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Questions Answered

TuringTest:
Group Title
Quantum measurement and qubits.
 updated one year ago
 50 replies
 3 Medals
Mathematics

dfresenius:
Group Title
Trig integrals. sqrt(1cos2x)dx
 updated one year ago
 18 replies
 2 Medals
Mathematics

teacherman79:
Group Title
how do you show the set V of all 2 x 2 upper triangular matrices is a subspace of M22?
 updated one year ago
 7 replies
 2 Medals
Mathematics

Calculator:
Group Title
STATISTICS
A peptide consists of ten amino acids of four different kinds. What is the theoretical minimum number of tRNA mole…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

Hoa:
Group Title
solve f(n+2) 4f(n+1) +4f(n) = n subject to f(0) = 5 and f(1) =11.
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

buggiethebug:
Group Title
A negative acceleration means that the speed of the object decreases. Explain why this statement can be incorrect????
 updated one year ago
 39 replies
 2 Medals
Mathematics

c1c9m9h1:
Group Title
(2x^2+xy+y^2)dx + 2x^2 dy=0
How Do I Solve This 1st Order DifEQ? Help Please!!
 updated one year ago
 20 replies
 2 Medals
Mathematics

JamesJ:
Group Title
Here's a very nice question.
Using the standard power series expansion of e^1, evaluate the following limit ...
 updated one year ago
 25 replies
 No Medals Yet
Mathematics

sparky16:
Group Title
Solve:
2y^(1/2)=10
 updated one year ago
 40 replies
 No Medals Yet
Mathematics

sparky16:
Group Title
(y+1)^(2/3)=9
 updated one year ago
 15 replies
 No Medals Yet
Mathematics

jen1511:
Group Title
If C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and D = {numbers divisible by 2 from 1 to 10}, what is CD?
{2, 4, 6, 8, 10}
…
 updated one year ago
 10 replies
 1 Medal
Mathematics

tavia0628:
Group Title
Suppose P and Q are equivalent sets and n(P)=17.
What is the maximum number of elements in P u Q? What is the minimum?
What is the maximu…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

Kinglogan419:
Group Title
Reasons why Absolutism was a popular form of government in Europe from 1550 to 1800
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

helpasap111:
Group Title
BEST RESPONSE WILL GET A MEDAL AND A FAN
For the following system, if you isolated y in the first equation to use the Substitution Method, …
 updated one year ago
 19 replies
 1 Medal
Mathematics

mathaddict4471:
Group Title
challenge calculus question without a calculator use the Maclaurin series to compute e^1 medal and fan rewarded
 updated one year ago
 26 replies
 2 Medals
Mathematics

rrafey:
Group Title
two real life situations in which more than two forces act on an object
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

Edutopia:
Group Title
On a carnival ride the static friction between a person and the walls of the ride keep them from falling. The normal force is perpendicular …
 updated one year ago
 10 replies
 1 Medal
Mathematics

fluffymonkey:
Group Title
Derivation, Definition, unit, explanation and application of the grating equation????????
…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

JamesJ:
Group Title
A great illustration of pressure from the atmosphere supporting a column of fluid:
http://dailypicksandflicks.com/2011/10/23/koifishenjoy…
 updated one year ago
 4 replies
 1 Medal
Mathematics

Mashy:
Group Title
Second law and carnot engine
Can someone explain how second law prevents carnot engine from having 100 percent efficiency?.. why the carn…
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

mathslover:
Group Title
Let z be a nonreal complex number lying on the circle z = 1. Then prove that :
z = \(\frac{ 1 + i \tan ( \frac{ arg(z)}{2} )}{1  i \ta…
 updated one year ago
 42 replies
 1 Medal
Mathematics

musicfuryu:
Group Title
A 1,400 kg compact car rearends a 2,000 kg truck. Which vehicle experiences the larger momentum change from the collision?
The la…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

Fellowroot:
Group Title
Does the spring constant change when you are compressing a spring compared with stretching a spring? The the spring constant of a spring eve…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

shantelll:
Group Title
Math yes i know but just one science question...
How long do ya'll think it will take for a sugar cube to dissolve?
 updated one year ago
 7 replies
 1 Medal
Mathematics

Compassionate:
Group Title
Let's see how smart OpenStudy is.
The light from the sun travels 187,000mps
…
 updated one year ago
 25 replies
 3 Medals
Mathematics

jmays14:
Group Title
A 1000 kg car moving at 20. m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.
 updated one year ago
 6 replies
 No Medals Yet
Mathematics

JenniferSmart1:
Group Title
What went wrong?
…
 updated one year ago
 62 replies
 3 Medals
Mathematics

emmykim:
Group Title
what would be some of the factors that affect the frequency of the sound produced by a singing wine glass?
 updated one year ago
 8 replies
 1 Medal
Mathematics

missylulu:
Group Title
how do you find a matrix A given its eigenvectors and eigenvalues?? please helpp Dx
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

some_someone:
Group Title
Who can help in physics?
 updated one year ago
 16 replies
 No Medals Yet
Mathematics
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