Science & Mathematics - 31 October 2007

A drunk driver strikes a parked car. During the collision the cars become entangled and slide to a stop together. The drunk driver's car has a total mass of 742 kg, and the parked car has a total mass of 776 kg. If the cars slide 18 m before coming to rest, how fast was the drunk driver going? The coefficient of sliding friction between the tires and the road is 0.59.

Err any ideas?

2007-10-31 10:42:04 · 1 answers · asked by Anonymous in Physics

2007-10-31 10:39:17 · 9 answers · asked by Anonymous in Mathematics

do they stay put or do they start bumpin' uglies.

2007-10-31 10:38:53 · 2 answers · asked by keyahnoo 2 in Physics

2007-10-31 10:29:06 · 3 answers · asked by shinigami100 1 in Physics

this is a chemsity question

2007-10-31 10:27:50 · 3 answers · asked by skycap756 2 in Chemistry

2007-10-31 10:25:20 · 5 answers · asked by speedy 2 in Geography

2007-10-31 10:25:05 · 7 answers · asked by alik_det 1 in Physics

2007-10-31 10:24:19 · 8 answers · asked by heyy 1 in Geography

2007-10-31 10:21:00 · 8 answers · asked by billybobjo 2 in Astronomy & Space

1 chicken was eaten by a hawk.
2 chickens were eaten by a fox
3 chicken were eaten by a wolf
4 chicken were taken by the government

How many chickens left?

2007-10-31 10:20:53 · 19 answers · asked by Alexander 6 in Mathematics

I'm stuck on this genetics problem. I have the answers, but I need to know how to figure out each question. The question is:

In sesame plants, the one-pod conidition (P) is dominant to the three-pod condition (p), and a normal leaf (L) is dominant to wrinkled leaf (l). Pod type and leaf type are inherited independently. Determine the genotypes for the two parents for all possible matings producing the following offspring:

a. 318 one-pod, normal leaf : 98 one-pod, wrinkled leaf
b. 323 three-pod, normal lead : 106 three-pod, wrinkled leaf
c. 401 one-pod, normal leaf
d. 150 one-pod, normal leaf : 147 one-pod, wrinkled leaf : 51 three-pod, normal leaf : 48 three-pod, wrinkled leaf.
e. 223 one-pod, normal leaf : 72 one-pod, wrinkled leaf : 76 three-pod, normal leaf : 27 three-pod, wrinkled leaf.

Please show work and explain. =/ My teacher failed to explain this, so thanks! =]

2007-10-31 10:13:35 · 3 answers · asked by RAWR. 5 in Biology

been stuck for a while

2007-10-31 10:13:05 · 3 answers · asked by Anonymous in Mathematics

2007-10-31 10:04:59 · 1 answers · asked by Anonymous in Botany

2007-10-31 10:03:42 · 5 answers · asked by Shannon T 1 in Earth Sciences & Geology

2007-10-31 10:01:57 · 8 answers · asked by hullelvira 1 in Engineering

Given: ABCD is a parallelogram( A top left, B top right C Bottom right, D bottom left)
Line AC bisects angle A and C

Prove: ABCD is a rhombus

2007-10-31 10:00:07 · 3 answers · asked by Dhoopy 3 in Mathematics

2007-10-31 09:58:59 · 8 answers · asked by Olivia H 1 in Astronomy & Space

2007-10-31 09:57:28 · 1 answers · asked by Unidentified 1 in Mathematics

2007-10-31 09:56:44 · 6 answers · asked by Amanda H 1 in Zoology

2007-10-31 09:56:05 · 5 answers · asked by Anonymous in Astronomy & Space

2007-10-31 09:55:09 · 11 answers · asked by Herbi 1 in Mathematics

2007-10-31 09:54:51 · 3 answers · asked by Anonymous in Astronomy & Space

what are the constraints of these inequalities?

x<=15
800x+1200y<=96000
x>=0
y>=0

2007-10-31 09:53:33 · 2 answers · asked by claire k 2 in Mathematics

2007-10-31 09:52:26 · 1 answers · asked by Ragu B 1 in Mathematics

my shop has just bought a new router and we have been cutting aluminum sheets. can the dust collector hole both the saw dust and aluminum chips or will it start a fire?

2007-10-31 09:52:03 · 3 answers · asked by brian4ups 1 in Engineering

Okay, we have (1- i)/(√3 - i).

I did exactly like I'm supposed to and got:

√2 [ cos (√2/2) + i sin ( -√2/2) ]
------------- ------------- --------------
2 [ cos (√3/2) + i sin ( -1/2) ]

=

√2 [ cos (7pi/4) + i sin (7pi/4) ]
------------- ------------- --------------
2 [ cos (11pi/6) + i sin (11pi/6) ]

And now I have to divide the √2 by 2 and subtract in the following manner:

[ cos (7pi/4 - 11pi/6) + i sin (7pi/4 - 11pi/6) ]

and I get:

√2/2 [ cos ( - pi/12) + i sin ( - pi/12) ]

Now before I go and do out the sum/difference of two cos and sin, etc. because I can't find a trig table with -pi/12, can someone just tell me if my answer is right so far?

Thank you so much! I'll pick a best answer TODAY!!!!!!!

2007-10-31 09:51:09 · 3 answers · asked by James J 2 in Mathematics

Here's the first problem I did and don't believe it's right. Could you please help me:

∫sec^2x√tan x dx
u=tan x=sin x/cos x
du/dx=sec^2x
du=sec^2x dx

1/2∫u^1/2 du
1/2√(2/3)u^3/2+c
1/2√(2/3)tan x^3/2+c

If this answer is incorrect, can you please show me the right way of doing this problem. This is a hard section to understand!

2007-10-31 09:49:11 · 2 answers · asked by Anonymous in Mathematics

An eight-foot fence that stands on level ground is one foot from a telephone pole. Find the shortest ladder that will reach over the fence to the pole.

This is an extra credit question for my BC Calc class. I'm not sure how to start this

2007-10-31 09:47:13 · 2 answers · asked by falconkick124 1 in Mathematics

hi this is my question
find the integral of the following equation
f(x)=(1/10)e^x(t-1/10) 0
i get this to equal to (1/10)e^0(t-1/10) is this correct or did i do something wrong? thanks

2007-10-31 09:47:06 · 2 answers · asked by Dr H 2 in Mathematics

Points A, B, C are on a line in the order ABC. What can be said about the distance AC in relation to the distance AB, BC?
AB - AC = BC
AB + BC = AC
AC + BC = AB


A, B, C are points with B in the line AC. What can be said about the distance AC in relation to the distances AB, BC?
AB + BC = AC
AB - AC = BC
AC + BC = AB

I don't understand how you find the answer to these. Can you please explain? Thanks in advance!

2007-10-31 09:46:42 · 1 answers · asked by Jason The Great 6 in Mathematics