The earth can be regarded as a ………. . 22.clock
- The age of universe is ……… s. 23.2 x 1018
24…….. is the language of physics. 24.Mathematics - There are ……. seconds in one year. 25.3.17 x 107
- The size of the universe is ……… time larger than that of an elementary particle. 26.1041
- A 45 mih-1 is equal to …….. fts-1. 27.66
28.A metre stick is …. than the yard stick. 28.longer - One gram is equal to …. kg. 29.10-3
- Physics is the subject which studies ………. phenomena. 30.natural
Key>>>
1.unit 2. standard 3. basic 4.derived 5. FPS 6.time
7.gram 8. length 9.m^210. British system 11. 5.068 × 〖10〗^3
1.vector 2. force 3. zero 4.force 5. vector component 6.opposite
7.cector 8. scalar 9. same 10. opposite 11. magnitudes 12. vector
- displacement 14.vector 15. scalar 16. resultant 17. resultant 18. resolution of a vector 19. arrow 20. different 21. same
- greater 23. resultant 24. 13N 25. 70.71 units
True\False
1.A physical quantity which has direction as well as magnitude