Recent questions in Physics

+26 votes

0 answers

What are some ways to measure gravity waves scientifically? Why aren't they used more often than they currently are now?

asked Jul 18, 2022 in Physics by woodsmith

+126 votes

0 answers

If electromagnetic waves such as microwaves, UV, X-ray, and gamma ray are used to sterilize pathogens, which one is the fastest?

asked Jul 18, 2022 in Physics by Richard_

+81 votes

0 answers

What is the K.E. of a body of mass 12kg and moving with a velocity of 400m/s?

asked Jul 18, 2022 in Physics by EmberOracle

+310 votes

0 answers

How do scientists differentiate between the red shift due to distance and red shift caused by speed?

asked Jul 17, 2022 in Physics by Saruyama

+226 votes

0 answers

What is a sine wave? Is it periodic or non-periodic? If so, why?

asked Jul 17, 2022 in Physics by MysticOracle

+22 votes

0 answers

How does gravity work? Does it increase with distance from an object with mass (black holes and stars)? If so, how much does that increase have to be for something to not return back into orbit around said object?

asked Jul 17, 2022 in Physics by MysticHarmony

+13 votes

0 answers

What is the definition of non-ionizing radiation? How can radio waves cause cancer if they are not powerful enough to ionize atoms?

asked Jul 17, 2022 in Physics by Shiny head

+165 votes

0 answers

Is perpetual motion a hoax?

asked Jul 16, 2022 in Physics by LuminousScribe

+82 votes

0 answers

Why do FM radio signals shift frequency?

asked Jul 16, 2022 in Physics by Iron_Mike

+14 votes

0 answers

. Why is the upward thrust stronger than downward thrust? 2. Why is upthrust.always acted.in upward direction?

asked Jul 16, 2022 in Physics by ThunderStrike87

+292 votes

0 answers

What is the expansion rate of our universe? Is it faster than the speed of light? If not, why not? Is there a boundary to expansion in infinity like dark energy/matter?

asked Jul 16, 2022 in Physics by Sid

+231 votes

0 answers

How intelligent was Richard Feynman?

asked Jul 16, 2022 in Physics by phlbridge

+125 votes

0 answers

How do I convert 50km/h to m/s?

asked Jul 16, 2022 in Physics by tryin it all myself

+93 votes

0 answers

A spaceship accelerates at 150 m/s2 from rest. How long does it take to reach a 1.2 km distant asteroid?

asked Jul 16, 2022 in Physics by Arthur Haslehurst

+19 votes

0 answers

Is the Big Bang theory the theory of everything?

asked Jul 15, 2022 in Physics by AndrewAston

+1 vote

0 answers

How do you think the discovery of locally higher pressures created by fast-rising volcanic plumes will impact our understanding of atmospheric physics?

asked Jul 15, 2022 in Physics by Philp1863

+66 votes

0 answers

What is an atom with 12 electrons, 13 neutrons, and 11 protons?

asked Jul 15, 2022 in Physics by CrystalNova

+14 votes

0 answers

If drift velocity is constant in the circuit that kinetic energy is constant, why are there drops or changes in potential difference across components?

asked Jul 15, 2022 in Physics by Sheep

+13 votes

0 answers

What are the effects of entropy? Can technology reverse them?

asked Jul 15, 2022 in Physics by STGO

+60 votes

0 answers

Which substance exists naturally on earth in all three classical states of matter?

asked Jul 15, 2022 in Physics by Davey

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