Physics 2 wk 1 exam prep

What is the removal of an electron from an atom called?

• Ionization

• Pair production

• Irradiation

• Electricity

What does ALARA mean?

• All Level Alert Radiation Accident

• As Low As Reasonably Achievable

• Always Leave A Restricted Area

• As Low As Regulations Allow

Mass is the quantity of matter as described by its energy equivalence.

• True

• False

Radiation is the removal of an electron from an atom.

• True

• False

Radiology emerged as a medical specialty because of the Snook transformer and the Crookes x-ray tube.

• True

• False

The basic quantities measured in mechanics are __, __, and __.

• volume; length; meters

• mass; length; time

• radioactivity; dose; exposure

• meters; kilos; seconds

An example of a derived quantity in mechanical physics is a ___

• meter

• second

• dose

• volume

What is the decimal equivalent of the proper fraction 4/1000?

• 0004

• 004

• 04

• 4

What is the decimal equivalent of the improper fraction 289/74?

• 390

• 3.90

• 39.0

• 390.0

The first step to expressing a number in scientific notation is to ________.

• round up to the nearest 1000

• round down to the nearest 1000

• write the number in decimal form

• write the number as a fraction