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 capacitance, charge, and energy stored changes on a capacitor?
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What is wrong with my linear charge density calculations?
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Angular velocity of a door as a truck accelerates
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Quadratic equation for maximum compression of a spring
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Homework Help Regarding Newton's Theory
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Calculating Torque for Tipping a Block: How Can I Determine the Required Force?
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What EMF is induced in the loop at t=0?
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Two masses coalesce into one body during collision
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Minimum acceleration of a car at which front wheels leave the ground
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Wye-Delta and Series-Parallel Circuit Problem
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Find the resistance to produce a specified potential drop
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Efficient Pump Usage in Fuel Oil Supply System: Solving for Tank Fill Time
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Small sphere in a circular surface
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A train sits on top of a 1% grade incline
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Why is Sn a better conductor than Pb?
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Peak amplitudes of E and H fields (Poynting Vector)
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Please Check Answer -- Arrival times of 2 cars....
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Angular momentum of a rotating skew rod
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How to Linearize Data for Solar System Motion Analysis?
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Conservation of Momentum vs Energy
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How do I calculate voltage drops and currents in a resistor circuit problem?
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Calculating revolutions per minute
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Force on a test charge due to two point charges?
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Need help deriving an expression for dy/dt
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Proving units for angular acceleration
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Potential Necessary for Ionization by Collision
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Solve RC Circuit Problem 1: V=IR, Q=CV
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Please check -- Looking at phone while driving....
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RC Circuit: 20V AC Source, 12V Voltage Across R, What about C?
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With which forces and why spring acts on two bodies
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Find friction coefficient given initial and final velocity
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Find Velocity: Help Solve Ball Problem
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Navigate the Res-Monster Maze: Find R's Current
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I with the formula for this marble falling from a platform
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Will the Tractor and Tesla Avoid a Collision on the Mountain Road?
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How Do You Calculate Total Resistance in Mixed Resistor Circuits?
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How do I convert meters cubed to cubic centimeters?
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Thermodynamic Cycle 2: Understanding PV^y, Cp/Cv and PV=nRT
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Angle between 2 charged spheres hanging from string
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Maximizing and Minimizing Wavelength Contributions in Radiowave Reflection
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Weird question in "Vectors" chapter
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Capacitors charged in parallel
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Thin-Film Interference (2 Wavelengths)
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Moment of Inertia of a Rotating Disk
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Rank the cases from greatest to smallest in order of magnitude
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Potential Difference between two positive point charges
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Maximum distance ahead of trooper reached by red car
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Resistance of 2 materials, different resistivity, combined
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Internal energy of an ideal gas as a function of temperature
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A box slides down a plank, Find its velocity
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Change in a vector upon rotation of the coordinate frame
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Solving the Capacitor Network Problem - Find Ceq = 2C
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Finding Parameters for Simple Harmonic Motion at t=1
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Angle between electric and magnetic field
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How to Calculate when A Roll Back Would Occur on a Ski Lift
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Water Mass in Leaking Container
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Lens & Reflector: Final Idol (Optics)
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Is Substituting q(t) the Correct Method to Verify a Differential Equation?
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Dynamics of a point mass in circular motion
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Electrical Potential Energy and Potential
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What Is the Incorrect Statement About the Dynamics of a Falling Chain?
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Solve F2 Components & Find Magnitudes U & V Axes
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Classical model of diagamanetism
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Moment of inertia changes during rotation—Calculate work?
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A hot air balloon rises at a constant acceleration
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Water level rise in a tank, continuous flow in, high exit
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Find magnitude of car's acceleration
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How do I solve where the absolute potential should be zero?
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Direction of magnetic field due to a toroid
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Find initial velocity and acceleration of a bike
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Thin film interference—find the height of a wedge
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At what height does this plank leave the wall
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When Do I Use Reading Error in Measurement Uncertainty?
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What forces contribute to a runner's forward propulsion?
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What Physics Topics Relate to Ski Lifts?
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Finding magnitude and angle of Fnet (Concept question)
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Deciding the direction of magnetic field of a solenoid
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If a steel ball were to fall, how far away would it land
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How can I represent these resistances on a diagram?
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How Do You Solve These Basic A/L Physics Problems?
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A cube of side L=2 m is made of a cooper cable with 2mm^2
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Rolling Cylinders across a grid of bars
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Final speed of ball : collision with vertical plank at top
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Motion of Charged Particles in Electric Fields
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Rotation w/constant angular acceleration
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Upward Projectile Motion (Which equation do I use?)
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Magnetic Flux through conductor coil
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Probability of the polymer chain
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Electrostatics problem involving a Cone
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Darryl drives his load of tomatoes.... (Velocity vectors pic)
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Calculate the RMS current of an ac circuit
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Finding the speed of rolling ball
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Acc. of a drum joined to another drum with metal tape
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Frequency of oscillation of a rod with two springs
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Magneto-static force and Newton's 3rd Law
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Angular Acceleration of a Rod in an Uneven String Setup
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Final speed when the mass hits the post
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Solving Heat Transfer Problem with Melting Ice Cube
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A positive charge Q is located at the origin....
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Finding angular speed by conservation of angular momentum
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