Constants

Question 1

speed of light (C)

Answer 1

C=3 x 10^8 m/sec

Question 2

1 roentgen in air (C/kg)

Answer 2

2.58 x 10^-4 c/kg

Question 3

1 eV (J)

Answer 3

1.6 x 10^-19 J

Question 4

Avogadros #

Answer 4

6.025 x 10^23

Question 5

1 amu (kg)

Answer 5

1.66 x 10^-27 kg

Question 6

1 Ci (dps)

Answer 6

3.7 x 10^10 dps

Question 7

Planck’s constant (J/sec)

Answer 7

6.62 x 10^-34 J/sec

Question 8

1 kg (lbs)

Answer 8

2.2 lbs

Question 9

1 cm lead (cerrobend)

Answer 9

1.2 cm cerrobend