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?

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

force tends to be low and long diustance masses are high

the inner core.

good luck: )

klicker