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 Long Does It Take for a Particle to Travel Through an Earth-Crossing Tunnel?
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Field Goal Projectile Motion Problem: Calculating Angle and Speed for NFL Kicker
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How much energy do we need to vapourize 1 liter of water?
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Calculating Shot Put Release Speed | Projectile Motion Homework Problem
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Finding Total Power, Current & PF in a Circuit
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Two charged spheres are brought into physical contact with each other.
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Finding the magnitude and direction in a electric field.
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Equivalent Electri Force, Find the charge.
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Special relativity relating 3 dimensions
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Electric Potential: Find Distance/Ratio of Charges
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Add 3 Vectors: Magnitude & Angle Calculation
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What Is the Distance Between the Slits in Young's Double Slit Experiment?
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Net electrical flux on a cylindrical Gaussian Surface
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The Terms Potential & Potential Difference
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Calculating path length difference - help
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Question on Simple Harmonic Motion.
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Projectile Motion distance problem
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Calculate evenly distributed force on a beam
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Balloon Thermo/buoyancy question
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Question on aperture and magnitude.
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Stuntwoman Helicopter Drop: Projectile Motion Homework Solution
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Find electric field strength between disks
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Calculating Time for Electron to Slow Down in Electric Field
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Equilibrium of Forces: Finding Magnitude and Direction of Unknown Force P
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Find Initial Velocity from Angle and Horizontal Distance
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Conservation of Angular Momentum bicycle problem
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How Fast Must a Passenger Train Decelerate to Avoid a Crash?
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How Should Angles Be Used in Calculating Tension Forces?
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Another tension force question
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Finding Wind Velocity for a Westward-Bound Airplane
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Calculating Energy and Momentum in Different Frames
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Electric field at the semi-circle's center
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Electrostatics and Coulumb's law, potentials and test charges
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Comparing the Frequencies of the Moon and Earth's Revolution: Which is Greater?
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How Does Changing Plate Distance Affect Interference Patterns in Interferometry?
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How does water rise to form clouds if oxygen is heavier than nitrogen?
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Velocity of cart after seperation
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Thermodynamics (final temperature, ice mixed with steam)
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Momentum on an Inclined Plane: Understanding Conservation and Directionality
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Eliminate T to Show SHM of a Rectangular Plate
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Solid State Physics | electrons | thermal conduction
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How do you find the electric potential from force?
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Determining Beam Diameter in Glass Using Index of Refraction
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Electrostatic potential at a point outside a sphere
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Diodes in parallel with resistors and terminal PD
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Interferometer and Interference.
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Calculating Free-Fall Acceleration on a Strange Planet: Easy Problem 2 Answers"
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Electromagnetic wave equation not invariant under galilean trans.
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When is Electric Potential equal to 0?
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Probability of finding a particle in a box
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Equation check: Dimensional analysis.
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Modifying an equation to plot a straight line.
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Fluid flow through a pipe - Conservation of mass and/or momentum?
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Sliding Ramp and Freefall problem
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Effusion Question about Uranium enrichening
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How does friction work on a smooth slope with rough contacts?
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Prove Period of a Rocking Hemisphere of Radius R is Equal to 4R/3
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Newton's Laws and Force Problem
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Speeding Driver & Cop Car Velocity/Time/Acceleration Q
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How Does a Perturbed Electric Dipole Exhibit Simple Harmonic Motion?
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Finding time period and minimum length of threads
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Is Back EMF Always Equal to Battery EMF in Inductive Circuits?
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Finding Electric Field from Long Filament
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Calculating Tension in Multiple String Systems
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Finding Force of an electron in motion
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Determining Total Impedance: Q&A
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Finding Impedance of RC Series Circuit - Value of R & C
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What is the induced emf in one of the windings?
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Charge on two suspended metal balls
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How do I calculate watts for household appliances?
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Entropy and Black Hole Temperature
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Complex circuits with Kirchoff's law
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Two negatively charged balloons on strings. Find tensions?
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What Voltage Accelerates an Electron Over 0.350 m in 46.0 ns?
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Compton Effect Conceptual Problem
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Momentum in special relativity problem
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Equations of Motion Homework: Acceleration of Block A
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Matrix operations in a general physics problem
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Frequency of circuit with purely real impedance
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Electric field of ring causing oscillation
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Stiffness of a single interatomic spring PLEASE HELP
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Young's Modulus and Interatomic Bond Length PLEASE HELP
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Gravitational Potential Energy Problem
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Question about torque by gravity
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Projectile Motion Analysis: Time in Air Calculation
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Basic Special Relativity (Time Dilation)
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Calculating v from v0, frictional coefficients, and angle
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Block Colliding with a Spring - Help Appreciated
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What Is the Speed of the Ball When Kicked Back in This Soccer Scenario?
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Physics Lab Question - High School
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Problem pertaining to relative velocity and vector components
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Pressure measurement in U tube with mercury and water
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Calculating frictional force on a block with different upward forces
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Conservation of energy minimum speed
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Electric field on surface of earthed conductor
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Calculate the equivalent capacitance in the network
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Calculating Original Speed from Time and Velocity Changes on a Freeway
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Vectors using the component method
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Calculating ln in radioactive decay
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Find Thevenin equivalent circuit
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