Physics, 03.03.2020 00:54 ashleyfay6350

The radioactive element polonium decays according to the law given below where Q0 is the initial amount and the time t is measured in days. Q(t) = Q0 · 2-(t/140) If the amount of polonium left after 560 days is 80 mg, what was the initial amount present?

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 19:30, kordejah348

Why there is no inductive reactance in dc circuits

Answers: 1

continue

Physics, 22.06.2019 01:30, LarryJoeseph

Question 7 [2 marks] in the circuit below, the electromotive force generated by the battery is e = 6.0 v, and the resistances are r1 = r4 = 1.0 q, r2 = r3 =2.0 q. r. the power delivered by the battery to the circuit is closest to a. 6 w в. 12 w с. 15 w d. 18 w e. 20 w final exam autumn 2014 page 5 of 9 68037 physical modelling faculty of science [2 mark] question 8 with reference to question 7, the current through resistor r2 is closest to a. 1 a в. 2 а c. 3 a d. 4 a e. 6 a

Answers: 2

continue

Physics, 22.06.2019 07:50, babbybronx

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Answers: 1

continue

Physics, 22.06.2019 09:30, tsvijay121

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec

Answers: 3

continue

You know the right answer?

The radioactive element polonium decays according to the law given below where Q0 is the initial amo...