Ask an Expert: Grades 9-12: Physical Science

Grades 9-12: Physical Science

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Magnets.

Last post by edneu3 « Thu Oct 18, 2012 8:57 am
Replies: 1
by kinpin555 » Wed Oct 17, 2012 12:17 pm

1 Replies

6382 Views

Last post by edneu3
Thu Oct 18, 2012 8:57 am
how does a hemispherical lens focus parallel light rays

Last post by wendellwiggins « Wed Oct 17, 2012 9:12 am
Replies: 1
by yesiamsumit » Mon Oct 15, 2012 2:34 am

1 Replies

2639 Views

Last post by wendellwiggins
Wed Oct 17, 2012 9:12 am
Active Vibration Control Piezo System?

Last post by wendellwiggins « Sun Oct 14, 2012 11:34 am
Replies: 4
by gsjbjt » Sun Oct 07, 2012 7:50 pm

4 Replies

8349 Views

Last post by wendellwiggins
Sun Oct 14, 2012 11:34 am
military technology

Last post by John Dreher « Sat Oct 13, 2012 8:06 am
Replies: 2
by thatcoolguy26 » Wed Oct 10, 2012 9:46 am

2 Replies

3120 Views

Last post by John Dreher
Sat Oct 13, 2012 8:06 am
Crystal Chemistry

Last post by wendellwiggins « Thu Oct 11, 2012 9:30 am
Replies: 1
by lrb » Tue Oct 09, 2012 1:49 pm

1 Replies

3072 Views

Last post by wendellwiggins
Thu Oct 11, 2012 9:30 am
robotics

Last post by Ray Trent « Mon Oct 08, 2012 10:45 pm
Replies: 9
by m.khan98 » Fri Sep 28, 2012 4:53 pm

9 Replies

6888 Views

Last post by Ray Trent
Mon Oct 08, 2012 10:45 pm
Which lens(or lens arrangement) focuses parallel rays from a

Last post by John Dreher « Mon Oct 08, 2012 12:50 pm
Replies: 2
by yesiamsumit » Sun Oct 07, 2012 11:49 am

2 Replies

3065 Views

Last post by John Dreher
Mon Oct 08, 2012 12:50 pm
Agrisept-L Testing as an Algeacide

Last post by Goldenzenith « Sun Oct 07, 2012 4:04 pm
Replies: 2
by bobbyo » Wed Oct 03, 2012 9:56 am

2 Replies

3396 Views

Last post by Goldenzenith
Sun Oct 07, 2012 4:04 pm
sience fair help

Last post by Goldenzenith « Sun Sep 30, 2012 3:11 pm
Replies: 2
by cowsonice » Tue Sep 25, 2012 8:58 am

2 Replies

3122 Views

Last post by Goldenzenith
Sun Sep 30, 2012 3:11 pm
Wave interference

Last post by Craig_Bridge « Thu Sep 27, 2012 2:21 pm
Replies: 4
by islamfaisal » Tue Sep 18, 2012 3:31 am

4 Replies

3890 Views

Last post by Craig_Bridge
Thu Sep 27, 2012 2:21 pm
How Does LED Brightness Vary with Current?

Last post by Ustonn « Thu Sep 27, 2012 4:19 am
Replies: 6
by Ivo » Wed Jan 19, 2011 2:53 pm

6 Replies

6135 Views

Last post by Ustonn
Thu Sep 27, 2012 4:19 am
Specific gravity of ethanol concentrations

Last post by wendellwiggins « Tue Sep 25, 2012 2:45 pm
Replies: 1
by markfordyce » Tue Sep 25, 2012 5:43 am

1 Replies

8546 Views

Last post by wendellwiggins
Tue Sep 25, 2012 2:45 pm
Science Fair

Last post by edneu3 « Thu Sep 20, 2012 9:01 am
Replies: 1
by Sciencefanatic » Wed Sep 19, 2012 9:48 pm

1 Replies

2578 Views

Last post by edneu3
Thu Sep 20, 2012 9:01 am
Choosing a topic... (Engineering)

Last post by theborg « Sat Sep 15, 2012 11:42 am
Replies: 2
by emmerai » Thu Sep 13, 2012 5:58 pm

2 Replies

2705 Views

Last post by theborg
Sat Sep 15, 2012 11:42 am
how to do.... optics and trigonometry.... help please!!

Last post by Craig_Bridge « Fri Sep 14, 2012 11:31 am
Replies: 4
by cloeclifton » Tue Sep 04, 2012 6:14 pm

4 Replies

3775 Views

Last post by Craig_Bridge
Fri Sep 14, 2012 11:31 am
PLEASE HELP DUE TOMORROW!!!!!!!!!!!!!!!!!!

Last post by Goldenzenith « Sun Sep 09, 2012 2:25 pm
Replies: 4
by pinkbear » Thu Aug 30, 2012 12:50 pm

4 Replies

3789 Views

Last post by Goldenzenith
Sun Sep 09, 2012 2:25 pm
Snell's Law help plz.....

Last post by Goldenzenith « Sun Sep 09, 2012 2:05 pm
Replies: 3
by cloeclifton » Wed Sep 05, 2012 5:57 pm

3 Replies

4402 Views

Last post by Goldenzenith
Sun Sep 09, 2012 2:05 pm
Strings vs. Temperature

Last post by Craig_Bridge « Tue Sep 04, 2012 2:24 pm
Replies: 2
by sweetsilence » Fri Aug 24, 2012 8:34 pm

2 Replies

3543 Views

Last post by Craig_Bridge
Tue Sep 04, 2012 2:24 pm
Molar volume of gas under pressure

Last post by Craig_Bridge « Fri Aug 24, 2012 8:26 am
Replies: 11
by WFvolc » Fri Aug 03, 2012 6:38 am

11 Replies

5824 Views

Last post by Craig_Bridge
Fri Aug 24, 2012 8:26 am
How to Work Rectifiers

Last post by k4gfwgerry « Wed Aug 22, 2012 4:58 pm
Replies: 1
by love_dust2 » Wed Aug 22, 2012 7:57 am

1 Replies

2770 Views

Last post by k4gfwgerry
Wed Aug 22, 2012 4:58 pm
I need a science project idea.

Last post by donnahardy2 « Mon Aug 20, 2012 9:23 am
Replies: 2
by addey411 » Sat Aug 18, 2012 12:34 pm

2 Replies

3060 Views

Last post by donnahardy2
Mon Aug 20, 2012 9:23 am
Help needed to instruct potato radio building

Last post by k4gfwgerry « Wed Aug 15, 2012 4:00 pm
Replies: 1
by Luize » Sun Aug 12, 2012 3:39 am

1 Replies

8691 Views

Last post by k4gfwgerry
Wed Aug 15, 2012 4:00 pm
effect of temperature on gas pressure

Last post by John Dreher « Sat Aug 04, 2012 3:44 pm
Replies: 1
by WFvolc » Fri Aug 03, 2012 7:29 am

1 Replies

2561 Views

Last post by John Dreher
Sat Aug 04, 2012 3:44 pm
Electricity from lightning

Last post by zafe « Fri Aug 03, 2012 3:36 am
Replies: 3
by zafe » Thu Aug 02, 2012 4:42 am

3 Replies

3834 Views

Last post by zafe
Fri Aug 03, 2012 3:36 am
measuring surface warming during condensation

Last post by wendellwiggins « Sat Jul 28, 2012 12:17 pm
Replies: 8
by squnkus » Mon May 14, 2012 1:49 pm

8 Replies

5613 Views

Last post by wendellwiggins
Sat Jul 28, 2012 12:17 pm
plastic decompositions

Last post by k4gfwgerry « Wed Aug 01, 2012 4:22 pm
Replies: 1
by puljan » Fri Jul 27, 2012 1:20 am

1 Replies

3026 Views

Last post by k4gfwgerry
Wed Aug 01, 2012 4:22 pm
Ion Engine

Last post by wendellwiggins « Wed Jul 25, 2012 6:57 am
Replies: 1
by DeadArby5 » Sun Jul 22, 2012 1:31 am

1 Replies

3573 Views

Last post by wendellwiggins
Wed Jul 25, 2012 6:57 am
Windmill

Last post by rbnbady « Sun Jul 22, 2012 7:42 am
Replies: 3
by rbnbady » Fri Jul 20, 2012 7:33 am

3 Replies

4591 Views

Last post by rbnbady
Sun Jul 22, 2012 7:42 am
A simple question for a science fair project.

Last post by John Dreher « Sat Jul 21, 2012 4:52 pm
Replies: 3
by blair » Thu Jul 12, 2012 12:02 am

3 Replies

3714 Views

Last post by John Dreher
Sat Jul 21, 2012 4:52 pm
Building simple submarines - URGENT! HELP WANTED!

Last post by John Dreher « Sat Jul 21, 2012 4:46 pm
Replies: 1
by Parab » Wed Jul 18, 2012 2:03 am

1 Replies

4408 Views

Last post by John Dreher
Sat Jul 21, 2012 4:46 pm
Control for vitamin C project

Last post by MelissaB « Mon Jul 23, 2012 6:15 am
Replies: 1
by Wendy11221122 » Thu Jul 19, 2012 3:52 am

1 Replies

34026 Views

Last post by MelissaB
Mon Jul 23, 2012 6:15 am
thermochem

Last post by wendellwiggins « Wed Jul 18, 2012 1:39 pm
Replies: 1
by chq14 » Mon Jul 16, 2012 7:22 pm

1 Replies

2294 Views

Last post by wendellwiggins
Wed Jul 18, 2012 1:39 pm
Set-up for Young's Double-Slit Experiment

Last post by wendellwiggins « Tue Jul 17, 2012 9:20 am
Replies: 8
by harry14 » Sun Jun 24, 2012 7:56 am

8 Replies

8142 Views

Last post by wendellwiggins
Tue Jul 17, 2012 9:20 am
please help me out

Last post by wendellwiggins « Tue Jul 10, 2012 4:50 pm
Replies: 1
by renei » Mon Jul 09, 2012 5:56 am

1 Replies

2408 Views

Last post by wendellwiggins
Tue Jul 10, 2012 4:50 pm
Using Bridge Full-Wave Rectifier

Last post by rmarz « Wed Jul 04, 2012 7:47 pm
Replies: 1
by love_dust2 » Wed Jul 04, 2012 8:23 am

1 Replies

4562 Views

Last post by rmarz
Wed Jul 04, 2012 7:47 pm
intel STS project eligibility

Last post by amyc « Mon Jul 02, 2012 8:14 am
Replies: 3
by wendeli » Sat Jun 30, 2012 2:17 am

3 Replies

6098 Views

Last post by amyc
Mon Jul 02, 2012 8:14 am
technology

Last post by donnahardy2 « Sun Jul 01, 2012 10:07 am
Replies: 2
by maestro17 » Fri Jun 29, 2012 6:47 am

2 Replies

3083 Views

Last post by donnahardy2
Sun Jul 01, 2012 10:07 am
Simple Electric Motor

Last post by Craig_Bridge « Wed Jun 27, 2012 5:58 pm
Replies: 2
by aublysodon » Sat Jun 23, 2012 11:25 pm

2 Replies

5470 Views

Last post by Craig_Bridge
Wed Jun 27, 2012 5:58 pm
Understanding Fluids and energy

Last post by Craig_Bridge « Wed Jun 27, 2012 5:49 pm
Replies: 2
by scitist » Sat Jun 23, 2012 9:50 am

2 Replies

2787 Views

Last post by Craig_Bridge
Wed Jun 27, 2012 5:49 pm
caustic corrosion

Last post by Craig_Bridge « Wed Jun 27, 2012 5:01 pm
Replies: 5
by farhad.dan » Sat Jun 16, 2012 11:15 pm

5 Replies

10777 Views

Last post by Craig_Bridge
Wed Jun 27, 2012 5:01 pm
Proper Form of Zinc Oxide as a Piezoelectric Material

Last post by wendellwiggins « Sat Jun 23, 2012 9:40 am
Replies: 1
by love_dust2 » Fri Jun 22, 2012 10:29 pm

1 Replies

2999 Views

Last post by wendellwiggins
Sat Jun 23, 2012 9:40 am
Project Idea (Electronics or about Science)

Last post by John Dreher « Sat Jun 16, 2012 8:27 pm
Replies: 1
by acsci_researchers » Fri Jun 15, 2012 2:49 am

1 Replies

2945 Views

Last post by John Dreher
Sat Jun 16, 2012 8:27 pm
Science fair project idea!

Last post by theborg « Wed Jun 06, 2012 2:40 pm
Replies: 1
by Heshani » Tue Jun 05, 2012 10:28 pm

1 Replies

3603 Views

Last post by theborg
Wed Jun 06, 2012 2:40 pm
Extracting iron from cereal project

Last post by wendellwiggins « Tue Jun 05, 2012 9:26 am
Replies: 1
by Wendy11221122 » Mon Jun 04, 2012 3:20 am

1 Replies

4656 Views

Last post by wendellwiggins
Tue Jun 05, 2012 9:26 am
How to build a solid-fuel rocket

Last post by theborg « Mon Jun 04, 2012 10:51 pm
Replies: 10
by harry14 » Sat May 26, 2012 7:06 am

10 Replies

12091 Views

Last post by theborg
Mon Jun 04, 2012 10:51 pm
Convection Currents

Last post by John Dreher « Sat May 19, 2012 8:58 pm
Replies: 5
by squnkus » Fri Mar 02, 2012 8:54 pm

5 Replies

40222 Views

Last post by John Dreher
Sat May 19, 2012 8:58 pm
Help with finding generator

Last post by degreeofawsumness « Wed May 16, 2012 3:18 am
Replies: 2
by colinglancy » Sun May 13, 2012 8:31 am

2 Replies

18400 Views

Last post by degreeofawsumness
Wed May 16, 2012 3:18 am
Help with Newtons Laws

Last post by Goldenzenith « Sun May 13, 2012 6:28 am
Replies: 4
by nobitchh95 » Tue May 08, 2012 11:54 pm

4 Replies

5548 Views

Last post by Goldenzenith
Sun May 13, 2012 6:28 am
vapour density

Last post by Goldenzenith « Sun May 13, 2012 6:09 am
Replies: 2
by sagoyal1997 » Thu May 03, 2012 7:54 am

2 Replies

3873 Views

Last post by Goldenzenith
Sun May 13, 2012 6:09 am
Help with Propagating Errors

Last post by donnahardy2 « Sat May 12, 2012 6:40 pm
Replies: 15
by jane b » Sun May 06, 2012 12:07 pm

15 Replies

10961 Views

Last post by donnahardy2
Sat May 12, 2012 6:40 pm

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