Bushong-Chapter 02 - Basic Physics Primer Questions and Answers 100% Correct

Bushong-Chapter 02 - Basic Physics Primer Questions and Answers 100% Correct Which of the following is the SI unit for power? Joule/second (The SI unit of power is the joule/second (J/s), which is a watt (W).) Thermal radiation is the transfer of heat by the emission of ___________________. infrared radiation (Thermal radiation is the transfer of heat by the emission of infrared radiation.) Express 6849 in exponential form. 6.849 × 10^3 (6849 = 6.84 × 10^3) X-rays have a velocity of 300,000,000 m/s. Express this in exponential form. 3.0 × 10^8 m/s 300,000,000 m/s = 3 × 10^8 m/s Which units are considered base quantities? Mass, length, and time (The base quantities are length, mass, and time, and they are the building blocks of all other quantities.) Which of the following are special quantities used in radiologic science? Exposure, dose, effective dose (Exposure, dose, and effective dose are special quantities used in radiologic science.) Which of the following is Newton's first law of motion? A body at rest will remain at rest and a body in motion will continue in motion with constant velocity unless acted on by an external force. (Newton's first law of motion states that a body at rest will remain at rest and a body in motion will continue in motion with constant velocity unless acted on by an external force.) Which of the following is Newton's third law of motion? (For every action, there is an equal and opposite reaction.) Newton's third law of motion states, for every action, there is an equal and opposite reaction. Which of the following states the law of conservation of energy? Energy may be transformed from one form to another, but it cannot be created or destroyed. (The law of conservation of energy states that energy may be transformed from one form to another, but it cannot be created or destroyed.) The basic quantities measured in mechanics are _____, _____, and _____. mass, length, time An example of a derived quantity in mechanical physics is a volume Exposure is measured in units of grays The first step to expressing a number in scientific notation is to write the number in decimal form Graphs are typically based on two axes; a _________ and a ______ x-axis ; y-axis in radiologic science, all of the following are special quantities; except distant (exposure, dose, effective dose are special quantities)