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.
Trouble understanding frames in relativity
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Why does the PE of particles during steam condensation decrease?
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Torque on a sign hung by a hinge
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Acceleration of a ball at its max height after being thrown upwards
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Oscillation of fluids in a U tube
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A microwave oven of mass 13.0kg is pushed a distance 8.80m up a ramp
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Free-body diagram: Spring-loaded cylinder sliding on a metal rod
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A 2.8-kg block slides over the smooth icy hill -- Find the minimum speed to clear the pit
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A household fridge removes heat, determine power the fridge draws
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Find h in the problem involving a stone thrown upwards
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Voltage-resistance graph for this circuit with a variable resistance
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Work done by a balloon that is rising
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Coefficient of friction of a sandwiched body
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Kinematics, is this a poorly worded question?
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Efficiency of Stirling Cycle - Is it the same as the Carnot Engine?
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Circular motion and moment of inertia - circle loop
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Pressure question: Weight of a car calculated from tyre contact patch area
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Ionic thruster high school science project
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Rolling without Slipping Demo
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RCL series circuit analysis: Damping Constant
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Electric field of a charged disc with a small circle cut out of it
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Block tied to a fixed string on an accelerating wedge
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Use of imaginary charge vs Gauss' law
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Relation between the velocity vector and the acceleration vector of an object
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Issue deriving the third law of thermodynamics
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First Law of Thermo: Audience body heat warming a concert hall
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Rotational Dynamics problem with instantaneous frame of reference
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962
Distribution of Energy when work is done on a system of 2 masses connected by a spring
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What Does -∂V/∂x Represent in Newton's Law?
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How to approach this question using SUVAT equations?
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Confused about kinematic equations
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What is the relationship between tire size and pressure changes?
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Moment of Inertia of Solid Sphere - Proof
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Reading of Ammeter for this circuit with Voltage Controlled Resistors
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9
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Relation between Friction, Velocity, and Acceleration
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Is this statement acceptable? (time derivative of a rotating vector)
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Entropy Change For Van Der Waals Gas
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Maximum Power dissipated at load resistor
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Poiseuille law and friction force help
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Reversible, adiabatic expansion - Entropy Change
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Linear momentum but quadratic kinetic energy?
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Are there two downward forces acting on the pivot of the rotating rod?
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Thermodynamics: Violating Clausius => Violating Kelvin
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The motion of a skateboarder along and above a ramp
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Deriving the particle's motion using numerical integration
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Circular motion, coin on a rotating disk
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Angular velocity- A toy train rolls around a horizontal track
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Energy stored in the steady state circuit
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Solving Kinematics Problem: V_o & Max Height
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Additivity of thermodynamic potentials?
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Two Forces Acting Simultaneously
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Electric field of a finite linear distribution of charge
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Conversion factor when converting from SI to natural units
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How do I calculate forces in a truss cross section?
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Clausius' Theorem and Entropy
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Circular argument? Justification of equipotential points
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Is My Calculation of Work Along a Defined Curve Correct?
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Thermodynamics of a Heat Engine - (First/Second Law)
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Finding the distance of a peg so that a pendulum can circle around it
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Energy of springs connected in series and parallel
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The specific work done on an ideal gas during an adiabatic process in a piston-cylinder system
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Relative electrical energy consumption for different light bulb color temperatures
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Frequency of Reflected light in special relativity
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Confusion about work done by a gas - Thermodynamics
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Thermal exchange between warm object and ideal gas
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Thermodynamics: Two gases in a container
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Show that the radius of the exoplanet is about 1/2 of Earth’s radius
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Total Energy vs Average Energy (Thermo)
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Electric flux from line charge through plane strip
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Investigation into electric guitar pickups
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Electric field created by point charges
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Confusion about applying Faraday's law to a circuit
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What's the energy stored in a parallel plate capacitor?
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Mass Pulley and torque -- Confusion in this Atwood machine problem
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Derive Gravitational Force and Field between two identical rods
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A particle slides down a non-fixed hemisphere
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Two spring-coupled masses in an electric field (one of the masses is charged)
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Find the equivalent resistance of this circuit
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How Do I Draw a Decay Scheme in Radiochemistry?
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Determine the type of measurement by classification
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Rope tension problem: Mass hanging from a rope tied at an angle
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Potential in spherical shells
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Internal Resistance Affect the Balancing Length in a Potentiometer?
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Robot starts to overturn when reaching to pick up a load
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Distance rolled of sphere vs cylinder with same m, r, and v
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Determine energy required to stop rolling mass
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Required force for sphere start rolling
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Conservation of String Exercise
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Reflection and Transmission of String Waves
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Tension in a rope hanging between 2 trees
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How do I calculate the Tension in a rope going over a smooth pulley?
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Liquid rocket engine excercise
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Connecting a number of EMF sources in a circle to form a circuit
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Friction force on a ball falling through a body of water
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Is the Trigonometric Analysis of Conveyor Belt Forces Correct?
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Gradient and Divergence in spherical coordinates
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Making a vehicle go straight on carpet
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A Braking System with Spikes for Cars
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Torque on a Circular Current Loop under a Misaligned Magnetic Field
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Rod with Current on Rails in Magnetic Field
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