7.ข้อสอบ A-NET วิทยาศาสตร์_ฟิสิกส์ปี 2550

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  • 8/10/2019 7. A-NET _ 2550

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    A-NET 15 () 2550

    25 (1 - 25) 4

    25

    g = 2m/s80.9

    c = m/s103 8

    h = J.s106.6 34 R = J/K.mol3.8

    e = C106.1

    19

    1 eV = J106.119

    f =2

    21

    0r

    qq

    4

    1

    229

    0

    C/mN1094

    1=

    g/mole32.012.0,4.0,2..0,OC,He,,H22

    e = 2.71828

    3.14159=

    0.4343elog10 = 0.3012log10 = 0.4773log

    10 = 0.6995log

    10 =

    2

    130sin =o

    2

    145sin =o

    2

    360sin =o

    ++=+

    a

    btanatctsinbatcosbtsina

    22

    1. 5 12 10

    5 N

    o

    90

    10 kg 12 N

    1.2

    m/s7.0 2.2

    m/s.21

    3. 2m/s.31 4. 2m/s7.1

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    2. 1000 72 / 10 1. 1,000 N 2. 2,000 N

    3. 3,600 N 4. 7,200 N

    3. 1. 2.

    3. 4.

    4. W

    g

    T

    o30

    1.3

    W 2. W3

    3. W2 4.2

    W

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    3/7

    uu uu

    5. m

    M m M m

    1. u 2.

    M

    m2Mu

    3.

    M

    mMu 4.

    M

    Mm2u

    6. 500 .() 2 6 /

    6,750 1. 2 rad / s 2. 3 rad / s

    3. 4 rad / s 4. 5 rad / s

    7. 101010 ( 1,025 /) ( 1,000 /)1. 2. 0.25 cm3. 1.025 cm 4.

    8. 1 80 10109 / 45 1. 0.04 mm 2. 0.4 mm

    3. 4 mm 4. 40 mm

    9. A P

    2

    A ( )

    1.2

    2

    3P 2. 2

    2

    1P

    3.2

    2

    1P + 4. 22

    3P +

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    4/7

    nm4402=

    10. 1 440 580 1.12

    1 = 580 nm 1.12 cm

    2.00 m

    1. 40 2. 400

    3. 4,000 4. 40,000

    11. o45 o30

    1.

    2

    1sin

    1- 2. ( )2sin -1

    3. ( )2tan -1 4.

    2

    1tan

    1-

    12. 5 100 1 1. 93 dB 2. 83 dB

    3. 60 dB 4. 20 dB

    13. 1,920 2,240

    640 / 1. 0.5 m 2. 1.0 m

    3. 1.5 m 4. 2.0 m

    14. 5

    6103 /

    1.3

    103.8 C 2. 3107.1 C

    3.6

    107.1 C 4. 9103.8 C

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    15. I 1. 2. 3. 4.

    16. I

    1.0

    22

    VL

    1

    R

    1

    +

    2.0

    22

    VL

    1

    R

    1

    3.

    ( ) 22

    0

    LR

    V

    + 4.

    ( )22

    0

    LR

    V

    17. SW A B

    1.

    C

    q

    3

    1 0 2.

    C

    q

    2

    1 0

    3.C

    q

    3

    2 0 4.

    C

    q0

    18. I 1. 0.48 A

    2. 0.83 A

    3. 1.25 A

    4. 2.08 A

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    19. 15 22 42 = 4.2 /. 1 - 5 1. 0.18 2. 1.20 3. 1.75 4. 2.50

    20. 30 18 / 4.2 1. 40% 2. 50%

    3. 60% 4. 70%

    21. 350 148 1. 202 J 2. 202 J3. 498 J 4. 498 J

    22. 3 1

    1. J10111 2. J101 8

    3. J1033 4. J109 5

    23. 1.0 2.0 1.5 1. 2.5 eV 2. 3.0 eV

    3. 3.5 eV 4. 4.0 eV

    24. -210 138

    HePbPo 422068221084 + 4108 276 1. 1.2 mg 2. 1.6 mg

    3. 2.4 mg 4. 4.8 mg

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    7/7

    r

    r

    25. ( )Er

    ( )Br

    1. P 2.

    P

    Er

    Er

    3. P 4.

    Er

    P

    Br

    r

    r

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