Science & Mathematics - 18 September 2007

By April 2008, I need to switch to an "adult" doctor. Do I need blood work when I make the switch?

2007-09-18 14:13:35 · 3 answers · asked by Bobby 3 in Medicine

but only one is shown. It also shows the acceleration of the box.
(a) Find the second force in unit-vector notation.
( N) i + ( N) j
(b) Find the second force as a magnitude and direction.
N, ° (counterclockwise from the +x-axis is positive)

2007-09-18 14:09:29 · 2 answers · asked by Wonder 2 in Physics

and what is better for a nice weather: a high dew point or a low?

Thank you in advance.

2007-09-18 14:06:50 · 6 answers · asked by Anonymous in Weather

find the side lengths of the largest garden wut is its area

2007-09-18 14:06:31 · 12 answers · asked by Shannon M 1 in Mathematics

2007-09-18 14:05:45 · 2 answers · asked by velumani d 1 in Geography

I know that there is evidence showing the universe is expanding. But is there any possibility that gravity could pull all the matter back to the center causing so much heat and energy that it could create another "big bang" and this is how the universe continues to live. Never dying, ever changing to stay alive?

2007-09-18 14:03:56 · 7 answers · asked by krismister06 1 in Astronomy & Space

called?

2007-09-18 14:01:35 · 3 answers · asked by Terri L 2 in Biology

then what are the length and width of the court?

2007-09-18 14:00:49 · 9 answers · asked by Lady E 1 in Mathematics

I am interested in knowing if laboratories are out there to which doctors can send hair samples (hopefully only the hair above the skin) to get results like the quantity of potassium.

A doctor gave such a test many years ago but maybe he did it with his own equipment. I'm aware that its results are not nearly as good as a blood test and I have already had blood drawn and am awaiting results.

Few such tests are typically given but a little surface hair would be so easy to give up that I'd like to know. David Letterman had his hair tested on one of his shows so its not unheard of.

2007-09-18 14:00:46 · 2 answers · asked by Robert B 5 in Medicine

skeleton?

2007-09-18 14:00:26 · 1 answers · asked by Terri L 2 in Biology

Thank you to those who answered my question about lightning going sideways.

Now that I know that, what things should (and shouldn't) I do during a period of lightning?

Is it safe to take a shower? Use electrical items?

I live in the Caribbean and we are getting alot of bad weather as it hurricane season.

Thanks.

2007-09-18 13:59:50 · 6 answers · asked by mixedmummy 2 in Weather

tubes?

2007-09-18 13:59:11 · 2 answers · asked by Terri L 2 in Biology

A 920 kg car is pulling a 290 kg trailer. Together, the car and trailer have an acceleration of 2.24 m/s2 in the forward direction. Neglecting frictional forces on the trailer, determine the following (including sign).

(c) the force exerted by the trailer on the car
____N
(d) the resultant force exerted by the car on the road
magnitude
____N
direction
____° measured from the left of vertically downwards

I am having trouble with these problems; can someone please explain how to do them\? thank you

2007-09-18 13:57:57 · 1 answers · asked by redblitz528 1 in Physics

and alveoli?

2007-09-18 13:57:43 · 2 answers · asked by Terri L 2 in Biology

1. An airplane has a mass of 29,000 kg and takes off under the influence of a constant net force of 45,000 N. What is the net force that acts on the plane's 80 kg pilot????
Why? How?

2. During a circus performance, a 71kg human cannonball is shot out of a 15m long cannon. If the human cannonball spends 0.82 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.

2007-09-18 13:57:07 · 1 answers · asked by gimp4102 1 in Physics

I inhaled this black smoke accidentaly and it made me cough like something ive never experienced before.

2007-09-18 13:54:50 · 6 answers · asked by Taylor M 1 in Other - Science

A jet accelerates from 15.98 m/s to 34.05 m/s in 12.90 seconds. The displacement (to the nearest meter) of the jet during this time interval is:

2007-09-18 13:50:09 · 2 answers · asked by ags101 2 in Physics

Whats everyone reading right now?

2007-09-18 13:50:03 · 2 answers · asked by Brandon C 1 in Other - Science

In the sum A+B =C ,vector A has a magnitude of 13.5 m and is angled 38.0° counterclockwise from the +x direction, and vector C has a magnitude of 14.0 m and is angled 13.4° counterclockwise from the -x direction.

What are (a) the magnitude and (b) the angle (relative to +x) of B? State your angle as a positive number.

2007-09-18 13:48:31 · 1 answers · asked by Anonymous in Physics

2007-09-18 13:45:32 · 8 answers · asked by Anonymous in Mathematics

2007-09-18 13:45:29 · 2 answers · asked by mandy 1 in Mathematics

2007-09-18 13:43:29 · 3 answers · asked by dch8334 1 in Mathematics

Two trains, one traveling at 64.00 km/h and the other at 128.00 km/h, are headed toward one another along a straight, level track. When they are 736 m apart, each engineer sees the other's train and applies the brakes. What acceleration do the two trains need to have to stop exactly in a distance of 736 m?

2007-09-18 13:43:27 · 3 answers · asked by Ryan 1 in Physics

Can someone give me ideas for a science fair projects, the ideas must be testable and have to do with phisical science for example which paper towel is stronger? Thank you for you help

2007-09-18 13:43:06 · 2 answers · asked by Anonymous in Other - Science

How come that the outermost part of our galaxy move at a faster speed than the law of gravity.

2007-09-18 13:42:30 · 6 answers · asked by Danny 2 in Astronomy & Space

Who thinks that global warming is extremely overratted?

2007-09-18 13:41:38 · 4 answers · asked by Anonymous in Earth Sciences & Geology

A red car moving at 44.7 mph passes a blue car moving at 30.7 mph. (Use 1609 meters = 1 mile when converting to meters/second.) Seeing a stopped car in his lane up ahead, the driver of the red car applies the brakes just as he passes the blue car which causes the red car to slow down to a stop by losing 4.36 m/s every second.



(a) How much time (in seconds) passes before the two cars are side-by-side once again?
s




(b) When the cars are finally side-by-side, how do their average speeds compare for the time you calculated above? Please explain fully.

2007-09-18 13:39:34 · 1 answers · asked by ags101 2 in Physics

i cant figure out this stupid problem. plz help me! i m using the distibutive property and i must show all work.

the directions say to simply the expression.

12a+3+18-9a=

2007-09-18 13:38:06 · 5 answers · asked by ringostarr9911 2 in Mathematics

2007-09-18 13:37:05 · 2 answers · asked by Anonymous in Earth Sciences & Geology

The answer is not what you think.

2007-09-18 13:35:20 · 3 answers · asked by Sneaky Snake 1 in Other - Science