For example, the cost of a CT scanner can be as low as $65,000 for a refurbished one that produces only small images quickly. A larger and brand new CT scanner can run as high as $2.5 million.Prices are slightly higher for MRI machines, running up to about $3 million for a new machine.Ultrasound machines are much cheaper at $10,000-$200,000, depending on brand and type. larger and brand new CT scanner can run as high as $2.5 million. Prices are slightly higher for MRI machines, running up to about $3 million for a new machine. Ultrasound machines are much cheaper at $10,000-$200,000, depending on brand and type.
1 This law helps define the notion of temperature. 2  First law of thermodynamics: When energy passes, as work, as heat, or with matter, into or out from a system, its internal energy changes in accord with the law of conservation of energy. 3  Equivalently, perpetual motion machines of the first kind are impossible.
The first law of thermodynamics is essentially that energy cannot be created or destroyed, but only transferred into or out of a system. The increase in the internal energy of a thermodynamic system is equal to the amount of heat energy added to the system, less any energy expended or transferred (as through work).