subject
Physics, 08.10.2019 18:30 sethjohnson386pbnm3x

How does the speed of a runner vary over the course of a marathon (a distance of 42.195 km)? consider determining both the time to run the first 5 km and the time to run between the 35-km and 40-km points, and then subtracting the former time from the latter time. a positive value of this difference corresponds to a runner slowing down toward the end of the race. the accompanying histogram is based on times of runners who participated in several different japanese marathons.†

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 03:30
Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.
Answers: 1
question
Physics, 22.06.2019 23:00
A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?
Answers: 1
question
Physics, 23.06.2019 02:30
Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.
Answers: 2
question
Physics, 23.06.2019 06:00
The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz
Answers: 2
You know the right answer?
How does the speed of a runner vary over the course of a marathon (a distance of 42.195 km)? consid...
Questions
question
Mathematics, 26.11.2020 04:10
question
Mathematics, 26.11.2020 04:10
question
Physics, 26.11.2020 04:10
question
Mathematics, 26.11.2020 04:10
question
Advanced Placement (AP), 26.11.2020 04:20
question
Social Studies, 26.11.2020 04:20