What is variety in principles of training? The principle of variety is ensuring training sessions use multiple training types and methods, as well as exercises within these methods. Variety is needed in training, not only to prevent boredom, but also to ensure complete and full development of fitness. What is variety principle? Variety is the […]
How do kidneys maintain pH balance?
How do kidneys maintain pH balance? The kidneys have two main ways to maintain acid-base balance – their cells reabsorb bicarbonate HCO3− from the urine back to the blood and they secrete hydrogen H+ ions into the urine. By adjusting the amounts reabsorbed and secreted, they balance the bloodstream’s pH. What organ is most critical […]
What boat hull can hold the most weight?
What are the disadvantages of cobalt 60?
What are the disadvantages of cobalt 60? Because it decays by gamma radiation, external exposure to large sources of Co-60 can cause skin burns, acute radiation sickness, or death. What radiation does cobalt 60 emits? gamma rays How can you protect yourself from cobalt 60? Cobalt-60 must be stored in a position well shielded by […]
How do you find the greatest displacement?
How do you find the greatest displacement? Displacement can be calculated by measuring the final distance away from a point, and then subtracting the initial distance. Displacement is key when determining velocity (which is also a vector). Velocity = displacement/time whereas speed is distance/time. What is the maximum displacement between two points? Answer: The maximum […]
Is sublimation release or absorbed?
Is sublimation release or absorbed? Similarly, the amount of energy absorbed when a substance melts, and released when the same amount of substance freezes, is the same. Sublimation, a substance going straight from solid to gas phase, also involves the absorbing of energy. During which phase change will the greatest amount of energy released by […]
What is the purpose of a grid in radiology?
What is the purpose of a grid in radiology? As radiographers, we know that the whole purpose of using grids in radiography is to reduce scatter radiation, thereby increasing radiographic contrast. Thus, using grids with higher ratios and higher frequencies cleans up more scatter radiation, which increases contrast more than low-ratio and low-frequency grids. What […]
What cells do neurons communicate with?
What cells do neurons communicate with? Key facts: action potential and synapses Neurons communicate with each other via electrical events called ‘action potentials’ and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter. What is difference between neuron and nerve? Neuron is also known […]