- #1
roy219
- 11
- 0
1. http://i159.photobucket.com/albums/t152/roy219_2007/DSC04589.jpg,
2.http://i159.photobucket.com/albums/t152/roy219_2007/DSC04590.jpg,
3.http://i159.photobucket.com/albums/t152/roy219_2007/DSC04591.jpg
http://i159.photobucket.com/albums/t152/roy219_2007/DSC04593-2.jpg
2. ft=mv-mu, mgsinX
3. for question 18, i know statement 2. when the angle decrease, mgsinX will be smaller so there is a force rise the block. for the statement one and two, i have no ideas ><
the second question is asked about resultant force. in fact, i just know it is a constant force. however, i don't know how to read these graphs.
the last question, i know water wave travel from shallow to deep region, its wavelength and velocity will change, and only frequency will stay the same, isn't it? but the ans is a both statements are correct..thy? >_<
2.http://i159.photobucket.com/albums/t152/roy219_2007/DSC04590.jpg,
3.http://i159.photobucket.com/albums/t152/roy219_2007/DSC04591.jpg
http://i159.photobucket.com/albums/t152/roy219_2007/DSC04593-2.jpg
2. ft=mv-mu, mgsinX
3. for question 18, i know statement 2. when the angle decrease, mgsinX will be smaller so there is a force rise the block. for the statement one and two, i have no ideas ><
the second question is asked about resultant force. in fact, i just know it is a constant force. however, i don't know how to read these graphs.
the last question, i know water wave travel from shallow to deep region, its wavelength and velocity will change, and only frequency will stay the same, isn't it? but the ans is a both statements are correct..thy? >_<