subject
Physics, 22.01.2022 14:00 SKSKSKSKGKUFHjk

1. A small bullet is fired into a large piece of wood. After the bullet penetrates the wood, the assembly moves as one unit along a low-friction track in the direction of travel of the bullet. After the bullet is stuck in the piece of wood, is the momentum of the wood (not including the bullet; assuming the piece of wood was initially at rest) greater than, equal to, or less than the initial momentum of the bullet? a. The momentum of the wood is greater than the initial momentum of the bullet
b. The momentum of the wood is greater than the initial momentum of the bullet.
c. The momentum of the wood is less than the initial momentum of the bullet

2. Is the combined kinetic energy of the bullet and the wood after the bullet is stuck in the wood greater than, equal to, or less than the initial kinetic energy of the bullet?

a. The combined energy is less than the initial kinetic energy of the bullet.
b. The combined energy is equal to the initial kinetic energy of the bullet.
c. The combined energy is greater than the initial kinetic energy of the bullet.

ansver
Answers: 2

Another question on Physics

question
Physics, 20.06.2019 18:04
When objects are charged by they do not need to touch each other. a. friction b. induction c. conduction d. all of these
Answers: 1
question
Physics, 22.06.2019 00:20
Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele
Answers: 1
question
Physics, 22.06.2019 20:00
Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?
Answers: 3
question
Physics, 23.06.2019 02:40
When doing scientific research ,the sources used should be ?
Answers: 1
You know the right answer?
1. A small bullet is fired into a large piece of wood. After the bullet penetrates the wood, the ass...
Questions
question
Mathematics, 21.10.2020 03:01
question
Mathematics, 21.10.2020 03:01
question
Mathematics, 21.10.2020 03:01
question
Mathematics, 21.10.2020 03:01
question
Mathematics, 21.10.2020 03:01
question
Mathematics, 21.10.2020 03:01