Physics, 20.08.2019 22:20 sparkyjones02
Practice problems below are three practice problems that will you in completing the activities at the introduc- tory lab. you are more than welcome to try them or even complete them before attending the lab session. there is no preparatory assignment for this laboratory. for the questions that require calculations, remember to express your final answers in the "best estimate – uncertainty" form and include full working and units. 1. find the sum of the following lengths: 102.3 + 0.2 cm, 44.8 +0.2 cm and 5.67 + 0.08 cm, assuming that the measurements are independent. (for general overview, see "sums and differences" in section 1.2; for further details, see appendix section a.4.1.) 3. several readings of the diameter of a sphere vield the following values: 24.75 mm, 24.82 mm, 24.87 mm, 24.79 mm, 24.75mm 24.95 mm, 24.71 mm, 24.81 mm, 24.65 mm, 24.69 mm. calculate the mean radius, the standard deviation of the radius measurements, the uncertainty in the mean radius and report the measured radius with the correct signif- icant figures. (for general overview, see - statistical analysis in large data sets" in section 2; for further details, see appendix sections a.3.1, a.3.3 and a.4. note: you do not need to show working for the standard deviation
Answers: 2
Physics, 22.06.2019 04:30
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
Answers: 1
Physics, 22.06.2019 12:30
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
Physics, 22.06.2019 18:30
Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm
Answers: 2
Practice problems below are three practice problems that will you in completing the activities at t...
Mathematics, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
Chemistry, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
English, 17.02.2021 07:00
Computers and Technology, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
Chemistry, 17.02.2021 07:00
Chemistry, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
Advanced Placement (AP), 17.02.2021 07:00
Mathematics, 17.02.2021 07:00
Mathematics, 17.02.2021 07:00