Science & Mathematics - 29 October 2007

2007-10-29 16:58:04 · 1 answers · asked by citruspitcher04 1 in Physics

What are the positive and negative effects of Global Warming?

2007-10-29 16:57:22 · 5 answers · asked by sony_tech_head 1 in Earth Sciences & Geology

my boyfriend heard somewhere that theres a planet or something (actually I'm not sure what it is) whose orbit will come close to the earth some time in the future and that it's gravity will be so strong it'll stop the earth's rotation for a couple of days!! wtf is that lol we're not sure if that's true or not or if that's even possible. According to what he heard it only happens once every i dont know how many years lol sorry not so helpful but i'm just completly in doubt of this.

2007-10-29 16:54:49 · 10 answers · asked by Anonymous in Astronomy & Space

2007-10-29 16:54:11 · 2 answers · asked by Mercury 2010 7 in Astronomy & Space

A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 64.3° above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 30.5 m away. By how much does the rocket clear the top of the wall?

2007-10-29 16:54:02 · 1 answers · asked by Anonymous in Mathematics

2007-10-29 16:50:49 · 1 answers · asked by Anonymous in Mathematics

I need to know ASAP for a charity dental program in progress in a remote village. Thank you!

2007-10-29 16:50:16 · 5 answers · asked by Ruthanne L 1 in Engineering

You are conducting an experiment inside a train car that may move horizontally along rail tracks. A load is hung from the ceiling on a string. The load is not swinging, and the string is observed to make a constant angle of 45 degrees with the horizontal. No other forces are acting on the load. which of the following statements are correct?

A.The train is an inertial frame of reference.
B.The train is not an inertial frame of reference.
C.The train may be at rest.
D.The train may be moving at a constant speed in a straight line.
E.The train may be moving at a constant speed in a circle.
F.The train must be speeding up.
G.The train must be slowing down.
H.The train must be accelerating.

2007-10-29 16:50:15 · 1 answers · asked by larryman210 1 in Physics

A solution of 51% pesticide is to be mixed with a solution of 35% pesticide to form 144 liters of a 42% solution. How many liters of the 51% solution must be used?

[a] 63 liters
[b] 73 liters
[c] 120 liters
[d] 119 liters


please show me how to do it
thanks :)

2007-10-29 16:49:47 · 4 answers · asked by vennysweetgirl21 3 in Mathematics

2007-10-29 16:48:29 · 6 answers · asked by Anonymous in Mathematics

2007-10-29 16:46:47 · 4 answers · asked by lolethaheath 1 in Astronomy & Space

Chemo and radiation result in hair loss and nausea. what can be said about the mode of action of there therapies given the cells of the hair follucles and the cells of the gastrointestinal lining reproduce rapidly.

2007-10-29 16:45:14 · 2 answers · asked by i need help fast 1 in Biology

Write 3/7-i as a complex number in standard form

2007-10-29 16:43:58 · 3 answers · asked by Anonymous in Mathematics

2007-10-29 16:41:27 · 0 answers · asked by invisible99 2 in Biology

2007-10-29 16:41:04 · 1 answers · asked by Indi 2 in Physics

The flywheel of a steam engine runs with a constant rotational velocity of 150 rev/min. When the steam is shut off, the friction of the bearings and of the air stops the wheel in 2.2 h. (a) What is the constant rotational acceleration, in revolutions per minute-squared, of the wheel during the slowdown?

(b) How many rotations does the wheel make during the slowdown?

(c) At the instant the flywheel is turning at 75 rev/min, what is the tangential component of the translational acceleration of a flywheel particle that is 50 cm from the axis of rotation? (d) What is the magnitude of the net translational acceleration of the particle in (c)?

Explain your work. Thanks! :)

2007-10-29 16:39:48 · 1 answers · asked by Anonymous in Physics

The amount A in an account after t years from an initial principle P invested at an annual rate r compounded continuously is given by A = Pe^rt where r is expressed as a decimal. Solve this formula for t in terms of A, P, and r.
a. t = ln(AP/r)
b. t = ln(A/rP)
c. t =r ln(A/P)
d. t=1/r ln(A/P)

2007-10-29 16:36:42 · 2 answers · asked by tessa 1 in Mathematics

Solve the equation ln(x + 5) - ln(3) = ln(x - 3).
a. 2.5
b. 5
c. 7
d. 4.5

2007-10-29 16:35:55 · 6 answers · asked by tessa 1 in Mathematics

Plz give me a solid reason......... n u could gain 10 points.

2007-10-29 16:35:50 · 9 answers · asked by shruthi jain 3 in Medicine

2007-10-29 16:33:38 · 4 answers · asked by Anonymous in Earth Sciences & Geology

A boy throws a rock horizontally from an elevated position 16 feet above the ground (perhaps from a cliff's edge). The rock travels a horizontal distance of 40 feet. How fast did the boy throw the rock? (Again, consider time.)

a) 16 ft/s
b) 40 ft/s
c) 43 ft/s
d) 56 ft/s
e) Cannot be solved with the information given

2007-10-29 16:32:21 · 3 answers · asked by ? 6 in Physics

for class where we create an animal that has evovled from another animal i am doing an octupus that lives in a rainforest and climbs trees. what would it skin look like? Also how would it reproduce?THanks

2007-10-29 16:31:44 · 4 answers · asked by Anonymous in Zoology

limerick or haiku

2007-10-29 16:31:27 · 2 answers · asked by vy a 1 in Physics

i was asked to find the 600th derivative of F(x)=xe^-x

2007-10-29 16:30:33 · 3 answers · asked by joech_02 1 in Mathematics

2007-10-29 16:28:36 · 0 answers · asked by Anonymous in Medicine

ex 6, 28, etc......????????? plz help

2007-10-29 16:27:18 · 2 answers · asked by alteclansinga 1 in Mathematics

Imagine a frictionless pulley (a solid cylinder) of unknown mass M and radius r = 0.22 m is used to draw water from a well. A bucket of mass m = 1.46 kg is attached to a cord wrapped around the cylinder. A bucket starts from rest at the top of the well and falls for t = 2.01 s before hitting the water h = 7.48 m below the top of the well. Neglect the mass of the cord.

Find angular acceleration, and tension of the cord

2007-10-29 16:23:48 · 1 answers · asked by DUTS 1 in Physics

hows it made detailed

2007-10-29 16:21:26 · 11 answers · asked by Francisco200995 2 in Botany

anyone no any facts or info on hurricane katrina. likewhat happened when people where being evacuated and the levee system. anything will do. thanks

2007-10-29 16:20:37 · 4 answers · asked by hwgud_izdis 2 in Geography

How object is science?

2007-10-29 16:20:22 · 3 answers · asked by Anonymous in Other - Science