In terms of radiation dose, what is the major difference between medical diagnostic uses

Physics 101 Notes: 8/23  Skates o Riding a skateboard allows you to move freely, with ease and simplicity, without the constraints of friction o The skates support you vertically, because the ground supports the skates and the skates support you. But unlike shoes, the skates move freely back and forth o Skating is an example of the principle, Inertia: an object at rest tends to remain at rest, and object in motion tends to stay in motion.  Why does a stationary skater remain stationary o An object at rest tends to stay at rest (inertia) o Question: “A rotary lawnmower spins its sharp blade rapidly over the lawn and cuts the tops off the grass. Would the blade still cut the grasses if they weren’t attached to the ground  Yes, because even though it is not attached to the ground, it will stay in place because of inertia, allowing the blade to cut the grass.  Why does a moving skater tend to keep moving o An object in motion tends to remain in motion (inertia) o Inertial objects: inertial objects move in a straight line with a steady pace. o Objects at rest are still at a steady pace of motion (steady pace is 0)  Newton’s First law of Motion o “An object that is free of external influences moves in a straight line and covers equal distances in equal times.” o Question: Which