Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Young's modulus of a steel post, finding change in length
- DracoMalfoy
- · Replies 1 ·
Solving equation of motion for two body problem
- Robin04
- · Replies 7 ·
The direction of induced current and magnetic field produced
- JessicaHelena
- · Replies 12 ·
How to solve for the distance traveled given force, mass and speed
- aurorarose
- · Replies 4 ·
How high does the ball rise on the non-slip surface?
- annao
- · Replies 2 ·
Mutual inductance coefficient with so little info
- Granger
- · Replies 13 ·
Astronomy- Initial Mass Function problem
- StillLearningToronto
- · Replies 1 ·
What is the angular speed of the rollers after 1.14 s?
- annao
- · Replies 2 ·
Gravitational Energy of Earth<Moon (what distance)
- Mikemorgan12
- · Replies 11 ·
Speed of a Positron: How Does Voltage Affect It?
- jtb93
- · Replies 19 ·
What Happens When Gas Expands at Constant Pressure?
- YMMMA
- · Replies 12 ·
How Does the Fraunhofer Condition Affect Diffraction Patterns?
- says
- · Replies 11 ·
Two voltmeters in parallel measure these different voltages
- Granger
- · Replies 4 ·
What is the detection rate of neutrons in Bill's frame?
- Ken Miller
- · Replies 3 ·
A cat spots a flower pot through the window
- Akash47
- · Replies 7 ·
Hydrogen oxygen ignited volume expansion
- mike l
- · Replies 9 ·
I get two different answers when solving a kinematics problem
- LugubriuousLamia
- · Replies 5 ·
Particle Newtonian Mechanics: Father Pulling 100 lb Sled
- rugerts
- · Replies 15 ·
Why is/is-not energy conserved in these scenarios?
- Lost1ne
- · Replies 14 ·
Kinetic Energy for particles (alpha decay)
- shepherd882
- · Replies 2 ·
Kinetic and potential energy in firing a cannon
- timnswede
- · Replies 7 ·
Nodal Lines from Two Point Sources: Solving for d/lambda
- Barry Melby
- · Replies 5 ·
Simple Ice Skater with Conservation of Angular Momentum
- Lost1ne
- · Replies 4 ·
Work Required to Move a Piano Onto a Truck
- Aliyah Case
- · Replies 1 ·
Find the pressure put into a box by a hand-squeezed pump
- Marianite
- · Replies 1 ·
Wavelength of a laser within an optical cavity
- Taylor_1989
- · Replies 2 ·
Compression of human bone: forces
- maxd23
- · Replies 2 ·
X and Y components of velocity and acceleration vectors
- marksyncm
- · Replies 25 ·
How do transformers work, and how to read dot notation
- eft
- · Replies 1 ·
Force of one distribution of charge on another
- archaic
- · Replies 9 ·
What is the displacement of a 3.0 kg block sliding down an inclined plane?
- Austin Gibson
- · Replies 12 ·
Electric current flowing in a power transmission line
- Sarrah
- · Replies 16 ·
A Nuclear Reaction: Determining the velocity of neutrons
- maxd23
- · Replies 3 ·
Effect of the load sequence on the deformation of a spring
- Nayef
- · Replies 3 ·
Rotational Mechanics Homework: Equations & Solution for Part 1 Work
- PhysicsFuture
- · Replies 1 ·
What's the coefficient of kinetic friction?
- Austin Gibson
- · Replies 8 ·
Projectile motion - determining initial velocity and angle
- marksyncm
- · Replies 8 ·
Confusion in the derivation of the force on a magnetic dipole
- timetraveller123
- · Replies 32 ·
How Do Magnetic Fields Influence Current-Carrying Wires?
- Eliza Farbenblum
- · Replies 1 ·
Diffraction Grating Vs Double-Slit: Small angle Approx.
- Beth N
- · Replies 1 ·
What is the torque exerted by the flywheel on the machine?
- traviata
- · Replies 5 ·
Polarization of Light: Polarizer
- Beth N
- · Replies 7 ·
Determine the x- and y-coordinates of the trapezoidal shape.
- Ella Tankersley
- · Replies 2 ·
Water reach (Hose without and with a nozzle)
- Jenny Physics
- · Replies 12 ·
Minimum force before a system of two blocks will move
- marksyncm
- · Replies 6 ·
Short conceptual question on Work, Energy and Forces
- devilish_wit
- · Replies 7 ·
Pressure Half-Life: 2L vs. 5L Containers
- Seneka
- · Replies 1 ·
Finding the Resistance of a Fault in a Pair of Transmission Lines
- Seneka
- · Replies 8 ·
Curious about Work done by Gravitational force
- Selectron09
- · Replies 2 ·
Nullifying Lorentz Force on Proton Moving in Parallel Direction
- Celso
- · Replies 2 ·
Why Do Moments Balance in a Faraday Disk but Not the Forces?
- FabJohnson
- · Replies 1 ·
Torque Problem: Finding the weight of a horizontal bar
- DracoMalfoy
- · Replies 10 ·
Rotational Kinetic energy of bar, and new kinetic energy
- DracoMalfoy
- · Replies 15 ·
Pully System on an Inclined Plane: Understanding Direction of Acceleration
- Yellowkies_3275
- · Replies 3 ·
Finding the horizontal force that the road applies to the car
- rugerts
- · Replies 13 ·
What is the magnitude of the acceleration of cylinder's com?
- JessicaHelena
- · Replies 4 ·
Find the speed of an object using work and energy
- shepherd882
- · Replies 1 ·
Calculate the work done moving a crate
- shepherd882
- · Replies 3 ·
∇ x E in Cylindrical Cordinates
- tornado
- · Replies 9 ·
Calculatethe direction of a wave
- Wikeboy
- · Replies 2 ·
Finding the mass of a block attached to a spring
- rugerts
- · Replies 23 ·
What are the equations for circular motion on a Ferris wheel with R2D2?
- abelmoore
- · Replies 12 ·
Equation of an oscillating system without any starting values
- RiotRick
- · Replies 30 ·
Elastic collision with particles, find the kinetic energy
- Mathias Girouard
- · Replies 6 ·
What Determines the Force Between Links in a Chain Under Acceleration?
- JessicaHelena
- · Replies 4 ·
Critical angle: find the depth of the fish looking up
- Seneka
- · Replies 4 ·
Finding tension of a string spinning horizontally
- Madelin Pierce
- · Replies 9 ·
Problem with Coriolis Acceleration
- dennis wang
- · Replies 4 ·
What causes electric field/ magnetic field?
- YMMMA
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Position wave function of energy eigenstates in 1D box
- jasonchiang97
- · Replies 4 ·
Finding Momentum when giving the mass and height
- Andrea Fdez
- · Replies 2 ·
Finding the radius in the universal gravity equation
- Madelin Pierce
- · Replies 7 ·
Could I get a second pair of eyes on this?
- dangerboyy
- · Replies 9 ·
How does the position of a force affect a spinning wheel
- Pinon1977
- · Replies 4 ·
Free body diagram on a block pushed against a ceiling
- Madelin Pierce
- · Replies 7 ·
Integral of Acceleration with respect to time
- Ross Nichols
- · Replies 2 ·
What Was the Initial Energy of a Positron Entering a Plastic Slab?
- Binder12345
- · Replies 10 ·
Rotational Motion: Average angular acceleration of a CD
- adangerousdriver
- · Replies 2 ·
Inelastic Collision: Finding Initial Angle
- barryj
- · Replies 22 ·
How Do Friction and Force Affect the Angular Velocity of Connected Wheels?
- Jenny Physics
- · Replies 19 ·
What's the acceleration of the blocks and the tension?
- Austin Gibson
- · Replies 10 ·
Standing wave transverse motion and amplitude
- Declan Purdy
- · Replies 5 ·
Pressure at the bottom of a container containing two liquids
- Akash47
- · Replies 6 ·
PV diagram/ which labeled process has no temperature?
- YMMMA
- · Replies 9 ·
Determine the distance the object travels
- YMMMA
- · Replies 22 ·
Inelastic collision of ball and rod - rotation problem
- Krushnaraj Pandya
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How do masses affect the acceleration of the center of mass?
- Kump
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How Do You Solve a Projectile Motion Problem?
- blackcemre
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The right hand rule in a magnetic field
- many questions
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Finding mass of unbalanced meter stick from torque
- sp3sp2sp
- · Replies 2 ·
Rotational moment of inertia for 3 balls on a pipe
- SakuRERE
- · Replies 21 ·
Motion when Kinetic Friction is more than Static Friction
- navneet9431
- · Replies 10 ·
Rotational inertia hoop around a central axis
- SakuRERE
- · Replies 16 ·
Derivation of Relativisitic Doppler effect with angle
- Arman777
- · Replies 8 ·
Solving for Rotation in a Force & Torque Equation
- SakuRERE
- · Replies 7 ·
Pulley System Part c: Homework Statement & Relevant Equation
- Seneka
- · Replies 1 ·
Angular momentum of particle about the origin
- Krushnaraj Pandya
- · Replies 7 ·
Ring and solid sphere rolling down an incline - rotation problem
- Krushnaraj Pandya
- · Replies 8 ·
Elevator Motion and Bathroom Scale Readings
- Lucyc2008
- · Replies 2 ·
Relevant equations for an airplane landing
- santimirandarp
- · Replies 16 ·