Physics, 16.11.2019 00:31 nihadsalim10
In a collision between an electron and a hydrogen atom, it is useful to select both objects as the system because which of these:
1
the total momentum of the system does not change during the collision.
during the time interval just before to just after the collision, external forces are negligible.
the kinetic energy of a two-object system is nearly zero.
the sum of the final kinetic energies must equal the sum of the initial kinetic energies for a two-object system.
the forces the objects exert on each other are internal to the system and don't change the total momentum of the system
Answers: 2
Another question on Physics
Physics, 21.06.2019 21:00
A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.
Answers: 2
Physics, 22.06.2019 12:10
Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.
Answers: 3
Physics, 22.06.2019 12:10
Energy flows from the producer level to the level. is called
Answers: 1
Physics, 22.06.2019 13:00
At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.
Answers: 3
You know the right answer?
In a collision between an electron and a hydrogen atom, it is useful to select both objects as the s...
Questions
Mathematics, 21.11.2019 21:31
History, 21.11.2019 21:31
Physics, 21.11.2019 21:31
Chemistry, 21.11.2019 21:31
Computers and Technology, 21.11.2019 21:31
