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Which of the following statements is(are) true of nuclear reactions?
a. The nucleus of an atom is transformed.b. The rate of reaction is not affected by changes in temperature and pressure.c. Great amounts of energy can be produced.d. All of the above are true.
Which of the following statements is(are) true of nuclear reactions?
a. The nucleus of an atom is transformed.b. The rate of reaction is not affected by changes in temperature and pressure.c. Great amounts of energy can be produced.d. All of the above are true.
Which of the following is true of alpha radiation?
a. It consists of negatively-charged particles.b. It consists of high-energy electromagnetic waves.c. It consists of positively-charged particles.d. None of the above
Which of the following is true of alpha radiation?
a. It consists of negatively-charged particles.b. It consists of high-energy electromagnetic waves.c. It consists of positively-charged particles.d. None of the above
Curium-242 decays by alpha emission to give plutonium-238. If blue spheres represent curium-242 and yellow spheres represent plutonium-238, how many half-lives have passed in the sample shown below?
Curium-242 decays by alpha emission to give plutonium-238. If blue spheres represent curium-242 and yellow spheres represent plutonium-238, how many half-lives have passed in the sample shown below?
A health professional administers a radiation source that gives 32 units of radiation at a distance of 1.0 meter. At what minimal distance from the source is the health care professional exposed to only 0.50 units of radiation?
A health professional administers a radiation source that gives 32 units of radiation at a distance of 1.0 meter. At what minimal distance from the source is the health care professional exposed to only 0.50 units of radiation?
Which of the following is true of nuclear fission reactions?
a. It is the joining together of light nuclei.b. A chain reaction is initiated by neutrons.c. These reactions take place on the sun.d. No waste products are created.
Which of the following is true of nuclear fission reactions?
a. It is the joining together of light nuclei.b. A chain reaction is initiated by neutrons.c. These reactions take place on the sun.d. No waste products are created.
Which of the following is true of nuclear fusion reactions?
a. It is the joining together of light nuclei.b. It is the breaking apart of heavy nuclei.c. Uranium-235 is used in fusion reactions.d. A critical mass of uranium can keep the reaction going.
Which of the following is true of nuclear fusion reactions?
a. It is the joining together of light nuclei.b. It is the breaking apart of heavy nuclei.c. Uranium-235 is used in fusion reactions.d. A critical mass of uranium can keep the reaction going.