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.
What Factors Affect the Acceleration of Hanging Bodies on a Pulley?
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Car's maximum acceleration on a road is proportional to what?
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Evaluating a cycle [Thermodynamics]
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Change in internal energy of a cylinder
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A sphere rolling without slipping down a hemisphere
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Estimating the velocity of seismic waves through an idealized Earth
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Triangles inside a circle to represent raypaths inside an ideal Earth
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Evaluation of heat and work for a stirred liquid
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Velocity along the cylinder axis
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Work to bring a charge to the center of two quarter circles
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Reasoning/evaluation: Free fall motion with constant acceleration
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Electrons and their little role in nuclear physics
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Finding the distance between two nuclei right after fission
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Is the image upright for a reflective spherical balloon using ray tracing?
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Using Kirchhoff's Rule - Theory question
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Contact and electromagnetic force
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Inverse square law of gravitation and force between two spheres
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Three-phase voltage inverter (some questions)
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Double Differentiation and Acceleration in a Four Pulley System
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Linear systems: Tmax = Umax is not making sense
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Plotting the graph of Friction Force vs. time (Laws of motion)
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Simple kinematics question -- Riding a bicycle race in two different gears
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Why Does the Second Block Accelerate Without an Apparent Force?
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PV Graph Question: Internal Energy Not Zero?
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A Trolley oscillates horizonally between two springs....
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The electric field from its electric potential: semicircle
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Two forces acting on an object given in vectors - SOLVED
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Maxwell's Capacitor argument for a time independent Current
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A system of two bodies and wall
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Boiling a glass of water in a bowl of water - tricky question?
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Find force on a particle at time t
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Find focal length of electron for a parabolic motion
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A uniformly charged rotating sphere does not radiate, why not?
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Fields (Gravitational fields) -- Escape Velocity from the Moon
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Tension on both sides of the rope is supposed to be the same?
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Can You Solve This Motion Problem Using a Simple Trick?
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Two masses connected by a rope on a pulley on a ramp
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Magnetization of ferromagnetic material
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Find the contraction of angles seen by an observer
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Physics 101 mechanics help -- Bullet fired by a rifle barrel
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Minimizing the voltage drop across a capacitor (solution shown)
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Net force and position of objects in space
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Find electric field inside a material
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An iron cylinder inside a solenoid
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Bound charges of a block (top and bottom surface)
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Probability of finding a pion in a small volume of pionic hydrogen
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Understanding the Force of Two Cubes
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Weighted average score for exams and quizzes
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Find out velocity of an observer (relativity)
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Force on three Bolts holding up a Jet Engine
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Special relativity - measure of a rod and simultaneity
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The polarization charge density ##\rho##p in a charged dialectric
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Which object is moving to the right with a constant speed?
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Position of the image of an object placed in water
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Solving Motion Equations with Integration
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Investigating the Charge Distribution on a Bulging Sphere
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Why Is My Calculation of Heat Energy Incorrect?
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A Projectile problem -- Time to reach 1/3 of the max height
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Intensity Distribution of Superposition of 2 Waves
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A disconnected capacitor with two dielectrics in parallel
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Calculating Total Flight Time for a Rocket: A Scientific Approach
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Understanding Distance and Displacement on Velocity-Time Graphs
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How Does Acceleration Affect Velocity in 1D Motion?
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Find the equation of this magnetic field
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Find the energy which was released when the 'Death Star' was destroyed
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Work and kinetic energy comprehension question
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Quick question about the heat Q transferred between water and skin
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Invariant mass and energy balance
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Understanding Free Fall: Newton's Laws and Gravity
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Find the total power developed in the circuit given the readout
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Is Your Reasoning on Track? Get Feedback and Graph Analysis!
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The velocity of a movable block that is penetrated by an arrow
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Tension in a pulley system pulled at an angle
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Thermal Physics Problem -- Dropping a hot mass of iron into 20C water
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Integration of velocity to get displacement
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How can I calculate the speed of a π+ meson based on its decay distance?
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Find second object's velocity in relativity
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Conservation of Momentum problem — Firing a cannonball
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Why isn't the scaling factor included when stating particle mass in eV?
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Special relativity and Lorentz Transformation Exercise
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Why do we use area under the curve to find displacement in particle motion?
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Choosing the Correct Solution for Velocity: Balloon and Stone Experiment
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Confusion about whether to use the specific heat of water or ice
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How does the presence of a dielectric change the max V of a capacitor?
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A rolling ball, find distance traveled
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Doubts on Exercise Wording: Energy Density & Poynting Vector
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Help Solving 2 Qs: Tan(Ɵ) & Sign Direction Error
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Comparing hydrostatic forces at the bottom of these 3 containers
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How Do You Calculate the Natural Angular Frequency of a Dual-Spring System?
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How to use Kirchhoff's voltage law on this circuit?
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Solving Physics Problem with Angles and Trigonometry
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Calculating Force to Push Steel Rod Up 50 cm
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Finding acceleration from position formula
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Magnetic Surface Currents and the Interaction of Magnetic Fields with Matter
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Finding the coefficients of a Resistance vs. Temp curve
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Can Resistance Determine the Torque in a Solenoid Pendulum System?
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Morin's mechanics problem 2.3 (motionless chain)
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Halliday Resnick Krane Chapter 2 Problem 30: Juggling Five Balls
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Maximize Range of Projectile Launched from Cliff
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Show that ##\int \frac{d\vec{a}}{d} = \frac{4}{3}\pi \vec{r}##
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