Answers: 1
Physics, 22.06.2019 12:30
As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?
Answers: 1
Physics, 22.06.2019 21:50
Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).
Answers: 2
Physics, 22.06.2019 22:30
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
Answers: 2
The potential difference in a simple circuit is 9 v and the resistance is 49 ï . what current flows...
Mathematics, 16.04.2021 14:00
Biology, 16.04.2021 14:00
Computers and Technology, 16.04.2021 14:00
Mathematics, 16.04.2021 14:00
History, 16.04.2021 14:00
Mathematics, 16.04.2021 14:00
Mathematics, 16.04.2021 14:00
Mathematics, 16.04.2021 14:00
Spanish, 16.04.2021 14:00
English, 16.04.2021 14:00
Biology, 16.04.2021 14:00
World Languages, 16.04.2021 14:00