Science & Mathematics - 5 November 2006

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what is the average force exerted by the plate on the ball during the impact?

A 5.00kg steel ball is dropped onto a copper plate from a height of 10.0m.the ball leaves a dent 3.20 mm deep.

2006-11-05 05:06:19 · 2 answers · asked by reem h 2 in Physics

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What kind of accidents can happen in a scientific lab?

I'm looking for explosive accidents if possible.
Like a micromave exploding or something like that...

This is as background search for an essay

2006-11-05 05:05:27 · 5 answers · asked by JarJar Odd 2 in Other - Science

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why is an internal standard used and in what ways does it improve the quantitative methodology?

and why has benzene used in this case?

2006-11-05 05:03:09 · 2 answers · asked by mask 1 in Chemistry

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I need help with a calculus problem?

The amount of cubic feet of water in a tank "t" minutes after it has started to drain is given by G=125(t-25)^2

At what rate did the water flows out during the first 10 minutes?
At what rate is the water running out at the end of 10 minutes?

2006-11-05 05:02:48 · 5 answers · asked by al33191 1 in Mathematics

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what is the kinetic energy at this time?find the total work done on the object if its velocity changes (8i+4j)

A 3.00 kg abject has a velocity(6.00i-2.00j)m/s.

2006-11-05 05:01:43 · 2 answers · asked by reem h 2 in Physics

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what element would you most like to control(fire, water, air, earth or lightning)?

lightning is the fifth element!

2006-11-05 05:01:29 · 16 answers · asked by NS*whizzkid 1 in Physics

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If you dive from a 3 ft diving block and enter the water at 4 ft from the base of the wall. How far do you?

jump altogether? The answer I got is 5 ft based on Pythagorean theorm a^2+b^2=c^2. But... what is someone else dives at the same angle and enters the water 6 ft. from the base of the wall. How high would their diving block be? It can't be the same height to maintain the same angle. How do I figure this out?

2006-11-05 04:59:34 · 2 answers · asked by virgil m 1 in Physics

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What could be causing blowing out of fuses 20Amp. in an Atlantis compressor (Copelametic)?

This is a Dental air compressor.

2006-11-05 04:58:26 · 2 answers · asked by Pedro B 1 in Engineering

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Aromaticity - huckel's rule & whether or not something is planar?

huckel's rule applies to aromatic & antiaromatic compounds, but the compound is nonaromatic when its not planar. how do i know if it's planar just by looking at it? what about ions?

2006-11-05 04:56:09 · 2 answers · asked by buffy t 1 in Chemistry

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To which major group of biomolecules does an enzyme belong?

2006-11-05 04:55:09 · 3 answers · asked by vicky p 1 in Biology

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if, just for fun, you're swimming in the rio bravo (between mexico and USA), in which country are you?

2006-11-05 04:53:24 · 2 answers · asked by John L 1 in Geography

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how many meters does 8 kilemeters equal?

2006-11-05 04:51:08 · 18 answers · asked by Anonymous in Mathematics

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What happens to the peroxidase as a result of the chemical reation?

2006-11-05 04:48:33 · 1 answers · asked by swimmertommy 1 in Biology

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To which major group of biomolecules does an enzyme belong?

2006-11-05 04:47:16 · 2 answers · asked by swimmertommy 1 in Biology

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Can anyone give me an in-depth description of the location of Argentina?

2006-11-05 04:44:21 · 5 answers · asked by Mac 3 in Geography

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2^n = 9^2 solve for n?

This is for my kid. I couldn't do it. Please help!

2006-11-05 04:44:19 · 9 answers · asked by mammasmom 1 in Mathematics

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What happens to all of the matter and light that enters a black hole?

Does the black hole continue to increase in mass and increase the gravitational affect? Or does all that stuff get shot out in another direction? Do black holes ever die? And if so, what happens to them?

2006-11-05 04:42:42 · 7 answers · asked by timespiral 4 in Astronomy & Space

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Why are temperature graphs sinusoidal? (sin graphs)?

2006-11-05 04:37:45 · 1 answers · asked by mollysxs 1 in Earth Sciences & Geology

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Why are tide graphs sinusoidal? (sin graphs)?

2006-11-05 04:36:57 · 2 answers · asked by mollysxs 1 in Earth Sciences & Geology

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Is there any possible way that i can get a coffin placed in the ocean instead of a funeral home?

In the U.S

2006-11-05 04:36:43 · 5 answers · asked by Jasmine 3 in Earth Sciences & Geology

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What is Smog ?

2006-11-05 04:33:27 · 19 answers · asked by Anonymous in Weather

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if an engine must do 500 joules of work to pull a 10 kg load up to a height of 4 meters, what is the efficienc

2006-11-05 04:32:15 · 2 answers · asked by laura k 1 in Physics

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is there a phenomena like the northern lights that can be seen in the uk.?

2006-11-05 04:31:21 · 16 answers · asked by Anonymous in Astronomy & Space

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Two forces are acting simultaneously on an object. One force has a magnitude of 17 N, and is acting due north,

2006-11-05 04:30:43 · 3 answers · asked by Anonymous in Physics

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Name the quadrilateral which is a parallelogram with adjacent sides equal and all sides are right angles?

Name the quadrilateral which is a parrallelogram with four right angles?

2006-11-05 04:29:34 · 19 answers · asked by egrfethe 2 in Mathematics

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how can we define sound? does traveling light also produces sound?

2006-11-05 04:25:08 · 5 answers · asked by deejay 1 in Physics

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What happens if I go back in time and kill my other self?

If I went back in time and killed my younger self, what would happen. I would no longer exist in the future and therefore would be unable to go back in time to kill myself. But if I dont go back in time to kill my other self then I will continue to exist, and therefore able to go back in time to kill my younger self. Anyone else a bit confused?

2006-11-05 04:21:16 · 10 answers · asked by Wojciech S 2 in Physics

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