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.
Film Thickness for Minimum Reflection of Monochromatic Light: How to Calculate?
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What Is the Correct Method to Estimate Ionization Energy in He-like Carbon?
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Can someone help me to calculate the velocity at Stack Tip?
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Simple reversed heat engine problem
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Kleppner Mechanics: Disk and coil spring
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Solving Entropy of Mixing Problem in Physics
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Infinite chain of alternating charges (+/-)
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Why don't voltages add up numerically in an LCR AC circuit?
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What Was the Initial Speed of the Proton in a Collision?
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How Do You Calculate Oscillation Frequency for a Quadratic-Cubic Potential?
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Electric field between conducting and non-conducting sheets
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Circular orbit change after gaining mass ejected from sun
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Electromagnetic Waves — Given E, find B....
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Tangential Acceleration/Tension
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Catapult Shooting Distance: 76.79m
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Centripetal Acceleration of Satellite
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How Does a Spring Impact the Angular Frequency of a Pendulum?
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Proton vs electron, find the magnetic field for the electron
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Charge Flow in Earthed Conducting Shell with Non-Symmetric Configuration
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Determine fine-structure constant
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-- Calculate force at CG & away from CG
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Time required store half the maximum energy in an inductor
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Magnetic field in 3 dimensions
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What is the range and time period of this particle?
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Divergence of B, circular current loop
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Which powers works on bead on a string?
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What is the difference between the centre of pressure and the centroid?
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Bullet Momentum Force: 3.15x104 N
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Understanding Uncertainties: Explaining Common Questions and Misconceptions
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When Friction the block m2 start to move?
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How do I do this trigonometry vector calculation?
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Why Does the Bucket on Keel 3 Tip to the Left?
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Number of waves from an oscillating source in one period
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Wave function - displacement - transverse wave
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Rod w/ Pivot and Attached Mass Pendulum
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Determining the Speed of a Rotating Disk with a Constant Force
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How Many Food Calories with Efficiency %
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A few questions regarding Neutral Objects
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Rotational Mechanics question with spring
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Centre of mass of a hollow pyramid
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Relativistic Distance/Time Problem
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Solving System of Equations (including Trig)
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Find the velocity of the rain drops with respect to the man?
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A question about liquid pressere
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Energy dissipated by resistor problem
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Force on a part of a spherical shell on the other
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Understanding Rigid Body Rotation: Solving Problem 4A and B from a Physics Exam
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I''What is the optimal resistance for maximizing battery terminal voltage?
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Understanding Simple Harmonic Motion: Explaining x=Acos(wt+phi)
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Understanding an Elementary Torque Concept
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AC circuit, voltage and frequency problem
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Hi, help me to check my answers, dynamics, energy and work
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Electric Field and Potential Difference in a Coaxial Cable
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Which Force is Represented by the Gradient of the Ball-Wall Collision Graph?
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Should point at which E field = 0 coincide with V = 0?
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Conservation principles and particle-particle reactions
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Why 't = 0' here in this equation in the case below?
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Double slits and convex lens interference
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Oscillating rod attached to spring
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Force exertion by liquid in a jar
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Help with a few homework questions on force:
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Dependence of extention on length
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Mass needed to balance the magnetic force on upper rod
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Magnetization of the core of a long solenoid
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You're welcome, Rémi! Good luck with your exercise.
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Muon production and decay from relativistic annihilation
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How much energy do I consist of?
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Find the length of a roll of GI steel sheet given its weight
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Applying W=F*s for variable force
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Constraint equations in mechanics
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Capacitors: find he charge for the new battery
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Why total time taken s₁/v₁ + s₂/v₂ + s₃/v₃ in average speed?
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Simulating scintillation (twinkling)
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Landau Vol.1 Mechanics(3rd ed.) Ch.II §7. Momentum Problem
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Simple Pendulum undergoing harmonic oscillation
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Is the following decay process possible?
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If A = i + j + k and B = -I + -j + -k, what will be an angle....
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Gauss' law: find the electric field
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Buoyancy of Balls A and B in a Swimming Pool
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Reflection Coefficent in Ultrasound scan
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Hysteresis loop magnetization of Gadolinium
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Find the maximum safe depth of a submarine
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Why is the normal reaction force zero in the absence of any external force?
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Capacitors: find the dielectric constant
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Using conservation of energy vs. Newton's laws in a pulley problem
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Common velocity after truck starts pulling a car
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Using differentiation to find a general expression
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Physic (kinematics) — Displacement of an accelerating car
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Find the weight of a box sliding on a floor....
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How do I calculate the potential created by a dipole
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Finding b in Van der Waals Equation?
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How Do You Calculate the Magnetic Field Near a Current-Carrying Ribbon?
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Calculation of Change in Magnetic Flux Linkage Across a Wire
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What is the Angle Between Perpendicular Vectors?
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Momentum Kleppner Classical Mechanics Freight Car and Hopper
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Find the displacement from equilibrium after some time
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Flow of Water in a plastic bottle
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How Does Light Intensity and Frequency Affect Photoelectron Emission?
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How to find the net acceleration?
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Assumptions made when deriving the speed of light
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