PHYS261 LAB FINAL EXAM QUESTIONS AND
CORRECT ANSWERS |ALREADY GRADED A+|| BRAND
NEW VERSION!!! 2026
Expt. 1 Purpose - CORRECT ANSWER -To teach us a few basic things about EXCEL to plot
and analyze data
Expt. 2 Purpose - CORRECT ANSWER -To learn how to estimate uncertainty in measurements,
how to do error propagation, and why it's important to understand uncertainty in measurements
Expt. 3 Purpose - CORRECT ANSWER -To study the position, velocity, and acceleration of a
body acted on by a constant force
Expt. 5 Purpose - CORRECT ANSWER -To measure an object undergoing centripetal
acceleration
Expt. 6 Purpose - CORRECT ANSWER -To determine the dependence of a pendulum's period
for oscillation in the pendulum's length and mass. Also, to use measurements you found to
calculate g, acceleration due to gravity
Expt. 9 Purpose - CORRECT ANSWER -To determine the relationship between pressure,
volume, and temperature of air in a closed container. We used Charle's Law (const vol.) and
Boyles law (const temp) to test the Ideal Gas Law. Lastly, we did an experiment to find absolute
zero
You measure one side of a block five times. Some measurements are the same and some are
different. How do you find the best estimate of the side length? - CORRECT ANSWER -You
take the average or the mean of all measurements taken (regardless of if they're the same or not)
CORRECT ANSWERS |ALREADY GRADED A+|| BRAND
NEW VERSION!!! 2026
Expt. 1 Purpose - CORRECT ANSWER -To teach us a few basic things about EXCEL to plot
and analyze data
Expt. 2 Purpose - CORRECT ANSWER -To learn how to estimate uncertainty in measurements,
how to do error propagation, and why it's important to understand uncertainty in measurements
Expt. 3 Purpose - CORRECT ANSWER -To study the position, velocity, and acceleration of a
body acted on by a constant force
Expt. 5 Purpose - CORRECT ANSWER -To measure an object undergoing centripetal
acceleration
Expt. 6 Purpose - CORRECT ANSWER -To determine the dependence of a pendulum's period
for oscillation in the pendulum's length and mass. Also, to use measurements you found to
calculate g, acceleration due to gravity
Expt. 9 Purpose - CORRECT ANSWER -To determine the relationship between pressure,
volume, and temperature of air in a closed container. We used Charle's Law (const vol.) and
Boyles law (const temp) to test the Ideal Gas Law. Lastly, we did an experiment to find absolute
zero
You measure one side of a block five times. Some measurements are the same and some are
different. How do you find the best estimate of the side length? - CORRECT ANSWER -You
take the average or the mean of all measurements taken (regardless of if they're the same or not)
