GEOG 2051 Chapter : 10-Feb

Consider the ß-decay 12N7 ? AXZ + ß +
What is the value of Z (atomic number)
and A (mass number)?

1. Z = 8, A = 14

2. Z = 8, A = 12

3. Z = 8, A = 10

4. Z = 7; A = 14

5. Z = 7, A = 10

6. Z = 6; A = 12

7. Z = 7; A = 12

8. Z = 6, A = 13

9. Z = 6, A = 14

10. Z = 6, A = 10

6. A uniform 1 T magnetic field is directed vertically downward ina region of space. A proton traveling 10^5 m/s in a horizontalplane and aimed northward enters this region. The initialacceleration of the proton is:

a. 1.6 x 10^-14 m/s^2 westward

b. b. 9.6 x 10^12 m/s^2 eastward

c. 1.6 x 10^-14 m/s^2 eastward

d. 9.6 x 10^12 m/s^2 westward

What is the total energy of an electron moving with a speedof0.95c?
A) 2.6 x 10^-13 J
B) 8.2 x 10^-14 J
C) 1.1 x 10^-13 J
D) 1.2 x 10^-14 J