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inna [77]
2 years ago
3

In his experiments on "cathode rays" during which he discovered the electron, J. J. Thomson showed that the same beam deflection

s resulted with tubes having cathodes made of different materials and containing various gases before evacuation.(c) Do calculations to show that the charge-to-mass ratio Thomson obtained was huge compared with that of any macroscopic object or of any ionized atom or molecule. How can one make sense of this comparison?
Physics
1 answer:
Yuliya22 [10]2 years ago
5 0

The charge-to-mass ratio in the second case is 4 times less because of e/M = 0.96x10⁸ N.

<h3>What is a cathode ray?</h3>

The electron beam that travels from the negatively charged cathode to the positively charged anode at the opposite end of the vacuum tube is known as a cathode ray.

As the electron, J. J. Thomson showed that the same beam deflections resulted in tubes having cathodes made of different materials and containing various gases before evacuation.

The elect's load = 1.6x10⁻¹⁹ C

The mass = 9.1x10⁻³¹ kg

e/m = 1.6x10⁻¹⁹/ 9.1x10⁻³¹ = 0.1 758 10 10¹² N

The homogenize has an electron of charge of 1.6x10⁻¹⁹ C

The mass M = 1.673x10⁻²⁷ ka

e/M = 1.6x10⁻¹⁹/1.67x10⁻²⁷ = 0.96x10⁸ N

In the second case, it is 4 times less

Thus, the charge-to-mass ratio in the second case is 4 times less because of e/M = 0.96x10⁸ N.

Learn more about the cathode ray here:

brainly.com/question/13665271

#SPJ4

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Dimension of specific heat capacity​
Luden [163]

Answer:

The specific heat of a substance (per unit of mass) has dimension L. T. Θ−1, or (L/T)2/Θ. Therefore, the SI unit J/K/kg is equivalent to metre squared per second squared per kelvin (m2 K−1 s−2).

3 0
3 years ago
Water floats on a liquid called "carbon tetrachloride." The two liquids do not mix. A light ray passing from water into carbon t
Oduvanchick [21]

Answer:

1.26

Explanation:

index  \: of  \: refraction \:  =  \:  \ \frac{ \sin(angle \: of \: incidence) }{ \sin(angle \: of \: refraction) }

\frac{ \sin(45.0) }{ \sin(40.1) }

= 1.26

5 0
4 years ago
In a collision between an electron and a hydrogen atom, it is useful to select both objects as the system because which of these
lukranit [14]

Answer:

Explanation:

Because of the following ,it is useful to select both objects as the system during  collision between an electron and a hydrogen atom

1. The total momentum of the system does not change during the collision.

2.The forces the objects exert on each other are internal to the system and don't change the total momentum of the system.

3. During the time interval just before to just after the collision, external forces are negligible.

6 0
4 years ago
The henry's law constant for n2 is 6. 2×10−4matm at 25∘c. what pressure of nitrogen is needed to maintain a n2 concentration of
hodyreva [135]

The pressure of nitrogen which is needed to maintain a N2 concentration of 0. 53 m is 3.2 × 10^(4).

<h3>What is pressure? </h3>

It is defined as the continuous physical force applied on or against an object by something which is in contact with it.

It is also defined as the force per unit area.

<h3>What is henry's law? </h3>

The henry law constant is thr ratio of the partial pressure of compound in air to the concentration of compound in water at given temperature.

C= kp

where,

C is the concentration of compound = 0.53m

k is the henry constant = 6. 2×10−4matm

p is the pressure of compound

By substituting all the value we get,

C = 6. 2×10−4 × p

0.53 = 6. 2×10−4 × p

p = 0.53/6. 2×10−4

p = 3.2 × 10^(4)

Thus we find that the pressure needed to maintain a N2 concentration of 0. 53 m is 3.2 × 10^(4).

learn more about Henry's law:

brainly.com/question/16222358

#SPJ4

8 0
2 years ago
A 615 N student standing on a scale in an elevator notices that the scale reads 645 N. From this information, the student knows
BARSIC [14]

Answer:

The elevator must be moving upward.

Explanation:

During the motion of an elevator, the weight of the person deviates from his or her actual weight. This temporary weight during the motion is referred to as "Apparent Weight". So, when the elevator is moving downward, the apparent weight of the person becomes less than his or her actual weight.

On the other hand, for the upward motion of the elevator, the apparent weight of the person becomes more than the actual weight of that person.

Since the apparent weight (645 N) of the student, in this case, is greater than the actual weight (615 N) of the student.

<u>Therefore, the elevator must be moving upward.</u>

8 0
3 years ago
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