Ask an Expert: Grades 9-12: Physical Science

Grades 9-12: Physical Science

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hcp and ccp holes! inorganic chemistry help please

Last post by tdaly « Fri Apr 01, 2016 8:13 am
Replies: 1
by shamyla99 » Thu Mar 31, 2016 10:09 pm

1 Replies

2194 Views

Last post by tdaly
Fri Apr 01, 2016 8:13 am
Very serious question.!

Last post by tdaly « Fri Apr 01, 2016 8:06 am
Replies: 1
by Unzumaki » Wed Mar 30, 2016 1:11 pm

1 Replies

1794 Views

Last post by tdaly
Fri Apr 01, 2016 8:06 am
Using a Digital Camera to Measure Skyglow

Last post by andrewjjolly « Wed Mar 30, 2016 9:59 am
Replies: 2
by andrewjjolly » Mon Mar 28, 2016 1:19 pm

2 Replies

2193 Views

Last post by andrewjjolly
Wed Mar 30, 2016 9:59 am
Please help ASAP- VERY URGENT!!!

Last post by norman40 « Wed Mar 30, 2016 7:15 am
Replies: 1
by SabreenAlam » Tue Mar 29, 2016 9:36 am

1 Replies

2152 Views

Last post by norman40
Wed Mar 30, 2016 7:15 am
Boosting the range of a WiFi router

Last post by JarvisVB « Wed Mar 30, 2016 1:28 am
Replies: 2
by JarvisVB » Tue Mar 29, 2016 4:12 pm

2 Replies

2882 Views

Last post by JarvisVB
Wed Mar 30, 2016 1:28 am
Need Guidance :?

Last post by norman40 « Sun Mar 27, 2016 3:34 pm
Replies: 1
by lunalovegood » Fri Mar 25, 2016 6:36 am

1 Replies

1817 Views

Last post by norman40
Sun Mar 27, 2016 3:34 pm
a battery that makes cents

Last post by norman40 « Sun Mar 27, 2016 2:25 pm
Replies: 1
by jayman0320 » Fri Mar 25, 2016 11:24 am

1 Replies

5038 Views

Last post by norman40
Sun Mar 27, 2016 2:25 pm
How to make a dissolved boron solution?

Last post by ChristineJensen « Mon Mar 21, 2016 12:42 am
Replies: 2
by lmurphy6 » Mon Mar 07, 2016 11:37 am

2 Replies

4088 Views

Last post by ChristineJensen
Mon Mar 21, 2016 12:42 am
Trouble with downloading G'MIC for "X-Ray Vision: Seeing into Space"

Last post by norman40 « Fri Mar 18, 2016 3:30 pm
Replies: 1
by beksicles » Wed Mar 16, 2016 7:23 pm

1 Replies

2433 Views

Last post by norman40
Fri Mar 18, 2016 3:30 pm
Phases in Chmistry

Last post by tdaly « Fri Mar 18, 2016 8:42 am
Replies: 1
by majaz » Thu Mar 17, 2016 10:07 am

1 Replies

1845 Views

Last post by tdaly
Fri Mar 18, 2016 8:42 am
Rocket Boosters/Thrusters on cars?

Last post by tdaly « Fri Mar 18, 2016 8:40 am
Replies: 1
by JosephTheDragonSlayingGenius » Wed Mar 16, 2016 10:07 am

1 Replies

2031 Views

Last post by tdaly
Fri Mar 18, 2016 8:40 am
The importance of finding the maximum absorbance of a colored solution

Last post by tdaly « Fri Mar 18, 2016 8:37 am
Replies: 1
by chem23 » Thu Mar 17, 2016 12:24 pm

1 Replies

2563 Views

Last post by tdaly
Fri Mar 18, 2016 8:37 am
titration equations/formulas for different acids?

Last post by norman40 « Tue Mar 15, 2016 4:33 pm
Replies: 16
by sagittaries » Thu Nov 12, 2015 5:46 pm

16 Replies

18032 Views

Last post by norman40
Tue Mar 15, 2016 4:33 pm
Gravity

Last post by Pradipbhattarai « Mon Mar 14, 2016 8:02 pm
Replies: 2
by Pradipbhattarai » Mon Mar 14, 2016 11:36 am

2 Replies

2489 Views

Last post by Pradipbhattarai
Mon Mar 14, 2016 8:02 pm
Servo Speed question

Last post by tomega3 « Mon Mar 14, 2016 9:00 am
Replies: 4
by tomega3 » Sat Mar 12, 2016 11:47 am

4 Replies

3790 Views

Last post by tomega3
Mon Mar 14, 2016 9:00 am
Programming a maze door

Last post by bfinio « Mon Mar 14, 2016 7:05 am
Replies: 4
by robotz » Wed Feb 17, 2016 10:34 am

4 Replies

4839 Views

Last post by bfinio
Mon Mar 14, 2016 7:05 am
Need help applying 4000 lbs of pressure

Last post by tdaly « Fri Mar 11, 2016 10:02 am
Replies: 1
by srpatel » Wed Mar 09, 2016 4:33 pm

1 Replies

2817 Views

Last post by tdaly
Fri Mar 11, 2016 10:02 am
Need idea about a project

Last post by williamcolocho « Tue Mar 08, 2016 4:42 pm
Replies: 1
by Ishtiaqesayed » Tue Mar 08, 2016 11:30 am

1 Replies

2062 Views

Last post by williamcolocho
Tue Mar 08, 2016 4:42 pm
Science project

Last post by williamcolocho « Tue Mar 08, 2016 4:33 pm
Replies: 1
by cayzeiv01 » Mon Mar 07, 2016 4:46 pm

1 Replies

1938 Views

Last post by williamcolocho
Tue Mar 08, 2016 4:33 pm
Calculate amount of vapour chemical to reach %LEL

Last post by Pirri « Mon Mar 07, 2016 11:32 pm
Replies: 2
by Pirri » Sun Mar 06, 2016 9:45 pm

2 Replies

2893 Views

Last post by Pirri
Mon Mar 07, 2016 11:32 pm
How to make a Metal Detector

Last post by solidpiper12 « Mon Mar 07, 2016 12:17 am
Replies: 2
by jaivk1802 » Sat May 26, 2012 6:02 am

2 Replies

8466 Views

Last post by solidpiper12
Mon Mar 07, 2016 12:17 am
Project of transmitting audio through a laser beam

Last post by Nibras « Sun Mar 06, 2016 11:36 am
Replies: 2
by Nibras » Sat Mar 05, 2016 3:38 am

2 Replies

3000 Views

Last post by Nibras
Sun Mar 06, 2016 11:36 am
How should I choose a topic for my science fair?

Last post by tdaly « Fri Mar 04, 2016 2:31 pm
Replies: 6
by DevDhruv » Mon Feb 22, 2016 3:38 pm

6 Replies

7728 Views

Last post by tdaly
Fri Mar 04, 2016 2:31 pm
Weight of air

Last post by norman40 « Thu Mar 03, 2016 2:51 pm
Replies: 1
by mjone44 » Thu Mar 03, 2016 2:05 pm

1 Replies

1846 Views

Last post by norman40
Thu Mar 03, 2016 2:51 pm
Calcium Purification

Last post by norman40 « Thu Mar 03, 2016 2:47 pm
Replies: 1
by fluffto » Wed Mar 02, 2016 12:02 pm

1 Replies

1942 Views

Last post by norman40
Thu Mar 03, 2016 2:47 pm
Water/Air reciprocating Machine.

Last post by norman40 « Thu Mar 03, 2016 2:42 pm
Replies: 3
by brainzlol » Wed Mar 02, 2016 2:32 am

3 Replies

2401 Views

Last post by norman40
Thu Mar 03, 2016 2:42 pm
Need help with science experiment!

Last post by ProjectEmerald « Thu Mar 03, 2016 11:31 am
Replies: 2
by ProjectEmerald » Wed Mar 02, 2016 3:27 pm

2 Replies

2072 Views

Last post by ProjectEmerald
Thu Mar 03, 2016 11:31 am
Colored laser light filter

Last post by norman40 « Wed Mar 02, 2016 6:30 pm
Replies: 1
by muser37 » Wed Mar 02, 2016 2:50 pm

1 Replies

2008 Views

Last post by norman40
Wed Mar 02, 2016 6:30 pm
Quantifying Overall Aggregation State of Colloidal Silver using a spectrophotometer

Last post by norman40 « Wed Mar 02, 2016 6:21 pm
Replies: 6
by ryanum » Wed Feb 24, 2016 2:07 pm

6 Replies

4125 Views

Last post by norman40
Wed Mar 02, 2016 6:21 pm
aerodynamics

Last post by williamcolocho « Tue Mar 01, 2016 8:29 pm
Replies: 1
by boltcam » Sat Feb 20, 2016 7:17 am

1 Replies

2129 Views

Last post by williamcolocho
Tue Mar 01, 2016 8:29 pm
Independent and Dependent Variable Help

Last post by norman40 « Mon Feb 29, 2016 4:40 pm
Replies: 1
by mjtb4 » Mon Feb 29, 2016 9:07 am

1 Replies

46781 Views

Last post by norman40
Mon Feb 29, 2016 4:40 pm
Acceleration

Last post by norman40 « Mon Feb 29, 2016 4:22 pm
Replies: 1
by jmoon91 » Mon Feb 29, 2016 2:02 am

1 Replies

1965 Views

Last post by norman40
Mon Feb 29, 2016 4:22 pm
Science Fair Help

Last post by theborg « Fri Feb 26, 2016 5:42 pm
Replies: 3
by doomlord » Mon Feb 08, 2016 4:32 pm

3 Replies

2847 Views

Last post by theborg
Fri Feb 26, 2016 5:42 pm
Thank you gift for mentor?

Last post by janet41 « Fri Feb 26, 2016 2:01 pm
Replies: 2
by janet41 » Mon Feb 22, 2016 9:27 pm

2 Replies

3099 Views

Last post by janet41
Fri Feb 26, 2016 2:01 pm
Servo motor signal wire trouble.

Last post by MadelineB « Wed Feb 24, 2016 8:32 pm
Replies: 3
by FatimaFatima » Thu Feb 04, 2016 3:19 am

3 Replies

3152 Views

Last post by MadelineB
Wed Feb 24, 2016 8:32 pm
Logic Gates and Transistors

Last post by tresspass123 « Wed Feb 24, 2016 2:44 am

by tresspass123 » Wed Feb 24, 2016 2:44 am

0 Replies

5822 Views

Last post by tresspass123
Wed Feb 24, 2016 2:44 am
Applying Darcy's law

Last post by norman40 « Tue Feb 23, 2016 9:17 am
Replies: 5
by jantjt120 » Sat Jan 30, 2016 3:39 pm

5 Replies

3179 Views

Last post by norman40
Tue Feb 23, 2016 9:17 am
Reactions that heat up water instantly

Last post by donnahardy2 « Sat Feb 20, 2016 8:15 am
Replies: 5
by jsjohnson09 » Sat Feb 13, 2016 6:27 am

5 Replies

3495 Views

Last post by donnahardy2
Sat Feb 20, 2016 8:15 am
Career Research Paper: Forensic Science Technician

Last post by tdaly « Fri Feb 19, 2016 11:49 am
Replies: 1
by meganp0826 » Thu Feb 18, 2016 8:48 am

1 Replies

2323 Views

Last post by tdaly
Fri Feb 19, 2016 11:49 am
Title for Science Fair

Last post by tdaly « Fri Feb 19, 2016 11:31 am
Replies: 1
by doomlord » Sat Feb 13, 2016 2:23 pm

1 Replies

2033 Views

Last post by tdaly
Fri Feb 19, 2016 11:31 am
See the Light by Making a Cell Phone Spectrophotometer HELP!

Last post by OliviaLynch « Thu Feb 18, 2016 4:49 am

by OliviaLynch » Thu Feb 18, 2016 4:49 am

0 Replies

2814 Views

Last post by OliviaLynch
Thu Feb 18, 2016 4:49 am
Pressure causing water to boil at a lower temperature

Last post by norman40 « Wed Feb 17, 2016 5:19 pm
Replies: 1
by siecos » Mon Feb 15, 2016 6:06 pm

1 Replies

2039 Views

Last post by norman40
Wed Feb 17, 2016 5:19 pm
See the Light by Making a Cell Phone Spectrophotometer Questions

Last post by norman40 « Mon Feb 15, 2016 1:43 pm
Replies: 5
by sophia2101 » Tue Dec 29, 2015 3:44 pm

5 Replies

2946 Views

Last post by norman40
Mon Feb 15, 2016 1:43 pm
What topic does Darcy's Law fall under?

Last post by norman40 « Mon Feb 15, 2016 8:25 am
Replies: 1
by jantjt120 » Sun Feb 14, 2016 4:29 pm

1 Replies

1861 Views

Last post by norman40
Mon Feb 15, 2016 8:25 am
HELP ASAP for solar furnace testing

Last post by donnahardy2 « Fri Feb 12, 2016 5:55 pm
Replies: 1
by mucbug » Tue Feb 02, 2016 8:56 am

1 Replies

2051 Views

Last post by donnahardy2
Fri Feb 12, 2016 5:55 pm
Changing the size of nanoparticles

Last post by norman40 « Fri Feb 12, 2016 4:02 pm
Replies: 8
by ryanum » Tue Feb 02, 2016 7:23 pm

8 Replies

5183 Views

Last post by norman40
Fri Feb 12, 2016 4:02 pm
Physics related with ecology

Last post by tdaly « Fri Feb 12, 2016 9:31 am
Replies: 1
by anachavezg » Mon Jan 25, 2016 7:30 pm

1 Replies

2273 Views

Last post by tdaly
Fri Feb 12, 2016 9:31 am
Trouble in squishy hand experiment

Last post by bfinio « Thu Feb 11, 2016 8:05 am
Replies: 6
by sidharth » Wed Nov 26, 2014 10:21 pm

6 Replies

4987 Views

Last post by bfinio
Thu Feb 11, 2016 8:05 am
Measuring Skyglow with a Digital Camera

Last post by norman40 « Mon Feb 08, 2016 5:41 pm
Replies: 1
by paulanordstrom » Mon Feb 08, 2016 2:45 pm

1 Replies

2047 Views

Last post by norman40
Mon Feb 08, 2016 5:41 pm
Water to Fuel to Water

Last post by norman40 « Mon Feb 08, 2016 5:27 pm
Replies: 1
by sleep191 » Sat Feb 06, 2016 5:00 pm

1 Replies

2513 Views

Last post by norman40
Mon Feb 08, 2016 5:27 pm

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