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.
Why is the change in entropy of a heat pump in one cycle equal to zero?
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Change in the energy content of an isobaric process
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How Do Coriolis and Centrifugal Forces Affect Train Motion?
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How can I input formulas and images on Physics Forums?
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Kinematic Equations: Find the time t when two objects meet
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Deriving an equation for theta via the Projectile Motion Trajectory Eq
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Is the Calculation of Spring Deformation in an Accelerating Room Correct?
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Maximizing radiation southward, minimizing it northward, antennas
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What is the relationship between Helium's atomic mass and the Rydberg constant?
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Static Friction in Circular Motion
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Work and energy of an object on a ice slope
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Dielectric interface plate capacitor at angle alpha
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Work of a object moving across surfaces with different friction
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How can we find the center of mass of a solid cone?
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Understanding the Math Behind A: Minimum Length of Plane Mirror
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Show that the flywheel inside the train counteracts lean in a curve
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Blocks in a room which is being accelerated
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Convert J/mol k into atm cm^3/mol k
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Work of gravity on an object sliding down a frictionless sphere
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Why do I feel centrifugal acceleration when standing on a revolving ball?
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Finding angular velocity for a rope to be cut
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Is the Normal Force on m2 Affected by Vertical Acceleration in Different Cases?
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Radiation Q: C Answr w/1cm Alum Plate?
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Calculus Homework Check (vectors/forces)
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Find the E-Field between plates when given only given part of the total voltage
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Finding initial velocity when given only mass and distance
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Parallel circuit with internal resistance
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How much force do I exert on the Earth?
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"Tension: T1 vs T2 - What is Correct?
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Calculate the amount of charge in Amp*seconds
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Finding the acceleration of a pulley system including an inclined plane
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Find the electric field inside and outside of a spherical shell superposition
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Find the angle so that it seems that Mars is approaching to you
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What is the magnitude of resultant force on a car on a banked curve?
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Understanding Pseudo-Forces in Non-Inertial Frames
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Calculating constant of elasticity of springs in a car
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Rotating cylinder rolling without slipping in a B field
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9
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Conservation of energy: a mass and pulley system
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11
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Acceleration acting on a block lying on a wedge (non-inertial frame)
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3
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Tension in the string while it descends
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Temperature change brought about by radiation
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23
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Sink time of a cap with varying hole diameters
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How to Solve Acceleration of Cart on 3 Different Slopes?
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Atwood System - max. height of the lighter object
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Determine when (m), and how long the rocket should fire.
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Rotating a given vector about an axis
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Finding the angular velocity of a rotating arm
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Calculate the Heat Loss in a Hot Water Tank from a Shower
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Calculating the torque of the Laplace force on this coil
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Determine the potential energy function of the charged particle
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What are the spatial dimensions of the plot?
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Finding the Thevenin equivalent by zeroing
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Finding the displacement of an electron between 2 charged rods
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Total work of a directional wind on a mailman
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What is the energy released by Tritium when it decays?
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Finding distance east given west dist., velocities, and average velocity
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Α baseball player throws the ball....
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Understanding Sum to Infinity in Geometric Progression
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Springs in series affecting the uncertainty
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How can air density be accurately calculated at different altitudes?
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How do I solve this physics problem of mechanics and Newton's laws?
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Find the kinetic friction coefficient
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Correct statement about coils moving in and out of a magnetic field
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Using Current and Voltage Dividers
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Electric energy density in the dielectric of a coaxial cable
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Work required to attach the bowstring to the bow?
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Measuring position and velocity from a non inertial reference frame
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Correct statement about gravitational force, field and potential
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Prove that “leading clocks lag”
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Acceleration and tension of a block on an inclined plane
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Calculate internal temperature and energy changes
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Rounding of Final Value with Sig Figs
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Body connected to two parts of a rope on an inclined plane
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Gravitation attraction of a mountain
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Find the tensions acting in different ropes that conect three bodies
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Two cells in series with internal resistors -- calculate the current
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Find the attractive force of gravity between two objects
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Understanding a Homopolar Generator
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Using Newton's Laws: Friction, Circular Motion, Drag Forces
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Unit vector notation, why use 3 letters for a component?
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Identifying Serial and Parallel Connections
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What Is the Variation of Force With Respect to Radius in Circular Orbit?
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Mastering Motion on a Plane: Solving the Defiance Drake Question
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Phase difference between two points
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Finding angular velocity when the CM is directly below the pivot
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Which force acts perpendicular to the side faces of an axe head?
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Conceptual understanding/question of guass and Coulomb’s law
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Forces acting on a block which is lying on another block
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Two batteries with inner resistor in parallel
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Doubts on the sign of acceleration
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Box and a Spring on on an inclined plane
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Tangential Acceleration Problem, UCM
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Find the force needed for a body on an inclined plane to be static?
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What is the ratio of the distances traveled by these two players?
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Kinematics: falling stone question
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What happens when one of two cocentric spherical shells is grounded?
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Velocity of an object with varying mass
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How does the surface of a refracting prism become reflective?
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Index of Refraction Uncertainty Problem
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Energy Method: Inclined Plane - Solving for Velocity and Time
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