Planet Krypton has 4 times the radius and 2 times the mass of the Earth What is the best estimate for the magnitude of the gravitational field at the surface of planet Krypton?
n
Choose 1 answer.
T
o
m
1.25
10
P
te
t
2.5
h

Use the periodic table and your knowledge of isotopes to complete these statements. when polonium-210 emits an alpha particle, the child isotope has an atomic mass of 1-131 undergoes beta-minus decay. the chemical symbol for the new element is fluorine-18 undergoes beta-plus decay. the child isotope has an atomic mass of done intro donne