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 work done by a block
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Proof of angle in path difference formula for two slits
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Mass: Uniting Quarks & Antimatter in Unexpected Ways
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Calculating ΔE Difference for 2 Samples of Monatomic Ideal Gas
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Average distance between asteroids in the asteroid belt
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A (nonconservative) electric field is induced in any region in which...
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Thermal expansion of square from temperature increase of 50K
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Angular acceleration problem for a pulley used to raise an elevator
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How can the direction of propagation help in determining the phase of a wave?
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Rate of loss of potential energy
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Graphing Power vs Polarizer Angle using Intensity
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Power dissipated by a resistor on a coaxial cable
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Calculate the induced EMF of a rotating loop
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Rocket acceleration problem: confused about Newton's 2nd Law
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Question involving clockwise angular movement
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Measured Surface Resistivity Much Higher than Theoretical Value (Why?)
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Question involving angular acceleration of a spinning wheel
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Direction of static friction between a vehicle and circular dome
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Power and Efficiency without mass?
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Vector-Force image and resolve force
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Acceleration & Normal Force of a Box: 4 m/s2 & 418 N
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Vector sample problem -- Force components on a spring mechanism
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Conservation of power in a traveling wave on a string
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Expert Tips: How to Overcome Task Confusion
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Find speed of block using energy and spring equations? Help please
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Compression/Tension in Steel I Beams
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Forces acting on a block that is pushed against a wall
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At what angle must the boat travel so that it moves in a straight line
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Expected value of variance of Hamiltonian in coherent states
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Exploring Periodic Distribution of Rigid Balls in a Vast Space
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Electric Field Inside Cylindrical Capacitor
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Normal Forces on a Sphere in a Non-vertical Groove
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Pressure applied to the ground by a man standing on stilts
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Ray reflecting off intersecting mirrors
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A pulley system with two pulleys and two suspended masses
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Vector problem, magnitude of the force
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Projectile Motion Using Vectors
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Trigonometric Relationship for Light Passing Through a Slab
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Solving Confusions on Pulling a Spool
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Flag orientation for a boat observer Vs a ground observer
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Galactic Dynamic Homework （Problem 2.1 of B&T)
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Simple Addition of Vector Forces on an Eye-Hook
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Question about travelling wave equation
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Electric motor problem -- Power to accelerate a toy train
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How can I troubleshoot and verify my calculations for magnetic force?
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Amplitude of a circular ripple at distance r from source
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How to prove that motion is periodic but not simple harmonic?
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Why does the war-wolf reach its maximum speed at the vertical position?
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Acoustics Question Confusion (Test Q)
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Infinite number of pairs of Force and distance R from AoR
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What kind of wire needed to prevent overheating?
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Energy conservation law question with capacitor
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Finding the work done by Spiderman
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Electric Flux through a semi-spherical bowl from a charged particle
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Equivalent capacitance of a circuit
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Friction, Mass and Acceleration: Analyzing Block Motion
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A Cylinder Rolling in a V-Groove
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Pulley, two masses and an incline
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Energy Density with a Dielectric
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Sum of angles with x,y and z axis made by a vector
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Kinetic energy transfer from shockwave to secondary body
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Student sliding bag along floor in elevator
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Non-inertial observer inside train
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Angle of acceleration in non-uniform circular motion
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Kinetic Energy / Potential Energy / Total Energy question
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Confused about quantum tunneling through 200V not eV
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Solving kinematic formula for t
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Charge of 2 conducting spheres separated by a distance
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Calculating Distance Travelled Using Electric Potential
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State whether the distance x for the block would be greater/less/same
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Rotational inertia of square about axis perpendicular to its plane
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How to Correctly Solve for the Minimum Distance Between Two Electrons?
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Solving Free-Body Diagrams for Moving Nuts on Rods: Tips and Techniques
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Finding the launch angle for a projectile if the range is 3x the max height of the trajectory
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Solving for x in 0 = -1/8 + 3/8 x / (10^2 +x^2)^0.5
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Finding Charge Density on the Surface of a Slab
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Electric field of a cylinder given the electric field of a ring
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Points of inflection on acceleration graph
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Describing path of the object in an xy plane
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Are lost volts the difference between EMF and terminal potential difference?
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Question about two elastic collision formulas
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Question about the solution to this elastic collision
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Why does a wrist have 3 degrees of freedom?
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A complicated problem of motion on rough surfaces
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Find velocity-time equation from velocity-position equation
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Circular motion in planets and satellites
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Solving $\vec F = m\vec a$: How is $\vec F = -mkv$ Possible?
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Magnitude of the Line Charge Density of a Power Line
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Solving a Puzzling Physics Problem: ##15 \pm 3\sqrt{15}##
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Tension in a spring that's bent into a semicircle
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Two carts are forced apart by a compressed spring
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Can you please explain Bernoulli's equation?
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Solving for r: 3.24 Meters Too Far?
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How does tire pressure affect distance traveled by a bicycle coasting to a stop?
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How is Wave Intensity Affected by Half Amplitude and Double Frequency?
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Momentum in a perfectly inelastic collision
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Find the total time taken and acceleration in the given problem-Kinematics
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Determining Current Direction in a Charging RC Circuit
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How to Solve IGCSE Lens q with Unspecified Distance
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Finding the potential difference in a circuit
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