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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Releasing a rod tied to a string which was held at an angle
- FreezingFire
- · Replies 3 ·
Proof that disk of charge = point charge when very far?
- Brennen berkley
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Mass moving back and forth at the bottom of a circle (Polar)
- Potatochip911
- · Replies 3 ·
Formula of object immersed in water
- werson tan
- · Replies 3 ·
Final velocity of proton after being repelled?
- Brennen berkley
- · Replies 10 ·
SNR calculation for X-ray detector with quantum noise
- BobP
- · Replies 1 ·
Momentum and push starting vehicles
- MBBphys
- · Replies 1 ·
Density of body and density of liquid
- werson tan
- · Replies 1 ·
Find dialectric constant in a capacitator
- romakarol
- · Replies 12 ·
Understanding Capacitance and Impedance in Series Circuits
- vetgirl1990
- · Replies 2 ·
Kinematic viscosity depends on pressure
- werson tan
- · Replies 3 ·
Coloumbs law question (checking answer)
- romakarol
- · Replies 1 ·
Archived Did I make the velocity vs time graph correctly?
- ziltoid
- · Replies 2 ·
What is the final pressure in the balloons after being disconnected?
- gruba
- · Replies 5 ·
Archived How to include resistance of wire and voltmeter in Kirchhoff equations
- jey1234
- · Replies 1 ·
The approximate orientation of an electric field
- Physicaa
- · Replies 3 ·
Archived Therefore the voltage needs to drop by 42V for the light bulb to be 40 watts.
- Jarfi
- · Replies 1 ·
Archived Pebble flying out of tire when static friction limit is exceeded
- lila.haj
- · Replies 1 ·
Hamiltonian and first order perturbation
- gasar8
- · Replies 15 ·
Restoring Moment: Anti-Clockwise Direction?
- werson tan
- · Replies 2 ·
Reduction of a simple distributed loading (correct1)
- Pascal1p
- · Replies 7 ·
Angular frequency of plank attached to spring
- vetgirl1990
- · Replies 1 ·
Doppler effect guitar string fundamental vs second harmonic
- vetgirl1990
- · Replies 2 ·
Finding amplitude from simple harmonic equation function
- vetgirl1990
- · Replies 8 ·
Ball bounce angle on inclined surface
- Faris Shajahan
- · Replies 5 ·
Understanding Forces on Submerged Surfaces
- werson tan
- · Replies 2 ·
Initial velocity and time of motion through water
- gruba
- · Replies 2 ·
Reduction of a simple distributed loading
- Pascal1p
- · Replies 4 ·
Magnitude of velocity and acceleration
- JustDerek
- · Replies 40 ·
Curvature effect can be neglected
- werson tan
- · Replies 10 ·
Ratio of Forces by from Tennis Serve?
- ztak07
- · Replies 2 ·
Focal length of diffraction grating for recip. dispersion
- magnesium12
- · Replies 3 ·
Understanding the Reflection of Light: Ray Optics and Concave Mirrors
- Docscientist
- · Replies 2 ·
How Many coulombs pass through each resistor in a circuit?
- Precut
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What is the formula for the weight of a fluid block?
- werson tan
- · Replies 1 ·
Finding battery internal resistance from terminal voltage measurements
- hey123a
- · Replies 11 ·
Frequency of Vibration of a water tank
- CGI
- · Replies 10 ·
Vector Kinematics Bonus Question
- Asleky
- · Replies 3 ·
Why does integrating pressure over area give volume?
- werson tan
- · Replies 3 ·
Relationship between temperature and wavelength?
- SpicyWassabi101
- · Replies 1 ·
Current required to lift a wire in a magnetic field
- uibble
- · Replies 3 ·
2 neutral objects produce a charge, how many electrons added?
- romakarol
- · Replies 1 ·
Find Dielectric Constant from Parallel Plate Capacitor Problem
- JordanHood
- · Replies 1 ·
Heat Cycles, Work, and Efficiency
- Marcin H
- · Replies 4 ·
Calculating the height of a geostationary satellite of Earth
- kokodile
- · Replies 12 ·
Viscosity Formula: Why Not (mass x length)/(time x area)?
- werson tan
- · Replies 4 ·
Supporting Fluid: Reducing Shear Stress with Wall
- werson tan
- · Replies 2 ·
What are the key forces and impulse affecting a basketball's bounce?
- Michael1974
- · Replies 4 ·
Which diode will turn on in this circuit?
- Marcin H
- · Replies 21 ·
Calculating Charge on a Capacitor in a Circuit with a Switch
- Gillian
- · Replies 1 ·
Finding the value of g using 2nd Harmonic Frequency
- hiver
- · Replies 3 ·
Solve Physics Echo Problem: Air Echo Returns 1.33s Later
- SpicyWassabi101
- · Replies 3 ·
Crab Nebula Age Estimation - Angular Position Problem
- JoAstro
- · Replies 5 ·
Force needed for Van de Graaff motor to collect 5 coulombs
- mattbeatlefreak
- · Replies 7 ·
Archived How Does Shaft Diameter Affect Power Transmission and Torque?
- MMCS
- · Replies 2 ·
Need help with research on celestial body dynamics
- AymenF
- · Replies 4 ·
Pulling yourself up with a pulley
- brycenrg
- · Replies 9 ·
Travelling wave: finding the velocity from displacement
- kamhogo
- · Replies 3 ·
Find the rms electric field strength of a given EM wave
- henrco
- · Replies 2 ·
Electric current passing through closed loop
- Frank-95
- · Replies 1 ·
Finding charge on capacitors with 12V battery and four capacitors
- waitforit
- · Replies 1 ·
Small mass (m) resting on a larger slanted mass (M)
- TroyP
- · Replies 11 ·
A window washer pulls herself upward using the bucket-pulley
- Anant Joshi
- · Replies 1 ·
UROV max velocity and drag force with 2 forward thrusters
- chrispet
- · Replies 1 ·
Solving for Acceleration in a Complex Pulley System
- TheLil'Turkey
- · Replies 4 ·
Spring compression of a bowling ball
- reminiscent
- · Replies 6 ·
Archived Time for a trampoline jumper to lift off?
- lukasleibfried
- · Replies 1 ·
Finding Minimum Plate Separation for Mica-Filled Capacitor
- mattbeatlefreak
- · Replies 6 ·
Two-Block Dynamics Problem: Determining Acceleration and Tension
- whitejac
- · Replies 2 ·
Calculating Work Done in Inflating a Square Balloon
- enc08
- · Replies 5 ·
Archived Hanging a sign Torque and summation of forces
- Jbreezy
- · Replies 1 ·
How Much Energy Does a Squash Ball Lose After Bouncing?
- Araiz
- · Replies 3 ·
How to calculate slit separation?
- ipodmypod300
- · Replies 2 ·
Working out force from distance object is displace (2D)
- fixty
- · Replies 1 ·
Swinging, equilibrium, kinetic energy problem
- slymme
- · Replies 2 ·
Equilibrium and Pressure Distribution in a Spherical Body Under Gravity
- erisedk
- · Replies 5 ·
Haloes or rings round the moon?
- Anithadhruvbud
- · Replies 7 ·
Differences between dispersion and scattering?
- Anithadhruvbud
- · Replies 2 ·
Calculating Radioactive Decay with Simultaneous Particle Emission
- erisedk
- · Replies 5 ·
What's the nature of a force acting on this gas? (Thermo)
- Raynor49
- · Replies 1 ·
Bullet hitting duck at 50 m with work-energy theorem
- reminiscent
- · Replies 9 ·
How do i find gravity given a radius and an altitude?
- gcombina
- · Replies 3 ·
Work-Energy Theorem problem
- jackthehat
- · Replies 5 ·
Negative and Positive E-Field Components
- Drakkith
- · Replies 3 ·
How Far Will a Block Slide on an Incline with Friction?
- df102015
- · Replies 2 ·
Find Frictional Torque for Poorly Maintained Bicycle
- kenway
- · Replies 6 ·
Distance from geostationary orbit to the moon
- dakota224
- · Replies 17 ·
Radioactive decays - given power value
- mahoteacher
- · Replies 5 ·
Calc Vol of 1 Mol Steam @ 100°C, 1 atm: Ideal Gas Eqn
- max1995
- · Replies 3 ·
Calculate total mechanical energy of a frictionless spring
- henrco
- · Replies 5 ·
Finding acceleration from distance and time
- ajd2000
- · Replies 2 ·
Comparing horizontal ranges at 45° and 30° angles
- Yoruichi
- · Replies 3 ·
Energy and charged particle collisions
- krbs
- · Replies 4 ·
Archived Calculating Back EMF of an Automobile Starter Motor
- Augustus
- · Replies 1 ·
Finding original frequency of tuning fork B from beat frequency data
- SpicyWassabi101
- · Replies 6 ·
Archived Finding effective capacitance between two points in a circuit
- nishantve1
- · Replies 7 ·
How Long Will It Take to Travel 65 Light-Years at Relativistic Speeds?
- persephoneia
- · Replies 3 ·
Magnitude of electric field/Need answer checked
- WestTXcollegekid
- · Replies 1 ·
Archived Projectile motion: finding displacement and velocity angle, and comparing ranges
- shaunamariexx
- · Replies 2 ·
Closest approach of protons at T = 10^7 K
- PAK108
- · Replies 13 ·