0
What else can I help you with?
How did the results of Rutherfords gold foil experiment differ from his expectations?
Everyone thought that the alpha particles would go through the gold- foil with little deflection. When the alpha particle passed straight through the gold atoms with no deflection or bounced straight back a small fraction bounced off at a large angle, or bounced straight back to the source. Rutherford came up with a new theory of the atom, that the atom is mostly empty space and in the center there is a nucleus. this is known as the nucleus atom.
When is the velocity vector of a particle tangent to the path of the particle?
The velocity vector of a particle is tangent to the path of the particle at any point. This is because velocity is a vector that points in the direction of motion of the particle at that particular instant.
How do the mass and size of an alpha particle compare with mass and size of beta particle?
The mass and size of an alpha particle compare with the masa and size of beta particle in the sense that the alpha particle is significantly larger in both size and mass that the beta and gamma particles. This is why it is called the alpha particle.
What subatomic particle has a charge of -1?
The electron is a subatomic particle that has a charge of -1.
How did Thomson know that the glow in the crt was from a stream of charged particles?
Firstly, the glow does not occur throughout the tube, but when the cathode rays hit a fluorescent screen. (There is a phenomenon where the tube glows, but that happens when there is more gas in the tube and is a different thing). Thomson did three experiments. In the first, he used a magnetic field to deflect the rays. This showed that the rays themselves were charged, implying they were particles. In his second he used an electric field to deflect the rays, and the direction of deflection showed they carried a negative charge. In the third, he varied the electric field and calculated the charge to mass ratio by the variation in deflection. This showed that the particles were very tiny, much tinier than anything known previously.
What caused the deflection of the alpha particles in Rutherfords gold foil experiment?
A zinc sulfide coated screen surrounding the gold foil produced a flash of light whenever it was struck by an alpha particle. By noting where the flash occurred, the scientists could determine if the atoms in the gold foil deflected the alpha particles.
What is magnetic deflection senstivity?
Magnetic deflection sensitivity of a cathode ray oscilloscope (CRO) is defined as the amount of deflection of electron spot produced when a magnetic flux density of 1 Wb/m2 is applied. SM = (e / m )1\2 x 1\ (2V0) 1\2 x l x L
What would happen to the deflection of the cathode ray if the particle in the rays were heavier?
deflect more
Would the angle of deflection of the charged particle be bigger or smaller if they had more mass?
It would be smaller. The force on the particles will be the same. However, their bigger mass (inertia) will mean that their sideways acceleration is less than for lighter particles. They travel in a larger arc
What describes Rutherfords model of an atom?
Rutherford imagined the atom to be a particle with a thickly concentrated positive nucleus and electrons moving around it.
Why did Rutherford say the deflection of an alpha particle was like?
Rutherford said the deflection of an alpha particle was like firing a bullet at tissue paper and having it bounce back. This analogy conveyed the unexpected result that particles were being deflected backwards, suggesting the presence of a concentrated positive charge in the atom's nucleus.
An electric field can deflect?
charged particles, causing them to change direction or accelerate. This deflection is a result of the interaction between the electric field and the charged particles' electric charge. The strength and direction of the deflection depend on the properties of the electric field and the charged particle.
Who discovered evidence of positively charged particle?
It's goldstein.
How did chadwick use the results of his experiment to come up with his theory?
Chadwick's experiment on the deflection of alpha particles by a thin sheet of beryllium led to the discovery of the neutron, as the neutral particle responsible for this deflection. Based on his results, Chadwick proposed that the atom had a neutral particle in its nucleus, now known as the neutron, which explained the missing mass in atoms. This led to the development of the neutron theory of the atomic nucleus.
If an particle hits a gold nucleus in a head on collision the particle will not be deflected very much?
Correct, due to the massive size of the gold nucleus compared to the size of the incoming particle, the particle will not experience a large deflection in a head-on collision. This is because of the concentrated positive charge in a small space in the gold nucleus that causes a very strong Coulomb repulsion when the incoming particle gets close to it.
What evidence is there of the particle theory?
The evidence for the particle theory of matter is supported by the behavior of particles in the kinetic molecular theory, such as the diffusion of gases, Brownian motion, and the interaction of particles in chemical reactions. Additionally, the observation of subatomic particles like protons, neutrons, and electrons further solidifies the particle nature of matter. Experimental data from particle accelerators also provide evidence for the existence of various elementary particles.
What are the evidence of the particle nature of matter?
Some evidence of the particle nature of matter includes the discrete energy levels observed in atomic spectra, the photoelectric effect where light behaves like particles (photons), and the Compton effect where X-rays scatter off electrons in a way consistent with particle interactions. These phenomena suggest that matter can exhibit particle-like behavior.
