User David White

58 votes

Accepted

What happens to the mass of a burned object?

answered Feb 15, 2021 at 17:15

47 votes

Why do we need insulation material between two walls?

thermodynamics thermal-radiation thermal-conductivity

answered Nov 21, 2021 at 22:04

29 votes

Why do my experimental data for Hooke’s law not match the expected data?

newtonian-mechanics forces experimental-physics spring elasticity

answered Jan 18, 2020 at 6:08

20 votes

How can I weigh part of an object?

newtonian-mechanics mass measurements

answered Nov 16, 2021 at 0:01

20 votes

Where is the right place to put the pressure gauge to measure the pressure of a tank?

pressure fluid-statics

answered Oct 24, 2018 at 1:28

16 votes

Why vector is defined as one straight line?

vectors geometry

answered May 22, 2021 at 20:22

14 votes

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

thermodynamics electricity phase-transition physical-chemistry liquid-state

answered Jun 11 at 15:51

14 votes

Why is a liquid nitrogen canister not cold on the outside when inside the temp of the sealed liquid is -320F?

thermodynamics fluid-dynamics condensed-matter temperature low-temperature-physics

answered Feb 12, 2019 at 21:21

13 votes

Simple check for the global shape of the Earth

curvature earth education

answered Oct 15, 2018 at 19:57

13 votes

Why is the mechanical advantage 8 and not 4 in this pulley system?

homework-and-exercises newtonian-mechanics string

answered Jul 19, 2021 at 21:51

10 votes

Accepted

Basic question about orbital speed

newtonian-mechanics newtonian-gravity orbital-motion planets rocket-science

answered Oct 12, 2021 at 2:18

10 votes

Accepted

Is this textbook answer incorrect?

units dimensional-analysis textbook-erratum

answered Jan 20, 2020 at 16:19

9 votes

Why does a critical point exist?

thermodynamics statistical-mechanics phase-transition states-of-matter phase-diagram

answered Jul 19, 2016 at 16:53

8 votes

When I boil a kettle, what stops all the water from turning (exploding!) in to steam in one go once it reaches 100°C?

thermodynamics water phase-transition

answered Sep 16, 2015 at 23:31

8 votes

How to fix a bad KF flange?

experimental-physics experimental-technique

answered Jan 25, 2019 at 3:18

8 votes

Proof of internal resistance acting like it does

electric-circuits electrical-resistance batteries

answered Apr 19, 2021 at 3:14

7 votes

Accepted

How far do electrons actually move along a conductor under an alternating current?

condensed-matter electric-circuits electrons electric-current conductors

answered Jan 22, 2019 at 18:00

7 votes

Accepted

Why doesn't momentum seem to be conserved here?

energy-conservation momentum

answered Aug 9, 2016 at 18:18

6 votes

Accepted

Would water, given enough heat, instantly vaporize?

thermodynamics water

answered Jun 20, 2016 at 20:17

6 votes

why use sparks on engines?

pressure

answered Aug 23, 2015 at 14:18

6 votes

Crash simulation on Mythbusters

newtonian-mechanics everyday-life collision

answered Apr 29, 2017 at 17:49

5 votes

Would a gas "weigh" less than a liquid if they have the same mass?

experimental-physics fluid-statics weight gas

answered Mar 1, 2017 at 2:20

5 votes

Accepted

Why does the flame of a gas stove not spread backwards?

everyday-life flow combustion

answered Mar 8, 2019 at 3:38

5 votes

A conceptual doubt regarding Forced Oscillations and Resonance

friction frequency oscillators resonance dissipation

answered Jan 8, 2016 at 22:59

5 votes

Direction of water through a pipe

fluid-dynamics everyday-life water flow

answered Jan 12 at 2:03

5 votes

Accepted

Minimum force required to push a car up a slope

newtonian-mechanics forces free-body-diagram

answered Mar 15 at 0:02

5 votes

Would a fluid in free-fall exert a buoyant force on an object submerged in it

newtonian-mechanics forces newtonian-gravity buoyancy free-fall

answered Jun 16, 2019 at 2:50

5 votes

Why are there so many Doppler Effect formulas?

waves frequency wavelength relative-motion doppler-effect

answered Aug 9, 2019 at 15:12

5 votes

Apparent weight in the elevator

newtonian-mechanics forces reference-frames free-body-diagram

answered Dec 27, 2020 at 6:13

4 votes

Can beats be produced by two waves moving in opposite direction?

classical-mechanics waves

answered Feb 9, 2021 at 16:13

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540 Answers

What happens to the mass of a burned object?

Why do we need insulation material between two walls?

Why do my experimental data for Hooke’s law not match the expected data?

How can I weigh part of an object?

Where is the right place to put the pressure gauge to measure the pressure of a tank?

Why vector is defined as one straight line?

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

Why is a liquid nitrogen canister not cold on the outside when inside the temp of the sealed liquid is -320F?

Simple check for the global shape of the Earth

Why is the mechanical advantage 8 and not 4 in this pulley system?

Basic question about orbital speed

Is this textbook answer incorrect?

Why does a critical point exist?

When I boil a kettle, what stops all the water from turning (exploding!) in to steam in one go once it reaches 100°C?

How to fix a bad KF flange?

Proof of internal resistance acting like it does

How far do electrons actually move along a conductor under an alternating current?

Why doesn't momentum seem to be conserved here?

Would water, given enough heat, instantly vaporize?

why use sparks on engines?

Crash simulation on Mythbusters

Would a gas "weigh" less than a liquid if they have the same mass?

Why does the flame of a gas stove not spread backwards?

A conceptual doubt regarding Forced Oscillations and Resonance

Direction of water through a pipe

Minimum force required to push a car up a slope

Would a fluid in free-fall exert a buoyant force on an object submerged in it

Why are there so many Doppler Effect formulas?

Apparent weight in the elevator

Can beats be produced by two waves moving in opposite direction?