PHYS 261 Pre Lab Questions and Answers | Latest Update 2026 | Guaranteed Pass

PHYS 261 Pre Lab Questions and Answers | Latest Update 2026 | Guaranteed Pass A cell in an Excel spreadsheet contains $A$5. What does it mean? - answer-Cell A5 is a fixed cell. Given an x-coordinate and a y-coordinate for a point, which type of chart in Excel will actually plot the point at its Cartesian coordinates? (pick one) - answer-Scatter chart. In Excel, what is the Solver used for? (pick one) - answer-Minimizing or maximizing a cell by varying other cells. To run a macro in Excel, you need to first click on...? (pick one) - answer-the view tab and then click on the macro button. Lab 1 - answer-Teach you basic few things about using Excel to plot and analyze data in 261 labs Only use scatter chart for plotting Solver- minimize or maximize the contents of a target cell by adjusting some other cells that the target cell depends on You measure the length of the same side of a block find times and find b= 11.0, 11.1, 11.2, 11.2, and 11.3. What is the best estimate for b? - answer-11.16 (take the average) You measure the length b of the same side of a block five times and each measurement has an uncertainty of Delta b=Δb=0.6 mm. What is the uncertainty in the best estimate for b in mm? - answer- 0.27A block is measured to have a mass M=M=27 g and volume V=V= 5.07 cm3 with an uncertainty of Delta M=ΔM=0.01 g in the mass and Delta V=ΔV=0.04 cm3 in the volume. What is the uncertainty in the density in g/cm3? - answer-error propagation A block is measured to have a density rho=ρ=2.685 g/cm3 with an uncertainty of Deltarho=Δρ=0.021 g/cm3. Findchiχ2 when the measured density is compared to the accepted density of aluminum rho=ρ=2.70 g/cm3. See Appendix A for how to calculate chiχ2 . - answer-chi squared= (xixtheory)/error in xi You measure the lengths of three sides of a block and find a = 5.8 mm, b = 14.6 mm, and c = 15.9 mm with an uncertainty of 0.04 mm in each measurement. What is the uncertainty Dv in the volume of the block in mm3 ? - answer-Use uncertainty Lab 2 - answer-Purpose; Show you how to measure uncertainty in measurements, how to do error propagation, and why it is important to understand the uncertainty in measurements you make If you find the five measurements are identical, you are limited by the resolution of the display (uncertainty 1/3 smallest increment that can be displayed) In this lab, the position of a cart will be measured using a sonic ranger. The ranger measures the position by: - answer-emitting an ultrasonic pulse A cart of mass m = 0.21 kg rides on an air track that is tilted at an angle of 8.2 degrees from the horizontal. What is the magnitude of the total force F (in N) on the cart? (You can use g = 9.8 m/s2) - answer-0.2935 A cart of mass m = 0.57 kg rides on an air track that is tilted at an angle of 3.7 degrees from the horizontal. What is the magnitude of the cart's acceleration (in m/s2) ? (You can use g = 9.8 m/s2) - answer-0.6324 A sonic ranger measures positions x = 0.03 m, 0.207 m, 0.318 m, 0.35 m at times t = 0 s, 0.1 s, 0.2 s, and 0.3 s, respectively. Find the average velocity