Recent questions in Physics

+16 votes

0 answers

What is the law of entropy? How does it affect time travel?

asked Nov 17, 2022 in Physics by eskimo

+36 votes

0 answers

Lighting excites the earthy ionosphere cavity to produce Schumann resonance, why can't we do the same?

asked Nov 17, 2022 in Physics by EmberWhirl

+11 votes

0 answers

What is meant by the perpetual existence of a company?

asked Nov 17, 2022 in Physics by Johnpg

+23 votes

0 answers

Do strong electric fields or magnetic fields exist in the Interstellar medium?

asked Nov 17, 2022 in Physics by greenmanx

+131 votes

0 answers

Can you explain entanglement, superposition, and coherence in quantum mechanics?

asked Nov 17, 2022 in Physics by kesh

+663 votes

0 answers

What instrument can be used to measure the length of a simple pendulum?

asked Nov 17, 2022 in Physics by EmberAlchemy

+41 votes

0 answers

If E=mc², then when water is heated, its energy increases. Doesn’t it mean that its mass increases, too? However, a science question at school showed that the mass remained the same. Which one is right?

asked Nov 16, 2022 in Physics by ernestbrearules

+8 votes

0 answers

asked Nov 16, 2022 in Physics by rflook

+9 votes

0 answers

If you wanted to create artificial gravity, couldn’t you just accelerate an object at some speed and wouldn’t that simulate gravity?

asked Nov 16, 2022 in Physics by handcraft

+287 votes

0 answers

Is it possible that our entire universe is within a black hole?

asked Nov 16, 2022 in Physics by NebulaHorizon

+308 votes

0 answers

What is the relationship between an object's mass and the gravitational force and escape velocity on Earth?

asked Nov 16, 2022 in Physics by NebulaFlare

+10 votes

0 answers

How does physics relate to life?

asked Nov 16, 2022 in Physics by BOB THE B

+1 vote

0 answers

Why does the specific loss of energy (334 kJ/kg) and the corresponding specific loss of mass, (3.7 ng/kg), during the solidification of water, not - ie not in the slightest - contradict the assertion "mass and energy are conserved"?

asked Nov 16, 2022 in Physics by benwinch

+248 votes

0 answers

How do you calculate the mass of an object using a spring balance and coins on each side?

asked Nov 16, 2022 in Physics by nakedterry

+8 votes

0 answers

Why do we study astronomy using infrared (IR) light instead of ultraviolet (UV) or visible light?

asked Nov 15, 2022 in Physics by Bobby Dazzler

+22 votes

0 answers

Do I really need to put my phone on airplane mode while flying?

asked Nov 15, 2022 in Physics by twisty

+5 votes

0 answers

The cosmic microwave microwave background radiation is minus 450 degrees F, cold and invisible. Is this leftover Big Bang radiation proof the universe's cooling has peaked and can't get colder?

asked Nov 15, 2022 in Physics by NovaDreamer

+3 votes

0 answers

Does the orbital period depend on distance in circular motion?

asked Nov 15, 2022 in Physics by Jack Downey

+32 votes

0 answers

Is there any such thing as constant velocity if one consider the path of presumptive constant velocity to be part of a circle with infinitely large radius? Does it mean that acceleration exist no matter what due to a= w^2(-r) or v^2/(-r)?

asked Nov 15, 2022 in Physics by ElectricNova (3.1k points)

+23 votes

0 answers

A car travels at a constant speed of 40 mph. How far will the car travel in 45 minutes?

asked Nov 14, 2022 in Physics by marcus72

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