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RSB [31]
3 years ago
10

What is meant by cathode rays?what is radio activity and state three of it's effects?​

Physics
1 answer:
stealth61 [152]3 years ago
5 0

1cathode rays plural : the high-speed electrons emitted in a stream from the heated cathode of a vacuum tube

2: a stream of electrons emitted from the cathode of a vacuum tube —usually used in plural

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Determine the moment of inertia of a 14.8 kg sphere of radius 0.752 m when the axis of rotation is through its center.
vfiekz [6]

Answer:

I=3.348Kgm^2

Explanation:

From the question we are told that:

Mass m=14.8kg

Radiusr=0.752m

Generally the equation for inertia is mathematically given by

I=\frac{2}{5}mR^2

I=\frac{2}{5}14.8*(0.752)^2

I=3.348Kgm^2

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2 years ago
A 160-m long ski lift carries skiers from a station at the foot of a slope to a second station 40 m above. What is the IMA of th
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Answer:

ima is l/h so 160/40 = 4

Explanation:

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3 years ago
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One mole of a substance contains 6.02 × 1023 protons and an equal number of electrons. If the protons could somehow be separated
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Explanation:

it is almost zero .this is because the distance and the electrostatic force are inversely proportional

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2 years ago
How many electrons are in the outer energy level of an atom of carbon
xz_007 [3.2K]

Answer:

4 electrons

Explanation:

Carbon, is the group 14 element, with four electrons in its outer shell. Carbon always shares electrons to reach a complete valence shell, making bonds with other atoms.

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3 years ago
Use the graph below to answer the following question: What is happening to the object's velocity?
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The object's velocity is decreasing.

Explanation:

From graph is the attached image, we can clearly point that the velocity of this motion is decreasing with time.

Velocity is a vector quantity.

  • The y-axis represent displacement.
  • The x-axis depicts time
  • Using the graph, we know that the slope of the line on the graph gives us the velocity as it denotes the change of displacement with time.
  • When we find the slope, it will give us a negative value which shows that the body is slowing down and not increasing speed.

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