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Undergrad PBS Einstein show is a history of energy

Oct 21, 2005 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 5K

Undergrad Applying Newton's cooling equation to a pipe cooling

Oct 13, 2009 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 6K

Undergrad Bottle of supercooled water + agitation = some ice and water

May 14, 2011 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 4K

Graduate Calculating Peak Force of Falling Object with Load Cell and Steel Cable

Jun 12, 2009 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 4K

Undergrad Distance traveled by wheel with varying diameter and weight

Dec 11, 2010 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 4K

Graduate Calculate refrigerant temp inside evaporator based on exit temp and pressure

Sep 12, 2011 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 6K

Graduate Can Changing Hole Diameters Result in Equal Volume Flow Rate in a Pipe?

Mar 11, 2009 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 7K

Undergrad What to learn in classical mechanics?How to learn it well?

Aug 20, 2007 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 8K

Undergrad Water & Steam Tables: Understanding Specific Density

Jan 1, 2009 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 8K

Graduate The stiffness matrix in matrix analysis of strutures

Jul 12, 2006 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 8K

Graduate How is Pressure Calculated in a Moving Fluid for Sound Waves?

Nov 17, 2007 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 12K

Graduate Orbital Slingshot and Conservation of Momentum Confusion

Apr 8, 2019 · Replies 9 · Apr 15, 2019

Replies: 9

Views: 7K

Undergrad Axial loading and the change of wall thickness in a cylinder

Nov 8, 2010 · Replies 1 · Apr 14, 2019

Replies: 1

Views: 6K

Graduate Comparing pressure losses in compressible flow between air and natural gas

Apr 9, 2010 · Replies 1 · Apr 14, 2019

Replies: 1

Views: 2K

Undergrad How Do I Calculate the Additional Kinetic Energy Needed to Escape Earth's Orbit?

Nov 1, 2004 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 5K

Undergrad Throwing a ball horizontally on the moon and pushing it in the spacestation

Apr 7, 2019 · Replies 7 · Apr 13, 2019

Replies: 7

Views: 7K

Graduate Motorcycle: Lean Angle, Speed, and Turn Radius

Jan 22, 2004 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 15K

Graduate Need help: Trying to find the mass of a tortoise shell using a lever

Dec 7, 2013 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 2K

Graduate Calculating Deflagratio Pressure in a Closed Vessel

Nov 26, 2010 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 3K

Undergrad Calculating Saturation Vapor Pressure?

May 27, 2012 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 10K

Graduate Slip condition between two parts joined together by shrink-fitting?

Jan 30, 2012 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 2K

Undergrad Calculating friction loss (fluid dynamics)?

Apr 10, 2007 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 6K

Undergrad Pressures distribution: solid sphere on a flat surface

Apr 12, 2019 · Replies 4 · Apr 13, 2019

Replies: 4

Views: 2K

High School How to work out Joules needed to perform work

Apr 11, 2019 · Replies 16 · Apr 12, 2019

Replies: 16

Views: 8K

Graduate Formula for fictitious moments

Apr 10, 2019 · Replies 1 · Apr 12, 2019

Replies: 1

Views: 2K

High School Why do position vectors have an arrow on top of them?

Jul 20, 2018 · Replies 11 · Apr 10, 2019

Replies: 11

Views: 8K

High School How Can You Model a Man Sliding on Rough Ice with Intermittent Pushing?

Apr 10, 2019 · Replies 3 · Apr 10, 2019

Replies: 3

Views: 4K

Undergrad Why does salt reduce the freezing point of water?

Apr 9, 2019 · Replies 5 · Apr 10, 2019

Replies: 5

Views: 8K

High School Modeling Quickly Pushed Boxes: A Beginner's Guide

Apr 9, 2019 · Replies 15 · Apr 9, 2019

Replies: 15

Views: 6K

Undergrad Question about the moment/torque principle

Apr 7, 2019 · Replies 19 · Apr 9, 2019

Replies: 19

Views: 4K

Graduate Air flow through a hole in a submerged pressure tank

Feb 13, 2019 · Replies 13 · Apr 8, 2019

Replies: 13

Views: 21K

High School Why Does a Spinning Object Wobble but Not Tumble?

Mar 30, 2019 · Replies 20 · Apr 7, 2019

Replies: 20

Views: 6K

Undergrad How to calculate mechanic power a person outputs?

Apr 7, 2019 · Replies 3 · Apr 7, 2019

Replies: 3

Views: 4K

High School 'IdealFluid' Describe Behavior of Matter in Phase State of liquid/gas+

Apr 6, 2019 · Replies 1 · Apr 7, 2019

Replies: 1

Views: 4K

Graduate Bernoulli Principle from a molecular scale

Mar 30, 2019 · Replies 9 · Apr 6, 2019

Replies: 9

Views: 6K

Undergrad Is Brownian Motion actually random or does it follow determinism?

Apr 4, 2019 · Replies 12 · Apr 5, 2019

Replies: 12

Views: 5K

Undergrad Nuclear Explosion in Space… How would it work?

Mar 5, 2019 · Replies 31 · Apr 4, 2019

2

Replies: 31

Views: 19K

Undergrad Classical Chaos: Can a Particle Move Chaotically and Be Subject to Force?

Jan 27, 2017 · Replies 15 · Apr 4, 2019

Replies: 15

Views: 6K

Graduate Is the propagation velocity slow down at low audio frequency?

Apr 2, 2019 · Replies 4 · Apr 2, 2019

Replies: 4

Views: 2K

Graduate How to measure the Sun's acceleration relative to the galaxy?

Mar 28, 2019 · Replies 6 · Apr 2, 2019

Replies: 6

Views: 4K

High School Questioning Forces: A Physics Teacher's Ambiguity

Mar 24, 2019 · Replies 14 · Apr 2, 2019

Replies: 14

Views: 5K

Graduate Classical Mechanics Monographs: Re-Discovering Whittaker's 1917 Problem

Apr 1, 2019 · Replies 2 · Apr 1, 2019

Replies: 2

Views: 3K

Undergrad Acceleration after applying a force

Mar 31, 2019 · Replies 4 · Mar 31, 2019

Replies: 4

Views: 3K

Undergrad Circus physics problem (chinese pole)

Mar 31, 2019 · Replies 1 · Mar 31, 2019

Replies: 1

Views: 3K

Undergrad How does calculus of variations handle explicit time dependence in Lagrangian?

Mar 28, 2019 · Replies 7 · Mar 31, 2019

Replies: 7

Views: 4K

Undergrad Fixing Ship Ramp: Winch vs Windlass

Mar 29, 2019 · Replies 4 · Mar 31, 2019

Replies: 4

Views: 4K

Graduate Non-Rotation Matrix Split: Hello

Mar 30, 2019 · Replies 1 · Mar 30, 2019

Replies: 1

Views: 1K

Undergrad Galilean Invariance and constraints on Forces.

Mar 29, 2019 · Replies 4 · Mar 30, 2019

Replies: 4

Views: 2K

Undergrad Given a force in 3d what is the resulting force and torque?

Mar 29, 2019 · Replies 7 · Mar 30, 2019

Replies: 7

Views: 4K

Graduate Finding Equilibriums on a Cone with a Chain Loop

May 20, 2016 · Replies 3 · Mar 30, 2019

Replies: 3

Views: 2K

High School Does an orbiting mass exert force on what it is orbiting around?

Mar 29, 2019 · Replies 7 · Mar 29, 2019

Replies: 7

Views: 3K

Undergrad Why do short wavelengths carry a huge amount of data not long?

Mar 29, 2019 · Replies 3 · Mar 29, 2019

Replies: 3

Views: 4K

Undergrad C Could a Jet Helicopter with Wings Fly at Supersonic Speeds?

Mar 28, 2019 · Replies 4 · Mar 29, 2019

Replies: 4

Views: 5K

Graduate Question about hydraulic jump assumptions

Mar 28, 2019 · Replies 3 · Mar 29, 2019

Replies: 3

Views: 4K

Undergrad Equation for falling objects that includes terminal velocity

Jan 29, 2019 · Replies 24 · Mar 28, 2019

Replies: 24

Views: 5K

Undergrad What is the maximum velocity of a bullet at the instant it leaves the barrel?

Mar 27, 2019 · Replies 5 · Mar 28, 2019

Replies: 5

Views: 5K

Undergrad Comparing Water and Ice Melting for fighting fires

Mar 18, 2019 · Replies 27 · Mar 27, 2019

Replies: 27

Views: 8K

High School How Fast Must a Grasshopper Jump to Reach the Other End of a Straw?

Mar 12, 2019 · Replies 15 · Mar 27, 2019

Replies: 15

Views: 5K

High School Why is Kinetic Energy a scalar quantity?

Mar 26, 2019 · Replies 4 · Mar 26, 2019

Replies: 4

Views: 6K

Graduate Velocity gradient decomposition of a fluid flow

Mar 24, 2019 · Replies 22 · Mar 26, 2019

Replies: 22

Views: 3K

Graduate Compression of an object under it's own weight.

Mar 23, 2019 · Replies 4 · Mar 26, 2019

Replies: 4

Views: 3K

Undergrad Deriving Navier-Stokes Equation

Mar 25, 2019 · Replies 4 · Mar 25, 2019

Replies: 4

Views: 2K

Undergrad Do binoculars change the distance which the eyeball focuses?

Mar 23, 2019 · Replies 4 · Mar 23, 2019

Replies: 4

Views: 2K

Undergrad Angular momentum L=rxP and L=I x omega ?

Mar 23, 2019 · Replies 1 · Mar 23, 2019

Replies: 1

Views: 6K

Undergrad Uniform Circular Motion: some help with the math proof?

Mar 22, 2019 · Replies 5 · Mar 22, 2019

Replies: 5

Views: 2K

Undergrad Projectile Motion: Path's length?

Mar 21, 2019 · Replies 18 · Mar 22, 2019

Replies: 18

Views: 3K

Graduate Pressure in Forces on Submerged Surfaces

Mar 21, 2019 · Replies 2 · Mar 22, 2019

Replies: 2

Views: 2K

Undergrad Can a Metal Ball Levitate Using an Electromagnet?

Jul 14, 2017 · Replies 14 · Mar 21, 2019

Replies: 14

Views: 7K

Undergrad Center of Mass of a jetpack-Earth System

Mar 20, 2019 · Replies 7 · Mar 21, 2019

Replies: 7

Views: 3K

Undergrad Doubt in the Application of a Pseudo Force

Mar 19, 2019 · Replies 2 · Mar 21, 2019

Replies: 2

Views: 2K

Undergrad Mechanics of a car turning left

Mar 12, 2019 · Replies 30 · Mar 20, 2019

2

Replies: 30

Views: 10K

High School Confusion about the Strain Energy when loading/unloading a sample

Mar 13, 2019 · Replies 11 · Mar 20, 2019

Replies: 11

Views: 10K

Graduate Rotating sphere which separates into hemispheres

Mar 13, 2019 · Replies 9 · Mar 19, 2019

Replies: 9

Views: 2K

Graduate Rigid body mechanics, solution seems incorrect?

Mar 19, 2019 · Replies 1 · Mar 19, 2019

Replies: 1

Views: 3K

Undergrad Typo in elliptical orbit energy derivation?

Mar 17, 2019 · Replies 2 · Mar 19, 2019

Replies: 2

Views: 4K

Undergrad Mathematical Analysis Of V^2 = Vo^2 + 2a(X-Xo)

Mar 18, 2019 · Replies 5 · Mar 19, 2019

Replies: 5

Views: 14K

Undergrad Can we hear beats between ultrasounds in the audible range?

Mar 15, 2019 · Replies 23 · Mar 19, 2019

Replies: 23

Views: 8K

Undergrad Would acceleration under water affect the person?

Mar 16, 2019 · Replies 10 · Mar 18, 2019

Replies: 10

Views: 3K

Undergrad Sauna rocks: how do they work?

Mar 17, 2019 · Replies 11 · Mar 18, 2019

Replies: 11

Views: 10K

Undergrad Calculating Air Density at High Elevations

Mar 17, 2019 · Replies 5 · Mar 18, 2019

Replies: 5

Views: 6K

Graduate Why Are My Newton's Rings Experiment Results Inconsistent?

Mar 17, 2019 · Replies 5 · Mar 18, 2019

Replies: 5

Views: 13K

Graduate Ballistocardiograph and conservation of momentum

Mar 17, 2019 · Replies 8 · Mar 17, 2019

Replies: 8

Views: 4K

Undergrad Power output of a theoretical generator

Mar 10, 2019 · Replies 12 · Mar 17, 2019

Replies: 12

Views: 9K

Undergrad Pressure on a submerged object

Mar 13, 2019 · Replies 4 · Mar 16, 2019

Replies: 4

Views: 2K

Undergrad Pressure changes of a fluid flowing through a horizontal pipe

Mar 15, 2019 · Replies 10 · Mar 16, 2019

Replies: 10

Views: 6K

Undergrad Simple harmonic motion interpretation problem

Mar 15, 2019 · Replies 5 · Mar 15, 2019

Replies: 5

Views: 2K

High School Forced Oscillation: Understanding Force & Mass

Mar 14, 2019 · Replies 1 · Mar 14, 2019

Replies: 1

Views: 3K

High School Atmospheric pressure per square cm

Mar 12, 2019 · Replies 7 · Mar 13, 2019

Replies: 7

Views: 4K

High School Movement in a Vacuum: Does Acceleration Show Anything?

Mar 8, 2019 · Replies 12 · Mar 13, 2019

Replies: 12

Views: 11K

Undergrad Phase difference between sound waves

Mar 12, 2019 · Replies 3 · Mar 12, 2019

Replies: 3

Views: 2K

High School Is it possible to "redistribute" the weight of the table....?

Mar 7, 2019 · Replies 6 · Mar 12, 2019

Replies: 6

Views: 10K

Undergrad When would a rocket return that was at escape velocity

Mar 9, 2019 · Replies 13 · Mar 11, 2019

Replies: 13

Views: 10K

Undergrad Subsonic and Supersonic Airflow Through a Constriction

Feb 27, 2019 · Replies 13 · Mar 10, 2019

Replies: 13

Views: 16K

Undergrad Real life elastic collision and variation of kinetic energy

Mar 10, 2019 · Replies 3 · Mar 10, 2019

Replies: 3

Views: 1K

Undergrad How Does Gravitational Jerk Affect Acceleration in Space?

Feb 16, 2019 · Replies 14 · Mar 9, 2019

Replies: 14

Views: 22K

Undergrad Simple harmonic oscillators on floating object in liquid

Mar 9, 2019 · Replies 6 · Mar 9, 2019

Replies: 6

Views: 10K

Graduate Euler Equations for Dynamics of rigid body

Mar 6, 2019 · Replies 5 · Mar 9, 2019

Replies: 5

Views: 3K

Undergrad Flow (liquid or gas) across a rotating surface's face

Mar 7, 2019 · Replies 5 · Mar 9, 2019

Replies: 5

Views: 2K

Undergrad Force due rotation about axis parallel to centroidal axis

Mar 7, 2019 · Replies 1 · Mar 7, 2019

Replies: 1

Views: 10K

Undergrad Is this proof regarding massless strings correct?

Mar 1, 2019 · Replies 19 · Mar 7, 2019

Replies: 19

Views: 15K

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