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.
Doppler Effect Question: Flying Bat Echolocating a Mosquito
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Final momentum of box with reflective interior hit by ideal laser
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Explain why applying different forces to objects of different masses result in different accelerations
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Incandescent Bulb - suitable approximation for voltage-current curve
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Diophantine equations and physics
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Underground cables faulty point detected
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Motion of an electron inside the cavity of a charged sphere
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How to solve this driven RLC circuit?
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Electrostatics and current problem with 3 metallic balls
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How to set up this problem with driven torsional oscillator?
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Find the mass of odium for both solid and liquid state
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Find the final temperature of the combined honorite and odium?
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Difference between maximizing amplitude by choosing omega_0 given omega_d versus choosing omega_d given omega_0.
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Mechanisms Involved When Charging a Battery
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Find final temp of 2 substances once they have reached equilibrium
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What is the meaning of the intercept of a particular solution to damped oscillator?
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Magnetic Field of an infinite current-carrying wire at a point
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To what extent does this system behave as a pendulum?
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Force on a block placed on a rotating disc, calculated in different reference frames
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How does a simple circuit work?
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Why is current constant through a resistor?
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Did I Misuse the Parallel Axis Theorem for Polar Moment of Inertia?
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Why is the current in a conductor equal to zero when not connected to a circuit?
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Why does electric potential energy increase if you move against the field?
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Determining angular velocity of weight attached to a cord and cylinder
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Electromagnetic force on a positively charged particle
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Why would this be accelerating positively?
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Calculating the Relative COG of Two Masses
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Pistons placed on top of communicating vessels
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20
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Is Linear Momentum Conserved in This Case? (sliding box hits a floor tile)
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Ray optics: velocity of image reflected off a moving mirror
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Analyzing torque of an automobile engine
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6
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Confusion over acceleration of gravity as positive/negative
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10
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A cylinder has two sides containing gas and water separately
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4
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Finding the angular velocity of a pendulum
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Number of bright fringes given by diffraction grating on a screen
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How Many Lines Per Millimeter Does the Diffraction Grating Have?
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What’s gone wrong with my derivation of the Lorentz Factor?
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Find ratio of brightness & the distance the 6th dark fringe is from central fringe
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Coulomb's law to find electric field for charge density function
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Find smallest distance x from y-axis for both constructive & destructive interference to occur
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Find smallest value of y for constructive interference
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EMF induced in moving rod in B-field, why is "L" length of wire frame?
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Why is vertical displacement second order in horizontal displacement for coupled oscillator?
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Induced EMF due to a moving magnet
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How to Apply Derivatives in Physics Problems?
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How to calculate pressure when two forces are exerted
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Equivalent resistance of this 6-sided circuit
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Please help with this suggested solution involving electrostatic press
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Find the change in the time required, if acceleration increases by the differential amount 'da'
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Solving for potential using surface charge density of a sphere
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Tension in a string which connects 3 pulleys
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Particle in one dimension wave function from Quantum Mechanics
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Minimal distance between two planes moving perpendicularly
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Analyzing acceleration of block on a ramp connected to a pulley
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Friction problem of a block sandwiched between 2 surfaces
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How friction acts on a block moving down a slope moving side to side
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How to find the equivalent resistance of this infinite circuit?
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The div in cartesian coordinates
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Find the location of the diver's reflection in the convex mirror
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Find the electric field between 2 finite discs
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Find the location and length of the final image
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Man pulling a boat along the water with a rope (from above on a steep bank)
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Material Selection - Hooke's law [not]
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Tension Force Problem (applying Work-Kinetic Energy Theorem)
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Falling mass, additionally accelerated by a rope
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Calculating torque on a pendulum
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Electric field lines outside a neutral conducting spherical shell
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How to calculate quality factor for RLC circuit?
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Gauss' law for charge distribution of a point charge at the origin surrounded by an insulating sphere
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Mass atop four springs with external input: Reduce vibration amplitude by factor of ten
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What mass must be placed on the cord to keep the pulley from rotating?
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Ratio of volumes in a vertical cylinder with a piston
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Estimating damped harmonic oscillator parameters from this plot of the oscillations
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A rod that falls while rotating from the end of a table
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Question about Projectile Motion: Throwing a Flower Pot from a Balcony
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Doubt regarding View factor/shape factor of infinite inclined plate
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The speed of the point of intersection of two uniformly moving lines
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Theoretical velocities at different heights sliding down an inclined plane
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How to determine if electrical components are connected in parallel or in series?
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Electric flux through an inclined cylinder
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A charge q approaching two stationary charges q1 and q2
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Analyzing this 2-lens optical system
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Charge conservation for 3 parallel charged plates
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Force transmitted to a block in viscous fluid through a spring, cord, and pulley
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Two Inverted Pendulums connected by a rope
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Gauss' law problem -- Should the field due to both the inside and outside charges be taken into account?
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Help finding the change in potential energy in this problem
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Textbook 'The Physics of Waves': Linearity of Forced Oscillator
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Induced currents on a pair of separated dipole antennas
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Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
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Ball launched from a height of 5 meters --- Projectile motion
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Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
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Energy analysis of the system (leaking bucket from Morin's "Mechanics"
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Textbook 'The Physics of Waves': Lifetime of SHM Oscillators
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Textbook 'The Physics of Waves': Calculating Work Done by Force
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Textbook 'The Physics of Waves': Reason to force us to consider complex solution for harmonic motion?
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Is there a limit on how much energy a photon might have in a FOR?
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How to parametrize motion of a pendulum in terms of Cartesian coordinates?
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Is the line integral of tangential force in pendulum equal to the negative of change in potential energy?
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