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2011
January

Questions Asked on January 10, 2011

What occurs when a substance melts?1) It changes from solid to liquid, and heat is absorbed. 2) It changes from solid to liquid,
1. 3 answers
2. asked by lisa
3. 5,870 views
When a volume of H2 reacts with an equal volume of Cl2 (assume you have 1 L of each) at the same temperature and pressure, what
1. 1 answer
2. asked by Anonymous
3. 5,207 views
A saline solution is 0.9% NaCl. What masses of NaCl and water would be required to prepare 50. L of this saline solution? Assume
1. 3 answers
2. asked by Eric
3. 4,697 views
which substance has a definite shape and a definite volume at STP ?(1)NaCl(aq) (2)Cl2(g) (3)CCl4(l) (4)AlCl3(s) is it 4 because
1. 3 answers
2. asked by Jazmin
3. 4,578 views
A cat chases a mouse across a 1.7 m hightable. The mouse steps out of the way, and the cat slides off the table and strikes the
1. 4 answers
2. asked by jena
3. 4,241 views
a 3 kg block slides down a frictionless plane inclined 20 degrees to the horizontal. If the length of the plane's surface is
1. 3 answers
2. asked by mandy
3. 4,190 views
A person whose weight is W=584 N doing push-ups. Find the normal force exerted by the floor on each hand each foot, assuming
1. 1 answer
2. asked by EHm
3. 3,433 views
Change these active voice sentences into the passive voice?a) Farmers grow rice in India. b) I will finish the report later. c)
1. 4 answers
2. asked by rahila
3. 3,049 views
The diagonals of a rectangle are 12 inches long and intersect at an angle of 60 degrees. Find the perimeter of the rectangle.
1. 2 answers
2. asked by Mariana
3. 3,004 views
the difference between the boiling point and the freezing point of pure water at standard pressure is(1)32 K (2)273 K (3)100 K
1. 3 answers
2. asked by Jazmin
3. 2,873 views
which phase change is endothermic ?(1)gas-->solid (2)gas-->liquid (3)liquid-->solid (4)liquid-->gas
1. 2 answers
2. asked by Jazmin
3. 2,761 views
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar
1. 2 answers
2. asked by Kevin
3. 2,473 views
HELP ME!!!One of your friends missed the class on scientific notation. Describe how you would explain to your friend what it
1. 3 answers
2. asked by drew
3. 2,426 views
A man using a 70 kg garden roller on a level surface exerts a force 20 kgf at 45 degrees to the ground . Find the vertical force
1. 1 answer
2. asked by Joseph
3. 2,382 views
A crowbar is used as a lever. The effort force of 40 newtons moves 3 meters. The resistance force of 54 newtons moves 2 meters.
1. 7 answers
2. asked by Nella
3. 2,262 views
which substance takes the shape of and fills the volume of any container into which it is placed ?(1)H2O (l) (2)CO2(g) (3)I2(s)
1. 7 answers
2. asked by lisa
3. 2,180 views
Using the binomial theorem, Find the first three terms in the expansion of (x-(1/x))^5.My solution: C(5,0)x5 + C(5,1)(x4)(-1/x)
1. 1 answer
2. asked by Ed
3. 2,089 views
A pet-store supply truck moves at 25.0 m/ north along a highway. Inside, a dog moves at 1.75 m/s at an angle of 35.0 degrees
1. 3 answers
2. asked by Sofia
3. 2,017 views
Dents and Dings Auto Body buys paint with a list price of $29,000. If the supplier extends trade discounts of 30/35/20, what is
1. 3 answers
2. asked by bob
3. 1,767 views
Write the equation of the cosine function with an amplitude of 1, a period of 3pi/7, a phase shift of -pi/5, and a vertical
1. 2 answers
2. asked by Tabby
3. 1,729 views
Block A (60 N) and block B (40 N) are connected by a massless cord and are AT REST. Given ìs = 0.8.The friction on A is : 1. 40
1. 3 answers
2. asked by help !
3. 1,728 views
4. Write the equation of the cosine function with an amplitude of 1/3, a period of 2pi, and a phase shift of 3pi/2.5. Write the
1. 1 answer
2. asked by Tabby
3. 1,726 views
can someone explain this please?Identify whether each graph represents a function. Explain. If the graph dose represent a
1. 2 answers
2. asked by Courtney
3. 1,676 views
the length of a diagonal of a square is 22 square root of 2 millimeters. Find the perimeter of the square.
1. 2 answers
2. asked by Mariana
3. 1,631 views
A man holds a 178N ball in his hand, with the forearm horizontal. He can support the ball in this position because of the flexor
1. 1 answer
2. asked by Eissa
3. 1,624 views
Paul's car is 14 feet long. Paul is making a model of his car that is the actual size. Which proportion should be used to find
1. 7 answers
2. asked by Chris
3. 1,607 views
As a substance changes from liquid to gas, the average distance between molecules (1) decreases (2)increases(3) remains the same
1. 2 answers
2. asked by Jazmin
3. 1,592 views
How did the Europeans establish and maintain their trading empires with Asia?? idk help
1. 3 answers
2. asked by Lala
3. 1,579 views
In general, reaction rates double when the temperature is increased by 10ºC. The temperature of a reaction is increased by
1. 2 answers
2. asked by tycoon
3. 1,542 views
A baby sitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.682 m/s2.What is the velocity of the
1. 2 answers
2. asked by Michael
3. 1,471 views
Find the perimeter and area of each figure. give your answers in the simplest radical form.a 30-60-90- degree triangle with
1. 1 answer
2. asked by Esperanza
3. 1,455 views
An alpha particle (mass=6.68x10^-27kg)is emitted from a radioactive nucleus with an energy of 5.00MeV. How fast is the alpha
1. 1 answer
2. asked by Matt
3. 1,406 views
a pizza store offers 15 different toppings on its pizzas.what is the probability that 4 randomly selected toppings will include
1. 2 answers
2. asked by tina
3. 1,389 views
2NO(g) + O2(g) → 2NO2(g) + 112 kJwhat do you do to increase the reaction rate? decrease in pressure or increase in
1. 3 answers
2. asked by mikki
3. 1,379 views
Which binomial is a factor of f(x) = x4 - 27x2 -14x + 120?(x-4) (x-2) (x + 5) (x + 6)
1. 2 answers
2. asked by Zac
3. 1,369 views
What are the solute particles present in aqueous solutions of each compound? (Select all that apply.) acetic acid
1. 3 answers
2. asked by Anonymous
3. 1,363 views
tThe bob of a pendulum swings through a circular arc of constant radius. At what point of the swing does the cord holding the
1. 1 answer
2. asked by Anonymous
3. 1,319 views
N2 is described by its state properties of temperature @ - 100 Degree C, and pressure @10.0 MPa. Determine if it is reasonable
1. 0 answers
2. asked by chris
3. 1,290 views
A cat chases a mouse across a 1.7 m hightable. The mouse steps out of the way, and the cat slides off the table and strikes the
1. 2 answers
2. asked by jena
3. 1,286 views
What is the phase constant (from 0 to 2π rad) for the harmonic oscillator with the velocity function v(t) given in Fig. 15-30
1. 1 answer
2. asked by Anonymous
3. 1,280 views
Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared
1. 1 answer
2. asked by Tracy
3. 1,274 views
ordering fractions 1/2,7/8,9/10,1/3,3/5,1/4 write the above fractions in order.
1. 3 answers
2. asked by arjel
3. 1,269 views
A motor vessel tows a small dinghy by a rope which makes an angle of 20 degrees with the horizontal. If the tension in the rope
1. 4 answers
2. asked by Asamoah
3. 1,242 views
Hiv makes you immune to aids?is this true? You can get hiv from someone who doesnt have hiv? false?
1. 2 answers
2. asked by Anonymous
3. 1,209 views
Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared
1. 3 answers
2. asked by Tracy
3. 1,197 views
Assume the probability is 1/2 that a child born is a girl. If a family has three children, what is the probability that they
1. 2 answers
2. asked by Nicole
3. 1,195 views
A jet plane lands with a speed of 120 m/s and can decelerate uniformly at a maximum rate of 5.8 m/s2 as it comes to rest.Can
1. 2 answers
2. asked by Michael
3. 1,193 views
i need help on writng a thesis statement about women suffrage.
1. 2 answers
2. asked by alma
3. 1,177 views
2. f(x) = 1/4 cos(1/2 x + pi/2). Find the amplitude, period, and phase shift of the function.3. f(x) = -cos(3x + pi). Find the
1. 1 answer
2. asked by Tabby
3. 1,168 views
A crate is pulled to the right with a forceof 85.5 N, to the left with a force of 120.8 N, upward with a force of 652.1 N, and
1. 1 answer
2. asked by dmj697
3. 1,156 views
The sum of the squares of the measures of the sides of a square is 256. Find the measure of a diagonal of the square.
1. 3 answers
2. asked by Mariana
3. 1,144 views
Mr.kale received 4000 votes,Mrs. Chalker received 6000 votes,and Mr.rains received 1/3 of the votes. What was the total number
1. 3 answers
2. asked by jorge
3. 1,143 views
A cat climbs 20 m directly up a tree.What is the horizontal component of the cat’s displacement? Answer in units of m.
1. 2 answers
2. asked by jena
3. 1,140 views
This question HATES ME!Which value would best describes the data? 8, 9, 10, 12, 14, 15, 18, 18, 63. A-mean B-mode C-median D-
1. 3 answers
2. asked by Catherine
3. 1,123 views
The height of the tide in a given location on a given day is modelled using the sinusoidal function h(t)=5 sin (30(t-5))+7. a)
1. 1 answer
2. asked by Emily
3. 1,122 views
If the probability of an event happening is 1/7, what are the odds against it happening? What is the ratio of the odds against
1. 2 answers
2. asked by Jack
3. 1,106 views
Two vehicles are approaching an intersection. One is a 2500-kg pickup traveling at 14.0 m/s from east to west (the negative
1. 1 answer
2. asked by Amani
3. 1,100 views
define the variable, write the equation, solve and label.Central middle school sold 50 tickits for one night of the shcool play.
1. 3 answers
2. asked by Taylor
3. 1,100 views
A box contains 2 white calls and 7 pink balls. Two balls are drawn at random from the box.a) If the first ball is drawn and not
1. 1 answer
2. asked by Nicole
3. 1,099 views
Describe the end behavior for the graph of y= 12x^6 + 4x^4 - x^3 + 6x +1
1. 1 answer
2. asked by morgen
3. 1,081 views
the temperature of a substance increases by 10 degrees celsius in 5 minutes. write this as a unit rate. then convert into
1. 2 answers
2. asked by Anonymous
3. 1,065 views
The following wave function represents a travelling wave:y = 3.45 / [6.35 + (6.35x−8.30 t )2] where y and x are in cm, and t
1. 4 answers
2. asked by mike
3. 1,064 views
Hooks Athletics, Inc., has outstanding a preferred stock with a par value of $30 that pays a dividend of $2.50. The preferred
1. 1 answer
2. asked by Sandy
3. 1,038 views
Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction.i.e. _
1. 3 answers
2. asked by Stephen
3. 1,031 views
why is it necessary for a good leader to be a good manager and vice versa?
1. 1 answer
2. asked by nana
3. 1,024 views
a system of 1525 particles, each of which is either an electron or proton, has a net charge of -5.456*10^-17 C.A) How many
1. 0 answers
2. asked by Anonymous
3. 1,024 views
Who gets scarce resources in a market economy?A) the government B)whoever is willing and able to pay the price C)whoever wants
1. 4 answers
2. asked by Anonymous
3. 1,021 views
What number has 6 in tenths place,4 in the ones place,5 in the hundredths place,and 9 in the tens place?help me!
1. 2 answers
2. asked by Lauren
3. 1,013 views
A bird is flying with a speed of 12.0 m/s over water when it accidentally drops a 2.30 kg fish.The acceleration of gravity is
1. 3 answers
2. asked by Michael
3. 1,008 views
Block A (70 N) and block B (21 N) are connected by a massless cord and are at rest. Given ìs = 0.8. What is friction A ?
1. 2 answers
2. asked by help !
3. 1,006 views
in 1992, the life expectancy of males in a certain country was 67.5 years. In 1997, it was 69.9 years. let E represent the life
1. 3 answers
2. asked by Norma
3. 991 views
What would be the effect of low blood protein levels on the colloidal pressure?
1. 0 answers
2. asked by Elise
3. 990 views
Beth, a construction worker, attempts to pulla stake out of the ground by pulling on a rope that is attached to the stake. The
1. 2 answers
2. asked by dmj697
3. 976 views
John claimed he had a garden twice as large as Al's retangular-shaped garden that measured 15 ft by 30 ft. When they visited
1. 7 answers
2. asked by crystal
3. 966 views
A classmate beleives alcohol, marijuana and cocaine all have similar effects and should be legalized. Carefully evaluate the
1. 5 answers
2. asked by Anonymous
3. 965 views
Vanna Black pays money for vowels. If consonants are worth nothing and the following words are worth the following amounts, then
1. 1 answer
2. asked by Michaela
3. 950 views
A pelican flying along a horizontal path dropsa fish from a height of 5.0 m. The fish travels 8.5 m horizontally before it hits
1. 2 answers
2. asked by Anonymous
3. 935 views
need help revising the outline to complete sentences in parallel form.improving health 1. exercise a. aerobics b. stretching and
1. 1 answer
2. asked by Anonymous
3. 913 views
2.Graph f(x) = 1/4 cos(1/2 x + pi/2). Find the amplitude, period, and phase shift of the function.3. Graph f(x) = -cos(3x + pi).
1. 0 answers
2. asked by Tabby
3. 875 views
A person whose weight is W=584 N doing push-ups. Find the normal force exerted by the floor on each hand each foot, assuming
1. 1 answer
2. asked by EHm
3. 870 views
A player strikes a hockey puck giving it a velocity of 47.673 m/s. The puck slides across the ice for 0.175 s after which time
1. 1 answer
2. asked by Mike
3. 870 views
A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.50m long
1. 0 answers
2. asked by Monique
3. 870 views
A mail-order company charges $12 for each shirt. Shipping costs $f per oder.Write a variable expression for the cost of odering
1. 5 answers
2. asked by AbbyLovesMath
3. 849 views
Factor x3 4x2 3x + 18 = 0, given that 3 is a zero.
1. 4 answers
2. asked by Zac
3. 843 views
this is exactly how the question is written and i tried to solve it but i just couldn't. Can u please show me how the work was
1. 3 answers
2. asked by alex
3. 843 views
What are the two conditional statements make up the biconditional statement shown below?Two lines are skew if and only if they
1. 1 answer
2. asked by Needs Help
3. 823 views
if a wooden beam is 30 x 20 x 500 cm. and has a mass of 150 kg. what is the density of the wood
1. 1 answer
2. asked by izzy
3. 823 views
A theater decides to change the shape of its popcorn container from a rectangular boc to a right regular pyramid, as shown in
1. 1 answer
2. asked by crystal
3. 799 views
among the broad purposes of the united states government spelled out in the preamble to the constitution os the obligation to
1. 1 answer
2. asked by amanda
3. 795 views
According to the rational root theorem, which is not a possible rational root of x3 + 8x2 x 6 = 0?
1. 5 answers
2. asked by Zac
3. 780 views
Indicate how the bias would affect the measure of association. Would it be under estimated, or over estimated or unchanged.Perso
1. 2 answers
2. asked by Dianna
3. 778 views
a nickle is approximately 20mm in diameter and a quarter is about 25 mm in diameter. if the nickle is enlarges to a diameter of
1. 2 answers
2. asked by Tate
3. 778 views
The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The
1. 1 answer
2. asked by Mike
3. 776 views
An autographed baseball rolls off of a 0.55 m high desk and strikes the floor 0.82 m away from the desk.The acceleration of
1. 3 answers
2. asked by Michael
3. 770 views
One of the the zeros of the functions F(x)= x^4+2x^3-13x^2-38x-24 is x=-3, find the other zeros of the function.
1. 2 answers
2. asked by sue
3. 765 views
The net external force on the propeller of a3.3 kg model airplane is 6.5 N forward. What is the acceleration of the airplane?
1. 2 answers
2. asked by dmj697
3. 755 views
3 geometric means between 32 and 1/8
1. 2 answers
2. asked by zeus
3. 753 views
Out of jar with 100 marbles, 49 are blue marbles, 7 are green marbles, 27 are red marbles and 17 are yellow marbles. What is the
1. 3 answers
2. asked by Denver
3. 752 views
A body of mass 6kg, initially moving with speed 12m/s, experiences a constant retarding force of 10 newtons for 3 seconds. Find
1. 1 answer
2. asked by nerd
3. 749 views
what volume will 5.00g of dinitrogen oxide gas occupy at 50.0 degrees celcious and 12.0 atmosphere
1. 2 answers
2. asked by me
3. 729 views

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