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January 2011
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Most Popular Questions

Suppose a 6ft. man is 10 ft. away from a 24 ft. tall lamp post. If the person is moving away from the lamp post at at rate of 2
1. 3 answers
2. asked by Anonymous
3. 178,825 views
Let f be a differentiable function such that f(3) = 2 and f'(3) = 5. If the tangent line to the graph of f at x = 3 is used to
1. 3 answers
2. asked by Matt
3. 38,008 views
write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water
1. 7 answers
2. asked by Kristin
3. 35,712 views
) A batter hits a baseball so that it leaves the bat at speedVo = 37.0m/s at an angle ao = 53.1°, at a location where g = 9.80
1. 4 answers
2. asked by hehe
3. 27,248 views
I'm stuck on what to write for freedom similes and metaphors? help? Thanks!
1. 51 answers
2. asked by Skye
3. 26,898 views
Classify the possible combinations of signs for a reaction's ∆H and ∆S values by the resulting spontaneity.A) Spontaneous as
1. 13 answers
2. asked by Jessica
3. 26,349 views
The speed of light is 3.00x 10^8 m/s . How fast is this in miles per hour (miles/h)? Use the conversion . 1mile =1610m
1. 5 answers
2. asked by Okoye
3. 26,134 views
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 402 N and F2 = 364 N.
1. 7 answers
2. asked by Dani
3. 24,791 views
Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction:2 NO(g) + O2(g) → 2 NO2(g),
1. 3 answers
2. asked by Amber
3. 23,966 views
A ball is thrown straight down from the top of a 220-foot building with an initial velocity of -22 feet per second. What is its
1. 6 answers
2. asked by Susana
3. 21,942 views
1)How many protons and electrons are in a sulfate ion SO4^2- ?I know the answer is 48 protons and 50 electrons but i do not know
1. 13 answers
2. asked by Hannah
3. 21,872 views
What does residence phone number mean? does it mean like the house number of someone?
1. 10 answers
2. asked by Anonymous
3. 21,354 views
The solubility of KI is 50 g in 100 g of H2O at 20 ?C. If 110 grams of KI are added to 200 grams of H2O, what would happen?
1. 2 answers
2. asked by Glo
3. 20,460 views
The function f is continuous on the closed interval [0,2] and has values that are given in the table belowx = 0| 1 | 2
1. 1 answer
2. asked by Joan
3. 20,100 views
Which angle between 0° and 360° has the same cosine as the angle 58°?give your answer as an integer. how do i do this please?
1. 9 answers
2. asked by susan
3. 20,063 views
A triangle has side lengths of 18 cm, 80 cm, and 81 cm. Classify it as acute, obtuse, or right
1. 18 answers
2. asked by Cindy
3. 19,309 views
A 3.5 kg block is pushed along a horizontal floor by a force of magnitude 15 N at an angle è = 40° with the horizontal. The
1. 4 answers
2. asked by Don
3. 19,016 views
Where should commas be placed?Combine flour shortening pecans and cold water to make a tasty pie crust.
1. 26 answers
2. asked by Mandy
3. 18,889 views
Many power plants produce energy by burning carbon-based fuels, which also produces CO2. CO2 is a greenhouse gas, so
1. 24 answers
2. asked by Harold
3. 18,828 views
Joe Henry's machine shop uses 2,500 brackets during the course of a year. These brackets are purchased from a supplier 90 miles
1. 2 answers
2. asked by Jeff
3. 18,518 views
Ammonia chemically reacts with oxygen gas to produce nitric oxide and water .What mass of ammonia is consumed by the reaction of
1. 1 answer
2. asked by Anonymous
3. 18,457 views
when a 2.50 kg object is hung vertically on a certain light spring described by hookes law the spring stretches 2.76 cm. A) what
1. 3 answers
2. asked by joe
3. 18,342 views
The radius r of a sphere is increasing at the uniform rate of 0.3 inches per second. At the instant when the surface area S
1. 6 answers
2. asked by Tim
3. 17,947 views
1. Let (-7, 4) be a point on the terminal side of (theta). Find the exact values of sin(theta), csc(theta), and cot(theta).2.
1. 30 answers
2. asked by Kandee Johnson
3. 17,918 views
Part ACalculate the standard enthalpy change for the reaction 2A+B --->2C +2D Use the following data: Substance Delta H(kJ/mol)
1. 6 answers
2. asked by tina
3. 17,805 views
A sports car moving at constant speed travels 120 m in 5.1 s. If it then brakes and comes to a stop in 4.0 s, what is its
1. 3 answers
2. asked by Hal
3. 17,724 views
If a rock is thrown upward on the planet Mars with a velocity of 17 m/s, its height (in meters) after t seconds is given by H =
1. 1 answer
2. asked by Katrina
3. 16,903 views
A bike first accelerates from 0.0 m/s to 5.0 m/s in 4.5 s, then continues at this constant speed for another 4.5 s. What is the
1. 9 answers
2. asked by lindsey
3. 16,723 views
You are traveling on an airplane. The velocity of the plane with respect to the air is 180 m/s due east. The velocity of the air
1. 3 answers
2. asked by aaa
3. 16,503 views
The radius of a circle is decreasing at a constant rate of 0.1 centimeters per second. In terms of the circumference C, what is
1. 1 answer
2. asked by Naz
3. 16,494 views
A 3.1-kilogram gun initially at rest is free to move. When a 0.015-kilogram bullet leaves the gun with a speed of 500. meters
1. 9 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 16,415 views
The sides and diagonal of the rectangle above are strictly increasing with time. At the instant when x=4 and y=3, dx/dt=dz/dt
1. 3 answers
2. asked by Repost
3. 16,251 views
A stone is dropped from the upper observation deck of a tower, 200 m above the ground. (Assume g = 9.8 m/s^2.)a)Find the
1. 2 answers
2. asked by John
3. 15,716 views
An object with mass m1=5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley
1. 4 answers
2. asked by Dee
3. 15,646 views
a boat leaves a dock at 2:00 pm and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h
1. 4 answers
2. asked by LALA
3. 15,418 views
If θ is an angle in standard position and its terminal side passes through the point (20,-21), find the exact value of sec(θ).
1. 4 answers
2. asked by Anonymous
3. 15,368 views
I need to identify the subject, verb, and any complements (direct object, indirect object, subject complement, objective
1. 16 answers
2. asked by Eddie
3. 15,264 views
Given the following equation:2KClO3---> 2KCl+3O2 How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?
1. 6 answers
2. asked by Nick
3. 15,137 views
A driver of a car going 90.0km/h suddenly sees the lights of a barrier 40.0 metres ahead. It takes the driver 0.75 seconds
1. 1 answer
2. asked by Steph
3. 14,847 views
Find two numbers the exact answer is between.3 X 567
1. 29 answers
2. asked by andrew
3. 14,755 views
A parcel delivery service will deliver a package only if the length plus the girth (distance around, taken perpendicular to the
1. 1 answer
2. asked by Anonymous
3. 14,692 views
A lovesick lad wants to throw a bag of candy and love notes into the open window of his girlfriend's bedroom 10 m above.
1. 3 answers
2. asked by Jacqueline
3. 14,596 views
A 1200 kg car pushes a 2100 kg truck that has a dead battery to the right. When the driver steps on the accelerator, the drive
1. 1 answer
2. asked by Help Physics college
3. 14,571 views
IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x- score that corresponds to
1. 4 answers
2. asked by chalulu
3. 14,424 views
A pile of 108 identical books has a mass of 30 kg.Find (a)the mass of 150 books and (b)the number of books that has a mass of 20
1. 19 answers
2. asked by Julie Charmster
3. 14,351 views
. Dispatch2. Orient 3. Enigma 4. Discern 5. Enhance 6. Attribute 7. Nocturnal 8. Exemplify 9. Mobile 10. Attest Animals Possess
1. 13 answers
2. asked by ME
3. 14,291 views
A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur.So
1. 5 answers
2. asked by sol
3. 14,256 views
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. Assume the plane is traveling
1. 1 answer
2. asked by Bridge
3. 14,164 views
72% working women use computers choose 5 at randomwhats the probility at least 1 does not use a computer whats the probility
1. 3 answers
2. asked by max
3. 14,163 views
If the line 3x-4y = 0 is tangent in the first quadrant to the curve y = x^3 + k, then k is
1. 1 answer
2. asked by S
3. 14,150 views
Write the net ionic equation for the reaction that occurs when aqueous solutions of barium hydroxide and hydrobromic acid are
1. 6 answers
2. asked by Hannah
3. 14,011 views
Rank the following fertilizers in decreasing order of mass percentage of nitrogen:NH3 NH4NO3 (NH4)2HPO4 KNO3 (NH4)H2PO4
1. 4 answers
2. asked by Anonymous
3. 14,000 views
How much work must be done to stop a 1250 kg car traveling at 105 km/h?
1. 9 answers
2. asked by Emily Grossman
3. 13,953 views
How many ways can six different books be arranged on a shelf if one of the books is a dictionary and it must be on an end?
1. 28 answers
2. asked by Rock
3. 13,893 views
Calculate the lattice energy of potassium oxide from the following data:Enthalpy of sublimation of potassium: +89.24 kJ/mol Bond
1. 2 answers
2. asked by Joanie
3. 13,851 views
You have exactly 100 dollars to buy 100 animals you must buy at least one of each of the following animals Chickens=50 cents
1. 4 answers
2. asked by Max
3. 13,783 views
My answers:1. Suffice 2. Sinister 3. Intricate 4. Incoherent 5. Implausible 6. Degenerate 7. Intercede 8. Sanctuary 9.
1. 10 answers
2. asked by ME
3. 13,754 views
(a) Calculate the molarity of a solution that contains 0.175 molZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl
1. 4 answers
2. asked by Anon
3. 13,639 views
three point charges are placed at the following points on the x-axis: +2µC at x=0, -3µC at x=40 cm, -5µC at x=120 cm. Find
1. 5 answers
2. asked by Joanna Luz
3. 13,611 views
The Hydrolysis Reactions - Write net-ionic equations for the reaction of each salt with water below. If there is no reaction,
1. 1 answer
2. asked by K
3. 13,521 views
A 0.28-kg stone is held 1.5 m above the top edge of a water well and then dropped into it. The well has a depth of 4.8 m.(a)
1. 2 answers
2. asked by Anonymous
3. 13,431 views
Two forces, of magnitudes F1= 80.0N and F2= 50.0N, act in opposite directions on a block, which sits atop a frictionless
1. 3 answers
2. asked by physics please show steps
3. 13,241 views
A rectangular beam is cut from a cylindrical log of radius 25 cm. The strength of a beam of width w and height h is proportional
1. 2 answers
2. asked by Maria
3. 13,166 views
My Answer:1. Venture 2. calamity 3. turmoil 4. Flagrant 5. comprehensive 6. rehabilitate 7. fluctuate 8.ponder 9.persevere 10.
1. 15 answers
2. asked by ME
3. 13,143 views
Starting from one oasis, a camel walks 25km in a direction 30 degrees south of west and then walks 30km toward the north to a
1. 3 answers
2. asked by christine
3. 13,078 views
During a baseball game, a batter hits apop-up to a fielder 82 m away. The acceleration of gravity is 9.8 m/s2 . If the ball
1. 5 answers
2. asked by Aditya
3. 13,056 views
Determine the oxidation number for the indicated element in each of the following compounds: (a) Co in LiCoO2, (b) Al in NaAlH4,
1. 2 answers
2. asked by rob
3. 12,987 views
By default, your numerical entry is scored as correct if it is within 1% of the correct answer. A rule of thumb is always to
1. 6 answers
2. asked by Angel
3. 12,851 views
The following four forces act on 4.00 kg object:F1 = 300 N east F2 = 700 N north F3 = 500 N west F4 = 600 N south What is the
1. 4 answers
2. asked by Christine
3. 12,841 views
will a red blood cell undergo crenation, hemolysis, or no change in each of the following solutions?1% (m/v) glucose 2% (m/v)
1. 2 answers
2. asked by Curlyqty
3. 12,805 views
Calculate the work done in joules when 1.0 mole of water vaporizes at 1.0 atm and 100C. Assume that the volume of liquid water
1. 3 answers
2. asked by Monty
3. 12,658 views
Bromine has two natural occurring isotopes (Br-79 and Br-81) and has an atomic mass of 79.904 amu. The mass of Br-81 is 80.9163
1. 9 answers
2. asked by Davis
3. 12,600 views
Lithium reacts with nitrogen gas according to the following reaction: 6Li(s)+N2(g)-->2LiN(s)What mass of lithium (in g ) is
1. 4 answers
2. asked by JULIE
3. 12,551 views
A local citizen wants to fence a rectangular community garden. The length of the garden should be at least 110 ft, and the
1. 17 answers
2. asked by Jane
3. 12,491 views
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial
1. 1 answer
2. asked by aaa
3. 12,485 views
There are two forces on the 2.36 kg box in the overhead view of Fig. 5-31 but only one is shown. For F1 = 18.6 N, a = 11.4 m/s2,
1. 2 answers
2. asked by Anonymous
3. 12,458 views
An open box of maximum volume is to be made from a square piece of cardboard, 24 inches on each side, by cutting equal squares
1. 4 answers
2. asked by Anonymous
3. 12,443 views
Combined the sentences by changing the italicized word group to an infinitvie or infinitive phrase(italicized word group) 1. The
1. 9 answers
2. asked by Tommy
3. 12,389 views
A man stands on the roof of a 15m tall building and throws a rock with a velocity of magnitude 30m/s at an angle of 33deg above
1. 5 answers
2. asked by Kyle
3. 12,191 views
A 0.50 kilogram ball is thrown vertically upward with an initial kinetic energy of 25 joules. Approximately how high will the
1. 3 answers
2. asked by lucy
3. 12,090 views
Two fire towers are 30 kilometers apart, tower A being due west of tower B. A fire is spotted from the towers, and the bearings
1. 4 answers
2. asked by Mike
3. 11,966 views
A man and his wife share a sum of money in the ratio 3:2. If the sum of money is doubled, then in what ratio should they divide
1. 8 answers
2. asked by Amir
3. 11,964 views
A fence is to be built to enclose a rectangular area of 220 square feet. The fence along three sides is to be made of material
1. 1 answer
2. asked by Olivia
3. 11,877 views
A father racing his son has 1/3 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.4
1. 1 answer
2. asked by nan
3. 11,867 views
How many grams of dry NH4Cl need to be added to 2.10L of a 0.600M solution of ammonia,NH3 , to prepare a buffer solution that
1. 5 answers
2. asked by Jessica
3. 11,812 views
Does anyone know the answer to the math riddle "Did you hear about..." the answer is 12 words and it's pg 167.
1. 15 answers
2. asked by Maddie
3. 11,773 views
Write molecular, ionic, and net ionic equations.AgNO3(aq) + KBr(aq) -->
1. 2 answers
2. asked by Brea
3. 11,737 views
What is the mass of 2.00 L of an intravenous glucose solution w/ a density of 1.15 g/ml?
1. 1 answer
2. asked by Ann
3. 11,595 views
Which of the answers for the following conversions contains the correct number of significant figures?A)2.543 m x
1. 2 answers
2. asked by kelie
3. 11,474 views
If f is the focal length of a convex lens and an object is placed at a distance p from the lens, then its image will be at a
1. 2 answers
2. asked by Sam
3. 11,461 views
A blue ball is thrown upward with an initial speed of 20.6 m/s, from a height of 0.8 meters above the ground. 2.5 seconds after
1. 6 answers
2. asked by a
3. 11,451 views
P2-1AFrontier Park was started on April 1 by C. J. Mendez and associates. The following selected events and transactions
1. 6 answers
2. asked by Jaycee
3. 11,439 views
Angle 3 and angle 4 form a linear pair. The measure of angle 3 is four more than three times the measure of angle 4. Find the
1. 6 answers
2. asked by Melea
3. 11,427 views
a student standing on the roof of a 50 meter high building kicks a stone at a horizontal speed of 4 meters per second, how much
1. 6 answers
2. asked by jack
3. 11,386 views
(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is
1. 4 answers
2. asked by Allie
3. 11,359 views
A particle, starting from point A in the drawing at a height h0 = 3.2 m, is projected down the curved runway. Upon leaving the
1. 4 answers
2. asked by Anonymous
3. 11,295 views
Complete the table by filling in the formula for the ionic compound formed by each pair of cations and anions, as shown for the
1. 2 answers
2. asked by Lauren
3. 11,159 views
What might you have if you don't feel well?
1. 20 answers
2. asked by lolololol
3. 11,100 views
Suppose f(pi/3) = 3 and f '(pi/3) = −7,and let g(x) = f(x) sin x and h(x) = (cos x)/f(x). Find the following. a. g'(pi/3) b.
1. 2 answers
2. asked by Christina
3. 11,096 views
give me examples of physical features?
1. 22 answers
2. asked by jennifer white
3. 11,032 views

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