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2 years ago

Nuclear fission can be described as a chain reaction. a. True b. False

Physics

2 answers:

Semenov [28]2 years ago

8 0

Answer : The given statement is, True.

Explanation :

Nuclear fission : It is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

In fission process, protons and neutrons are produced and larger amount of energy is released.

Nuclear fission can be described as a chain reaction.

In nuclear reactor, neutron hits the uranium nucleus and the uranium nucleus splits into two nuclei and three neutrons. These three neutrons further hit the uranium nucleus and the uranium nucleus split into two nuclei and these 3 neutrons produces 9 neutrons.

So, yes the nuclear fission can be described as a chain reaction.

monitta2 years ago

6 0

Answer: The correct answer is True.

Explanation:

Nuclear fission reactions is a type of nuclear reactions. In these nuclear reactions, one heavier nuclei splits into two or more lighter nuclie's. This process produces a series of neutrons and protons and release a large amount of energy.

Nuclear chain reactions are a series of fission reactions which is initiated by the neutron that is produces in the previous fission reaction. The neutrons in turn produces neutrons and the process further continues.

So Yes, nuclear fission can be described as a chain reaction.

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stira [4]

Answer:

2.5 m/s²

Explanation:

Given,

Initial speed ( u ) = 10 m/s

Final speed ( v ) = 20 m/s

Time ( t ) = 4 seconds

To find : Acceleration ( a ) = ?

Formula : -

a = ( v - u ) / t

a = ( 20 - 10 ) / 4

= 10 / 4

= 5 / 2

a = 2.5 m/s²

Therefore,

The acceleration of the scooter is 2.5 m/s²

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2 years ago

A transformer is intended to decrease the value of the alternating current from 500 amperes to 25 amperes. The primary coil cont

EastWind [94]

Answer:

The number of turns in secondary coil is 4000

Explanation:

Given:

Current in primary coil $I_{P} = 500$ A

Current in secondary coil $I_{S} = 25$ A

Number of turns in primary coil $N_{P} = 200$

In case of transformer the relation between current and number of turns is given by,

$\frac{N_{S} }{N_{P} } = \frac{I_{P} }{I_{S} }$

For finding number of turns in secondary coil,

$N_{S} = \frac{I_{P} }{I_{S} } N_{P}$

$N_{S} = \frac{500}{25} \times 200$

$N_{S} = 4000$

Therefore, the number of turns in secondary coil is 4000

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2 years ago

A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one complete l

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Speed uses distance and velocity uses displacement in its calculation.

For 100 m race, distance = displacement. Hence speed = velocity

For 400m race, distance ≠ displacement. distance = 400m whereas displacement = 0m. Hence speed ≠ velocity

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2 years ago

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Answer:

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