Recent questions in Physics

+9 votes

0 answers

What do physicists mean when they say time is a fourth dimension?

asked Jul 12, 2022 in Physics by Bolintk

+128 votes

0 answers

Ron Mallett built a laser time machine that can send information back 10 years in time. Is there any possibility that with future modifications that it could send it back more than 10 years?

asked Jul 12, 2022 in Physics by L thompson (2.4k points)

+49 votes

0 answers

Planets, stars and galaxies all rotate and spin. Does the universe as a whole spin also?

asked Jul 12, 2022 in Physics by Dhiraj Lad

+19 votes

0 answers

A ball of mass 5.0kg hits a smooth vertical wall normally with a speed of 2ms-1. What is the magnitude of the resulting impulse?

asked Jul 12, 2022 in Physics by Tazmon

+38 votes

0 answers

How can something be both true and false in quantum mechanics?

asked Jul 12, 2022 in Physics by The Happy Builder

+78 votes

0 answers

Why do sound particles not obey gravity?

asked Jul 11, 2022 in Physics by fff

+49 votes

0 answers

If the universe is expanding in all directions from every point, how can the overall shape (perimeter) of the universe not be a sphere? If so, why is the universe claimed to be flat?

asked Jul 11, 2022 in Physics by StellarNova

+6 votes

0 answers

Is there a reason the speed of light is what it is and not something else?

asked Jul 11, 2022 in Physics by revellers

+100 votes

0 answers

How can I get better in physics subject? Are there any apps for see students to study through mobile?

asked Jul 11, 2022 in Physics by supportcrave (3.8k points)

+11 votes

0 answers

What is the minimum rotation speed for a planet or star to break free from its own gravitational field?

asked Jul 11, 2022 in Physics by mully123

+188 votes

0 answers

If the Earth were a grain of sand, then how big would the rest of the universe be in comparison?

asked Jul 11, 2022 in Physics by ChrisCC90

+1 vote

0 answers

What is the name of the type of motion an object is moving in when it is moving in a clockwise circle around another object?

asked Jul 11, 2022 in Physics by slquoue

+60 votes

0 answers

Is it more possible to get a tire punctured at low or high speed?

asked Jul 11, 2022 in Physics by The Happy Builder

+68 votes

0 answers

What does compactified manifold mean in string theory?

asked Jul 10, 2022 in Physics by Dunaldo70

+5 votes

0 answers

Why is one farad a very large unit?

asked Jul 10, 2022 in Physics by ThomasPlumbas

+46 votes

0 answers

If everything originates from a field is there an explanation of how or why the fields themselves exist?

asked Jul 10, 2022 in Physics by Cliff Rees

+18 votes

0 answers

Why is the speed of light constant?

asked Jul 10, 2022 in Physics by oands

+9 votes

0 answers

How much does a liter of water weigh?

asked Jul 10, 2022 in Physics by LuminousWhirl

+297 votes

0 answers

What would happen if light waves could be bent by gravity?

asked Jul 10, 2022 in Physics by NebulaDreamer

+124 votes

0 answers

A metal wire of length 1cm and of uniform diameter has a resistance of 0.852. What is the resistance of a 50cm wire coil made of the same material but having twice its diameter? A. 25052 B. 1252 C. 402 D. 102?

asked Jul 10, 2022 in Physics by CrystalScribe

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