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In the symbol A1840r, the “40” represents the:

You are an operator on facility with stored radioactive materials, and that portion of the facility has experienced a fire.  Since you know the region of the facility where the fire took place, you are being asked to help lead a team to identify, characterize and eventually secure any possible radioactive sources that might have been exposed in the incident.Choose the most appropriate piece of equipment for each task the team is likely to have to perform.  Some answers may be used more than once, some may not be used.

For each of the following statements, evaluate whether the expressed inequality is true or false.  Choose those which are correct.

Fill in each blank with the most appropriate term.  Some answers may be used more than once, some may not be used.Liquid and solid shielding block (1) ______ particles with ease, while (2) ______ particles penetrate further and require plastic or thin metal barriers. The most penetrating emissions, (3) ______ rays, demand dense shielding like lead. Radiation intensity is measured in (4) ______ (decays per second), and absorbed dose in (5) ______ (joules per kilogram). Nuclear energy arises from the (6) ______—the difference in mass between a nucleus and its separate nucleons—converted to (7) ______ via E=Δmc2. In reactors, (8) ______ splits heavy nuclei (e.g., U-235) in a chain reaction moderated by (9) ______. Experimental fusion devices, such as the (10) ______, aim to heat and confine plasma until light nuclei combine, releasing energy.

Which instrument directly counts ionizing events by amplifying the discharge in a gas tube?

Gamma decay differs from alpha and beta decay because:

To monitor long-term human exposure, dosimeters report dose in:

Which process releases the most energy per nucleon?

When balancing a nuclear equation that emits a neutron (n01), which numbers must remain equal on both sides?

Directions: Listen to the lecture and take notes. Then choose the response which best answers the question below based on the information you heard in the lecture. ELAS 980 Diagnostic – Aging(1).mp3 Which of the following best expresses the main idea of the lecture?