Recent questions in Physics

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If a car is moving with uniform velocity, then by Newton's first law the net external force acting on the body is zero. So, what is the external force which cancels out friction in this case?

asked Mar 12, 2022 in Physics by SeraphicTwilight

+2 votes

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How can we find one-dimensional potential energy from two-dimensional motion?

asked Mar 12, 2022 in Physics by DaveyC

+18 votes

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How can friction hold something still if it only acts against moving objects?

asked Mar 12, 2022 in Physics by Pancake

+10 votes

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Are the celestial bodies stationed by gravitational force?

asked Mar 12, 2022 in Physics by SeraphicVerse

+273 votes

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Are there any theories on how humans could make a working wormhole or time machine?

asked Mar 12, 2022 in Physics by Finnira

+19 votes

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A 0.23 kg stone is thrown 17 m and reaches the ground at a speed of 13 m/s. If there had been no air resistance, how quickly would the stone have landed?

asked Mar 12, 2022 in Physics by detrtcx

+82 votes

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What happens to the mass that disappears when we convert energy into light and other forms of radiation?

asked Mar 11, 2022 in Physics by AstralEnigma

+218 votes

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Are there things that cannot be considered physical?

asked Mar 11, 2022 in Physics by ShahidH

+27 votes

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Is it bad practice to call a static method via an object?

asked Mar 11, 2022 in Physics by Switcher

+21 votes

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Can humans defy gravity and fly without the help of machines?

asked Mar 11, 2022 in Physics by ubergay

+9 votes

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A car accelerates from 20 m/s to 40m/s in 10 seconds. What is the distance traveled by the car during the 10 seconds?

asked Mar 11, 2022 in Physics by EmberSeeker

+7 votes

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Which is more difficult, applied physics or pure physics? Why?

asked Mar 11, 2022 in Physics by NovaCharm

+3 votes

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What is the formula of a³+b³?

asked Mar 11, 2022 in Physics by Kadir

+27 votes

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The photoelectric effect proved that light wave has particle properties. Now that we've discovered gravitational wave, can we conduct a similar experiment like photoelectric effect to find out whether graviton particle exists or not?

asked Mar 11, 2022 in Physics by votecurriculum

+8 votes

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Are magnetic fields different to electric fields or just another manifestation of electric fields?

asked Mar 11, 2022 in Physics by Cecilb70

+25 votes

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What are the implications of an expanding universe for general relativity?

asked Mar 11, 2022 in Physics by CelestialVerse

+15 votes

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Can force exist without energy (the energy I mean here is not force making effects on things. The energy I mean is like a source) so for better understanding, can there be force without having an energy source? Answer is probably no.

asked Mar 11, 2022 in Physics by StellarHarmony

+12 votes

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What evidence is there for black holes at the centre of galaxies? Specifically observational evidence

asked Mar 11, 2022 in Physics by dearsubstance

+12 votes

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How far does a car travel if it accelerates from rest to 30 miles per hour (mph) in 8 seconds?

asked Mar 10, 2022 in Physics by King Drip

+21 votes

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What are complex numbers and why are they useful in physics? How does one actually calculate them using real values (for example)?

asked Mar 10, 2022 in Physics by John Ennis

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