at the top of
1. 1 answer
2. asked by cassie
3. 797 views
Water is amphoteric (can act as an acid or a base).a. Complete the chemical equation that shows water acting as a base. H2O +
1. 1 answer
2. asked by krystal
3. 778 views
the specific heat of a certain type of metal is 0.128 J(grams per Celsius). What is the final temperature if 305J of heat is
1. 2 answers
2. asked by danielle
3. 774 views
Using the databases listed within the Ashford Online Library you will evaluate a research-based article from a peer reviewed
1. 1 answer
2. asked by teresa
3. 773 views
Suppose the moon were closer to Earth. How would the force of gravity between Earth and the moon be different?
1. 1 answer
2. asked by Cassie
3. 772 views
If very small concentrations of NaCl and AgNO3 are mixed, no precipitate forms. However, if large concentrations are mixed, a
1. 1 answer
2. asked by Sarah
3. 771 views
Ted put several different integers in order from least to greatest. He then put the same integers in order from greatest to
1. 1 answer
2. asked by Anonymous
3. 766 views
A boy whose mass is 40kg runs up a flight of 30 steps each 150mm high in 6seconds. Find the average power developed (take g as
1. 3 answers
2. asked by Igbekele
3. 763 views
x^2 + 9x + 20 over x^2 -25 divided by x +4 over x - 4How to do this really confusing i need to simplify the rational expression
1. 1 answer
2. asked by luis
3. 761 views
Potassium nitrate is made by adding potassium chloride to hydrogen nitrate in the presence of oxygen gas. Along with the
1. 1 answer
2. asked by mark
3. 759 views
A negatively charged balloon has 4.5 µC ofcharge. How many excess electrons are on this balloon? Answer in units of electrons
1. 0 answers
2. asked by ivan
3. 758 views
how long does it take for light from Jupiter to come to earth. for example tonight the planet Jupiter can be seen by the moon,
1. 1 answer
2. asked by jerry
3. 755 views
These are what i used.0.0375M sodium thiosulphate , 2.5% KI .47.2 ml copper sulphate solution. the average volume of Na2S2O3 is
1. 1 answer
2. asked by Sarah
3. 745 views
Verify the identities by transforming the left-hand side into the right-hand side. Show work.(tan^2X)/(1-cos^2x)= sec^2x HELP
1. 1 answer
2. asked by Carter
3. 744 views
1) The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the
1. 0 answers
2. asked by Hannah
3. 735 views
When using fraction strips, how do you know that two fractions are equivalent?
1. 1 answer
2. asked by Gloria
3. 733 views
A small cork with an excess charge of +7.0 µCis placed 0.16 m from another cork, which carries a charge of −3.2 µC. What is
1. 0 answers
2. asked by ivan
3. 719 views

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