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.
Current through a circuit when the key is open
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Current flowing in an open circuit
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Change of internal energy during linear transformation
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How does one calculate the number of photons striking a surface per second?
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Find net external work of a system w/ 2 objects w/ opposite forces
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Internal energy won't add up to 0 in cyclic process
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Two balls, dropped with a delay of ##\Delta t##, meet after rebound
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Static Equilibrium Reaction Question about Fixed Point
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Why can we use this approximation in rotational work-kinetic energy theorem for small displacements?
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How Do You Begin Creating a PV Diagram from Complex Data?
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Instantaneous Acceleration Given Equation for Velocity
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Minimal rotational kinetic energy for a gyroscope to precess
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How does this potential divider circuit work?
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Vertical Mass Spring System | Analyzing work
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Understanding relative velocity in 1D elastic collision
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Stefan-Boltzmann's Law. How to apply to the Sun
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797
Why Does Surface Tension Allow Bubbles to Form Despite External Pressure?
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Optimizing energy expenditure over a race course in cycling
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Does levitation distance increase as Fg increase???
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Sign of Work (Negative or Positive)
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4
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839
Kinetic energy in center of mass reference frame
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3
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How Can Derivatives Determine Speed in Physics Problems?
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Work Pulley Problem with constant speed
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A ball is thrown w/initial speed vi at an angle 𝜃i with the horizontal
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Spinning a Bucket to measure gravity with the parabolic surface of the water
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Angular acceleration of plank hanging off edge with a weight
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Compare the conductance of an insoluble salt with soluble one
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864
Circuit with potential difference across battery being zero?
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How Do You Calculate Wire Extension Under Sudden Loads?
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Final velocity of the barbell dropped after a dead lift
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7
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998
How can I calculate the Density and Volume of a mechanical mixture (atoms)?
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Why do the headlights on the car become dim when the car is starting?
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Why Is Energy Released in Nuclear Decay Equal to Change in Binding Energies?
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Translational Equilibrium Practice problem
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Worst-case power consumed by a circuit with MOSFETs
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Flux linked with circular coil vs solenoid
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Can Two Particles Have Multiple Collisions in a Single Interaction?
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How force on atom in diatomic molecule varies with distance
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Electromagnetic Induction in AC circuits
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Using energy considerations to analyse particle motion
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3
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983
Dragging an object: what is Fmin and magnitude of acceleration?
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3
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Comparison between two Tippe tops
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Why does mass not affect sliding speed down an inclined plane?
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Find the value of ##θ## and frictional force acting on the block.
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Find the Tension in the cable when the lift is moving at constant speed
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Using energy considerations to determine speed
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794
Series RLC circuit connected to a DC battery
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Finding the center of mass of a piecewise function
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Confused by Lorentz transformation equation
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Final speed of particle far away from rings with opposite charges
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Is the Total Energy Change in a Closed System Always Zero?
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Sound absorption/Acoustuic attenuation coefficeint (α(ω)) of PVC foam?
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Is potential energy defined only for internal conservative forces?
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How to Determine Temperature Difference Between Two Stars Using Spectral Lines?
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A sphere held steady on a slope by a rope
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Find force as a function of position: F=F(x) using v=v(t)
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Refractive index of seawater and a diver transmitting RF for 100 meters
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Bead sliding along wire with constant horizontal velocity -- Shape of wire?
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Forces applied to a spring-loaded gas pedal
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Index Notation, Identity Matrix
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Create a physics problem for me!
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The movement of a package on a conveyor belt
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Calculate how much weight the crane could lift
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Energy stored in a double spring system
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Torque calculation based on distributive load
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How Much Explosive Force is Needed to Overcome Drag and Elevate a Car?
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How should this Beam Loading experiment be designed?
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Surface area of inclined XY plane at 45 degrees
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Two masses on a slope with a connected tension force
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How to write this expression in terms of a Hyperbolic function?
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(Magnetism) Magnetic pull force on a steel ball
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Why is the Bridge Crane Force 2820 N?
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Gauss' law for a cavity in an insulator
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Punching a hole in a tape moving at relativistic speed
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Fast and Furious Scene Analysis
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Can the polarity at the 2 ends of a solenoid be the same in normal conditions?
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Special relativity and standard configuration
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Calculating Force and Acceleration in a Two Block System with Varying Friction
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How to calculate velocity of infinite-stage rocket?
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How does burn time affect the parameters in the rocket equation?
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Tension & Circular Motion Question - Looking for speed
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Conservation Laws and Velocity Reversal in 1D Collisions
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Final Velocity of a car with a opposing decreasing drag force
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Can You Convert Meters to Kilograms?
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Kinetic Energy being larger than Mechanical Energy in a Hotwheels Lab
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Amplifier gain in resonant RLC circuit
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How does a difference in air pressure induce a force?
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Having a hard time learning Newton's 2nd law
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How Do You Incorporate Drag Force in Free Body Diagrams for Multiple Objects?
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What is the definition of the dalton (Da) unit?
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Magnetic field due to electric wire
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Can the Voltage Across a Capacitor Be Greater Than the Source Voltage in a Series RLC Circuit?
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Calculate the magnetic moment of a rotating sphere
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Ejected out from an accelerating spaceship
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Find the man's tension pulling the rope
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Calculate density of neutrons in a beam
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How does the rise in temperature of fuse wire depend upon its radius?
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Relative Motion: Understanding the Relationship Between Moving Objects
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Catching a loaf of bread thrown vertically at a window
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Can the Magnetic Field Be Determined Using Biot-Savart Law Superposition?
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