Physics, 25.10.2019 21:43 lilybear1700
Adisk of radius 25.0 cm is free to turn about an axle perpendicular to it through its center. it has very thin but strong string wrapped around its rim, and the string is attached to a ball that is pulled tangentially away from the rim of the disk. the pull increases in magnitude and produces an acceleration of the ball that obeys the equation where t is in seconds and a is a constant. the cylinder starts from rest, and at the end of the third second, the ball’s acceleration is 1.50 m/s^2.
(a) find a.
(b) express the angular acceleration of the disk as a function of time.
(c) how much time after the disk has begun to turn does it reach an angular speed of 14.5 rad/s ?
(d) through what angle has the disk turned just as it reaches 14.5 rad/s ?
Answers: 2
Physics, 22.06.2019 14:10
In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.
Answers: 2
Physics, 23.06.2019 01:30
Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class
Answers: 3
Physics, 23.06.2019 01:30
Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral
Answers: 3
Physics, 23.06.2019 02:30
If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s
Answers: 1
Adisk of radius 25.0 cm is free to turn about an axle perpendicular to it through its center. it has...
English, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Spanish, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
History, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Chemistry, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Chemistry, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00
Mathematics, 04.12.2020 08:00