Recent questions in Physics - Physicsgurus Q&A

+15 votes

0 answers

What is cosmic inflation? Why do physicists believe in it?

asked May 15, 2023 in Physics by rocketron (3.5k points)

+160 votes

0 answers

If work done is a scalar quantity, then why is work done positive or negative?

asked May 15, 2023 in Physics by Charles Coldwell

+5 votes

0 answers

Can a magnetic field exist without a gravitational field?

asked May 15, 2023 in Physics by Paul Harper

+3 votes

0 answers

What is the difference between anti-radiation eyeglasses and anti-blue light eyeglass? If there is a difference, then which is better to use?

asked May 15, 2023 in Physics by andyspark

+287 votes

0 answers

How can I understand physics when it doesn't exactly 'click' for me?

asked May 14, 2023 in Physics by Monkey Chops

+13 votes

0 answers

Do antiparticles decay into antigravity instead of normal matter/energy in other universes? Are they always used to create new particles where new universes are formed from them?

asked May 14, 2023 in Physics by Geeeham

+22 votes

0 answers

How is the theory of evolution different from previous theories?

asked May 14, 2023 in Physics by ZephyrSculptor

+12 votes

0 answers

If time travel forward and backwards were possible, why shouldn't everyone own a time machine?

asked May 14, 2023 in Physics by Gaz_2020

+7 votes

0 answers

If you are going 200 miles per hour, how long would it take you to travel 1 mile?

asked May 14, 2023 in Physics by Dbosoz

+1 vote

0 answers

Why doesn't the Earth's rotational centrifugal force fling us into space at the equator?

asked May 14, 2023 in Physics by Gaulirmorn

+112 votes

0 answers

Does the classical Doppler effect (frequency is different depending on which one is moving, the observer or the source) conflict with the Galileo principle of relativity (no mechanical experiment is able to tell two inertial frames apart)?

asked May 14, 2023 in Physics by Baxi Boy

+165 votes

0 answers

Which one of the 3 pieces of evidence do you think is the most convincing in supporting the big bang theory? (1) The expanding universe, (2) The abundance of light elements in the universe or (3) The Cosmic background radiation. Justify your answer.

asked May 14, 2023 in Physics by EmmaG

+15 votes

0 answers

How do we know if Einstein's theories of general and special relativity are correct?

asked May 14, 2023 in Physics by LuminousScribe

+5 votes

0 answers

Is the creation of an artificial localized magnetic field on board a spaceship the answer to deep space travel?

asked May 14, 2023 in Physics by SeraphicFlare

+17 votes

0 answers

Theoretically, considering we could make trillions of nano bots to seek out every Atom after an explosion and hyper freeze the air could we “go back in time?” Given that every nano bot would be able to place every atom back to exactly where it was.

asked May 14, 2023 in Physics by swede (3.1k points)

+125 votes

0 answers

How do I find a normal force?

asked May 14, 2023 in Physics by metal mickey

+5 votes

0 answers

Are there regions of spacetime that have curvature but do not have masses (such as stars and galaxies) in them?

asked May 14, 2023 in Physics by David Summers

+11 votes

0 answers

Can we measure the weight of an object while it is falling freely?

asked May 14, 2023 in Physics by Azh

+23 votes

0 answers

What are the different reasons why we are unable to see black holes with the human eye?

asked May 14, 2023 in Physics by NebulaFlare

+274 votes

0 answers

How does surveying over great distances take into account the curvature of the Earth's surface?

asked May 14, 2023 in Physics by MysticVerse