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.
Motion of System in Inertial Frame: Analysis & Constraint Finding
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Using the derivative of the formula of the number of nuclei
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Calculating inductance of an LR and RLC Circuit?
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Finding Time with Acceleration Inital Velocity, Displacement
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Why a cotton wool will not ignite using thermodynamics?
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At what distance x do the waves have a phase difference of ___?
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What is the frequency of the wave?
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What is the magnetic force on the particle
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Understanding Electromagnetic Waves in a Vacuum
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Electric Field Angle at Origin: 209 deg
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How Do You Calculate Primary Current in a Step-Up Transformer?
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Speed of a beryllium nuceleus after acceleration
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Calculate Torque for 8N Forces on 0.6m Beam
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Conservation of Momentum of two trolleys
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Creating a Cloud Chamber for Deflecting Charged Particles
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Estimate flattening of the Earth
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Determain thickness of layers in cylindrical capacitor
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Conservation of Momentum and Collisions
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Formula for the Speed of Ocean Waves
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How Much Liquid Nitrogen is Needed to Freeze Water at 0ºC?
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Temperature-Independent Resistor Combo
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Moment of Inertia of an L-shaped bar
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Finding max acceleration with force at angle incl friction
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Inclined plane with block and cylinder, pulley with mas
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Work required to take object from planet to infinity
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Small question about speed of the ball
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How Do You Solve a Suvat Problem for a Ball Thrown Off a Roof?
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Time to drain water through a pipe
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Find both the internal resistance of a battery and EMF
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Astronaut travels to distant planet, finding age?
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Measuring a Coil of Wire With Ohmmeter and Balance
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How Long Does It Take for a Bowling Ball to Stop Sliding and Start Rolling?
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Ice added to water at 273K, calculate new ice mass
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Front flip of a bike. Conserving Angular Momentum.
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Please help with refraction problem (algebra-based physics)
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Destructive interference Sound question
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Magnetic flux. Dont know where to start
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Why is average velocity called velocity?
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Non-constant Current Density of Magnetic Field
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How Is Current Calculated in a Wheatstone Bridge Setup?
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Simple Conceptual Question Regarding Pascal's Principle
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Two charges located along x. Find all values?
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Solve Tension and Moments Problem: Q4 iii) B)
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Final velocity in SUVAT equations -- ball thrown from a wall
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Resistance and DC circuit question
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Problem 13.33 - Floating gasoline
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How Much Energy is Dissipated in a Resistor in 0.75 Seconds?
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How do I plot the load line for a nonlinear network with an ideal diode?
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A glass marble is dropped down an elevator shaft
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Torque Calculation for Suspended Mass and Cylinder System
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Work required to bring charge from infinity
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Why Does Increasing a Satellite's Altitude Affect Its Total Energy?
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Gravitational Force Problem - Help
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Why Use Angular Acceleration Instead of Radial?
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Satellite orbiting around Earth over equator
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Weight of man on small wedge sliding on larger wedge
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Highschool Level Torque Lab: Can someone check my work?
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Gravitational Potential energy Problem
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How to find acceleration from distance and time?
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Rotational Inertia of a Pulley System
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Relative velocity of accelerating and non accelerating particles
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What is the initial acceleration of mass 5M in an ideal pulley system?
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Calculating View Factors for Three Surfaces Using Reciprocity Relation
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Conical pendulum with two charges
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Finding Torque for Angular Momentum Parking Gate
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Parachute Problem, Figuring out largest load it can hold
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Forces & Friction: Which is Greater?
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First order RC: Find Unknown DC Circuit, given current graph
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Superposition: Find V(t) in complex (AC) circuit
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Momentum: Jumping on a trampoline
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Maximum power of circuit with dependent voltage source
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Which Liquid Exerts the Greatest Pressure at the Base of a Cylinder?
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Q = cm t (raising water temperature -- answer given looks wrong)
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When Does a Projectile's Horizontal Velocity Double Its Vertical Velocity?
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Irreversible adiabatic expansion in which P_ext=0
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Double shear pin for the snow blower
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Maximum extension in spring connecting two masses.
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Find current using KVL (with dependent source)
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How can I determine the properties of a thin lens using basic formulas?
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Velocity Q: 2 Particles Collide in t secs
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Modeling mass-spring-dashpot system
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Sign on change in electric potential energy
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Comparing force of mass at rest vs falling mass
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Amplitude of two carts attached by a spring
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Conservation of Momentum in Explosions
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Electric field within a conductor with a cavity
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Simple Pendulum in Free Fall: Surprising Motion and Video Evidence
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Magnetic Field due to long wire?
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How Was the Equation v=fλ Derived in Wave Physics?
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Conservation of heat on a closed system
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Adiabatical Compression Question
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How do I get acceleration, distance, and time?
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Solving Point Charge Problems: Tips and Help for Electrical Fields
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Applying KVL: Understanding the Process and Confusions
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Understanding Phasors: How to Sketch a Voltage Phasor in Polar Form
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Weight of an Object on another Planet
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DQ/dt=kA(dT/dx) = Heat Transfer. What is Q(t) Solution ?
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Induced current from changing magnetic field
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Thevenin technique solving problem -- getting wrong answer
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Ladder on rough ground against rough wall
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