Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
How to Calculate Electric Field at a Point for Physics 12 Electromagnetism?
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Calc EMF: Find ε & R in Circuit w/ 3.4 A & 6 V
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How do I know that I should do a vector addition for this?
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Frequency spectrum in Doppler effect
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Physics 12 Electric Energy Question
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Calculating Displacement, Velocity, and Acceleration of a Harmonic Wave Train
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Momentum, Impulse, Area under curve
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What Is Archimedes' Principle?
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Electric Charge Applied on Two Wires of Electroscope?
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Kirchhoff's 2nd Law: Terminal PD Calculation Homework
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The position of a point in 2 rotations with 2 axes
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Boulder rolling off of cliff: will it hit the village?
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A train travels between two stations
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MC (multiple choice) question about total internal reflection
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How Do You Determine George's Direction Relative to John in a Strawberry Field?
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Racing Car's Avg Speed: Find the Answer!
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Kinematics in one direction - relative velocity word problem
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Football Trajectory: Radius & Speed Rate of Change
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Confusion regarding cos or sin
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Final temperature of ice mixed with water
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What does "vertical plane" mean in physics?
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Nitrogen in a cylinder - temperature, work and volume
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How is Density Related to Depth in the Ocean?
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Significant figures vs precision (I think)
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Physics magnitude and direction?
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Need help with physics experiment (Speed of sound)
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Using vectors as a function of time
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Atwood Machine, deriving equation for acceleration
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How long does it take to reach the ground?
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Finding dot product, cross, and angle between 2 vectors
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What is the Missing Piece in Solving for ρ in this Simple Problem?
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Find the Speed of an Electron in the lab frame
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Calculating Torque on a Dam Due to Water
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Collision Experiment: Momentum, Impulse and Conclusions
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Finding voltage across a resistor in a circuit
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Calculating Momentum Change in Car-Plastic Collision
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Need some explanation for this physics answer (E-field due to charges)
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Doubts on angular momentum [master's degree exam]
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Change in medium and its effect on sound
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Electric force-finding coordinate
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Physics Experiment Help (Torque, Angular Momentum, etc)
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Calculating Efficiency and Work in Otto Cycle Engine
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Kinematics 1-D Problem. Stuck on specific parts.
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[mechanics] radius of a sphere with critical mass
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Mass changed if q is produced by adding to electrons mass
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Convert m/s to N? Chart Vectors Graphically
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Apparent vs. actual speed for moving star
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Using Gauss' law for spherical charge distribution
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Calculate flux from a radiating disk
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Conclude Collision Experiment: Car Mass & K.E.
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Solving Homework: Find Final State, Mass, Work & P-v Diagram
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Help with max rocket height. Heights differ with methods.
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Yes, your solutions for both parts (a) and (b) are correct. Good job!
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What is the optimal shape of a membrane on a rectangle under pressure?
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What are the thermodynamic properties and efficiency of a steam plant?
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Question on Statics -- San Francisco Bay Bridge Bolts
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How to extract information from question given that u=0
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Find the equilbrium temperature
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How Can You Find Forces P, F, and T in a Static Equilibrium Problem?
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Conversion from molar mass to mols
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Force given velocity as function of space.
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Special Relativity derivations ....
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First law of thermodynamics applied to a closed system
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How to Find the Capacitance of an Isolated Ball-Shaped Conductor?
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Current and resistance in series and parallel circuits
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Calculating the Age of a Sample Using Carbon-14 Dating
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Calculate Normal Force: Crate & Person on Floor
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Forces acting on two stacked blocks
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Find the buildings height for two balls to land @ same time
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What is the x component of .... ?
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Gravitational potential energy
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How many seconds will it take before the cars meet?
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Electrostatic and gravitational force
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Projectile motion from the ground
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How Far Ahead Should You Monitor for Obstacles When Controlling a Mars Rover?
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Projectile Motion, Find Gravity
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FBD for Newton's Law of Motion Problem
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Different cases of work done done by 3 conservative forces
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Calculating magnitudes of vectors
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I feel like such an idiot (Help please with unit conversions)
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Tension in the string and tangential accleration
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Mechanics Question -- Ball bearing on top of an accelerating car
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Calculating Distance Traveled by a Honking Car and Echo
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What's the energy of a rotating bearing?
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Finding the Point of Zero Electric Field in an Equilateral Triangle of Charges
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Multiple thermodynamics problems
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Solving a Relativistic Rocket Collision
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Projectile Motion -- mountain jumper
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How Does Halving the Magnetic Field Affect Particle Displacement?
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How to solve Rashba and Dresselhaus SOC Hamiltonian
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Finding Angular Velocity & Max Force on Vertical Track
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Calculating Vector Quantity with Given Magnitude and Direction
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Age of Meteorite: Calculating Half-Life
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Kinematics car acceleration question
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Power Calc: Net vs Driving Force
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Problem related to Coloumb's force
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Determine the displacement of the object
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How Does Projectile Motion Affect Speed and Angle on Impact?
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Optics Problem -- possible values for the object distance?
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Calculating Time for Ball to Reach Fence Plane
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