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.
Capacitor Circuit Analysis: How to Find Voltage Across Resistors
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Calculate new RPM after change in g-force in a centrifuge
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Determine equivalent Young's Modulus
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Find the Electric field at point p
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Why is the Entropy of the Universe (total entropy) a path function?
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Find the charge of the sphere (q2)
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Approximating Glucose as an Ideal Gas: Can We Calculate Entropy?
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Feynman exercise - container with steel balls
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Initial Position Discrepancy Involving Fluid Resistance
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Newton's Laws of motion -- Bicyclist pedaling up a slope
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How to calculate magnetic induction just beyond the end of the magnet?
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Conservation of Energy with Mass on Hemisphere
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What is the smallest value of angular displacement of the raft?
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How does this system work? (Four pulleys and a rope lifting a mass)
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Degrees of freedom with a particle and a rod
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Can two objects moving parallel relative to a ground meet?
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What is the speed of the ball when it hits the ground?
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What is the difference between friction and rolling resistance?
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Determining a centripetal force proportionality equation
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Hydrostatic pressure at a point inside a water tank that is accelerating
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Why are the effects of a magnetized material neglected in this case?
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Finding COM of L-Shaped Rod and Ball System
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Solving Question through Inertial Frame: Challenges & Workings
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How are the poles of a tapered magnet distributed?
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Calculate the minimum force required
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How do I find the coefficients of static friction and kinetic friction?
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Conservation of momentum and mechanical energy on an inclined plane
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Problem on Parallel Plate Waveguide
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Four very long, current carrying wires in the same plane
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Static and Kinetic Friction -- Tilting a ramp until a block starts sliding
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Sinking a cylinder with varying hole sizes
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Why does an electron have minimum kinetic energy when its momentum is 2h/λ?
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Analysis of systems in equilibrium: articulated structures
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Why Does the Electric Field Component Ex Require a Negative Sign?
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Archived Magnetic Flux through a Cylinder
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Calculation of Electrostatic Potential Given a Volume Charge Density
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Calculating ##F_{DB}##: Equilibrium in a Machine
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Torques exerted on a vertical disk by multiple forces
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How can the force of a normal reaction be electromagnetic?
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How Are Beam Support Reactions Calculated?
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Kinematics of movement subject to a variable acceleration
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How do I solve a tension and torque problem without prior knowledge?
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Analysis of a Figure to Calculate Force and Moment
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Pushing on a spring connected to a block
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Solving an Inertial Mystery: Angular Acceleration and Mud
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Equilibrium of a rigid solid on a rod
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Determining Current and Voltage Drop in RLC Circuit
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Question about the conservation of mechanical energy
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Determine the net torque acting about the center of mass
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Kinetic energy of the Monster Hunter cannon
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Moment of inertia of T bar about 3 axes
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Why does a diamagnetic rod align perpendicular to a magnetic field?
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Coulomb's law — A negative charge balanced between 3 positive charges
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Calculate 6-Spoke Wheel Torque: F1d1+F2d2=F3d3+F4d4
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Study of harmonic motion of a liquid in a V shaped tube
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X-ray production and ionization energy
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Torques on a vertical wheel due to 3 masses spaced along the wheel rim
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2 blocks and a spring, SUVAT and F=ma
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Trouble with the concept of tension....
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Relative velocity passing a ball between two soccer players
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Relative Velocity and Angles of Movement (Sears & Zemansky's Exercise)
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Tainter Damper Figure: Analyzing Forces
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Find angles such that the motion travels a specific distance
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Angular Velocity from KE, radius, and mass
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Kleppner Kolenkow 2.34 (mass whirling around on a string)
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Inertia from four masses connected by massless rigid rods
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Reduce the pressure in an air reservoir
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Two traveling waves g(x,t) = Asin(kx-wt) and h(x,t) = Asin(kx+wt+phi)
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Projectile Motion on an Incline
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Calculating Energy Dissipation for a Moving Object Using Integral Calculus
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Evaluating minimum and maximum values with calculations
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Total force that a fluid exerts on a cylinder
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How do I incorporate electric fields into capacitors?
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Hollowed out sphere exerting gravitational force
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Air wedge - why is reflection from top of first slide ignored?
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Why is the height of the table not necessary to solve this problem?
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Elevator falling and bouncing back from a spring
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Skater pulling another skater with a rope, F=ma
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Resultant force and centre of pressure in a tank
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Tetrahedron with 3 points fixed, and force applied to 4th
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I'm getting two possible uncertainties for frequency
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Compressor driven by an electromagnet
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Can't remember equation for coefficient
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Second bright fringe in Young's Experiment
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Functional representation of the oscillating graph
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Air wedge interference pattern after being filled with water
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Viscosity in lubricating fluid in the bench-guide of a machine
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Manometer containing two liquids
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Spring and block on an inclined plane
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Is it possible to solve this problem without using integrals or derivatives?
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Is Mass Irrelevant in This Problem?
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Find the electric field at a point away from two charged rods
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Expectation value in momentum space
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Ampere's Law for Cylindrical Conductor
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Acceleration required for ship to avoid crashing into another ship
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Surface density of stars in a Galaxy
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Rotational dynamics: Resolving forces
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The maximal normal force (Friction with slanted surface)
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Hanging mass on a massless pulley
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Derive angular frequency for mass spring system
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