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Questions (837)

A 4kg object is subjected to two forces, F1=2Ni-3Nj, and F2=4Ni-11Nj. The object is at rest at the origin at t=0.What is the
1. 6 answers
2. 2,608 views
In the standard (x,y) coordinate plane, the graph of (x + 3)2 + (y + 5)2 = 16 is a circle. What is the circumference of the
1. 5 answers
2. 4,409 views
Which of the following identifies atrocities committed by the Soviet Union that targeted ukrainians
1. 1 answer
2. 56 views
If you want to prepare 2.0 liters of a .25 M solution of NH4Cl, how many grams of the salt should you weigh out?
1. 5 answers
2. 3,369 views
Evaluate exactly the value of the integral from negative 1 to 0 of the product of the cube of quantity 2 times x to the 5th
1. 5 answers
2. 3,693 views
A bicycle and rider have a combined potential energy of 1400 J. What is the potential energy if the bicycle and rider have one
1. 3 answers
2. 628 views
1. In a normal distribution, the number of organisms exhibiting a phenotype variant near the lowest value isA. Less than the
1. 11 answers
2. 8,703 views
Mrs. Smith's Algebra 2 class scored very well on the last quiz. With one exception, everyonereceived an A. Within how many
1. 1 answer
2. 95 views
What happens when carbon dioxide from the atmosphere dissolves in seawater?Ocean levels rise. Oceans are better able to support
1. 1 answer
2. 32 views
Which of the following statements connects Woodrow Wilson's intentions of imperialist to the national self-determinationThey
1. 1 answer
2. 32 views
What is the effect of the authors of assonance in the following line from the raven
1. 1 answer
2. 16 views
I have to take a college placement test and am studying the practive test. He is the question . . . What is the equation of the
1. 3 answers
2. 1,042 views
HELP PLEASE! I am taking my college placement test tomorrow and am working on the sample test now. I need help with this
1. 1 answer
2. 536 views
What has been Australia’s involvement in UNESCO, UN conventions and international environmental treaties?These sites detail
1. 1 answer
2. 993 views
Outline Australia’s positions and responsibilities in the United Nations
1. 1 answer
2. 387 views
Outline Australia’s positions and responsibilities in the United Nationsaustralia plays a big role :P australia's role in the
1. 16 answers
2. 644 views
What controversy was connected to Surface Mining Control and Recovery Act?Check this site for opposition to that act.
1. 1 answer
2. 476 views
how about expressing 230 parts per thousand (ppt) of SO4^2- in molper kg? 230 ppt is 230 g/1000 g = 230 g/kg. Convert 230 grams
1. 2 answers
2. 552 views
A bag contains 9 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the
1. 4 answers
2. 8,712 views
My question is to get a better understanding of this. Basically, these two problems, I did it WITHOUT replacement. So I would
1. 1 answer
2. 686 views
No idea how to do this. I looked in my book and there usually is a data set present to get the first, second and third quartile.
1. 1 answer
2. 596 views
A variable is normally distributed. 42% of the possible observations of the variable lie between 20 and 28. What information
1. 1 answer
2. 430 views
Let x represent the number which shows up when a balanced die is rolled. Then x is a random variable with a uniform
1. 3 answers
2. 2,996 views
Stalin said that ideas are more powerful than guns, we don't let our opponents have guns why should we let them have ideas. How
1. 1 answer
2. 592 views
Do you the different comma's?I don't know what your exact question is, but here is a webpage that includes excellent
1. 1 answer
2. 444 views
DOES ANYONE HAVE A WEBSITE TO LOOK UP BOOKS? PLEZ HELP!Here is a good one: http://www.gutenberg.net Be aware, though, that not
1. 1 answer
2. 429 views
Need a good thesis statement about the gender protrayal in Jane Eyre. This is what I ahve, but looking for other suggestions:The
1. 2 answers
2. 586 views
General question: do polypeptides only make up proteins and not carbohydrates? and can they be formed by dehydration synthesis?
1. 1 answer
2. 397 views
Why can carboxyl and phosphate groups act as acids?
1. 1 answer
2. 389 views
What's high specific heat is mainly a consequence of the:A) high specific heat of oxygen and hydrogen atoms B) inability of
1. 4 answers
2. 2,521 views
i don't understand thiswhy can carboxyl and phosphate groups act as acids? as in, what makes an acid?
1. 1 answer
2. 343 views
Do I use a semicolon correctly in this sentence?"This caused David to become a spectator rather than a sufferer; covering his
1. 5 answers
2. 570 views
How is waste minimization bad locally in USA?
1. 4 answers
2. 452 views
What are waste minimization components?
1. 1 answer
2. 463 views
Who is creating the most waste?What is suggested that we do to curve the waste problems? What is already being done to help
1. 1 answer
2. 455 views
what are the future effects/impacts of landfills?
1. 2 answers
2. 534 views
Who is creating the most waste?What is suggested that we do to curve the waste problems? What is already being done to help
1. 1 answer
2. 492 views
Topic: Waste MinimizationHow bad is it locally (USA)?
1. 4 answers
2. 335 views
1. In measuring the amount of ATP and NADPH consumed by the Calvin cycle, you find 30,000 molecules of ATP consumed but only
1. 1 answer
2. 514 views
The directions say for each of the following use appropriate chem properties to explain the following observations.What would be
1. 1 answer
2. 420 views
Suppose that the mean number of customers who arrive at the check-out counters each minute is 4. Create a Poisson Distribution
1. 6 answers
2. 1,275 views
ok the question is....A point charge of 8.00 nC is at the center of a cube with sides that are 0.200 m. What is the electric
1. 4 answers
2. 1,513 views
(a) How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 30.0 cm in diameter
1. 4 answers
2. 2,751 views
During a violent electric storm, a car is struck by a falling high-voltage wire that puts an excess charge of 850 uC on the
1. 2 answers
2. 1,024 views
A neutral conductor completely encloses a hole inside of it. You observe the outer surface of this conductor carries a charge of
1. 3 answers
2. 1,282 views
A point charge Q= 4.60 uC is held fixed at the origin. A second point charge q=1.20 uC with mass of 2.80 * 10^-4 is placed on
1. 3 answers
2. 2,303 views
A parallel plate capacitor having plates 6.0 cm apart is connected across the terminals of a 12.0 V battery. (a) Being as
1. 3 answers
2. 2,087 views
A paralle plate air capacitor has a capacitance of 500.0 pF and a charge of magnitude 0.200 uC on each plate. The plates are 0.6
1. 4 answers
2. 1,796 views
(a) If you use two quarters 2.00 mm apart to make a parallel plate capacitor, what is its capacitance? Measure the necessary
1. 1 answer
2. 470 views
A 450 uF capacitor is charged to 295 V. Then a wire is connected between the plates. How many joules of thermal energy are
1. 2 answers
2. 1,123 views
(a) How much charge does a battery have to supply to a 5.0 uF capacitor to create a potential difference of 1.5 V across its
1. 5 answers
2. 3,843 views
A certain resistor has a resistance of 1.484 omega at 20 degrees celsius and a resistance of 1.512 omega at 34.0 degrees
1. 6 answers
2. 1,649 views
The internal resistance of a dry cell increases gradually with age, even though the cell is not used. The emf, however, remains
1. 4 answers
2. 2,987 views
What does nature is not benign mean?
1. 1 answer
2. 407 views
In designing a velocity selector that uses uniform perpendicular electric and magnetic fields, you want to select positive ions
1. 3 answers
2. 1,379 views
HOW AND WHY DID WARFARE CHANGE IN THE 20TH CENTURY?
1. 2 answers
2. 993 views
A beam of protons is accelerated through a potential difference of 0.745 kV and then enters a uniform magnetic field traveling
1. 3 answers
2. 1,436 views
does this need a comma:Over six billion souls in the world and they all have something in common. Thanks for ur help.
1. 3 answers
2. 381 views
Is this a strong thesis:The characters of the novel demonstrate how misery drives people to do things they would not normally
1. 3 answers
2. 415 views
when citing long quotes do i put the parentheses with the page # after the period or before?thanks for ur help.
1. 3 answers
2. 368 views
An electron beam of a TV picture tube is accelerated through a potential difference of 2.00 kV. It then passes into a magnetic
1. 2 answers
2. 671 views
Can someone please check the grammar in the following sentences. Please.1. Normally Victor takes pleasure in spending time with
1. 4 answers
2. 379 views
how can i word this differently:People advise others to stay clear of the horrible consequences of despair.
1. 6 answers
2. 399 views
If a magnetic flux passes through a circular coil when its diameter D, what should be its diameter (in terms of D) so that only
1. 3 answers
2. 467 views
A coil of wire with 200 circular turns of radius of 3 cm is in a uniform magnetic field along the axis of the coil. the coil has
1. 3 answers
2. 2,031 views
A closely wound rectangular coil of 80 turns has dimensions of 25 cm by 40 cm. The plane of the coil is rotated from a position
1. 4 answers
2. 1,921 views
What is the mass in grams of 1.02X10^24 molecules of NaCl?
1. 4 answers
2. 896 views
A transformer consists of 275 primary windings and 834 secondary windings. If the potential difference across the primary coil
1. 2 answers
2. 569 views
An inductor used in a dc power supply has an inductance of 12 H and a resistance of 180 ohms and carries a current of .300 A.
1. 2 answers
2. 745 views
A transformer consists of 275 primary windings and 834 secondary windings. If the potential difference across the primary coil
1. 3 answers
2. 3,165 views
An inductor used in a dc power supply has an inductance of 12 H and a resistance of 180 ohms and carries a current of .300 A.
1. 4 answers
2. 2,662 views
What is a current issue between Native Americans and the Federal Government. Indentify the legislation that you think is linked
1. 1 answer
2. 381 views
When a solar flare erupts on the surface of the sun, how many minutes after it occurs does its light show up in an astronomer's
1. 4 answers
2. 1,782 views
In TV picture, faint, slightly offset ghost images are formed when the signal from the transmitter travels to the receiver both
1. 4 answers
2. 936 views
Medical x rays are taken with electromagnetic waves having a wavelength around .1 nm. What are the frequency, period, and wave
1. 5 answers
2. 4,582 views
We can reasonaly model a 75 W incandescent lightbulb as a sphere 6 cm in diameter. Typically, only about 5% of the energy goes
1. 2 answers
2. 1,117 views
During 2004, japanese scientists successfully tested two solar sails. One had somewhat complicated shape that we shall model as
1. 2 answers
2. 902 views
If the critical angle for light at an interface between certain substances is 54.2 degrees, what is the polarizing angle at this
1. 4 answers
2. 529 views
A mirror on the passenger side of your car is convex and has a radius of curvature with magnitude 18 cm. (a)Another car is seen
1. 4 answers
2. 2,674 views
The crystalline lens of the human eye is a double convex lens made of material haveing an index of refraction of 1.44. Its focal
1. 5 answers
2. 2,816 views
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.85 m tall that is 4.25 m from the lens.
1. 1 answer
2. 642 views
You want to take a full length photo of your friend who is 2 m tall, using a 35 mm camera having a 50 mm lens. The image
1. 1 answer
2. 461 views
You want to take a full length photo of your friend who is 2 m tall, using a 35 mm camera having a 50 mm lens. The image
1. 3 answers
2. 2,247 views
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.85 m tall that is 4.25 m from the lens.
1. 1 answer
2. 754 views
What gropu was largely responsible for funding the builing of the railroad system in the U.S.?
1. 4 answers
2. 347 views
Two small stereo speakers A and B that are 1.4 m apart are sending out sound of wavelength 34 cm in all directions and all in
1. 4 answers
2. 1,714 views
Coherent light of frequency 6.32 * 10^14 Hz passes through two thin slits and falls on a screen 85 cm away. You observe that the
1. 4 answers
2. 2,189 views
What is the thinnest film of a coating with n=1.42 on glass n=1.52 for which destructive interference of the red component (650
1. 3 answers
2. 6,484 views
A laser used to weld detached retinas emits light with a wavelength of 652 nm in pulses that are 20 ms in duration. THe average
1. 2 answers
2. 1,220 views
A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of
1. 4 answers
2. 687 views
A sample of charcoal from an archaeological site contains 55 g of carbon and decays at a rate of .877 Bq. How old is it?ok I am
1. 2 answers
2. 544 views
A sample of charcoal from an archaeological site contains 55 g of carbon and decays at a rate of .877 Bq. How old is it?ok I am
1. 4 answers
2. 2,787 views
Calculate the energy released in the fusion reaction 2 3 4 11 H + 1 H->2 H +0 n. The atomic mass of 3 1 H (tritium is 3.016049
1. 4 answers
2. 811 views
Which sentence is correct the one with or without the comma?In the beginning there was man. In the beginning, there was no man.
1. 1 answer
2. 364 views
Question 1Use the following research question and data for questions 1 - 6. A researcher is examining the effects of a
1. 4 answers
2. 1,712 views
I've been trying to do this problem but I would get confused and stuck..Consider a sample of a hydrocarbon at 0.959 atm and 298
1. 1 answer
2. 656 views
While two forces act on it, a particle is to move at the constant velocity v = (3 m/s) i - (4 m/s) j. One of the forces is F1 =
1. 2 answers
2. 1,018 views
A banked circular highway curve is designed for traffic moving at 60 km/h. The radius of the curve is 205 m. Traffic is moving
1. 4 answers
2. 1,495 views
How long after 7:30 are a clock's minute hand and hour hand 50 degrees apart?
1. 1 answer
2. 373 views
The half life of Uranium 230 is 20.8 days. How long would it take for 20% of Uranium 230 to decay?
1. 1 answer
2. 376 views

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