Science & Mathematics - 4 February 2007

2007-02-04 16:49:20 · 4 answers · asked by jean claudoo 2 in Mathematics

it's a clear sunny day.

2007-02-04 16:47:12 · 3 answers · asked by charles h 1 in Earth Sciences & Geology

2007-02-04 16:46:34 · 8 answers · asked by anil s 1 in Physics

How would I find the X -intercepts for these equations

y = x^2 -3x -2

and

y = x^2 -2x + 4

I am desperate.... for some reason I cannot figure this out. Do I need to use the quadratic eqaution and how would I set that up ?

2007-02-04 16:45:19 · 2 answers · asked by CookFrNW 3 in Mathematics

2007-02-04 16:42:32 · 5 answers · asked by bonnevie r 1 in Chemistry

If both the mass and the velocity of a ball were tripled, the kinetic energy of the ball would increase by a factor of________?
a. 3
b. 6
c. 9
d. 27

Why?

2007-02-04 16:41:08 · 5 answers · asked by ARB 2 in Physics

2007-02-04 16:39:12 · 8 answers · asked by albert r 1 in Weather

If friction is the only force acting on an object during a given physical process, which of the following assumptions can be made in regard to the object's kinetic energy?
a. The kinetic energy decreases
b. The kinetic energy increases
c. The kinetic energy remains constant
d. The kinetic energy decreases and then increases

Why?

2007-02-04 16:38:06 · 7 answers · asked by ARB 2 in Physics

Don't they both say that an object will remain at constant speed until an external force acts upon it?

2007-02-04 16:36:49 · 3 answers · asked by The Riddler 3 in Physics

A rocket with a mass of 1.2 x103 kg is scheduled to lift-off from a launch pad with an acceleration of 25 m/s2. What upward force must be externally applied to cause this acceleration?

can someone explain this one to me

2007-02-04 16:36:40 · 3 answers · asked by Dust T 1 in Physics

THere is an electric field of 3.73 x 10^14 N/C. What is the work needed to move a +0.10 microcoulomb charge from X to an infinite distance away and give it 0.02 J of kinetic energy?

2007-02-04 16:36:17 · 2 answers · asked by john P 1 in Physics

2007-02-04 16:34:37 · 9 answers · asked by Alex A 1 in Earth Sciences & Geology

its the second stepwhen extracting a metal from its ore

2007-02-04 16:33:27 · 10 answers · asked by Anonymous in Chemistry

A voltmeter is set up to read the rms-value of an AC voltage. The multimeter reads 10V. What is the amplitude of the AC voltage? Above all, show your calculation! Thanks and good luck! :)

2007-02-04 16:31:05 · 3 answers · asked by Anonymous in Engineering

2007-02-04 16:27:21 · 3 answers · asked by Christie D 1 in Mathematics

Using Hooke's cork cells diagram, provide at least two explanations as to why anacharis and cork appear so dissimilar under the microscope?

2007-02-04 16:26:21 · 4 answers · asked by lvlambs 2 in Biology

online college doesnt teach very good.

Graph by first solving for y.

4x – 3y = 6

2007-02-04 16:25:52 · 5 answers · asked by Anonymous in Mathematics

2007-02-04 16:25:11 · 7 answers · asked by Anonymous in Medicine

what two numbers whose sum is 32, and whose difference is 16?
what is the larger number and what is the small number?

2007-02-04 16:24:46 · 11 answers · asked by soul2true 1 in Mathematics

2007-02-04 16:22:19 · 9 answers · asked by Anonymous in Mathematics

2007-02-04 16:21:52 · 4 answers · asked by Christie D 1 in Mathematics

2007-02-04 16:18:41 · 10 answers · asked by Micky 1 in Weather

What are(is) the major(s) differences between onions and Anacharis plant cells? (What do anacharis cells have that onion cells lack and why?) Thanks alot. :)

2007-02-04 16:14:32 · 2 answers · asked by l3lackitty 1 in Biology

Determine which two equations represent perpendicular lines.
(a) y = 2/7 x – 2
(b) y = 2x – 2/7
(c) y = -1/2x + 2/7
(d) y = 1/2x –

2007-02-04 16:14:05 · 7 answers · asked by Anonymous in Mathematics

How long will it take for the object to hit the ground

h = -16^2 + 60t + 9

t = seconds
h = hieght

2007-02-04 16:13:35 · 1 answers · asked by CookFrNW 3 in Mathematics

Assume you have a small robot on wheels, and that it has infinite computing capabilities and infinitely fast processing. You program it to move 6 inches in 30 seconds, and then to repeatedly move 1/2 the previous distance in 1/2 the previous time, therefore going
3 inches in 15 seconds
1.5 inches in 7.5 seconds, etc.
Assuming (due to its infinite memory and speed) that it never experienced any computing errors, then it would never slow down, never stop, but never make it to the 1-foot mark.
What would happen?

2007-02-04 16:12:48 · 5 answers · asked by josef 2 in Physics

Determine which two equations represent parallel lines.
(a) y = –3x + 1(b) y = 3x + 1(c) y = x + 1
(d) y = –3x + 2

2007-02-04 16:10:58 · 5 answers · asked by Anonymous in Mathematics

D = -5p + 40

S = -p + 30p -8

Equilibrium price???

2007-02-04 16:10:41 · 1 answers · asked by CookFrNW 3 in Mathematics

what does the pyramind with the all seing eye represents in the Dollar bill, I mean i find it a little unusual

2007-02-04 16:09:50 · 1 answers · asked by Poseidon 2 in Earth Sciences & Geology

2007-02-04 16:09:35 · 3 answers · asked by Anonymous in Biology