PHYS 1010 Exam Questions And
Answers
/. model - Answer-representation of something that is too difficult to display directly
/.theory - Answer-explanation for patterns in nature that is supported by scientific
evidence and verified multiple times
/.law - Answer-uses concise language to describe a generalized pattern in nature that is
supported by evidence and experiments
-expressed in the form of an equation
/.three fundamental SI units - Answer-length- meter
mass- kilogram
time- seconds
/.accuracy - Answer-the degree to which a measured value agrees with the correct
value for that measurement
/.precision - Answer-the degree to which repeated measurements agree with each other
/.factors that contribute to uncertainty - Answer-1. limitations of the measuring device
2. the skill of the person making the measurement
3. irregularities in the object being measured
/.percent uncertainty - Answer-the ratio of the uncertainty of a measurement to the
measured value, expressed as a percentage
/.random error - Answer-Error that is due to chance and is not standardized. Decreases
precision.
/.systemic error - Answer-caused by incorrect calibration of the measuring instrument
/.90% confidence interval - Answer-z = 1.645
/.kinematics - Answer-study of motion
/.reference frame - Answer-coordinate system, reference point (origin), and scale that
fixes and standardizes measurements for motion
/.position - Answer-location of an object at any particular time with respect to the origin
/.displacement - Answer-the change in position of an object
Answers
/. model - Answer-representation of something that is too difficult to display directly
/.theory - Answer-explanation for patterns in nature that is supported by scientific
evidence and verified multiple times
/.law - Answer-uses concise language to describe a generalized pattern in nature that is
supported by evidence and experiments
-expressed in the form of an equation
/.three fundamental SI units - Answer-length- meter
mass- kilogram
time- seconds
/.accuracy - Answer-the degree to which a measured value agrees with the correct
value for that measurement
/.precision - Answer-the degree to which repeated measurements agree with each other
/.factors that contribute to uncertainty - Answer-1. limitations of the measuring device
2. the skill of the person making the measurement
3. irregularities in the object being measured
/.percent uncertainty - Answer-the ratio of the uncertainty of a measurement to the
measured value, expressed as a percentage
/.random error - Answer-Error that is due to chance and is not standardized. Decreases
precision.
/.systemic error - Answer-caused by incorrect calibration of the measuring instrument
/.90% confidence interval - Answer-z = 1.645
/.kinematics - Answer-study of motion
/.reference frame - Answer-coordinate system, reference point (origin), and scale that
fixes and standardizes measurements for motion
/.position - Answer-location of an object at any particular time with respect to the origin
/.displacement - Answer-the change in position of an object
