Physics, 17.04.2020 22:53 lrasanaoaksandfurana
ASTRONOMY HELP :
5. (T or F) Flux is not related to the distance from the source.
4. (T or F) A G star is hotter than an M star.
3. (T or F) Parallax is a good method to find the distance to a star say 1300 LY away.
Answers: 1
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 04:00
Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?
Answers: 1
Physics, 22.06.2019 21:00
Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine
Answers: 2
ASTRONOMY HELP :
5. (T or F) Flux is not related to the distance from the source.
...
5. (T or F) Flux is not related to the distance from the source.
...
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