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Questions Asked on December 3, 2010

a light string 4 meters long is wrapped around a solid cylindrical spool with a radius of 0.075 m and a mass of .5 kg.a 5kg mass
1. 2 answers
2. asked by mariel
3. 7,181 views
A 55 kg skier is at the top of a slope that is 10.0 m high.a) Set the zero level for gravitational potential energy at the
1. 1 answer
2. asked by Daniel Reinsnes
3. 6,262 views
You buy an eight year bond that has a 6% current yield and a 6% coupon (paid annually). In one year, promised yields to maturity
1. 3 answers
2. asked by Anonymous
3. 5,892 views
a 20% solution of H2SO4 has a density of 1.14 g/mL. calculate the molarity, normality and molality of the solution.
1. 2 answers
2. asked by Anonymous
3. 5,875 views
A billiard ball traveling at 8.0 m/s has an elastic collision with a second billiard ball of equal mass that is at rest. Afterth
1. 2 answers
2. asked by bob
3. 5,065 views
A solution of 2.50 g of a compound having the empirical formula C6H5P in 25.0 g of benzene(C6H6) is observed to freeze at 4.3
1. 3 answers
2. asked by Sara
3. 5,026 views
The pH of a 0.0050 M aqueous solution of calcium hydroxide is? Make sure to include all equations.
1. 2 answers
2. asked by Student
3. 4,178 views
Does the word "CHER" require an accent mark? What is the feminine form of the word?Additionally, can you remind me of the
1. 2 answers
2. asked by JRobin
3. 4,151 views
How many possible 9-digit zip codes are possible if the first digit cannot be zero?
1. 4 answers
2. asked by mychelle
3. 3,760 views
the mass of a dog that weighs 100 N how many kilograms does it weigh?
1. 2 answers
2. asked by Catherine
3. 3,214 views
Two solid objects, A and B, are placed in boiling water and allowed to come to temperature there. Each is then lifted out and
1. 1 answer
2. asked by Samantha
3. 2,840 views
Find the points on the graph of y = 1/x where the graph is parallel to the line 4x + 9y = 3.
1. 2 answers
2. asked by Michael
3. 2,770 views
name each isotope, and write it in symbolic notationatomic number 26; mass number 56 atomic number 29; mass number 64 atomic
1. 4 answers
2. asked by monique n
3. 2,726 views
A children's game has a spinner that is equally likely to land on any 1 of 4 colors: red, blue, yellow, or green. Determine the
1. 2 answers
2. asked by anonymous
3. 2,640 views
If appointed to head the U.S. Civil Service Commission, what polices would you propose to reduce radical ethnic strife in the
1. 29 answers
2. asked by lakesha
3. 2,497 views
show that the mass number and the number of protons are conserved in the following nuclear equation:234 230 4 92 U-----> 90 th +
1. 1 answer
2. asked by monique n
3. 2,171 views
What mass of steam at 100°C must be added to 1.00 kg of ice at 0°C to yield liquid water at 15°C?
1. 1 answer
2. asked by ami
3. 2,169 views
While standing at the left corner of the schoolyard in front of her school, Suzie estimates that the front face is 8.9 m wide,
1. 1 answer
2. asked by Taylor
3. 2,096 views
There are 4 black marbles and 5 red marbles in a bag. If you reach in and randomly select 2 marbles, what is the probability
1. 1 answer
2. asked by anonymous
3. 1,979 views
molecular equation, and net ionic equation ofK2SO4 + MgCl2 NiCl2 + NaOH MgCl2 + NaOH K2SO4 + NaOH Ba(OH)2 + NiCl2 Ba(OH)2 +
1. 2 answers
2. asked by Anonymous
3. 1,968 views
(A.)A hawk flies in a horizontal arc of radius 13.4 m at a constant speed of 4.5 m/s. Find its centripetal acceleration. Answer
1. 7 answers
2. asked by Jack
3. 1,906 views
Find the vertex and focus of the parabola.(x^2)-(24y) = 0
1. 2 answers
2. asked by barb
3. 1,837 views
A 1.00-kg beaker containing 2.0 kg of oil (density = 916 kg/m3) rests on a scale. A 2.00-kg block of iron is suspended from a
1. 3 answers
2. asked by Jimmy
3. 1,772 views
So, for my english class, I'll have to write a Short story ( Exposition Rising Action Climax Falling action Resolution )I'd like
1. 10 answers
2. asked by Simon
3. 1,754 views
I want to learn how to find the domain, holes, x-intercepts, y- intercepts, vertical asymptotes, and horizontal asymptotes of a
1. 3 answers
2. asked by Pablo
3. 1,739 views
Use the data given to calculate the value of delta G rxn for the reaction at 25C2C(graphite)+H2(g)--->C2H2(g) C H2 C2H2 S(J K^-1
1. 4 answers
2. asked by Liliy
3. 1,737 views
Find the critical numbers of the function.f(x) = x^4*e^-8x
1. 3 answers
2. asked by Tina P
3. 1,723 views
how many protons, electrons, and neutrons are in the following isotopes.uranium-235 hydrogen-3 silicon-29
1. 4 answers
2. asked by monique n
3. 1,679 views
A sample of an unknown material weighs 260 N in air and 175 N when immersed in alcohol of specific gravity 0.700.
1. 1 answer
2. asked by B.Ha
3. 1,594 views
A figure shows two forces acting on an object. They have magnitudes F1 = 6.3 N and F2 = 2.1 N. What third force will cause the
1. 1 answer
2. asked by emerald
3. 1,560 views
Each ordered pair is a solution of a direct variation. Write the equation of direct variation.(2,10) (8,2) (7,21) (2,-16) Please
1. 2 answers
2. asked by Caitlyn
3. 1,501 views
The question is: You plan on attending a picnic for the up coming holiday. You can either go to your sister's picnic who lives
1. 1 answer
2. asked by bianca
3. 1,480 views
A 7.6 kg chair is pushed across a frictionless floor with a force of 42 N that is applied at an angle of 22° downward from the
1. 2 answers
2. asked by aly
3. 1,468 views
Write in a standard notation:eighteen thousand and two hundredths
1. 3 answers
2. asked by Sherkyra8456
3. 1,429 views
A platform of mass 0.83 kg is supported on four springs (only two springs are shown in the picture, but there are four
1. 1 answer
2. asked by Susan
3. 1,405 views
A skater spinning with angular speed of 1.5 rad/s draws in her outstretched arms thereby reducing her moment of inertia by a
1. 2 answers
2. asked by Kevin
3. 1,397 views
The intensity of an earthquake wave passing through the Earth is measured to be 2.5×106 J/m^2 at a distance of 48 km from the
1. 1 answer
2. asked by Jake
3. 1,390 views
if you arrange these items into equal rows tell how many will be in each row and how many will be left over, here it is 17
1. 5 answers
2. asked by olive
3. 1,357 views
How much energy (in kilojoules) is needed to heat 5.45g of ice from -12.0 C to 32.0 C? The heat of fusion of water is
1. 2 answers
2. asked by emily
3. 1,310 views
When dissolved in an aqueous solution, which of the following salts will yield a neutral solution?Choose one answer. a. KCN b.
1. 1 answer
2. asked by Stephanie
3. 1,280 views
Consider the following chemical equation: NaOH (aq) + HCl (aq) ® NaCl (s) + H2O (l), the reactant NaOH?
1. 1 answer
2. asked by Alexandria
3. 1,278 views
A life insurance company sells a term insurance policy to a 21-year-old male that pays $100,000 if the insured dies within the
1. 0 answers
2. asked by Katja
3. 1,278 views
100 g mass is attached to a string 75 cm long. swings in a horizontal circle. The mass goes around its path once every 0.8.
1. 0 answers
2. asked by chelsie
3. 1,261 views
How did the settlement house movement differ from earlier attempts to relieve poverty?
1. 3 answers
2. asked by Tiffany
3. 1,250 views
A cold front traveling at an average speed of 35 km/h eastward is 280 km due west of you. Appoximately how long will it be
1. 3 answers
2. asked by D
3. 1,243 views
is Br2(L)+Cl2(g)--->BrCl(g) a balanced equation?
1. 4 answers
2. asked by youu
3. 1,241 views
Kira has feet of fencing. She will use it to form three sides of a rectangular garden. The fourth side will be along a house and
1. 4 answers
2. asked by Mary
3. 1,239 views
a student said that all squares are rectangles, but not all squares are rhombuses.What was the error??
1. 5 answers
2. asked by Katherine
3. 1,235 views
Use implicit differentiation to find dy/dx.ln xy + 5x = 30
1. 1 answer
2. asked by Erica
3. 1,221 views
i need help please. idont understand this question.as he enter desdemona's bedchamber in order to kill her, othello mutters: it
1. 3 answers
2. asked by Need Help
3. 1,220 views
The length of a rectangular field is 50 meters more than twice its width. If the perimeter is 700 meters, find the dimensions of
1. 1 answer
2. asked by Alice
3. 1,193 views
Alright, I'm writing a research paper and am so confused. My topic is on whether or not participating in music affects a
1. 0 answers
2. asked by Jon
3. 1,191 views
why would acetic acid concentration of a good vinegar need to be known for commercial reasons and regulatory health and safety
1. 1 answer
2. asked by andrea
3. 1,190 views
Please Help.How long, to the nearest tenth of a year, will it take $12,500 to grow to $20,000 at 6.5% annual interest compounded
1. 2 answers
2. asked by Roger
3. 1,189 views
A cell that is entering the M phase of the cell cycle is:A. always diploid, either with duplicated or unduplicated chromosomes
1. 0 answers
2. asked by Jon
3. 1,185 views
Find altitude of isosceles triangle if angle=53 degrees and base is 8 inches.
1. 3 answers
2. asked by Ro
3. 1,168 views
a sample of lead glass is prepared by melting together 20.0 g og silica (SiO2), and 80.0 g of lead oxide (PbO). what is the mole
1. 2 answers
2. asked by Anonymous
3. 1,149 views
Find the value of x such that the four-digit number x15x is divisible by 18.
1. 2 answers
2. asked by tyler
3. 1,140 views
To balance a 40.8-kg automobile tire and wheel, a mechanic must place a 41.7-g lead weight 25.0 cm from the center of the wheel.
1. 2 answers
2. asked by ann
3. 1,085 views
A 0.70 kg ball is moving horizontally with a speed of 8.8 m/s when it strikes a vertical wall. The ball rebounds with a speed of
1. 1 answer
2. asked by sam
3. 1,069 views
A 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.2 rad/s on frictionless horizontal ice.
1. 1 answer
2. asked by Susan
3. 1,066 views
An 85.0 kg fisherman decides to jump from his boat onto the dock. If the velocity of the fisherman is 4.30 m/s to thewest and
1. 1 answer
2. asked by bob
3. 1,051 views
A 1-L flask is filled with 1.45 g of argon at 25 degrees C. A sample of ethane vapor is added to the same flask until the total
1. 3 answers
2. asked by Liz
3. 1,045 views
There are 4 black marbles and 5 red marbles in a bag. If you reach in and randomly select 2 marbles, what is the probability
1. 1 answer
2. asked by anon
3. 1,032 views
1. Write 6.34 x 10 to the third power in a standard form.2. Secondly, Find the amount of rain the state of North Carliona
1. 3 answers
2. asked by Kim248Jackson
3. 1,024 views
A 15.0% (by mass) NaCl solution is available.. Determine what mass of solution should be used to obtaina. 2.50 mole of NaCl b.
1. 1 answer
2. asked by Tim
3. 1,006 views
is the lewis dot structure and a electron dot diagram the same thing ?
1. 1 answer
2. asked by Anonymous
3. 1,003 views
A cube of ice is taken from the freezer at -7.5°C and placed in a 101 g aluminum calorimeter filled with 282 g of water at room
1. 1 answer
2. asked by ami
3. 999 views
A ski gondola is connected to the top of a hill by a steel cable of length 720 m and diameter 1.3 cm. As the gondola comes to
1. 1 answer
2. asked by Eden
3. 989 views
A wire 100 inches long is to be cut into two pieces. One of the pieces will be bent into the shape of a circle and the other
1. 1 answer
2. asked by Matt
3. 967 views
A certain item sells for $30. If the cost of producing this item is given by C = .05s^3 + 100, find the marginal profit when x =
1. 1 answer
2. asked by Leslie
3. 946 views
A 67-year-old man is diagnosed with cancer and subsequently undergoes chemotherapy. As an expected side effect of chemotherapy,
1. 0 answers
2. asked by stacy
3. 924 views
Professional Growth Statement: _________________________________________________________________________________________________
1. 2 answers
2. asked by GREG
3. 922 views
What impact did black voters have on the Populist Party? What impact did the Populist Party ultimately have on their black
1. 0 answers
2. asked by anthony
3. 920 views
A children's game has a spinner that is equally likely to land on any 1 of 4 colors: red, blue, yellow, or green. Determine the
1. 0 answers
2. asked by Trev
3. 900 views
INFORMATIONS ABOUT CULTURAL DEVERSITY IN EUROPE
1. 1 answer
2. asked by Anonymous
3. 900 views
A centrifuge rotor has a moment of inertia of 3.30 10-2 kg·m2. How much energy is required to bring it from rest to 10000 rpm?I
1. 2 answers
2. asked by Syl
3. 898 views
How are russell baker and snowflake bentley alike and different?
1. 4 answers
2. asked by john
3. 892 views
A 0.70 kg ball is moving horizontally with a speed of 8.8 m/s when it strikes a vertical wall. The ball rebounds with a speed of
1. 1 answer
2. asked by sam
3. 889 views
I need help with part b, c, and d please!A 45 g mass is attached to a massless spring and allowed to oscillate around an
1. 3 answers
2. asked by Susan
3. 882 views
The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2
1. 1 answer
2. asked by Anonymous
3. 875 views
An iron block of the mass 1 kg is suspended on a spring of the spring constant 140 N/m, and merged into a vessel with 8 liters
1. 1 answer
2. asked by HelpPlease
3. 860 views
Which bond is polar covalent?a) H2 b) Cl2 c) HCl d) O2 is it HCL ?
1. 1 answer
2. asked by Anonymous
3. 858 views
calculate the potential energy of 30kg box raised 2 meters above ground?
1. 0 answers
2. asked by mercy
3. 855 views
(A.)A hawk flies in a horizontal arc of radius 13.4 m at a constant speed of 4.5 m/s. Find its centripetal acceleration. Answer
1. 0 answers
2. asked by Jack
3. 830 views
grendel is feared and hated because he: A)smells badly B) destroys crops C) eats men D) chases children.
1. 0 answers
2. asked by kim
3. 826 views
A bakery makes 4 different kids of cake. Each cake can have 3 different kinds of frosting. Each frosted cake can be decorated in
1. 0 answers
2. asked by Dillard
3. 825 views
An aqueous solution of H2SO4 is 60.0 % H2SO4 by mass. The density of the solution is 0.968 g/mL .I need to find the Molality,
1. 1 answer
2. asked by Sara
3. 825 views
Calculate the mass of 2.56*10^24 formula units of aluminum dichromate.
1. 1 answer
2. asked by jen
3. 815 views
A 0.70 kg mass at the end of a spring vibrates 4.0 times per second with an amplitude of 0.15 m.Determine the velocity when it
1. 7 answers
2. asked by Eden
3. 807 views
Terence wants to estimate the height of a tree. He places a mirror on level ground, as shown in the picture below, and stands so
1. 5 answers
2. asked by T
3. 802 views
A pilot wants to fly west (ie., the resultant is west). If the plane has an airspeed of 9.5 m/s, and there is a 25m/s wind
1. 1 answer
2. asked by jane
3. 788 views
Rubber BandA 156 g hockey puck is attached to a rubber band and rotated with an angular speed of 9.8 rad/s on frictionless
1. 1 answer
2. asked by Help
3. 784 views
There are 2 opaque bags, each containing red and yellow blocks. Bag 1 contains 3 red blocks and 5 yellow. Bag 2 contains 5 red
1. 2 answers
2. asked by Michelle
3. 765 views
Flask A contains 500 mL of water at 25 degrees Celsius and flask B contains 250 mL of water at 50 degrees Celsius. Which flask
1. 2 answers
2. asked by Laura
3. 764 views
Find the (theoretical) probability of a given event, assuming that the dice are distinguishable and fair, and that what is
1. 3 answers
2. asked by Liz
3. 760 views
A hot-air balloon, headed due east at an average speed of v = 14 miles per hour and at a constant altitude of h = 120 feet,
1. 1 answer
2. asked by Nicholas
3. 760 views
Use logarithmic differentiation to find dy/dx.y = sq. root [(x^2 - 1)/(x^2 + 1)]
1. 1 answer
2. asked by Rebecca
3. 757 views
Approximate the gravitational force of attraction between a 42.0 kg girl and a 56.0 kg boy if they are sitting 3.0 m apart in
1. 1 answer
2. asked by Devon
3. 754 views
C) A steel ball bearing the radius 1 cm is rolling along a table with speed 20 cm/sec when it starts to roll up an incline. How
1. 2 answers
2. asked by kwaku
3. 754 views

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