Physics, 24.12.2019 21:31 ayoismeisalex

Why did j. j. thomson experiment with cathode ray tubes?

Answers: 2

Show answers

Answers

Thomson's First Cathode Ray Experiment. Thomson had an inkling that the 'rays' emitted from the electron gun were inseparable from the latent charge, and decided to try and prove this by using a magnetic field. His first experiment was to build a cathode ray tube with a metal cylinder on the end.

Answer from: nina4552

To find out the nature of cathode rays.

Explanation:

Cathode rays tubes were born from experiment to study the conductivity of electricity in gases. The arrange of the experiment was a tube of glass with some gas inside, metallic plates in the both ends of the tube, a source of voltage and an amperemeter, as it is shown in the figure attached.

A differential potential was applied between the two plates. The one connected to the negative pole has the name “cathode” and the one connected to positive pole has the name of “anode”. Measurement of the electricity that passed through the tube between the cathode and the anode was made with different samples of gasses, then it was made with the tube in vacuum, giving as surprising result a lecture of current marked in the amperemeter (even without a material medium to travel the electric current from the cathode to the anode).

Later, variations of the experiment made for the physicist William Crookes showed at that time a “radiation” coming from the cathode (which receive the name of cathode rays). He showed that under the presence of a magnetic field the cathode rays were deviated. That gave the hypothesis that the cathode rays were made of electrical negative particles.

The particles of negative charge (electrons) were confirmed from the experiments of J.J Thomson in 1897 by the use of an electric field. With cathode of different materials, Thomson made the conclusion of all materials have this negative charge particle in their composition.

Why did j.j. thomson experiment with cathode ray tubes?

Answer from: Quest

i need the answer to this too but idk it ; -;

Predict how the weather in chicago, il will change in the next 12 hours. a. it will experience clea

Answer from: Quest

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

brainliest if you have proof from k12 test and provide evidence wit image! provide image evi

Another question on Physics

Physics, 21.06.2019 20:00

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Answers: 1

Answer

Physics, 21.06.2019 22:00

There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?

Answers: 1

Answer

Physics, 23.06.2019 02:20

3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.

Answers: 2

Answer

Physics, 23.06.2019 07:30

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?