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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What is the net electric force exerted on the point charge q1?
- Physicsnoob90
- · Replies 10 ·
Finding Resistance in RC Circuit
- Matt21
- · Replies 1 ·
Calculating the force for a differential pulley
- albertrichardf
- · Replies 20 ·
Solving Boat Speed & Distance with Drag Force
- Macykc2
- · Replies 3 ·
Dipole moment, electric potential
- Cocoleia
- · Replies 17 ·
Question Involving Conservation of Momentum
- Jay520
- · Replies 4 ·
Two pulleys and two masses on a slope
- vinamas
- · Replies 2 ·
How Do You Derive the Period of a Pendulum with Arbitrary Amplitude?
- StrangelyQuarky
- · Replies 1 ·
Centrifugal force on water in a glass
- srecko97
- · Replies 13 ·
Figuring heat exchanger's surface temp
- TuomasO
- · Replies 1 ·
What is the missing variable in the double slit interference pattern?
- CricK0es
- · Replies 1 ·
How Is Tension Calculated in a Two-Object System with Static Friction?
- MrNation
- · Replies 1 ·
Calculating P for an Aircraft Flying in a Circular Motion
- QuantumNite
- · Replies 9 ·
How Far Will a Puck Slide with Friction?
- Anuj Agarwal
- · Replies 3 ·
What is the Normal Force on an Incline Plane with Two Connected Blocks?
- Alex126
- · Replies 3 ·
Can't understand the question of a sound problem.
- kadesh
- · Replies 10 ·
Charge on Cylinder Shell: Q1 + Q2
- RoyalFlush100
- · Replies 1 ·
What Happens to Double Slit Diffraction in a Ripple Tank?
- Arget
- · Replies 3 ·
Velocity and position of the boat
- Yovanna
- · Replies 2 ·
How can a pi_0 meson decay into 2 photons?
- Blue_Angel
- · Replies 1 ·
Relativistic kinetic energy and momentum
- Cocoleia
- · Replies 8 ·
Calculating Angular Speed of Rotating Apparatus with Attached Mass and Rod
- JiggaMan
- · Replies 1 ·
Solve for Angle in 2D Projectile Motion Problem | Neglecting Air Resistance
- Georgeme_01
- · Replies 13 ·
What is the energy of the electron just before it hits
- paulfr
- · Replies 1 ·
Putting rotating cylinder on the ground
- srecko97
- · Replies 3 ·
Calculating the Component of the weight that acts along a line
- JudgeA
- · Replies 8 ·
Parallel Disk Capacitor E field
- PhysKid45
- · Replies 8 ·
Given Two Point Charges, Find the charge at Point 0 as x,y
- vr0nvr0n
- · Replies 3 ·
A problem about momentum and energy,
- garylau
- · Replies 7 ·
Work Rate of Force on Block of 102 kg at 5.5 m/s
- Arman777
- · Replies 2 ·
Am I doing this right? (Physics, Newtons, Diagrams)
- barroncutter
- · Replies 8 ·
Incorrect Physics in Furious 7 Car Tower Scene
- jessle
- · Replies 15 ·
Electrostatics: Charging a sphere by induction
- harini07
- · Replies 4 ·
Calculating Angular Velocity of Disk w/ Angular Momentum
- srecko97
- · Replies 1 ·
Confusion about how KCL and KVL are used for diode circuits
- timnswede
- · Replies 3 ·
Constant acceleration of baseball problem
- iPhotonHQ
- · Replies 3 ·
Electric Forces and net electric force?
- jlmccart03
- · Replies 7 ·
Stone launched upward - Kinematics question
- EinsteinApple
- · Replies 11 ·
Confusion regarding significant figures in answers
- fleetingmoment
- · Replies 4 ·
Line charge within a charged shell (basket case)
- hashbrowns808
- · Replies 6 ·
Mixing Light Colors: Is There a Theory?
- martinbandung
- · Replies 1 ·
Where to Stand in a Water Tank Experiment to Experience Minimal Wave Action?
- hamza2095
- · Replies 3 ·
Ball thrown up a π/6 inclined plane: time in air and launch angle for normal impact
- danyull
- · Replies 7 ·
1-D Projectile Motion: Throwing a Rock
- Jarvis88
- · Replies 5 ·
Bernoulli Equation and Velocities
- XanMan
- · Replies 9 ·
Electrostatic Potential / Work Question?
- lightofthemoon
- · Replies 3 ·
Calculate area of PV diagram. Two isotherms, two isobars
- llatosz
- · Replies 6 ·
Solving a Tricky Physics Pulley Problem: Finding M2 with Tension and Mass M1
- soolights
- · Replies 37 ·
Difference in flight time for two planes with different velocity profiles
- novae
- · Replies 2 ·
Find the electric field on a proton by an electron
- jlmccart03
- · Replies 15 ·
I have a diffcult question about torque -- me
- garylau
- · Replies 10 ·
Standing Waves On Strings: Harmonic and Frequency Problem
- K_Physics
- · Replies 2 ·
Getting the init. velocity given G-force?
- MartinSa
- · Replies 1 ·
How Can You Maximize Gain in Ideal Op-Amps?
- Cocoleia
- · Replies 22 ·
Need help on Newton's Law Question and Determining speed
- richvrd1
- · Replies 1 ·
Motion of a particle in eletric field
- Taylor_1989
- · Replies 9 ·
Find the electric field at x and y coordinates?
- jlmccart03
- · Replies 13 ·
Weight after sliding off a ramp
- Arquon
- · Replies 16 ·
How to calculate the gravity on a hill?
- caspeerrr
- · Replies 4 ·
Splitting reaction into horizontal and vertical components
- green-beans
- · Replies 6 ·
Father and Son Racing Kinetic Energy
- Arman777
- · Replies 4 ·
How to calculate the mass of a ball based on a video
- Sirbastian
- · Replies 17 ·
Archived 'Kinematics - Vector Derivative' Exercise
- portuguese
- · Replies 2 ·
Electric field at centre of hollow half sphere
- Cocoleia
- · Replies 3 ·
What is the effect of slope on velocity?
- denzel
- · Replies 7 ·
Calculating Bragg Angles for X-Ray Scattering from Table Salt Crystal
- transmini
- · Replies 3 ·
What are the effects of changing the speed of alternator?
- srinaath
- · Replies 1 ·
Static equilibrium; pulley and inclined plane problem.
- J-dizzal
- · Replies 12 ·
Find the current and Voltage of the following pieces
- itzernie
- · Replies 23 ·
Harmonic Oscillator- Is this correct?
- kubaanglin
- · Replies 1 ·
Damping Constant: Solving for b Homework
- Tylerladiesman217
- · Replies 5 ·
Potential energy of a displaced mass on a spring
- AsadaShino92
- · Replies 3 ·
Minimum force to prevent smaller block from slipping on larger block
- Arman777
- · Replies 34 ·
Does Earth's Rotation Affect Gravity?
- Clubbes
- · Replies 2 ·
Drag Force Ratio: Jet vs Transport at 1200 km/h, 15 km Altitude
- Arman777
- · Replies 6 ·
Relativity: Time dilation and distance calculations
- WWCY
- · Replies 9 ·
Elastic collision between pool balls
- John004
- · Replies 7 ·
Moment of inertia of a rigid body
- doktorwho
- · Replies 9 ·
Find the position of equlibrium
- doktorwho
- · Replies 4 ·
Calculating Radiation Power of a Ball at 10000K in the Range of 400nm-800nm
- kubajed
- · Replies 8 ·
Normal Force between two concentric cylinders
- Joshua Smith
- · Replies 10 ·
Is Vb 0V in this Op-Amp circuit?
- Cocoleia
- · Replies 9 ·
Analysis with Opamps: Find Gain & Solve for Unknowns
- Cocoleia
- · Replies 1 ·
Diodes & Rectifiers: Homework Solutions
- Cocoleia
- · Replies 15 ·
Frictionless body on Earth's Surface
- DBirk
- · Replies 3 ·
Calculating Acceleration on an Inclined Plane with Friction | Two Block System
- Arman777
- · Replies 18 ·
Rate at which Sun converts mass to radiation
- BRN
- · Replies 14 ·
Classical Mechanics - Find angular velocity of two rods
- Mikkel
- · Replies 5 ·
Acceleration of a Ball Rolling in a Funnel
- QQB
- · Replies 9 ·
Electric field at the center of a hemisphere
- DoubleE7
- · Replies 1 ·
Friction Force and Decelerating Boat
- Arman777
- · Replies 3 ·
A 1 500kg satellite is in orbit 250km above earth's surface.
- jakeginobi
- · Replies 14 ·
Reducing all circuit resistors to only parallel and series?
- solour
- · Replies 2 ·
Average Coefficient of Kinetic Friction between Ice and Puck
- K Wils
- · Replies 3 ·
Calculate Work (w) for Isothermal Gas Expansion/Compression
- IoFawkes
- · Replies 4 ·
How Is Rocket Speed and Height Calculated Under Varying Thrust and Mass?
- John004
- · Replies 13 ·
How Many Basic States Exist for Particles in Divided Spaces?
- Galactium
- · Replies 3 ·
Help understanding torques and moments
- doktorwho
- · Replies 4 ·
Calculate the Kinetic Frictional Force
- SRooney
- · Replies 1 ·
Practical Physics: Discharging a capacitor
- Taniaz
- · Replies 14 ·