Which statement accurately describes the use of radioactive decay?
Technetium-99 is used as a radioactive tracer because it remains in the body for a long time.
Some types of cancer cells are killed by directing alpha rays at the tumor from outside the body.
Plants utilize radioisotopes in the same way they use nonradioisotopes because they are chemically identical.
Geologists and archaeologists use different dating processes to determine the age of rocks, fossils, and ancient artifacts.
Answers: 3
Physics, 21.06.2019 14:50
Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire
Answers: 2
Physics, 21.06.2019 21:40
Since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of "if…then…because…” when writing your hypothesis.
Answers: 1
Physics, 22.06.2019 09:00
Sobre transformações cíclicas, são feitas algumas afirmações, determine quais estão corretas. i – a variação de energia interna em uma transformação cíclica é nula; ii – o trabalho, em uma transformação cíclica, é sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cíclica é, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocórica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
Answers: 1
Which statement accurately describes the use of radioactive decay?
Technetium-99 is used as a radi...
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