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Physics Spring and Block Problems...?
A 2.6 kg block is dropped from rest from a height of 4.2 m above the top of the spring. When the block is momentarily at rest, the spring is compressed by 25.0 cm. What is the speed of the block when the compression of the spring is 15.0 cm?
answer is m/s.... i got 7.11 m/s but thats not right. please help
2 AnswersPhysics10 years agoPhysics Vector Problem?
Given the following force vectors: A is 28 lb at an angle of 27° clockwise from the +x-axis, and B is 43 lb at an angle of 48° clockwise from the +y-axis
(a)Find Vector C such that 2A+C-B results in a vector with a magnitude of 40 lb pointing in the +x direction.
1 AnswerPhysics10 years agoProjectile Motion Question?
A projectile is launched from ground level with an initial speed of 57.2 m/s. Find the launch angle (the angle the initial velocity vector is above the horizontal) such that the maximum height of the projectile is equal to its horizontal range. (Ignore any effects due to air resistance)
1 AnswerPhysics10 years agoarea between curves problem?
area between curves y=1/x, y=2/x^2, x=4
Decide whether to integrate with respect to x or y
2 AnswersMathematics1 decade agowhat is this weed song?
its a mellow almost country tune, and the major lyric repeated through out the song is "i got some gooooooood weeeeeeeeeeeed..." please help me i need to find this song
1 AnswerLyrics1 decade agoCalculus tangency question?
Draw the unit circle and plot the point P=(3,2). Observe there are TWO lines tangent to the circle passing through the point P. Answer the questions below with 3 decimal places of accuracy.
(a) The line L1 is tangent to the unit circle at the point
(b) The tangent line L1 has equation:
(c) The line L2 is tangent to the unit circle at the point ( , ).
(d) The tangent line L2 has equation:
2 AnswersMathematics1 decade agoTangent Line Question...?
Find the equation of the line tangent to the curve y=x^2 + 1 at the point (-4,17). Express your answer in slope intercept form (y=mx+b)
2 AnswersMathematics1 decade agoAP Calculus Question!?
Draw the unit circle and plot the point P=(3,2). Observe there are TWO lines tangent to the circle passing through the point P. Answer the questions below with 3 decimal places of accuracy.
(a) The line L1 is tangent to the unit circle at the point
(b) The tangent line L1 has equation:
(c) The line L2 is tangent to the unit circle at the point ( , ).
(d) The tangent line L2 has equation:
2 AnswersMathematics1 decade agoHow do I calculate my grade?
I got a 130/200 on my final the mean was a 140/200 and the standard deviation was a 28. The curve for the class is a 2.6 so what would my grade be for the final?
1 AnswerMathematics1 decade agoHard AP Chemistry Question! Help!?
Calculate the mass of HONH2 required to dissolve in enough water to make 249.9 mL of solution having a pH of 10.14 (Kb = 1.1 10-8).
1 AnswerChemistry1 decade agoCommon App Question...?
If the schools you are applying to are on the Common App, does this mean they accept teacher/EA letters of recommendation.
I know that some schools accept them or absolutely don't accept them, so is it safe to assume that if they use the common app, that they also accept letters of rec?
Thanks
1 AnswerHigher Education (University +)1 decade agoDrexel VIP Application Deadline?
Is there a deadline with Drexel's VIP application? And if there is what is it? Thanks
2 AnswersHigher Education (University +)1 decade agoBiology Question that is on an AP Bio Test?
A.photoautotrophs
B.photoheterotrophs
C.chemoautotrophs
D.chemoheterotrophs that perform decomposition
E.parasitic chemoheterotrophs
1. responsible for high levels of O2 in Earth's atmosphere
a. A
b. B
c. C
d. D
e. E
2. use light energy to generate ATP but do not release oxygen
a. A
b. B
c. C
d. D
e. E
2. obtain energy by oxidizing inorganic substances; energy that is used, in part, to fix CO2
a. A
b. B
c. C
d. D
e. E
3. responsible for many human diseases
a. A
b. B
c. C
d. D
e. E
4. cyanobacteria
a. A
b. B
c. C
d. D
e. E
5. use light energy to synthesize organic compounds from CO2
a. A
b. B
c. C
d. D
e. E
1 AnswerBiology1 decade agoWhile making out and some questions/tips....?
I know ur not really supposed to watch the other person when making out, but if u watch there mouth, is that still creepy?? Also, if u r trying to make a move and we are sitting in an awkward position, how do u go about fixing this...move her, wait, ask etc. Thanks for the help
3 AnswersSingles & Dating1 decade agoMini-DVI to RGB cable for Mac to TV?
Do they make Mini-DVI to RGB cables so that I can project my Macbook on to my 32" Vizio? Unfortunately my Vizio doesn't have a DVI input.......What should I do?
2 AnswersMonitors1 decade agoMacbook Fan RPM -1?
I downloaded Fan Control app, and when I went to change the settings, I noticed that the left and right fan exhausts weren't equal. The left exhaust was about 1600 and the right one was -1?! My mac isn't running hot or anything and everything seems normal. What is this and what should be the normal. I explained it better in this forum with a pic of the running app here: http://forums.macrumors.com/showthread.php?t=50659...
1 AnswerLaptops & Notebooks1 decade agoVerizon HTC XV6900?
I was given the phone from a friend, and it is still programmed for his verizon number. How do I go about changing it so that I can get it for my number? Do I have to unlock it, or what. thanks
1 AnswerCell Phones & Plans1 decade agoRedox Rxns 2 ??
When you have this equation in acidic solution, what is the balanced redox reaction?
MnO4-1 + C2O4-2 ===> Mn+2 + CO2
1 AnswerChemistry1 decade agoIcon for Safari Application?
i have leopard and i changed the safari icon.....now i want the other original safari icon, but i dont have it anymore. where or how can i get it back? thanks
1 AnswerSoftware1 decade agoApple Macbooks...?
Does anyone think the price will change on the black macbook from what it is now to the price in a month or so???
5 AnswersLaptops & Notebooks1 decade ago