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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Velocity - String(Pulley) constraints
- phoenixXL
- · Replies 13 ·
Magnetic moment of singly ionized helium
- Emspak
- · Replies 4 ·
Acceleration on a pulley system with 3 blocks
- mackeis
- · Replies 3 ·
Magnetic Field of a point charge
- majormaaz
- · Replies 1 ·
Solve RLC Circuit Problem: Half Power at Resonance
- Saitama
- · Replies 2 ·
Equivalent resistance, using node voltage analysis
- yaro99
- · Replies 11 ·
Direction of Electric Field in a Changing Magnetic Field
- Queequeg
- · Replies 2 ·
Thin Lens Equation: Nearsighted
- blue_lilly
- · Replies 1 ·
Show that the two wave functions are eigenfunction
- gfxroad
- · Replies 1 ·
Why is the answer C for electric field and potential?
- delsoo
- · Replies 4 ·
Deriving work-energy theorem from Newton's second law
- negation
- · Replies 4 ·
How much work is done on the ice block?
- Richober
- · Replies 1 ·
Speed of satellite in geosynchronous orbit
- glennib
- · Replies 2 ·
Can a 23 keV electron produce both Kα and L X-rays in silver?
- utkarshakash
- · Replies 5 ·
Understanding Work: Kinetic vs. Potential Energy
- dragon-kazooie
- · Replies 31 ·
Magnetic field calculation. Method of Images/superimposition.
- binbagsss
- · Replies 1 ·
Charge produced at end of an insulator rod using electric induction
- AakashPandita
- · Replies 2 ·
How Does the Quantum Operator \(\hat{p}^2\) Derive from \(\hat{p}\)?
- N00813
- · Replies 2 ·
Space elevator problem: how long is the cable?
- raving_lunatic
- · Replies 1 ·
How Does Thrust Affect the Calculation of Coefficient of Drag?
- 462chevelle
- · Replies 6 ·
How can the energy of an orbit determine the size of its semimajor axis?
- Tanya Sharma
- · Replies 15 ·
Essay assignment on the concept of time
- sappho.poiesis
- · Replies 13 ·
How Long Would Earth Take to Collide with the Sun if It Stopped Rotating?
- amind
- · Replies 25 ·
Calculating Decay Constant and Amount of Thorium Plated
- P1nkButt3rflys
- · Replies 9 ·
Intensity of a sound wave problem
- Chase11
- · Replies 3 ·
What Parachute Size Ensures a Safe Ambulance Airdrop?
- sirvantehs
- · Replies 7 ·
Induced EMF in a rectangular loop with changing magnetic flux
- liamporter1702
- · Replies 8 ·
A pulley system with two objects stacked on each other
- Ace.
- · Replies 9 ·
Why is angular momentum conserved but not linear momentum in a collision with a pivot?
- student34
- · Replies 6 ·
Finding the tension of the string (vertical circular motion)
- littlebearrrr
- · Replies 5 ·
Why does ignoring one side of a capacitor plate give the right field?
- physiks
- · Replies 8 ·
Momentum and kinetic energy in collisions with a bullet
- jdawg
- · Replies 11 ·
Quick EMF question - Spherical Shell- North/South Pole, Equator
- binbagsss
- · Replies 13 ·
Different types of energy: kinetic vs potential vs
- csurfus1
- · Replies 4 ·
Electric field strength at the center of semicircle
- need_aca_help
- · Replies 4 ·
How Does Depth Affect the Buoyant Force on a Submerged Beach Ball?
- whattheheckV
- · Replies 3 ·
Gravitation Problem- Sun and Earth
- Quotexon
- · Replies 9 ·
Bullet fired toward Earth from orbiting satellite
- Tanya Sharma
- · Replies 7 ·
What is the electric field at q due to 4 charges in a square configuration?
- Scarth
- · Replies 1 ·
Electric Field strength between 3 charges and directions
- need_aca_help
- · Replies 5 ·
Making a solenoid from 1.0m of wire. missing information?
- neemer
- · Replies 4 ·
Initial Energy/Final energy on 2 capacitors
- MarcL
- · Replies 1 ·
Electric field strength of 4 charges positioned in a square shape
- need_aca_help
- · Replies 7 ·
Distance traveled by projectile
- tristan401
- · Replies 9 ·
Energy problem involving a projectile (tricky)
- delsaber8
- · Replies 30 ·
Angular Momentum problem, Swinging door
- sreya
- · Replies 1 ·
How much does a bullet penetrate a wall?
- CPShock
- · Replies 2 ·
Solving circuits with superposition (2 problems)
- Rellek
- · Replies 3 ·
Statics - finding a moment of a force in xyz plane
- yugeci
- · Replies 4 ·
Verifying That Diamond Is More Stable At Certain Conditions
- Bashyboy
- · Replies 6 ·
Center of Mass for a cubical box with a missing top
- jdawg
- · Replies 2 ·
Transfer function of this simple circuit
- Screwdriver
- · Replies 2 ·
Mass sliding off a rotating disk with angular acceleration
- sksmith6471
- · Replies 10 ·
Finding resistane and current non-ohmic
- Eagle's Wings
- · Replies 3 ·
Electrical force between charges
- Latsabb
- · Replies 3 ·
Buoyancy - block of concrete is being raised from a lake
- KiNGGeexD
- · Replies 68 ·
Interatomic potential and binding energy system of equations
- KiNGGeexD
- · Replies 19 ·
Find Mass of Object 2 in Two-Mass Pulley System
- Fresh Coffee
- · Replies 19 ·
2 people throwing balls at each other on cart - cons. of momentum
- DoctorWho726
- · Replies 9 ·
How to Write Mathematical Equations on Physics Forums
- csurfus1
- · Replies 5 ·
A satellite will crash into the Earth if its velocity:
- csurfus1
- · Replies 1 ·
The acceleration due to gravity on the surface of the Earth is:
- csurfus1
- · Replies 2 ·
Are these circuit diagrams equivalent?
- pwi_rk14
- · Replies 5 ·
Convertion of energy through photosynthesis
- csurfus1
- · Replies 1 ·
TNT explosive is what type of energy?
- csurfus1
- · Replies 3 ·
Electric field a spherical surface
- baby_1
- · Replies 4 ·
What is the object with the most momentum?
- csurfus1
- · Replies 1 ·
Faraday Lenz lab - My calculations are Way off and I'm not sure why
- uterii
- · Replies 3 ·
What is the effect of decreasing the widths of slits in double slit experiment?
- nicolauslamsiu
- · Replies 4 ·
Problem with diffraction equations (diffraction and astrophysics)
- IQScience
- · Replies 1 ·
How Do You Calculate the Net Torque on a Square Plate?
- sreya
- · Replies 5 ·
Baseball bat collision impulse and force calculation
- kahunah
- · Replies 13 ·
Finding radius of sphere with six times the mass
- need_aca_help
- · Replies 4 ·
How High Can Electrical Potential Get Near Large Charges?
- Latsabb
- · Replies 3 ·
Solving for θ in a Parabolic Orbit
- pelmel92
- · Replies 1 ·
How do I draw a displacement-distance graph for waves?
- LXX
- · Replies 3 ·
Checking my reasoning on deriving fine sructure constant alpha
- Emspak
- · Replies 6 ·
How Is Acceleration Calculated in a Pulley System with Unequal Masses?
- Dumbledore211
- · Replies 39 ·
Projectile motion and friction problem
- Todd0012
- · Replies 1 ·
Understanding Hydrogen Fine Structure Validity and Field Discrepancies
- bobie
- · Replies 14 ·
How Do I Solve the Equation 117.72 = 100sin2x + 28cosx for x?
- Todd0012
- · Replies 4 ·
How do you measure static force without considering acceleration and velocity?
- Todd0012
- · Replies 2 ·
Finding Highest Energy for Fermions and Bosons in a Box
- baubletop
- · Replies 5 ·
Finding harmonics of a banjo string
- bt1740
- · Replies 1 ·
What is the Tension in a Two Pulley System?
- pinokicake
- · Replies 2 ·
Do two braking cars collide if 45m apart?
- Todd0012
- · Replies 1 ·
How to Find the Electric Field Inside a Partially Hollow Charged Sphere?
- 886363
- · Replies 12 ·
Phase constant for reflected waves on a string
- NATURE.M
- · Replies 3 ·
Radio Antennas and Young's Double slit
- STJ
- · Replies 8 ·
How do I find the current through each resistor using Kirchoff's laws?
- darksyesider
- · Replies 8 ·
Projectile Motion Ball Hurl Question
- yoyo16
- · Replies 4 ·
What is the Electric Field on a Metallic Surface in an Electrostatic Field?
- Sixty3
- · Replies 5 ·
Projectile Motion Jump Question
- yoyo16
- · Replies 10 ·
Kleppner - Block on wedge with friction
- jbunniii
- · Replies 14 ·
Expression for current through loop as a function of time
- kez
- · Replies 4 ·
What is the Mass of the Stone and Tension in the Wire?
- sreya
- · Replies 4 ·
Time Dependent Current in a Wire
- trolling
- · Replies 1 ·
Tensor of inertia - hollow cube.
- peripatein
- · Replies 1 ·
Finding current and charge in a RC circuit.
- U.Renko
- · Replies 6 ·
Calculating Torque and Frequency of a Polar Molecule
- besnik93
- · Replies 4 ·