soemoe thu

b^2 B.4a+2b C.8ab D. a^2 b^2 E. None of them

1. 3+log_2⁡5=……..
   A.log_2⁡40 B.log_2⁡4 C.log_2⁡150 D. log_2⁡15 E.log_2⁡60
2. log⁡0.01=………
   A. 2 B. -2 C.1/2 D.-1/2 E.0
3. log_2⁡40+log_2⁡0.1+log_2⁡0.25=……….
   A. 0 B. 1 C.2 D. 3 E.4
4. log_2⁡〖2√2〗=………
   A. 2/3 B.1 C.1 1/2 D.-3/2 E.-2/3
5. log_(x-2)⁡(2x^2-10x+13) = 1; x=?
   A.-3 B.-5/2 C. 5/2 D. 2/5 E. 3 or5/2
6. If log⁡2=m , then log_8⁡5 =………
   A. (1-m)/3m B.1/3m C. (3-m)/m D. (1-m)^3 E.(3-m)/m
   mass of a boy is measured by a ……… . 19.balance
7. One metre is equal to …….km. 20.10-3
8. Elementary particles have the ……… size. 21.smallest
   22.The earth can be regarded as a ………. . 22.clock
9. The age of universe is ……… s. 23.2 x 1018
   24…….. is the language of physics. 24.Mathematics
10. There are ……. seconds in one year. 25.3.17 x 107
11. The size of the universe is ……… time larger than that of an elementary particle. 26.1041
12. A 45 mih-1 is equal to …….. fts-1. 27.66
    28.A metre stick is …. than the yard stick. 28.longer
13. One gram is equal to …. kg. 29.10-3
14. Physics is the subject which studies ………. phenomena. 30.natural