Poll

What is your overall opinion on Barack Obama's tenure as president?
Excellent
Good
Neither good nor bad
Bad
Terrible
If you would like to vote in this poll, please login or register

Previous poll results: Do you believe in global warming?
New Topic  
ppk
wrote...
*
Posts: 3560
Credits: 4940
4 years ago
Sound vibrations with frequencies less than 20 Hz are called
A) infrasonics.
B) ultrasonics.
C) supersonics.
D) infrared.
E) megasonics.
Read 1692 times
1 Reply
replies
Answer accepted by topic starter
wrote...
*
*
Posts: 19584
Credits: 4478
4 years ago
To view this post and more
You'll need to login or register
A
✓ Don't be mean, we need followers on Twitter too! Slight Smile
New Topic      
This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.

Control Panel

Post homework questions online and get free homework help from tutors.
There are currently 237 guests browsing and 11 members online. So far today, 428 students have registered.
Ask a Question Add Gallery Image Add New Term
Dictionary
Search Images
Free PubMed Mathematics Tools Arcade
Related Images
1196
0
04/26/12

576
0
04/29/12

713
0
11/11/12