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2011
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Questions Asked on February 20, 2011

A loudspeaker of mass 25.0 kg is suspended a distance of 1.00 m below the ceiling by two cables that make equal angles with the
1. 5 answers
2. asked by Tina
3. 5,512 views
One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the
1. 2 answers
2. asked by kia
3. 3,544 views
A sign is in the shape of a rhombus with a 60° angle and sides of 2 cm long. Find the area of the sign to the nearest tenth.
1. 2 answers
2. asked by Anonymous
3. 3,166 views
Find the gradient of the straight line that passes through the points (3,6) and (-5,-2) and hence find the equation of the line,
1. 3 answers
2. asked by Mego
3. 3,109 views
a crate is pushed to the top of a frictionless inclined plane 15 m long with a force of 25 N.If the crate weighs 125 N, how high
1. 3 answers
2. asked by Sophie
3. 2,800 views
Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.1 L of a 0.10 M
1. 1 answer
2. asked by Jessica
3. 2,726 views
About how much pressure do the feet of a 6000-kg elephant exert on the ground? Assume each foot has area of 0.10 square meters.
1. 2 answers
2. asked by Sophia
3. 2,436 views
Roxanne is making a strawberry milkshake in her blender. A tiny .0050-kg strawberry is rapidly spun aroundhe inside of the
1. 2 answers
2. asked by julia
3. 2,372 views
Find the slope of the tangent line to the curve (a lemniscate)2(x^2+y^2)^2 = 25(x^2-y^2) it is at pt (3,1)
1. 3 answers
2. asked by Aric
3. 2,367 views
The electric field E_1 at one face of a parallelepiped is uniform over the entire face and is directed out of the face. At the
1. 2 answers
2. asked by ami
3. 2,303 views
One light bulb is selected at random from a lot of 150 light bulbs, of which 6% are defective. What is the probability that the
1. 1 answer
2. asked by Vanny
3. 1,927 views
A banked circular highway curve is designed for traffic moving at 57 km/h. The radius of the curve is 211 m. Traffic is moving
1. 3 answers
2. asked by D
3. 1,890 views
A pressure cooker is shaped like a canwith a lid 25 cm in diameter. If the pressure in the cooker can reach 3.0 atm, how much
1. 3 answers
2. asked by mNoellb
3. 1,874 views
A bill has been approved in the House and Senate, albeit in slightly different versions. The bill now goes toA) the president
1. 2 answers
2. asked by Mini
3. 1,824 views
A British company makes optical fibers that are 13.6 km in length. If a beam of light travels along one of those fibers, always
1. 1 answer
2. asked by Ashley
3. 1,802 views
Through the process of doing work, energy can move between the external world and the system as the result of ____.The sentence
1. 1 answer
2. asked by Sejul
3. 1,730 views
A capacitor consists of a solid metal sphere of radius 3 cm placed at the center of a thin metal spherical shell of radius 12
1. 2 answers
2. asked by Kara
3. 1,673 views
a bullet with a mass of 5 g and a speed of 600 m/s penetrates a tree to a depth of 4 cm. Assume that a constant frictional force
1. 2 answers
2. asked by Nilan
3. 1,671 views
An immersion heater of resistance R converts electrical energy into thermal energy that is transferred to the liquid in which
1. 1 answer
2. asked by Amanda S.
3. 1,667 views
A 22.9-kg child is on a swing attached to ropes that are L = 1.33 m long. Take the zero of the gravitational potential energy to
1. 1 answer
2. asked by Emma
3. 1,649 views
The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower
1. 1 answer
2. asked by Jam
3. 1,635 views
Two positive charges of magnitude q are each a distance d from the origin A of a coordinate system as shown above.( Figure: h t
1. 1 answer
2. asked by Amanda E.
3. 1,625 views
Can't figure this one out."In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a
1. 3 answers
2. asked by Mark
3. 1,593 views
What organelle do plant cells have that animal cells don't?other than chloroplast.
1. 2 answers
2. asked by John
3. 1,571 views
What is the mass of the air in a room that has dimensions of 10m x 30m x 4m?
1. 1 answer
2. asked by Sophia
3. 1,505 views
¿A quién le ofrece frutas Roberto? (a su familia)roberto se las ofrece a su familia ¿Quién te llevó los entremeses? (mis
1. 1 answer
2. asked by Cassie
3. 1,437 views
If m varies directly as v^2, and m=2 when v=3, calculate the value of m when v=6
1. 2 answers
2. asked by kay
3. 1,425 views
Find the horizontal distance the skier travels before coming to rest if the incline also has a coefficient of kinetic friction
1. 1 answer
2. asked by Anonymous
3. 1,419 views
the area of a rectangular garden is 120 square meters. the width is 3 meters longer than 1/3 of the length. find the legth and
1. 1 answer
2. asked by Anonymous
3. 1,411 views
What is the minimum speed that a roller coaster must have so that the people do not fall out at the top of the circle in an
1. 1 answer
2. asked by Lindsey
3. 1,394 views
A boy can throw a ball a maximum horizontal distance of R on a level field. How far can he throw the same ball vertically
1. 1 answer
2. asked by kia
3. 1,353 views
Sir Robert Hooke (1635-1703), studied the elastic properties of springs and formulated the law that bears his name. Hooke found
1. 0 answers
2. asked by Anonymous
3. 1,312 views
You want to estimate the mean amount spent by customers at a local gas station with 98% confidence and a margin of error of no
1. 1 answer
2. asked by Leah
3. 1,280 views
You have a circuit with a 4 uF capacitor connected in series to 2 capacitors connected in parallel (2 uF and 1.5 uF). The
1. 1 answer
2. asked by Jon
3. 1,276 views
indentify at least two ereas of physic involved in the following:a) building a louder stereo system in your car b)bungee jumping
1. 2 answers
2. asked by nancy
3. 1,275 views
Aron: The two double A batteries in my CD player are dead, so the CD player doesn’t work. My television remote control, which
1. 1 answer
2. asked by shelly
3. 1,237 views
Find the area of the triangle ABC given A = 30°, b = 5, and c = 2.
1. 1 answer
2. asked by Sally
3. 1,191 views
find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and
1. 1 answer
2. asked by Patti
3. 1,189 views
you are painting a room that is 16 ft long and 14 ft wide and 8ft high. the room has to identical windows and doors. 1 door
1. 7 answers
2. asked by hunter
3. 1,184 views
the perimeter of a rectangle is 3.5 times the legth. the width is 2.5cm less than the legth. what is the width?
1. 1 answer
2. asked by kim
3. 1,174 views
. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state
1. 2 answers
2. asked by jack
3. 1,171 views
Ag+HNO3-----AgNO3+NO+H2O balance the redox reaction using the oxidation-number method
1. 1 answer
2. asked by sally
3. 1,137 views
1. A sports car travelling east at 48.0 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to
1. 3 answers
2. asked by alya
3. 1,135 views
If y is directly proportional to x, and y = 16 when x = 12, find the constant of proportionality, k. Give the answer in the form
1. 1 answer
2. asked by homie
3. 1,125 views
By 1700 the British colonies on the North American mainland were remarkably different, and inmany ways isolated from one
1. 1 answer
2. asked by Bob
3. 1,124 views
A bush baby, an African primate, is capable of leaping vertically to the remarkable height of 2.3 m. To jump this high, the bush
1. 3 answers
2. asked by Sasha
3. 1,113 views
Suppose that the terminal speed of a particular sky diver is 170 km/h in the spread-eagle position and 315 km/h in the nosedive
1. 0 answers
2. asked by D
3. 1,113 views
Earths diameter is about 13,000 Kilometers. If a globe has a diameter of 0.5 meter, write the globe's scale as a ratio. What
1. 6 answers
2. asked by linda
3. 1,111 views
When performing a capital budgeting analysis, interest expense included in the cash flows should be based on the current
1. 1 answer
2. asked by teresa
3. 1,098 views
Discuss how the General Linear Model assigns the optimal “weights” to predictor variables that allow us to maximize
1. 0 answers
2. asked by Sandra
3. 1,093 views
2 objects are .25m apart and exert a force of 2.5x10^-10 N on each other. Thier total mass is 4 kg. what is the mass of each?
1. 1 answer
2. asked by mark
3. 1,089 views
A parallel-plate capacitor is constructed from two circular metal plates or radius R. The plates are separated by a distance of
1. 2 answers
2. asked by Jon
3. 1,082 views
I forgot to include the following sentences. Thank you very much for your help!1)The revenge tragedy (or a revenge tragedy) has
1. 1 answer
2. asked by Mike
3. 1,081 views
another who am I? I an in the same chemical family as nitrogen. I am lighter than argon
1. 1 answer
2. asked by mary k.
3. 1,072 views
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a
1. 1 answer
2. asked by twynna
3. 1,064 views
• Choose a form of popular media that you are passionate about. The media may be music, a book, or a movie. I advise you to
1. 1 answer
2. asked by Deb
3. 1,060 views
What is the Cl concentration just as Ag2CrO4 begins to precipitate when 1.0 M AgNO3 is slowly added to a solution containing
1. 0 answers
2. asked by Jake
3. 1,019 views
Posted by Amanda E. on Saturday, February 19, 2011 at 10:10pm.Two positive charges of magnitude q are each a distance d from the
1. 3 answers
2. asked by Amanda S.
3. 1,012 views
The vapor pressure of pure water at 85 celsius is normally 433.6 mmHg but decrease to 393.8mmHg upon addition?of an unknown
1. 1 answer
2. asked by Jude
3. 991 views
Two small metal spheres with masses 2.0 and 4.0 are tied together by a 5.4--long massless string and are at rest on a
1. 1 answer
2. asked by carlyle
3. 991 views
Suppose that R is the set of real numbers. Let f: R--> R be defined by f(x)= mx+b, where m and b are real numbers and m is
1. 1 answer
2. asked by Adam
3. 980 views
a sample of natural gas at stp is 78% ch4 and 22% c2h6 by volume. how many moles of each gas are presented in 2 L of the
1. 0 answers
2. asked by uriel
3. 977 views
Compare and Contrast the development of the New England, Middle, Chesapeake, and SouthernColonies. Discuss the economic,
1. 5 answers
2. asked by Bob
3. 975 views
A class consists of 50 students, 20 of them are girls and boys, 10 them are rich and remaining poor, 5 of them are fair
1. 2 answers
2. asked by uma
3. 974 views
A landscape architect is planning an artificial waterfall in a city park. Water flowing at 1.40 m/s will leave the end of a
1. 1 answer
2. asked by kia
3. 956 views
Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a
1. 1 answer
2. asked by William
3. 923 views
An airplane flies directly west at 1,000 kilometers per hour. Without changing directions, the plane returns to its starting
1. 12 answers
2. asked by linda
3. 923 views
compute the price elasticity of demand for paint and show calculations? If a gallon of paint went from 3.00 to 3.50 a gallon and
1. 0 answers
2. asked by kim
3. 922 views
how do you implement your educational philosophy in the classroom and what educational theories would be at work.
1. 1 answer
2. asked by pat
3. 914 views
a bullet with a mass of 5 g and a speed of 600 m/s penetrates a tree to a depth of 4 cm. Assume that a constant frictional force
1. 1 answer
2. asked by Nilan
3. 894 views
A 4.55-kg ball of clay is thrown downward from a height of 3.13 m with a speed of 4.41 m/s onto a spring with k = 1690 N/m. The
1. 3 answers
2. asked by Emma
3. 888 views
Most members of Congress area. concerned with national issues, but even more concerned with local ones. b. controlled by
1. 3 answers
2. asked by Mini
3. 883 views
A boy can throw a ball a maximum horizontal distance of R on a level field. How far can he throw the same ball vertically
1. 1 answer
2. asked by kia
3. 869 views
How many calories are released when 3 grams of 100º C steam turns to 0º C ice
1. 1 answer
2. asked by Sophia
3. 868 views
In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm
1. 0 answers
2. asked by D
3. 860 views
Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or
1. 3 answers
2. asked by Stephanie
3. 822 views
Rosie (mass 47 kg) pushes a box with a horizontal force of 140 N (31.472 lb) at a speed 15 m/min.What is Rosie's power output?
1. 1 answer
2. asked by Nabil
3. 807 views
Which is correct?1. What did you do for the winter vacation? 2. What did you do for winter vacation? I think #2 is correct, if
1. 1 answer
2. asked by Jameson
3. 796 views
okay i have to write an argumentative essay dealing with child abuse laws and how they are effective in the US and idk where to
1. 4 answers
2. asked by maria
3. 781 views
The resistance of the wire in the windings of an electric starter motor for an automobile is 0.0190 Ohms. the motor is connected
1. 1 answer
2. asked by Kara
3. 769 views
Find the total surface area if q solid cube of volume 98 cm cube.An open water tank with length 20 cm and width 15 cm holds 4.8
1. 1 answer
2. asked by Julie charmster
3. 767 views
Do you think the time has finally come to redraft the 1876 Texas Constitution in order to meet the needs of the growing, 21sy
1. 3 answers
2. asked by Susie
3. 766 views
Five years ago, an automobile manufacturer started offering an extended warranty to buyers of its sport-utility vehicle.Â Â
1. 1 answer
2. asked by melissa
3. 758 views
A flagpole is 20 feet tall and, in the afternoon, casts a shadow of 30 feet. At the same time, Keira casts a shadow of 7.5 feet.
1. 1 answer
2. asked by Awesome1
3. 754 views
Translate into french please:Return to heat and cook until set and edge is dry,(takes approximately 30 seconds).
1. 1 answer
2. asked by Gabrielle
3. 754 views
Well, I looked all over the internet and I can't find a single decent website where I can watch this movie. I guess I'll just
1. 19 answers
2. asked by y912f
3. 753 views
what's the difference between vanderwaals forces and dipole dipole interaction
1. 2 answers
2. asked by vera
3. 752 views
I don't think its right . can you correct me please .A.log sin A = 9.91655 - 10 sinA = 0.82537 A = 55.626° = 55° 34' 35" B.log
1. 3 answers
2. asked by anon
3. 752 views
The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius.
1. 3 answers
2. asked by Richard
3. 739 views
a 0.20 kg ball is released from a height of 10 m above the beach; the impression the ball makes in the sand is 5.0 cm deep while
1. 2 answers
2. asked by Anonymous
3. 731 views
Rosie (mass 47 kg) pushes a box with a horizontal force of 140 N (31.472 lb) at a speed 15 m/min.What is Rosie's power output?
1. 1 answer
2. asked by Nabil
3. 724 views
The South Island of New Zealand lies at about 170 degrees East. What hemisphere is it in?
1. 6 answers
2. asked by linda
3. 719 views
Earth's diamter is about 13,000 kilometers. If a globe has a diameter of 0.5 meter, write the globes scale as a ratio. What
1. 0 answers
2. asked by linda
3. 715 views
To what volume should you dilute 126 ml of an 7.90 M CuCl2 solution so that 49.5 ml of the diluted solution contains 5.9 g
1. 0 answers
2. asked by anna
3. 713 views
To buy both a new car and a new house, Tina sought two loans totalling $260,394. The simple interest rate on the first loan was
1. 1 answer
2. asked by Jack
3. 713 views
A train can travel 280 miles in the same time that it takes a car to travel 140 miles. If the train's rate is 40 miles per hour
1. 2 answers
2. asked by Jam
3. 711 views
Factor the Following:3x^2 + 10xy + 7y^2
1. 1 answer
2. asked by Julie
3. 706 views
Water drops over 49 m high Niagara Falls at the rate of 6.0 106 kg/s. If all the energy of the falling water could be harnessed
1. 1 answer
2. asked by Anonymous
3. 704 views
2.50 mL of ethyl acetate and 2.50 mL of distilled water are added to the 5.00 mL of 3 Molar HCl and the mixture is allowed to
1. 0 answers
2. asked by Tichele
3. 689 views
How many grams of carbon tetrachloride CCL4 must be mixed with 35.96g of ethyl acetate CH3COOCH2CH3 at 50?celsius to produce a
1. 0 answers
2. asked by Jude
3. 687 views

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