Science & Mathematics - 29 October 2007

A rocket moves striaght upward, starting from rest with an acceleration of 29.4m/s^2. It runs out of fuel at the end of 4.00seconds and continues to coast upward, reaching a maximum height before falling back to Earth.

(a.) Find the rocket's velocity and position at the end of 4.00seconds.

(b.) Find the maximum height the rocket reaches.






There was ten parts to this problem and I'm stuck on how todo these to.
Thanks sooo much for the help!!!!

2007-10-29 06:33:14 · 1 answers · asked by Anonymous in Physics

Would a product of evolution even conceive the idea of a god?

2007-10-29 06:31:34 · 18 answers · asked by Anonymous in Parapsychology

1.find m and n such that (1,4) is an inflection point of f(x)=mx^3+3nx^2.
2.write the sum using sigma notaion: -(1/2)+(2/3)-(3/4)+(4/5)...-(13/14).
3.summation formula find 40*Sigma*j=1 [(j-2)(j+2)]
4.antiderivative of f(t)=5sint+2cos(t).
5.Integral(cube rootof r^2+(2/r^3)-6) dr
6.integral (x^3-4x)/x^3 dx

I have answered the rest of the questions on these hand outs, but I have no clue of how to do the antiderivatives. I also have about 30 minutes till class. Any help would be appreciated. I cant remember for the life me about sigma. Thanks

2007-10-29 06:27:03 · 2 answers · asked by Matthew S 1 in Mathematics

Find the derivative of

f (t) =(3+ ln t)/(4 − ln t)

2007-10-29 06:20:18 · 4 answers · asked by jokey89 2 in Mathematics

2^2y=4

2007-10-29 06:18:51 · 3 answers · asked by Anonymous in Mathematics

2007-10-29 06:17:32 · 3 answers · asked by Damski007 2 in Zoology

2007-10-29 06:16:10 · 3 answers · asked by Anonymous in Medicine

2007-10-29 06:15:30 · 12 answers · asked by Anonymous in Mathematics

When I add 1.50 mL of 0.69 M NH3 to 1.0 L of 1E-3 M FeSO4, what will Q be?

I determined when NH3 reacts with H2O, it forms 3.52E-3 M OH.
Was I suppose to do this?
How do I calculate Q from here?

2007-10-29 06:14:21 · 1 answers · asked by Tiffany 4 in Chemistry

Can someone PLEASE recommend a good pyhsics website where I could look up 'moments' or tell me what they are or perhaps give me another name for them!

2007-10-29 06:12:12 · 2 answers · asked by Meryl 2 in Physics

i need to hand in coursework tommorow please help and if possible could you also mention the site you got the information of please and thanks

2007-10-29 06:07:43 · 2 answers · asked by ebrahim m 2 in Chemistry

2007-10-29 06:03:42 · 8 answers · asked by mad_xpert 2 in Physics

2007-10-29 05:58:37 · 8 answers · asked by goaves 1 in Astronomy & Space

What are four possible consequences when the niches of two species competing in the same area overlap to a large degree?

2007-10-29 05:58:25 · 2 answers · asked by Anonymous in Zoology

2007-10-29 05:55:32 · 2 answers · asked by Anonymous in Chemistry

"plywood" houses on the coast? They must build fortified reinforced concrete homes or perhaps underground refuge.
How strange-US so rich ...

2007-10-29 05:53:39 · 3 answers · asked by Chonkin 1 in Weather

2007-10-29 05:53:13 · 1 answers · asked by Anonymous in Chemistry

Should we refurbish old buildings such as Mills to avoid knocing down more trees to build new communities/business? What are the the financial and environmental benefits?

2007-10-29 05:49:18 · 1 answers · asked by Janel 1 in Earth Sciences & Geology

2007-10-29 05:47:04 · 1 answers · asked by Anonymous in Chemistry

In his explanation of the threshold frequency in the photoelectric effect, Einstein reasoned that the absorbed photon must have the minimum energy required to dislodge an electron from the metal surface. This energy is called the work function () of that metal. What is the longest wavelength of radiation (in nm) that could cause the photoelectric effect in each of the following metals?
(a) Barium, = 4.3 10-19 J
nm
(b) Tantalum, = 6.41 10-19 J
nm
(c) Tungsten, = 7.16 10-19 J
nm

2007-10-29 05:44:44 · 1 answers · asked by jnester0289 1 in Physics

1)If a^x=b^y=c^z and b^2=ac,then 1/x+1/z is?
2)If x-1/x-2=2-1/x-2 then x is equal to ?
3)If two nos. differ by 3 and their product is 504,then the nos. are ?

2007-10-29 05:41:33 · 3 answers · asked by Anonymous in Mathematics

given the following Formation Constants(Kf) for
Kf ( Ca^+2 - EDTA ) = 5.0x10^10
kf ( Pb^+2 -EDTA ) = 1.1x10^18

2007-10-29 05:41:16 · 6 answers · asked by crazzy_em 3 in Chemistry

In addition to continuous radiation, fluorescent lamps emit sharp lines in the visible region from a mercury discharge within the tube. Much of this light has a wavelength of 436 nm. What is the energy (in J) of one photon of this light?

2007-10-29 05:39:22 · 1 answers · asked by jnester0289 1 in Chemistry

i could throw like one of those red and white balls and be like PIKACHUU and a pikachu appeared then it evolved into richu!

2007-10-29 05:38:45 · 5 answers · asked by ~welshy~ 5 in Biology

2007-10-29 05:36:43 · 2 answers · asked by aimers 2 in Astronomy & Space

2007-10-29 05:29:14 · 3 answers · asked by Anonymous in Engineering

Complete the two-column proof

Given: ∠1 and ∠2 form a linear pair.
m∠1 = ∠2(m∠1)
Prove: m∠1 = 60

(A) ∠1 and ∠2 form a linear pair (A) Given
(B) ∠1 and ∠2 are supplementary (B) Definition of linear pair
(C) ? (C) Definition of supplementary angles
(D) m∠2 = 2(m∠1) (D) ?
(E) m∠1 = 2(m∠1) = 180 (E) ?
(F) 3(m∠1) = 180 (F) Substitiution
(G) 3(m∠1)/3 = 180\3 (G) Division
(H) m∠1 = 60 (H) Substitution

2007-10-29 05:27:41 · 3 answers · asked by Katey 1 in Mathematics

(40y^-2q) divided by (2y^4 q^9)

=38y^-6 q^-8

2007-10-29 05:23:33 · 2 answers · asked by Anonymous in Mathematics

2007-10-29 05:22:27 · 2 answers · asked by LEO 1 in Engineering

A toy car is sliding with a kinetic energy of 3.9 J when it locks up its tires and slides for 74 cm, while a frictional force of 0.74 N acts against it. What is the kinetic energy (in Joules) of the car after this frictional work is done?

I'd appreciate it if anyone could offer some assitance.

2007-10-29 05:18:51 · 2 answers · asked by Anonymous in Physics