Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Electric fields and parallel plates
- F.B
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Solving a Two-Box Frictionless Physics Problem
- Alw
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What are the overtones of a clarinet?
- gapgirl1010
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Finding Electric Field on rod or ring?
- Brad_1234
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Max acceleration of mass-spring system with 0.50 kg mass and 230 N/m spring constant
- hshphyss
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What happens to electrons when atoms collapse into neutron stars?
- PhilipF
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Maximum kinetic energy for force F=F0*e^(-kx)
- brad sue
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Mass of Steam Needed for 1kg of Ice to Yield 20°C Water
- heelp
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How do heat engines work?
- cheez
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Angular speed and rotation problem
- suspenc3
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Calculate the ideal (Carnot) efficiency of a heat engine
- lilkrazyrae
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Forces on an inclined plane: how does the angle affect the normal force and friction?
- avb203796
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Calculating Spring Constant with Hook Weight Included
- burnside
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Specific heat; calormetry (no clue)
- heelp
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How Does the Weight of a 1500kg Animal Affect Earth and a Moon-Like Planet?
- avb203796
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How Does a Rocket's Trajectory Change Near a Star?
- skizm240
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Air pressure in a tire when temperature increases from 15°C to 46°C
- cdm1a23
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Polarized Free Electrons vs Polarity of Static Magnet
- Buckeye
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Wave properiies of supersonic jets
- gapgirl1010
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Maximum weight that helium balloon can lift
- Raiden9
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Football Throwing Problem: Solving for Horizontal Catch Distance
- ckymike
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How does gravity cause movement in a balance?
- eosphorus
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Energy conservation and e = mc^2
- iommi0028
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Minimum angle for a ladder against a frictionless wall
- naeblis
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Tetherball radius doubling: why does momentum seem non-conserved?
- eosphorus
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How does power relate to intensity?
- beanryu
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Final Angular Speed: 0.5m, 0.25kg, 23rad/s, 0.33Nm
- wholf09
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Moment of inertia / torque question
- ptlffrty
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Simple force down an inclined plane question.
- wasteofo2
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Calculating Escape Velocity for Reaching Altitude of 800km
- naeblis
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The Power of Heat: 16x More Energy at 550°C
- lilkrazyrae
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Solving for Extension Needed to Reach Target Distance with a Spring
- SS2006
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Projectile Motion of Diver Problem
- stuart_5
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Temperature at interface between aluminum and iron rods
- JJMezzapesa
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Simplifying a compound pendulum equation
- LENIN
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Having trouble on two problems- magnetism/inductance
- Grandmas
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Find angular speed of a point on the earth
- suspenc3
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Forces on an Accelerating Object
- sweet877
- · Replies 10 ·
How Do You Add Angular Frequencies in Wave Simulations?
- Ginny Mac
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Pendulum problem - What is the magnitude of the torque?
- suspenc3
- · Replies 1 ·
Coefficient of Friction of brakes
- sweet877
- · Replies 12 ·
Finding Angular Acceleration for Easy Rotation Quest
- suspenc3
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How Does a Spring Affect Maximum Compression in a Totally Inelastic Collision?
- suspenc3
- · Replies 3 ·
Zero Electric potential and null electric field
- fmilano
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Center of Gravity: Finding 0.387m from 1kg Sphere?”
- Greenrose
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Calculating the work done by friction
- NutriGrainKiller
- · Replies 11 ·
Calculating Resultant Velocity of Colliding Particles - Homework Check
- elle
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Conservation of Energy and calculating potential energy?
- suspenc3
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Linear velocity of arm segments in volleyball spike
- stuart_5
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What is the lift force exerted by the air on the rotors?
- thschica
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Centripetal force of a block on a string
- physics10
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What Force Lifts the Bicycle Wheel Off the Ground?
- physics10
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Finding hinge force on a uniform boom with tension wire
- naeblis
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Calculate Temperature for Closed Expansion Joint on Steel Bridge
- lilkrazyrae
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Temperature change boiling water
- lilkrazyrae
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How Do Two Friends Balance a 200kg Crate Up Stairs?
- Greenrose
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Solve Collision Lab: Mass 1 & 2 = 0.541 kg | Error %?
- F.B
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Friction Question an incline plane with two angles
- SS_KingTiger
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Calc 320g H2O Melting Ice @ 68°C
- lilkrazyrae
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How Far Must a Glider Travel to Achieve 14 Joules of Work with a 19N Weight?
- lando45
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Change in internal energy when system absorbs heat and does work
- lilkrazyrae
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2 questions (weightlessness and SHM)
- KatieKangaroo
- · Replies 5 ·
Left Hand Rule for a Straight Conductor
- 29 clicks
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PHysics (Torque?) problem BAFFLING
- coey
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Optics - Beam illuminating coin under water
- frozen7
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Finding the sun's surface temperature from solar radiation intensity
- smallbadwolf
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Mechanical Energy: A to B, Forces -70J/+50J
- nrc_8706
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A Problem on Thermal Equilibrium
- smallbadwolf
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Solving an Electrostatic Force Problem
- eok20
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Checking momentum and kinetic energy conservation in a collision lab
- F.B
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Can an object with constant angular velocity experience net torque?
- hshphyss
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How Is Electric Field Amplitude Related to Power in Electromagnetic Waves?
- Tcat
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How Long Does It Take a Rolling Sphere to Reach the Edge of a Rotating Platform?
- dilberg
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Determine the angle of incidence
- lw11011
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Calculating Stretching of a Wire: 2.5m Long
- naeblis
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Finding angular velocity from kinetic energy then angular momentum
- kingyof2thejring
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Does 6 kW Cooling Fan = 6 kW of Heat?
- TSN79
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Induced EMF ~ Faraday's Law/Lenz's Law
- Kali8972
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Finding initial velocity for slingshot egg launcher
- gogetagritz
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Calculating Total Force on a 1/2 Wavelength Section of a Wave-Rope System
- sari47
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Square coil torque balance in vertical magnetic field
- Pseudo Statistic
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Average induced emf in circular loops with changing magnetic field
- Kali8972
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Center of Rotation w/ 4 Objects: Finding Tension
- SS2006
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How Does the De Broglie Wavelength Relate to Scattering Angles?
- QueenFisher
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Golf ball hit at 20 degrees from 4m cliff lands in ocean after 5 seconds
- avb203796
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How Much Energy Is Needed to Convert Ice at -108°C to Water Vapor at 1108°C?
- zhen
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Finding intensity from wavelength and amplitude in Pascals
- Nm
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Calculate Height of Building from Stone Dropping Velocity
- kingyof2thejring
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Special Relativity Andromeda galaxy Question
- IntellectIsStrength
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How much of this energy is stored in the magnetic field of the inductor?
- mr_coffee
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Calculating Average Force: Momentum Question
- Andy87055
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Calculating Scale Readings for Dropped Mass on a Spring
- Leomar
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Why are sit-ups harder with hands behind your head?
- hshphyss
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Calculate the number of revolutions the disc makes
- kingyof2thejring
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Electromagnetic Waves Problem -
- ashkash
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Centripetal vs centrifugal acceleration
- dnt
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Frequency of Pendulum on Moon: 1.18 Hz
- Punchlinegirl
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Equilibrium of a Rigid Body Under Coplanar Forces
- Jordan_
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Work done by torque on airplane propeller after 5 revolutions
- wku_tops
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