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Recent questions and answers in Physics
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A car is travelling at 54 km per hour. If brakes are applied to produce retardation of 5 metres per second squared, can you find the time taken by it to stop?
answered
May 26, 2023
in
Physics
by
lpl
+8
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The Lagrange of a charge particle moving in an electromagnetic field is given by L=1/2mv^2+q (V.A-phi). How do I derive an expression for the Hamiltonian and the corresponding Hamiltonian equation?
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May 26, 2023
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Physics
by
CrystalScribe
+9
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What is the angular acceleration of an object that is accelerated from rest to 20,000 rotation per minute in five minutes?
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May 26, 2023
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Physics
by
Shane Hagan
+17
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A diesel train accelerates uniformly from rest to 70km/h for 30 seconds, continues at this speed for 60 seconds and decelerates uniformly to rest in 60 seconds. What is the total distance covered?
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May 26, 2023
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Physics
by
SazzDazz
+7
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Given a prone sniper within a very long rectangle-shaped hallway (w/ air vacuumed out), if one can adjust for optics & force (scope & gunpowder), why should the target’s Z-axis location impact accuracy; how does the point of perpendicularity shrink?
answered
May 25, 2023
in
Physics
by
SeraphicMystic
+96
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If light bends around corners, why can't we see what's around the corner? We can hear people talk around the corner.
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May 25, 2023
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Physics
by
Botch
+94
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What if the moment of inertia is double the deflection?
answered
May 25, 2023
in
Physics
by
Eagles83
+13
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Can you explain biology with physics and chemistry?
answered
May 25, 2023
in
Physics
by
Plec
+15
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How many seconds are in a year?
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May 25, 2023
in
Physics
by
Boiled Egg
+19
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Is there a correlation between your top speed in m/s and your 100m time?
answered
May 25, 2023
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Physics
by
yorkshireboy
+6
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How can you prevent a heat wave from occurring?
answered
May 24, 2023
in
Physics
by
MysticEnigma
+274
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Why is a 250 pound skier faster, on the same quality but larger ski, than a 150 pound skier on the same slope? (the gravitational acceleration constant is a fixed number after all)?
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May 24, 2023
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Physics
by
Ant62
+14
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Do all forms of electromagnetic radiation require a material medium to propagate (like radio waves or infrared rays)?
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May 24, 2023
in
Physics
by
The Denes
+213
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How can we clear the negative energy between twin flames? Are there any easy tips?
answered
May 24, 2023
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Physics
by
jeznotts
+2
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When two compact objects (black holes, neutron stars) are orbiting each other and giving off gravitational waves, do they produce a gravitational wave singularity at the barycenter? That is, is there infinite strength GW's at the barycenter?
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May 24, 2023
in
Physics
by
BaldyMatt1976
+208
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What was the motivation behind Noether's theorem about conservation laws?
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May 24, 2023
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Physics
by
Dyke Pullover
+6
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If the Earth were a ball, would lighthouses work?
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May 24, 2023
in
Physics
by
davnav
+12
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What are the theories of time? Do any of them say that time is infinite?
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May 24, 2023
in
Physics
by
LuminousMystic
+265
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How are Planck units called natural if they still contain units in SI?
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May 23, 2023
in
Physics
by
CelestialCharm
+8
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Is it possible to have constant velocity and non-zero acceleration?
answered
May 23, 2023
in
Physics
by
Greenthinkingdan
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