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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Two pulleys lifting a mass in parallel
- Hamiltonian
- · Replies 13 ·
Shooting in a π/4 Angle: Is it Possible?
- fer Mnaj
- · Replies 7 ·
Thermal energy/ heat in a parallel connection
- AnneX
- · Replies 9 ·
Flow rate of a pipe - calculation
- AnneX
- · Replies 10 ·
Calculation with this electric circuit (battery and resistors)
- AnneX
- · Replies 22 ·
Spring-mass system in circular motion has a maximum angular speed?
- Bruce_Pipi121
- · Replies 9 ·
Block on a wedge connected to pulleys
- Hamiltonian
- · Replies 15 ·
How Does Balloon Volume Change During Ocean Descents?
- guv
- · Replies 3 ·
When is the rate of change of Kinetic Energy maximum here?
- rockinwhiz
- · Replies 19 ·
Lenz law how to find dA/dT and O?
- Nicolas01
- · Replies 4 ·
How Does Friction Affect System Movement?
- Nexus99
- · Replies 12 ·
Trajectory of a mass element in a string overhanging a pulley
- burian
- · Replies 19 ·
Total Potential of a Ring at Point P
- Hamiltonian
- · Replies 13 ·
How far from the mirror should the light source be positioned?
- A13235378
- · Replies 6 ·
Current in a current-carrying loop experiencing no torque
- SilversGodot
- · Replies 1 ·
How Does a Semi-Permeable Membrane Affect Entropy in a Two-Chamber Gas System?
- LCSphysicist
- · Replies 10 ·
Why Does Kinetic Energy Increase More with Higher Initial Velocities?
- digalumps
- · Replies 38 ·
Changing of frequencies in the Doppler effect
- LCSphysicist
- · Replies 3 ·
Ratio of acceleration of two solid cylinders released on two inclined planes
- songoku
- · Replies 22 ·
Field of a Trianglular Solenoid
- Taulant Sholla
- · Replies 4 ·
Path/time function of a freesbie (the ride at amusement parks)
- Kakainsu
- · Replies 40 ·
Finding the current in Field winding
- Physicslearner500039
- · Replies 2 ·
Calculating Boiling Point of a Solution: A Joke Problem for Extra Credit
- docnet
- · Replies 3 ·
A bit confused about significant figures
- maxelcat
- · Replies 19 ·
Calculating the Force and Torque on a current loop
- Physicslearner500039
- · Replies 3 ·
Normalisation constants with ladder operators
- etotheipi
- · Replies 10 ·
Spring constant matrix and normal modes (4 springs and 3 masses)
- LCSphysicist
- · Replies 2 ·
Angular momentum: Grooved cone with a mass sliding down the groove
- madafo3435
- · Replies 4 ·
Work & energy VS conservation of angular momentum
- Ebi
- · Replies 9 ·
Can Tension in a Whirling Rope be Modeled as a Centrifugal Force?
- Hamiltonian
- · Replies 8 ·
Choosing proper coordinates in a complex 2 pulley system
- baseballfan_ny
- · Replies 6 ·
Estimate the partition function by analyzing a graphic
- LCSphysicist
- · Replies 1 ·
Position and Momentum probability for +x direction
- tanaygupta2000
- · Replies 14 ·
Can mv^2 /2 + mu^2 / 2 + kq^2 / L = kq^2 /X? Find Out!
- A13235378
- · Replies 9 ·
Need Help With These Resistor Network Problems Please
- stiwi_xyz
- · Replies 24 ·
What are the other forces acting on ##dm## in addition to gravity?
- Vivek98phyboy
- · Replies 1 ·
Direction of acceleration of a projectile with drag force
- baseballfan_ny
- · Replies 6 ·
Two blocks on a third block which is split into two ramps
- burian
- · Replies 8 ·
Understanding Motion and Collision in the Absence of Gravity
- Nexus99
- · Replies 3 ·
Mechanics: A bowling ball is thrown and rolls with slipping
- enthusiast
- · Replies 8 ·
Easy interference problem regarding Newton's rings
- LCSphysicist
- · Replies 4 ·
How to Grow a Sustainable Garden""Growing a Sustainable Garden: Tips & Tricks
- ambarish
- · Replies 1 ·
What is the derivation for the probability of energy in quantum mechanics?
- etotheipi
- · Replies 8 ·
Correct statement about error and uncertainty
- songoku
- · Replies 2 ·
Simple harmonic motion homework
- misterpicachu
- · Replies 7 ·
Basic question about coplanar forces
- Elevenses
- · Replies 2 ·
Falling Rain Drop (Variable Mass)
- Potatochip911
- · Replies 16 ·
Gear Rotation puzzle is confusing 50:10 GR but 6 rotations
- sshanker
- · Replies 20 ·
Sketch a qualitatively accurate graph of the entropy of a substance
- LCSphysicist
- · Replies 1 ·
Triangular Trolley: Solving Mass & Force Dynamics
- Nexus99
- · Replies 15 ·
Pressure & Force: Gases, Liquids, Solids
- aspodkfpo
- · Replies 12 ·
Doubt about the 2nd position vector direction in a particle's movement
- mcastillo356
- · Replies 4 ·
Why is the downward force on 1kg in a force pulley system 60N?
- aspodkfpo
- · Replies 5 ·
The Effect of Increasing the Size of a Solid on Its Entropy
- LCSphysicist
- · Replies 1 ·
The Vertical Force of a Spring: A Logical Argument
- guv
- · Replies 98 ·
Do Spikes Increase Friction? Benefits of Wearing Spikes for Runners
- aspodkfpo
- · Replies 7 ·
Questions on Wheels: Reduce Friction & Traction
- aspodkfpo
- · Replies 7 ·
What Is the Opposing Resistance for a 14ohm and 10ohm Circuit?
- Froskersss
- · Replies 5 ·
A skier goes down a slope -- Ignoring friction, calculate the acceleration
- mcastillo356
- · Replies 6 ·
Doppler radar measurement by an aircraft
- LCSphysicist
- · Replies 4 ·
Moment of inertia, center of mass and vincular reaction of a rod
- Nexus99
- · Replies 16 ·
Verifying Coordinate System for Electric and Magnetic Forces
- mcastillo356
- · Replies 4 ·
Total energy of the normal mode on a string
- LCSphysicist
- · Replies 3 ·
Pulling a tablecloth from under a glass
- Leo Liu
- · Replies 12 ·
I want to learn about basic and advanced angular momentum
- A13235378
- · Replies 2 ·
Hydrostatic pressure of liquid in a cart on an inclined ramp
- A13235378
- · Replies 13 ·
Variable friction on an inclined plane and maximum velocity
- rockinwhiz
- · Replies 33 ·
What Is the Frequency of Small Oscillations for a Pivoted Rod with Two Springs?
- madafo3435
- · Replies 19 ·
Angular acceleration calculation
- robax25
- · Replies 3 ·
Is the Time to Reach Earth's Center Correct?
- tanaygupta2000
- · Replies 5 ·
What size flywheel do I need to produce 200kg torque or resist a force of 200kg?
- flywheel
- · Replies 1 ·
Moment of inertia of two coaxial disks
- Nexus99
- · Replies 8 ·
Momentum Problem -- Bullet fired into a block of wood
- Petext
- · Replies 2 ·
Normal force acting on a block on an accelerating wedge
- Leo Liu
- · Replies 12 ·
How to Become a Better Cook""Becoming a Master Chef: Tips for Better Cooking
- poodle123
- · Replies 3 ·
How Do Kinetic and Potential Energy Differ in Physics?
- girlwhoneedsmathhelp
- · Replies 3 ·
When Will the Car Overtake the Truck?
- anonymous99999
- · Replies 2 ·
The center of mass of a semicircular arc of non-negligible width
- Hamza M khan
- · Replies 3 ·
Question about charged capacitors and inserting a dielectric into one
- Kaushik
- · Replies 3 ·
What am I Missing? Solving Conservation of Energy
- Vivek98phyboy
- · Replies 7 ·
Tilting the plates of a parallel plate capacitor (and other changes)
- guv
- · Replies 17 ·
Calculating Pressure & Density Proportions with Changing Altitude & Temperature
- cwill53
- · Replies 19 ·
A block on an accelerating wedge
- Leo Liu
- · Replies 4 ·
Finding the excess electrons per lead atom
- Physicslearner500039
- · Replies 2 ·
Solving Waves on a Metal Rod with kx + Φ
- LCSphysicist
- · Replies 3 ·
Degrees of freedom of a water molecule
- LCSphysicist
- · Replies 8 ·
Question about Waves on a String
- Abdullah Almosalami
- · Replies 2 ·
What exactly is pulling the man up/down in rocket?
- Benjamin_harsh
- · Replies 5 ·
Length contraction and Time dilation for LIGHT?
- Stephen Bulking
- · Replies 8 ·
Did I Calculate the Speed of a Comet Correctly?
- Albertgauss
- · Replies 6 ·
Calculate the New Velocity and the Velocity of a Pendulum Mass
- Justinboln
- · Replies 1 ·
Fundamental frequencies in a violin string.
- LCSphysicist
- · Replies 3 ·
Clausius clapeyron and heat capacity
- B4cklfip
- · Replies 1 ·
Rigid body sliding without overturning
- gonza178
- · Replies 17 ·
Point-like charge between grounded plates: Induced charges
- Jacob White
- · Replies 9 ·
Pipe Friction, Reynolds number & Bernoilli's Equation
- sci0x
- · Replies 7 ·
Change in a rocket's kinetic energy
- Miraj Kayastha
- · Replies 5 ·
Angle of deviation from a magnetic field
- tanaygupta2000
- · Replies 5 ·
Thermodynamics: phase change and latent heat problem
- NickDime
- · Replies 12 ·
Trivial : Use of "negative sign" when calculating centroid
- JC2000
- · Replies 12 ·