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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Sinking bucket - differential equations
- markswabinski
- · Replies 1 ·
Why Does Susan Fall Forward When the Metro Brakes?
- fogvajarash
- · Replies 16 ·
Calculating Tension Force After Elastic Collision
- A. Aspart
- · Replies 1 ·
Calculate the capacitor capacity
- oph
- · Replies 56 ·
How to Calculate Water Pressure on a Floating Cube?
- Molly1235
- · Replies 4 ·
Minimum area of a shoe heel exerting pressure
- Molly1235
- · Replies 7 ·
How to Apply Kirchoff's Laws to Solve Resistive Circuit Problems
- Yosty22
- · Replies 15 ·
What is the Correct Angle θ in a Traction Setup with a Pulley System?
- Minusu
- · Replies 7 ·
Projectile of 250g at 1200m/s sticks to 3500g object
- pdaniels77
- · Replies 11 ·
Why is Vg negative in this circuit interconnection?
- sevag00
- · Replies 8 ·
Finding force magnitude when net effect acts vertically
- HeJind
- · Replies 2 ·
Velocity of object falling from Hill Radius to Earth
- bowlbase
- · Replies 9 ·
How Does Attaching a Weight Affect Spring Equilibrium?
- physicshawk
- · Replies 4 ·
Zero Gravity Flight: Training Astronauts for Space
- zaddyzad
- · Replies 4 ·
Time dilation in relativity: flashbulb on a moving flatcar
- channel1
- · Replies 4 ·
Projectile motion, throwing a ball at a coconut
- Kot
- · Replies 8 ·
Calculating Vector Magnitude and Angle
- viet1919
- · Replies 5 ·
How do I convert c=9e^((-5/2)∏j) to component notation?
- Sastronaut
- · Replies 3 ·
How Does the Velocity of a Suspended Mass Change with Height?
- zibs.shirsh
- · Replies 7 ·
Frequency Analysis of RC Circuits
- Sastronaut
- · Replies 2 ·
Newton's Laws of Motion - Force Problem
- Yshai24
- · Replies 1 ·
Relationship between Frequency and Standing Waveforms.
- Kamuin
- · Replies 1 ·
Showing the expectation values of a system are real quantities
- FisiksIdiot
- · Replies 3 ·
Simple acceleration, force, and mass question
- noobphysicist
- · Replies 1 ·
Determine Radiation pressure given the fraction of total absorption
- MrMoose
- · Replies 2 ·
How to Find the Electric Potential of a Cylinder on the Z-Axis?
- bfusco
- · Replies 1 ·
Simple Conceptual True/False Questions About Magnetism
- Yosty22
- · Replies 1 ·
Pressure on tyres of a vehicle question - Calculating weight
- Molly1235
- · Replies 6 ·
What are the measurements and gravity on Planet X inhabited by the Xinbar?
- obravo
- · Replies 1 ·
Current flowing through the resistor
- joaofbi1
- · Replies 38 ·
Special Relativity: Bullets on a train
- six7th
- · Replies 4 ·
When can we use Vpp in calculations involving Ohm's law?
- Physixs
- · Replies 2 ·
Metal block sliding horizontally
- majinsock
- · Replies 1 ·
Electric flux through cylinder ends with external charge
- tuggler
- · Replies 3 ·
Equilateral triangle charged rods
- oreosama
- · Replies 3 ·
Relative Motion - Airplane Problem
- harujina
- · Replies 4 ·
Pebble dropped on rotating wheel, starts to slide after rotation
- zibs.shirsh
- · Replies 3 ·
Finding electron density from Hall voltage
- Turion
- · Replies 4 ·
Magnetic sphere collecting iron dust with force F=k(R³)
- zibs.shirsh
- · Replies 1 ·
Electron flow in live and neutral wires
- nilic1
- · Replies 2 ·
Henry gets into an elevator on the 50th floor
- p14r
- · Replies 1 ·
Calculating both final velocities (conservation of momentum)
- Pharrahnox
- · Replies 9 ·
Adiabatic process with custom internal energy function
- S_Flaherty
- · Replies 22 ·
2 boxes stacked, determining forces on each other.
- mathwhiz
- · Replies 3 ·
Steel ball launched at 45° with initial velocity 3.3 m/s
- astru025
- · Replies 4 ·
Direction of induced current in conducting ring due to motion of bar m
- agoogler
- · Replies 2 ·
Vector Magnitudes and projectile motion
- danosu43
- · Replies 1 ·
High School Physics Competition: Change in Entropy
- ReneG
- · Replies 3 ·
How to approach physics problems efficiently
- Drk2
- · Replies 6 ·
When to use signed values vs magnitudes in work-energy and impulse-momentum equations?
- Ascendant78
- · Replies 5 ·
115 kg person on scale tilted 40° from vertical
- ericka141
- · Replies 1 ·
Alternate Solution to Conservation of Momentum Problem
- aboakye
- · Replies 3 ·
Answer = 35.3 Watts to Keep 64oz Bottle at 40 Deg in 10 Deg Temp
- EnrgyXprt
- · Replies 2 ·
Physics satellite velocity and period
- astru025
- · Replies 13 ·
What is the n value for Li2+ ion in the Bohr model of the atom?
- physicsnobrain
- · Replies 14 ·
Solve Tension in Cables (T1, T2, θ3)
- NXIShift
- · Replies 4 ·
Solving for Position with Zero Initial Velocity
- Bashyboy
- · Replies 2 ·
Does a Planet's Atmosphere Affect an Astronaut's Weight?
- Minou14
- · Replies 3 ·
Maxwell-Boltzmann Statistics integral
- Yakadellic
- · Replies 3 ·
Average force during a collision
- CuriousParrot
- · Replies 12 ·
Checking my work on a Lennard-Jones problem
- Emspak
- · Replies 12 ·
What is the minimum tension (in Newtons) in the angled rope?
- bah83
- · Replies 2 ·
Finding the Mass Required for Double the Velocity in a Spring-Mass System
- brenfox
- · Replies 1 ·
Highschool Dynamics Lab. Consistency problem?
- Fifty
- · Replies 1 ·
Is this correct?"Calculating Time of Astronaut's Trip Across 15 Light-Years
- sexy_brittany
- · Replies 1 ·
Forces, displacement, and coordinates of a particle
- nerdalert21
- · Replies 11 ·
Finding support forces A and B using moments
- isigne
- · Replies 2 ·
[Motion Problem] When is displacement equal?
- Ticklez_Panda
- · Replies 3 ·
Can You Solve These Challenging Linear Motion Problems?
- Meamour
- · Replies 8 ·
Converting spring constant from g/cm to N/m using static method
- NewSoul
- · Replies 3 ·
Electric flux through a surface
- Plasmosis1
- · Replies 3 ·
Concept question on External force
- crysland
- · Replies 13 ·
Determing the kinetic energy of an electron
- Turion
- · Replies 3 ·
How Does Latent Heat Affect Sweat Evaporation in Cooling the Body?
- BOAS
- · Replies 3 ·
Which problems could arise from this diagram?
- rogerwilis
- · Replies 2 ·
Acceleration of two blocks connected by a pulley
- Esoremada
- · Replies 2 ·
Thrust force of a rocket ejecting mass
- Emspak
- · Replies 3 ·
Force to pull appart hemiphere under vacuum.
- freezer
- · Replies 1 ·
Mercury Barometer Experiment: Atmospheric Pressure
- ftball22
- · Replies 1 ·
How Does Inserting a Dielectric Material Affect Capacitor Charge?
- kopinator
- · Replies 3 ·
Three astronauts equipped with jetpacks
- p14r
- · Replies 4 ·
(Engineering Vectors) Why is this answer correct?
- engineering810
- · Replies 3 ·
Why integrate at these points? (Electric potential of a sphere)
- tappling
- · Replies 3 ·
Maximum velocity of mass on spring displaced 10mm
- brenfox
- · Replies 7 ·
Why Is the Correct Answer mgh/4 in This Energy Problem?
- nish123
- · Replies 3 ·
Line integral of a spherical vector field over cartesian path
- PeteyCoco
- · Replies 4 ·
How does the period of a pendulum affect its time measurement?
- DorelXD
- · Replies 4 ·
What was the speed of the motorcycle before the collision?
- Fishingaxe
- · Replies 14 ·
Rotary (Gears) question - angular acc/velocity involved
- skae
- · Replies 1 ·
How Is the Angle Determined for the Opposite String in a Suspended Rod Scenario?
- physicshawk
- · Replies 2 ·
Conservation of Energy of an Interrupted Pendulum
- annaphysics
- · Replies 1 ·
Understanding Rydberg's Constant: What Do R(sub)H and R(sub)infinity Represent?
- Astronomer1
- · Replies 1 ·
Average Power Output for 260000 kg Jet at 9200m Altitude
- spockjones20
- · Replies 3 ·
Projectile Motion Diver Jump Question
- lvn
- · Replies 1 ·
Error Propogation: Calculating Average Acceleration w/ Uncertainty
- 012anonymousx
- · Replies 2 ·
General: Calculating the Moment of Inertia
- ckelly94
- · Replies 3 ·
Bike Approaching Stopped Truck at Traffic Lights
- AltruistKnight
- · Replies 5 ·
Rank the material according to their indices of refraction
- MrMoose
- · Replies 3 ·
Probability that the electron will pass through the barrier?
- Gee Wiz
- · Replies 9 ·
Force Applied at an Angle to an Object on Frictionless Surface
- jpsmith394
- · Replies 2 ·