(89) X 0 馄.all 89% 12:40 PM Homework 1 PHYs 2100-09-LAB, SPRING 2019 NAME CIN Question 1. A bird flies a distance of d- 150+3 m during a time 20.0+1.0 s The average speed of the bird is u-d/t = 7.5 m/s. what is the uncertainty of u? Question 2. Suppose that we're able to eliminate the uncertainty in our time mea- surement so that t = 20.0 ±0.0 s. What is the new uncertainty of u?

Page 3 of 8 4. Lin went ice-skating and tracked his distance using a motion detector. Calculate the rate of change by analyzing the differences in the y-values and the differences in the x-values in the table. Calculate the rate of change again using the graph of Lin's skate. Explain why your answers make sense. Skater's Distance from Motion D

Post-Lab Homework Problems. 1. A student is using a track photogate to determine the time it takes her to run 50 meters. She records the following times: Trial Time (seconds) 1 5.420 5.464 3 5.728 4 5.496 5 5.644 6. 5.794 7 5.540 The data she collects has a mean of 5.583714 seconds, with an absolute uncertainty computed to be 0.141074 seconds. Report her 50-meter time as a confidence interval (a) using the mean and the absolute uncertainty given above. Another student measures his 200-meter run time (b) to be 20.7 + 0.3 seconds. Report the relative uncertainty of each student and identify which has the more precise run time.

Can you please explain how to solve the uncertainty for this problem. I previously asked the same question but the answer for the uncertainty i was given is wrong +/- 0.00559

Plz only solve part d and h... plz solve it correctly

In one of the labs, a student found the length and width of a rectangular wooden board. The recorded values are as the following: length = 35.7 cm , width = 28.6 cm

I need help with number 3

1. Suppose we had calculated the circumference C of the circle from our diameter d, using the formula C = Td. What would be the (absolute) uncertainty ac in the circumference, in terms of any of the following quantities: od,d, and C?

Given the equation A =%- where b =17.4+0.1s and e=12.7±0.5s What is the absolute uncertainty in A? Select one: O a. 11.2+0.3s O b. 11.2±0.2 O c. 11.2+0.6 O d. 11.2±0.5s

3) The radial acceleration, a, of a body rotating in a circle of radius r at constant speed v is given by v2 a = If v = (3.00±0.05) m/s and r= (1.5±0.1) m, a) calculate a, b) the maximum values of a, c) minimum values of a, d) the uncertainty in a.