Ch. 1 Essential Concepts of Radiologic Science Questions with Correct Answers

What is the Qauntity of matter as described by its energy equivalence? - Mass Anything that occupies space - Matter The ability to do work. - Energy E is energy, m is mass and c is the velcotiy (speed) of electromagnetic radiation (light) in a vacuum. - E=mc2 What is the removal of an electron from an atom? - Ionization To provide a x-ray beam that is satisfactory for imaging, you must supply the x-ray tube with a ? - High voltage electric current Radiology emerged as a medical specialty because of the - Snook transformer and Coolidge x-ray tube _____ is based on the vibration of atoms of cesium. - Seconds The velocity of light is constant and is symbolized by - c=3x10 to the 8th power m/s Inertia - A body will remain at rest or will continue to move with constant velocity in a straight line unless acted on by an external force. - Newton's first law of motion Force- the force that acts on an object is equal to the mass of the of the object multiplied by the acceleration produced - Newton's second law of motion Action and reation - for every action, there is a equal and opposite reaction. - Newton's third law of motion What is the product of mass and velocity? - Momentum What is the product of mass and the acceleration of gravity on earth : 1 lb. = 4.5 N - Weight What is the product of force and distance? - Work What is the quotient of work by time? - Power What is the abilty to do work? - Energy What is the kinetic energy of the random motion of molecules? - Heat What is the unit of radiation exposure or intensity? - Air kerma (Gya)