物理新校园总复习答案（Physics new campus review answers）.docVIP

物理新校园总复习答案（Physics new campus review answers） 2011 junior high school physics new campus review, refer to the answer Motion of bodies First, the multiple-choice question Title number 1234567 The answer is D C B D D D D Understanding and Application 8., 1.7 * 108; 7 * 10-3; 28.8; 10; 1.8 9.180; 50 10., 2.31 to 2.35, 2.2 to 2.4 Eighty II.; 18.23 1.8m/s 30; Experiment and inquiry 15.12.50; 0.125 16. scale and stopwatch Measure the length of sanitary incense with a graduated ruler L1 Ignition time, health incense time, t, put out Determine the length of incense after burning, L2 Expression: V = (L1L2) /t Analysis and calculation 17.30km 18.. (1) the whole running time of the train is: The average speed of trains is: (2) the questions that may be raised are: what is the average speed from the Guilin to the south of Guilin? Answer： Acoustic phenomena First, the multiple-choice question The title number is 9 The answer is D C B C D A B B D Two, understanding and Application 10. vibrations; tones 11. B; C; A 12. different; 340; 1020 13. tone Three, experiment and exploration 14. the greater the amplitude, the greater the loudness 15. (1) and low (2) control variables (3) change the chord changes tone (4) choose the same thickness of different length of string, the string around the end node in the legs of the table, the other end of the table around the small pulley, hanging on the same hook code, make it tight on the desktop in the middle of a plastic ruler, pluck a string, the string sound. 16. (1) 0.0220 (2) 7500m 8700m (3) not. Because the moon is near the surface of the vacuum, vacuum is not sound. Four 、 Analysis and calculation 17. 11.78s 18. 620m Light phenomenon First, the multiple-choice question Title numberThe answer is A A B A C D A D Two, understanding and Application 9. light travels in a straight line; the reflection of light; the refraction of light 10.60 degrees; 80 degrees 11. red light 12. lines; diffuse reflection 13. red, green, blu