Recent questions in Physics

+278 votes

0 answers

Are there mathematicians who don't know any physics?

asked Jul 20, 2022 in Physics by James South

+9 votes

0 answers

What is the smallest sound wave that can be detected by the human ear?

asked Jul 20, 2022 in Physics by bneves

+5 votes

0 answers

Can "moving directionally towards "up, down, left, and right"" exist without there being at least one existence that has ""a shape" and/or magnetism"?

asked Jul 20, 2022 in Physics by H Bell

+203 votes

0 answers

What is the difference between time reversal and a mirror world in physics?

asked Jul 20, 2022 in Physics by EmberSeeker

+26 votes

0 answers

What is the reason for using sine waves when analyzing sound? Would another shape (square) work just as well?

asked Jul 20, 2022 in Physics by CrystalScribe

+10 votes

0 answers

Is there a theoretical basis for why time moves only in one direction?

asked Jul 20, 2022 in Physics by Mr D

+75 votes

0 answers

Since all motion is relative, why is it wrong to say that the Sun revolves around the Earth?

asked Jul 19, 2022 in Physics by Construction Project

+99 votes

0 answers

How does general relativity support the idea of a time machine? Is it really possible to travel in time, going back to the past or see the future?

asked Jul 19, 2022 in Physics by Ben W

+14 votes

0 answers

Can an object be a black hole to one observer but not another?

asked Jul 19, 2022 in Physics by AstralWhirl

+17 votes

0 answers

What are the real modern applications of the 3-form Chern-Simons in today's world?

asked Jul 19, 2022 in Physics by Mof

+5 votes

0 answers

How do star and planet compare in terms of forces? A star has two balancing forces: 1. gravity inward and 2. pressure outward. How do these two forces operate in a planet? Planets have gravity but do planets have pressure? How is gravity balanced?

asked Jul 19, 2022 in Physics by blueassedfly!

+23 votes

0 answers

Why does normal matter interact with light, and dark matter doesn't?

asked Jul 19, 2022 in Physics by Bobby Dazzler

+131 votes

0 answers

How can you find out if an object is on the surface of a sphere without actually touching it?

asked Jul 19, 2022 in Physics by Prentle

+8 votes

0 answers

What are the conditions necessary for the existence of oceans or seas? Could they exist on exoplanets? If so, what would happen if liquid water came into contact with cosmic rays, UV rays, heat, etc.?

asked Jul 19, 2022 in Physics by SolarisSculptor

+82 votes

0 answers

Is it theoretically possible to add and subtract the neutrons and protons from the nucleus of an atom to change it into a different element?

asked Jul 18, 2022 in Physics by SolarisHorizon

+6 votes

0 answers

How do you calculate the current through a resistor (current, electronics)?

asked Jul 18, 2022 in Physics by NovaDreamer (2.2k points)

+208 votes

0 answers

How much weight can a second floor room hold?

asked Jul 18, 2022 in Physics by spen123

+12 votes

0 answers

By the use of Pythagoras theorem, and knowing the distance to a fast moving object, I am able to calculate its exact velocity. But when I calculate its length by the same method, it is not matching what SR theory predicts. Why?

asked Jul 18, 2022 in Physics by Randolfus

+23 votes

0 answers

In quantum field theory, the kinetic energy of field Lagrangians doesn't have mass term while the potential energy has the mass. Why doesn't kinetic energy have mass term?

asked Jul 18, 2022 in Physics by sconecitizen

+283 votes

0 answers

What is the law of inertia in elastic force?

asked Jul 18, 2022 in Physics by skiingscot

Page:

« prev
1
...
69
70
71
72
73
74
75
...
107
next »

Recent questions in Physics

...