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2011
February
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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
5 answers
asked by
Tina
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
2 answers
asked by
kia
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.
2 answers
asked by
Anonymous
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,
3 answers
asked by
Mego
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
3 answers
asked by
Sophie
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 answer
asked by
Jessica
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.
2 answers
asked by
Sophia
2,436 views
Roxanne is making a strawberry milkshake in her blender. A tiny .0050-kg strawberry is rapidly spun aroundhe inside of the
2 answers
asked by
julia
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)
3 answers
asked by
Aric
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
2 answers
asked by
ami
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 answer
asked by
Vanny
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
3 answers
asked by
D
1,890 views
A pressure cooker is shaped like a can
with a lid 25 cm in diameter. If the pressure in the cooker can reach 3.0 atm, how much
3 answers
asked by
mNoellb
1,874 views
A bill has been approved in the House and Senate, albeit in slightly different versions. The bill now goes to
A) the president
2 answers
asked by
Mini
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 answer
asked by
Ashley
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 answer
asked by
Sejul
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
2 answers
asked by
Kara
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
2 answers
asked by
Nilan
1,671 views
An immersion heater of resistance R converts electrical energy into thermal energy that is transferred to the liquid in which
1 answer
asked by
Amanda S.
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 answer
asked by
Emma
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 answer
asked by
Jam
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 answer
asked by
Amanda E.
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
3 answers
asked by
Mark
1,593 views
What organelle do plant cells have that animal cells don't?
other than chloroplast.
2 answers
asked by
John
1,571 views
What is the mass of the air in a room that has dimensions of 10m x 30m x 4m?
1 answer
asked by
Sophia
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 answer
asked by
Cassie
1,437 views
If m varies directly as v^2, and m=2 when v=3, calculate the value of m when v=6
2 answers
asked by
kay
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 answer
asked by
Anonymous
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 answer
asked by
Anonymous
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 answer
asked by
Lindsey
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 answer
asked by
kia
1,353 views
Sir Robert Hooke (1635-1703), studied the elastic properties of springs and formulated the law that bears his name. Hooke found
0 answers
asked by
Anonymous
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 answer
asked by
Leah
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 answer
asked by
Jon
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
2 answers
asked by
nancy
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 answer
asked by
shelly
1,237 views
Find the area of the triangle ABC given A = 30°, b = 5, and c = 2.
1 answer
asked by
Sally
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 answer
asked by
Patti
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
7 answers
asked by
hunter
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 answer
asked by
kim
1,174 views
. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state
2 answers
asked by
jack
1,171 views
Ag+HNO3-----AgNO3+NO+H2O balance the redox reaction using the oxidation-number method
1 answer
asked by
sally
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
3 answers
asked by
alya
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 answer
asked by
homie
1,125 views
By 1700 the British colonies on the North American mainland were remarkably different, and in
many ways isolated from one
1 answer
asked by
Bob
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
3 answers
asked by
Sasha
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
0 answers
asked by
D
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
6 answers
asked by
linda
1,111 views
When performing a capital budgeting analysis, interest expense included in the cash flows should be based on the current
1 answer
asked by
teresa
1,098 views
Discuss how the General Linear Model assigns the optimal “weights” to predictor variables that allow us to maximize
0 answers
asked by
Sandra
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 answer
asked by
mark
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
2 answers
asked by
Jon
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 answer
asked by
Mike
1,081 views
another who am I? I an in the same chemical family as nitrogen. I am lighter than argon
1 answer
asked by
mary k.
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 answer
asked by
twynna
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 answer
asked by
Deb
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
0 answers
asked by
Jake
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
3 answers
asked by
Amanda S.
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 answer
asked by
Jude
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 answer
asked by
carlyle
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 answer
asked by
Adam
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
0 answers
asked by
uriel
977 views
Compare and Contrast the development of the New England, Middle, Chesapeake, and Southern
Colonies. Discuss the economic,
5 answers
asked by
Bob
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
2 answers
asked by
uma
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 answer
asked by
kia
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 answer
asked by
William
923 views
An airplane flies directly west at 1,000 kilometers per hour. Without changing directions, the plane returns to its starting
12 answers
asked by
linda
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
0 answers
asked by
kim
922 views
how do you implement your educational philosophy in the classroom and what educational theories would be at work.
1 answer
asked by
pat
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 answer
asked by
Nilan
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
3 answers
asked by
Emma
888 views
Most members of Congress are
a. concerned with national issues, but even more concerned with local ones. b. controlled by
3 answers
asked by
Mini
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 answer
asked by
kia
869 views
How many calories are released when 3 grams of 100º C steam turns to 0º C ice
1 answer
asked by
Sophia
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
0 answers
asked by
D
860 views
Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or
3 answers
asked by
Stephanie
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 answer
asked by
Nabil
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 answer
asked by
Jameson
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
4 answers
asked by
maria
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 answer
asked by
Kara
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 answer
asked by
Julie charmster
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
3 answers
asked by
Susie
766 views
Five years ago, an automobile manufacturer started offering an extended warranty to buyers of its sport-utility vehicle. Â
1 answer
asked by
melissa
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 answer
asked by
Awesome1
754 views
Translate into french please:
Return to heat and cook until set and edge is dry,(takes approximately 30 seconds).
1 answer
asked by
Gabrielle
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
19 answers
asked by
y912f
753 views
what's the difference between vanderwaals forces and dipole dipole interaction
2 answers
asked by
vera
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
3 answers
asked by
anon
752 views
The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius.
3 answers
asked by
Richard
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
2 answers
asked by
Anonymous
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 answer
asked by
Nabil
724 views
The South Island of New Zealand lies at about 170 degrees East. What hemisphere is it in?
6 answers
asked by
linda
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
0 answers
asked by
linda
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
0 answers
asked by
anna
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 answer
asked by
Jack
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
2 answers
asked by
Jam
711 views
Factor the Following:
3x^2 + 10xy + 7y^2
1 answer
asked by
Julie
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 answer
asked by
Anonymous
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
0 answers
asked by
Tichele
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
0 answers
asked by
Jude
687 views
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