In a study of the conversion electrons emitted in a decay process, the following electron energies were measure (in kev): 207.4, 204.64, 193.36, 157.57, 154.81, 143.53, 125.10, 75.27, 49.03, 46.27, 34.99. the electron binding energies are known to be: 83.10 kev (k shell), 14.84 kev (l shell), 3.56 kev (m shell), and 0.80 kev (n shell). what is the minimum number of gamma-rays that can produce the observed electron groups, and what are the gamma-ray energies?

positive reinforcement? ?

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s