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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How Far Will a Sled Travel on Dry Ground After Sliding Down a Frictionless Hill?
- r_swayze
- · Replies 3 ·
Can the speed of sound reach the speed of light?
- michael3.1415
- · Replies 12 ·
Wire resistance when stretched to twice its length
- Mitchtwitchita
- · Replies 7 ·
Finding wavelength and propagation speed from transverse wave equation
- mickellowery
- · Replies 8 ·
Hydrogen atom energy levels and photon wavelengths from n=3
- pinnacleprouk
- · Replies 4 ·
Are Ohm's Law, Kirchhoff's Law, and Thevenin's Theorem Interconnected?
- man0005
- · Replies 1 ·
Special relativity, summation agreement
- Uku
- · Replies 2 ·
[Thermo.] thermal expansion and isothermal compressibility coefficients.
- Je m'appelle
- · Replies 1 ·
Find velocity given y and angle
- mandy9008
- · Replies 31 ·
Work done by friction and applied force on an inclined plane
- mandy9008
- · Replies 7 ·
Circular Orbit of a Spy Satellite: Calculating Altitude and Acceleration
- dvela
- · Replies 1 ·
Two body collision with a spring
- Agent M27
- · Replies 1 ·
Calculating Acceleration of a Rolling Wheelbarrow
- physlover545
- · Replies 1 ·
Finding velocities in F vs x graph
- mandy9008
- · Replies 1 ·
Find the Net Force and Acceleration Question
- iurod
- · Replies 8 ·
What is the resonant frequency of a plucked wire in a closed brass tube?
- SuperCass
- · Replies 14 ·
What is the boiling temperature of the liquid?
- henryc09
- · Replies 1 ·
Block sliding along a looped track
- LarryWineland
- · Replies 3 ·
Interference - Frequency Interference -- Frequency
- SuperCass
- · Replies 5 ·
Energy and Capacitors of metal spheres
- Mitchtwitchita
- · Replies 10 ·
How Do Magnetic Fields Combine at Point P Between Two Current-Carrying Wires?
- Neophyte
- · Replies 3 ·
Do all objects fall at the same rate when dropped from a height?
- davidco2
- · Replies 7 ·
Does a Positively Charged Ball Attract a Neutral Metal Ball?
- taisiu
- · Replies 3 ·
How Long Does It Take for a Particle on a String to Move Through 1.0 km?
- hartfan
- · Replies 2 ·
What is the Acceleration of the System?
- swimstar
- · Replies 1 ·
Creating Weightlessness in an Airplane: Calculating Flight Path Radius
- swimstar
- · Replies 1 ·
Two stones thrown from 50-m cliff 1 second apart
- sona1177
- · Replies 2 ·
How Does Hooke's Law Determine Spring Constant and Extension?
- mandy9008
- · Replies 2 ·
Understanding Forces in an Anchor System
- rambo5330
- · Replies 21 ·
Understanding Momentum Conservation in Particle Collisions
- EventHorizon4
- · Replies 4 ·
Work done by friction with applied force at 32° angle
- mandy9008
- · Replies 6 ·
Find distance before rest given length and angle of incline
- mandy9008
- · Replies 11 ·
Determining altitude given velocities and mass
- mandy9008
- · Replies 8 ·
Writing a project report with no experimental data
- hasan_researc
- · Replies 2 ·
Sled pulled up 18 m hill with force at 45° angle
- Legal
- · Replies 2 ·
Elastic collisions in COM frame
- joriarty
- · Replies 2 ·
Determining spring's max compression on frictionless track
- mandy9008
- · Replies 1 ·
Finding spring constant from equilibrium stretch of 35 cm
- mickellowery
- · Replies 1 ·
Doubling voltage and power in a light bulb
- daysrunaway
- · Replies 3 ·
Physics circular motion, orbits, and gravity
- thesandalman
- · Replies 4 ·
Hooke's Law and the force constant
- mandy9008
- · Replies 6 ·
Velocity and Sound to determine distance
- mikeR3975
- · Replies 12 ·
Finding height given velocities
- mandy9008
- · Replies 2 ·
Newtons Law and Friction Question (along with a contact force question)
- iurod
- · Replies 6 ·
What is the Electric Potential at Points on the Y-Axis with Zero Potential?
- Mitchtwitchita
- · Replies 19 ·
Pressure as a function of time.
- wwshr87
- · Replies 7 ·
What are the resonant wavelengths?
- physics(L)10
- · Replies 5 ·
What is the final temperature after mixing ice and steam?
- kenny1999
- · Replies 10 ·
How is Work and Net Work Calculated in a Supermarket Shopping Scenario?
- mandy9008
- · Replies 6 ·
2-D car collision, finding speed and angle
- clockworks204
- · Replies 4 ·
Dimensions in logarithms after integration
- quantum13
- · Replies 5 ·
What is the Angular Speed of a Falling Rod?
- j2013
- · Replies 2 ·
When Does Runner B Pass Runner A?
- xcompulsion
- · Replies 2 ·
Simple pendulum vertical acceleration at lowest point with 19 kg mass
- SuperCass
- · Replies 6 ·
An AM station is broadcasting a radio wave whose frequency is 1400 kHz.
- jandominic145
- · Replies 4 ·
Angle of refraction of light in water
- Kaldanis
- · Replies 2 ·
Block sliding down wedge (w/ friction), wedge on frictionless floor
- vitus
- · Replies 2 ·
What Was the Initial Speed of the Second Stone to Hit the Water Simultaneously?
- sillybilly
- · Replies 5 ·
Gravitational Potential Energy of an object
- mickellowery
- · Replies 2 ·
Kinetic energy and momentum of a photon at 660 nm wavelength
- ibysaiyan
- · Replies 4 ·
Finding masses of two objects from gravitational force and total mass
- mickellowery
- · Replies 6 ·
Frictionless ramp question. Find angle.
- oldschooleuro
- · Replies 2 ·
Elevator Question (Rotation of rigid body and Energy)
- zewei1988
- · Replies 3 ·
What are the key principles of special relativity?
- Ki-nana18
- · Replies 3 ·
What Is the Van's Velocity After Collision in a Momentum Conservation Problem?
- kompheak vic
- · Replies 3 ·
Damped oscillations: block on spring in water
- SuperCass
- · Replies 5 ·
Friction, object pulled at an angle, given only (mue) and max tension hmmm
- Beamsbox
- · Replies 5 ·
Importance of de Broglie wavelength of matter
- CharlieC89
- · Replies 1 ·
Radioactive decay question Ra to Rn
- rshalloo
- · Replies 1 ·
Physics problem involving gravity?
- bkell27
- · Replies 8 ·
How Does Entropy Change When Tea Cools?
- rizardon
- · Replies 3 ·
What is the significance of a massive relativistic particle?
- hasan_researc
- · Replies 7 ·
Physics problem involving two snowballs?
- bkell27
- · Replies 1 ·
Maximum amplitude formula for driven oscillations
- SuperCass
- · Replies 2 ·
Wave optics and diffraction gratings
- Kalibasa
- · Replies 3 ·
How many appliances will melt aluminum wire?
- dpbrown
- · Replies 4 ·
Torsion Pendulum Oscillation (SHM)
- SuperCass
- · Replies 7 ·
How do you find the volume of three dimensions.
- randomss444
- · Replies 2 ·
Simple parallel plate speed of charge question
- seto6
- · Replies 2 ·
Deriving mean free path of ideal gas
- hasan_researc
- · Replies 5 ·
Carrier transport in semiconductor
- RajChakrabrty
- · Replies 1 ·
What is the R/a Ratio for a 1% Deviation in Electric Field at Point x=a/2?
- seto6
- · Replies 1 ·
Truck tire pressure / load on road
- pescador
- · Replies 18 ·
The Velocity of Block B Relative to A
- kiwifruit
- · Replies 1 ·
Finding wall and floor reaction forces on a 60-degree ladder with a man at 60% height
- skaterbasist
- · Replies 2 ·
Number of sf to be carried forward
- hasan_researc
- · Replies 1 ·
Why do point particles never collide according to Young and Freedman?
- hasan_researc
- · Replies 5 ·
Dicontinuity of electric displacement normal to a boundary
- ailee
- · Replies 2 ·
Linear acceleration in a uniform magnetic field due to torque
- astralboy15
- · Replies 1 ·
Thermodynamics - heat transfer
- urgent
- · Replies 3 ·
With what velocity did the mug leave the counter?
- the_storm
- · Replies 11 ·
Finding x-position for maximum force on a charge between two fixed charges
- Ceenaya19
- · Replies 2 ·
Gravitation and potential energy
- cuman12
- · Replies 3 ·
Angle of total acceleration with radius for car on circular track
- the_storm
- · Replies 5 ·
[Multiple Choice] wavelength of an object. de Broglie wavelength
- daNAV1GATOR
- · Replies 11 ·
Sliding egg I think the books wrong, could someone please verify?
- Beamsbox
- · Replies 5 ·
Determine the weight by using force
- mandy9008
- · Replies 2 ·
Thrust on tilted cube tank face with water and oil layers
- Maybe_Memorie
- · Replies 3 ·
Ski Jump Problem: Verify if Tangent is <20º
- GriffinHeart
- · Replies 2 ·
Solve % Error in Specific Heat Capacity: Eh = mcΔT
- spoony33
- · Replies 1 ·