A physics student is driving home after class. The car is traveling at 14.7 m/s when it approaches an intersection. The student estimates that he is 20.0 m from the entrance to the intersection when the traffic light changes from green to yellow and the intersection is 10.0 m wide. The light will change from yellow to red in 3.00 s. The maximum safe deceleration of the car is 4.00 m/s2 while the maximum acceleration of the car is 2.00 m/s2. Should the physics student decelerate and stop or accelerate and travel through the intersection?
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 09:00
What is a possible result of higher air temperature caused by global warming
Answers: 1
Physics, 22.06.2019 16:30
The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db
Answers: 3
Physics, 22.06.2019 16:30
When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)
Answers: 1
A physics student is driving home after class. The car is traveling at 14.7 m/s when it approaches a...
History, 18.12.2020 01:00
History, 18.12.2020 01:00
History, 18.12.2020 01:00
English, 18.12.2020 01:00
Arts, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00
Arts, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00
Mathematics, 18.12.2020 01:00