Physics Knowledge
Physics knowledge is a platform that shares up-to-date info on the latest developments in science, mainly in the field of Physics .
_Question 1_
What is the process by which an atomic nucleus splits into two or more smaller nuclei?
A) Fusion
B) Fission
C) Radioactive decay
D) Ionization
_Answer: B) Fission_
_Question 2_
Which of the following types of reactions releases energy by combining two or more atomic nuclei?
A) Fission reaction
B) Fusion reaction
C) Chemical reaction
D) Nuclear decay
_Answer: B) Fusion reaction_
_Question 3_
What is the most commonly used fissile material in nuclear power plants?
A) Uranium-235
B) Plutonium-239
C) Thorium-232
D) Deuterium
_Answer: A) Uranium-235_
_Question 4_
Which of the following is an example of a fusion reaction?
A) Splitting of uranium-235
B) Combining of deuterium and tritium
C) Decay of radioactive isotopes
D) Burning of fossil fuels
_Answer: B) Combining of deuterium and tritium_
_Question 5_
What is the energy source of the sun and other stars?
A) Fission reactions
B) Fusion reactions
C) Chemical reactions
D) Gravitational energy
_Answer: B) Fusion reactions_
14/03/2024
Today is March 14 (3.14) – Pi day.
The date today resembles 3.14159, the common approximation of the mathematical constant Pi, or π. This concurrence has given rise to an annual celebration from 1:59 pm - also the time of publication of this post (CET).
What is Pi?
Understanding Pi is essential if you want to make calculations for circles, cylinders, spheres, and anything circular, even an ellipse. Pi is the ratio of the circumference of a circle to its diameter. It doesn't matter how big or small the circle is - the ratio stays the same. Properties like this that stay the same when you change other attributes are called constants.
How are you celebrating Pi day?
02/02/2024
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The green glow of Comet E3 will be visible next to Mars Friday night Days after making its close approach to Earth, Comet E3 is now set to pass by another planet, and it will make for a stirring sight in the night sky -- if the weather cooperates.
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Researchers using an optical parametric oscillator light source succeeded in producing two entangled light beams. (Artist’s concept.)
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Area under force displacement curve gives
1) distance covered
2) work done
3) power
4) none
If a spring is compressed, the work done on it equals the increase in it's?
1) K.E 2) momentum
3) force 4) elastic P.E
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