You are helping to design a new fire escape for your third-floor apartment. You step out the window onto a crossbar
that is attached to a rope, which in turn is wound around a massive solid cylindrical flywheel that can turn on its axis.
As you fall at increasing speed, the rope causes the flywheel to turn at increasing angular velocity. Your task is to
choose a flywheel that will enable you to move at a safe 2.0 m/s when you reach 10 m below your starting position.
Your mass is 80 kg. Determine the rotational inertia and mass of the uniform 0.80 m radius flywheel you need to
buy.
Answers: 1
Physics, 22.06.2019 00:20
Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.
Answers: 1
Physics, 22.06.2019 11:30
Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.
Answers: 1
Physics, 22.06.2019 20:00
Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?
Answers: 3
Physics, 23.06.2019 00:30
What is the speed vfinal of the electron when it is 10.0 cm from charge 1?
Answers: 1
You are helping to design a new fire escape for your third-floor apartment. You step out the window...
Mathematics, 05.03.2021 18:20
Mathematics, 05.03.2021 18:20
Mathematics, 05.03.2021 18:20
Arts, 05.03.2021 18:20
Mathematics, 05.03.2021 18:20
Advanced Placement (AP), 05.03.2021 18:20
Mathematics, 05.03.2021 18:20
Mathematics, 05.03.2021 18:20
Mathematics, 05.03.2021 18:20
Mathematics, 05.03.2021 18:20