Half life of 238U92 against alpha decay is 4.5 × 10*9 years . Calculate the activity of 1 g sample of 238U92 ?

answer:

Uranium-238

General

Natural abundance99.2745%

Half-life4.468 billion years

Parent isotopes242Pu (α) 238Pa (β−)

Decay products234Th

Explanation:

wavelength variability is the right one

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft