Energy problems
19.1f your object has a mass of 3kg and you hold it 3.5m above the earth's surface, what
objects potential energy?
al 10.5
b. 102.9)
c. 1.07)
d. 31.5)
hefort

B. 102.9

Explanation:

PE= mgh

PE= (3)(9.8)(3.5)

PE= 102.9

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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