PHYS 1010 - Exam 1 2025 with correct answers

PHYS 1010 - Exam 1 2025 with correct answers absolute zero - ANSWER-lowest temp. possible, corresponding to no random molecular movement .acceleration - ANSWER-rate of change of velocity .acceleration due to gravity - ANSWER-9.8 m/s^2 .accuracy - ANSWER-how close a measurement is to the true value .action force - ANSWER-the initial push or pull of one object on another object .air resistance - ANSWER-force that opposes the motion of objects that move through the air .angular momentum - ANSWER-tendency of a rotating object to continue spinning about same axis; faster a spin, more stability .archimedes principle - ANSWER-buoyant force on an object in a fluid = weight of fluid displaced by the object .average speed - ANSWER-total distance divided by total time .biofuel - ANSWER-Liquid fuel created from processed or refined biomass .boiling point - ANSWER-the temp at which even molecules of average speed can overcome the forces binding them together -occurs in the entire volume of liquid - occurs only at the boiling point or higher .boyle's law - ANSWER-volume of a gas is inversely proportional to its pressure when the temperature is held constant .buoyancy - ANSWER-the upward buoyant force on an object immersed in a fluid is equal to the weight of the fluid displaced by the object and is due to the increase in pressure with depth in the fluid .cap-and-trade system - ANSWER-market-based pollution control system in which the government sets an overall limit on how much of a pollutant is acceptable and issues vouchers to pollute to each company, which companies are then free to trade .carbon capture and storage (CCS) - ANSWER-involves pumping CO2 emitted by power plants or other sources into underground reservoirs .center of mass - ANSWER-the point in an object that moves as if all the object's mass were concentrated at that point .centripetal acceleration - ANSWER-acceleration toward the center of a curved or circular path .centripetal force - ANSWER-inward force on an object moving in a covered path .Charles' law - ANSWER-the volume of gas is proportional to its absolute temp. when the pressure is held constant .coal - ANSWER-A fossil fuel that forms underground from partially decomposed plant material .cogeneration - ANSWER-the generation of electricity and other jointly, especially the utilization of the steam left over from electricity to produce heat .conduction - ANSWER-The direct transfer of heat from one substance to another substance that it is touching. .conservation of momentum - ANSWER-in the absence of outside forces, the total momentum of a set objects remains the same no matter how the objects interact with one another .constellations - ANSWER-easily recognizable groups of stars (e.g. Big Dipper)