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.
The biomechanics of elbow extension
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Minimum force required to keep two blocks from not falling
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4
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876
Derivation of angular velocity using the unit circle
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838
Interesting question: design of a truck-based crane
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How Does Induced Current Change with Loop Acceleration Through a Magnetic Field?
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T-Shaped Pendulum: Find the Total Mechanical Energy
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Conservation of Energy with Gravitational Potential Energy
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Homework help : The difference between these 2 circuits
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Static vs Kinetic Friction on an Unbanked Ramp
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1K
Moment of Inertia of a Disc: Is it paradoxical?
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Calculating Forces in a Leg: Gait Analysis and Joint Reaction Force
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Would one be pushing as much as their weight?
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Confusion in using the continuity equation here
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Vector Operators: Grad, Div and Curl
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White light passing through prism
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Speed of a mass falling into a star given the mass and radius of the star
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Calculate the focal length of a thin convex lens
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1K
Friction Forces on 2WD vs 4WD Vehicles
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Different sunset times due to elevation ##h## at a point on the Earth
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Conservative forces in circular motion?
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Semi-infinite + finite potential well QM
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Calculating the Average speed given two speeds
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Distance traveled when decreasing velocity
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How Do Two Rotating Rods Interact?
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What is the right formula to use in this context? (momentum conservation)
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Help with science project to launch a projectile
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6K
Does Heating a Metal Wire Change Its Properties?
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15
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972
Kinematics: 100 meter dash when one runner starts 3 seconds later
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14
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1K
How to correctly round in physics?
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Spring with mass hangs from the ceiling
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Electric field between capacitor plates when a dielectric slab is inserted
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Understanding Ultrasound and Aluminum Plate Interaction: Factors to Consider
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646
Is the Molar Specific Heat of Air Similar to Hydrogen?
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1K
Mathematical model for drag on tether
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Thermodynamics - Hot copper block dropped in ice water
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9
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Why is there a resistor in a MOSFET-based inverter?
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Calculating Net Force on a Wheel: Magnitude and Direction | 0.350 m Radius
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4
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Spring constant formlula for Force and Work Done
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Graphing the Superposition of Two Standing Waves
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8
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2K
I have a Lab Report on Centripetal Force
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726
If tension provides the torque to this pulley, what is its equation?
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5
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958
Movement of the water level in the barrel - calculate its velocity, etc.
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1K
Conservation of energy and momentum for a bullet fired into a block
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What is a focal length of a thin convex lens?
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Height of a stable droplet on a perfectly wetting surface
2
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63
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Why Does the Force Meter Show Different Readings in Similar Situations?
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6
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1K
Solving for Masses in an Atwood Machine
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2K
Kirchhoff's law: Find the current I3 through the Amp meter
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4
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2K
Calculations for accelerating particles in a Cyclotron
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3
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Average Angular Acceleration of a Music CD over 75 minutes
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Is My Understanding of Angular Momentum and Trigonometry Correct?
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999
The period of a simple pendulum
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What minimum speed do we need to give a charged ball?
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12
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Graphically determining the focal length of a converging lens
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4
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2K
Two networks described by v-i graph: Find voltages when interconnected
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1K
Frequency & Wavelength of a Vibrating Wire
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5
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1K
Find the Electric field due to an electric dipole at the origin
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12
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1K
Why do I keep getting friction coefficient as a negative?
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17
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3K
Two equations "combined" don't give the desired result
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3
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869
Electrons enter charged capacitor
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657
Relationship between horizontal force and friction in an exercise
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7
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996
Classical mech. - inelastic collision
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12
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1K
Find the unkown tensions and masses in the situation below
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8
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931
Is Solar Radio Flux dependent on Spectral Class?
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6
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951
The normal force on a thin stick being lifted on a surface
2
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95
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Magnetic Field due to a curved wire
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3
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16K
What was the mistake in solving for the speeds of two marbles after a collision?
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5
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Why is the square root of x^2 = |x|?
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14
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Finding an open-cicuit voltage, why is resistor in series ignored?
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What helium mass in a balloon to make it bouyant in air?
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12
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Graphing Elastic Potential Energy
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10
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Why Isn't the Right Side Negative in a Vertical Spring-Mass System Equation?
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3
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Point particle model for a person pushing a block on ice
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26
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What Are the Differences Between Black Body Radiation Formulas?
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5
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Misunderstanding Work-energy theorem and center of mass properties
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7
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Tension in a string being pulled from both ends
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48
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Gravitational acceleration magnitude - confused
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4
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Brownian Ratchet (exercise framed by Feynman's Lectures, l. 46)
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32
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Wavelength of traveling wave on string (one end clamped and one end free)
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3
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Physics puzzle about the concentration of fog droplets in the air
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26
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Showing Complex Vectors are Orthonormal
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13
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Oscillation of free surface of water in parallelepiped container
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Find the diameter of the piston at certain heights
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Conservation of momentum for a robot on a space platform
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Oscillation with friction - Analytical mechanics
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Calculating the central temperature of the Sun using the ideal gas law
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Projectile motion when only given distance and acceleration
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Projectile motion only provided acceleration diatance
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Work done in a chamber with gas undergoing adiabatic free expansion?
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Confusion on product rule for mass of differential volume element
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4
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Is my understanding of nuclear fusion and binding energy correct?
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Well of Death: Physics behind it
2
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68
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Gauss' law and Faraday cage problem
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10
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Pulley system and energy conservation?
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22
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Four Snails Traveling on a Plane -- Do they cross paths?
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33
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Work done on container receiving gas from high pressure container
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Acceleration of stacked blocks on an inclined plane
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14
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Finding value of g given a motion map
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30
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Concave mirror reflection, problems with drawing setup
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5
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Finding the magnitude (length) and direction (angle) of a vector
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Intro Physics Homework Help

Introductory Physics Homework Help is a service that assists students in their assignments related to the fundamental principles of physics at the introductory level.

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