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.
Finding the Velocity of a Projectile knowing only Launch Angle and Flight Time
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Flux Through a Gaussian Surface
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What is the relationship between a rocket and Inverted Pendulum?
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Oscillating spring experiment uncertainty
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How Are Velocity and Angle Calculated When Crossing a River?
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Applying D'Alembert's principle to a bead on an elliptical hoop
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Electromagnetics: find D,E,P between two parallel conducting plates
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Magnetic energy inside a coaxial cable
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2 Carts on a Track Compressed by a Spring -- What are their Velocities?
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Calculate the charge to mass ratio in this mass spectrometer problem
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The body slides off an inclined plane
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Understanding the Net Force on a Snorkeler's Eardrum
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Spring launches a block up a ramp -- How far does it go?
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Rocket problem -- separated fuel tank in free fall
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Lorentz Velocity Addition Problem
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University Physics: Force Problem (Baseball and Pitcher)
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Degrees of freedom of "simple bicycle"
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Friction - problem with one of the equilibrium equations
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Writing an expression for work done by frictional force
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Egg tossing crime -- From what location was the egg thrown?
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Motion of box on inclined plane connected by spring to a wall
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Lens with different refraction index on each side
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Finding Angular Velocity in Rotational Motion Problems
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How to Estimate the Fermi Energy for Potassium Metal?
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How Does the Angle Theta Affect the Velocity Calculation in String Problems?
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How Do You Properly Approximate Terms in an Equation?
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What Current Flows in a Coil at 230V, 50Hz?
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Conservation of momentum in an oblique launch and projectile explosion
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Determine the moment of inertia of a bar and disk assembly
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Solving Math Problem: Why is m=2, not 1?
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Falling Tower Problem: Watch How to Solve It in This Video
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How Does Using ##m## Instead of ##M = 2m## Affect the Seesaw and Spring System?
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Explaining 2.2 x 10⁻⁶ m Range Calculation
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Jumping from a moving wagon momentum problem -- find Buffy's weight
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Freely hinged rods on a table - Linear velocities of CM after the impulse
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Rectilineal movement of particle
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Phase shift between voltage and current
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Moment of Inertia of a sphere about an axis
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Probability a particle is in a certain region
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2 * 10 ^ 20 charges move in a wire when we connect a 3.7 V battery. Ho
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A copper wire contains 3.0 *10 ^ 22 number of charges on 1 meter wire
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Stewart-Tolman Effect (Current caused by Acceleration of wires)
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Graphs of s, v and a for a mass with a piece of paper attached
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Maximizing Profit in Online Business
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Net Force Produced By Currents In Wire And Square Loop
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Question on Moment of Inertia Tensor of a Rotating Rigid Body
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Young's double-slit experiment - Bright fringes occurring
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Calculating the Effects of Lens Closeness on Light Refraction
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Doppler question - find the observed frequency
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Integration to calculate centre of mass
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Confused about a Result (Circuit Analysis)
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Rolling pendulum angular acceleration
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Calculating distance to balance see-saw
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How can I use the formula k=4pi^2m/T^2 to find the mass of a bolt?
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How is a system in equilibrium when net force and net work are both zero?
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How Long Does It Take for a Mass to Freeze or Melt?
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Harmonic motion - Find the Mass held between two Springs
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Dampening force - find decrease in amplitude
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Determine time after which 4 persons meet in given scenario
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Help me revise (basic electronic circuits questions)
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Inferring Shape of Phasors in Multi-Slit Diffraction
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Calculating Tidal Range (Gravitation)
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Calculation of the field due to a dipole at an arbitrary point
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Understanding Wavelengths and Fringes
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Compton Scattering - Find x component of electron momentum
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Experimental Analysis: Forced Harmonic Motion and Resonance
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Was the Car at Fault Speeding in the Notre-Dame Street Accident?
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A weight is suspended from a spring and oscillates between positions A and B
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Calculating Rotation Rate from Change of Angle
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Combination of thin lens and concave mirror
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Grade 12 Physics problem -- A small bungee cord powered catapult
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Compton Scattering - determine momentum
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Intuition on Newton's Spinning Bucket
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Tension in rope for non-uniform circular motion with air resistance
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Thermodynamics: Internal Energy, Heat and Work Problem
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Create a Phasor Diagram for Steady State Circuits
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Why Does a Sphere Reach Terminal Velocity if Buoyant Force Exceeds Weight?
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How do you read the Brewster angle formula / equation?
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Standing waves (graphing) homework question
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What is the energy conservation principle in a two masses and pulley problem?
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Ohm's Law graphing inversed gradient value
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The effect of temperature on phosphorescence
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Finding the Magnetic Field (B_0) on a Graph [NMR]
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Finding the Relative Uncertainty for the Standard Error of the Mean
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International Physicists' Tournament 2020: Electrostatic Copier
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Body thrown at an angle to the horizontal
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Show the number of arrangements that give an overall length of L = 2md
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Why is Fty positive in the Σtorque equation?
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Why do we not need to convert from degrees Celsius to Kelvin?
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Current flow in a semiconductor circuit
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Confusion about the difference between isolated and non isolated systems
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Can heat flow into a body without increasing the mean kinetic energy?
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Problem with independent events in possibilities
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Waves - General question about Damping and how it affects a propagating wave
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Waves -- How does increasing tension affect frequency and period?
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Calculating Numerical Uncertainties in an Equation
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Motion of a particle in a magnetic field
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Pulling a sled across snow with a rope at an angle
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Background radiation sources question
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Forces on particle in complex motion relative to ground observer
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