Physics, 16.12.2019 04:31 allytrujillo20oy0dib
Which vehicle has the least kinetic energy? 18-wheeler, minivan, car, or bike?
Answers: 2
Physics, 21.06.2019 22:50
A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!
Answers: 1
Physics, 22.06.2019 03:50
The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?
Answers: 1
Physics, 22.06.2019 05:30
Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?
Answers: 2
Physics, 22.06.2019 16:00
The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?
Answers: 2
Which vehicle has the least kinetic energy? 18-wheeler, minivan, car, or bike?...
Mathematics, 21.10.2020 03:01
Mathematics, 21.10.2020 03:01
Biology, 21.10.2020 03:01
Mathematics, 21.10.2020 03:01
Social Studies, 21.10.2020 03:01
Mathematics, 21.10.2020 03:01
Chemistry, 21.10.2020 03:01
Geography, 21.10.2020 03:01
Mathematics, 21.10.2020 03:01
Social Studies, 21.10.2020 03:01
Social Studies, 21.10.2020 03:01
Mathematics, 21.10.2020 03:01
Chemistry, 21.10.2020 03:01
History, 21.10.2020 03:01