Physics, 09.08.2019 21:10 smonahan2023
Aspring is compressed between two cars on a frictionless airtrack. car a has four times the mass of car b, ma = 4 mb, while the spring’s mass is negligible. both cars are initially at rest. when the spring is released, it pushes them away from each other. which of the following statements correctly describes the velocities, the momenta, and the kinetic energies of the two cars after the spring is released? note: velocities and momenta are given below as vectors.
Answers: 2
Physics, 22.06.2019 10:00
**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
Answers: 1
Physics, 22.06.2019 12:20
Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)
Answers: 1
Physics, 22.06.2019 19:30
A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?
Answers: 1
Aspring is compressed between two cars on a frictionless airtrack. car a has four times the mass of...
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