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RC_23
  • Member for 2 years, 8 months
  • Last seen this week
42 votes

Why does a fluid push upward on a body fully or partially submerged in it?

34 votes
Accepted

Why is Spacetime described as flat even though we live in 3 dimensions of space?

28 votes
Accepted

Wouldn't the cosmic background radiation (CMB) produce drag and thus create a preferential inertial frame?

24 votes

How can negative potential energy cause mass decrease?

21 votes

What does the sky look like from the moon?

14 votes

Is Brownian motion truly random?

14 votes

What exactly makes a black hole STAY a black hole?

12 votes

Einstein Field Equations Derivation

12 votes

Why don't the first two laws of thermodynamics contradict each other?

12 votes

How can micro black holes exist?

11 votes

How can time be curved?

10 votes

Why are only infrared rays classified as "heat rays"?

10 votes
Accepted

During fusion, how does mass turn into energy?

10 votes

How different is a 99.5% eclipse from a total eclipse?

9 votes

Why is relativity of simultaneity so special?

9 votes

Mass per nucleon graph

8 votes

Does the mass variable $M$ in the Schwarzschild radius equation $R = 2GM/c^2$ refer to rest mass or relativistic mass?

8 votes

Have rocket float into upper atmosphere via balloon

8 votes

Speed of Light and Time

7 votes

Spectroscopy: Yellow vs Magenta

7 votes

Does the Earth experience air resistance?

6 votes

Why whole of Kinetic Energy is not lost in collision?

6 votes
Accepted

If EM Waves Travel In Straight Lines, In What Representation Do They Resemble a Sinusoidal Wave?

6 votes
Accepted

Understanding the use of $d$ and $\partial$ in thermodynamics

6 votes

Energy gets paired with time and Momentum with space in both QM and SR.Any connections there?

6 votes

Why is the mole an SI unit?

6 votes
Accepted

Textbook derivation of relativistic energy

5 votes
Accepted

Why is red the brightest in the emission spectra of Hydrogen Gas?

5 votes

Is sand in a vacuum a good thermal insulator?

5 votes

How can the universe be hot or dense in the first moments after the big bang when it has no matter?

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