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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Why does current i_1 depend only on capacitor C in a two-capacitor LC circuit?
- arpon
- · Replies 3 ·
Normal Reaction in the following cases
- Kasul
- · Replies 6 ·
Tension in a vertical twisted string with mass
- jonny23
- · Replies 4 ·
Calculate acceleration due to gravity
- rasen58
- · Replies 4 ·
What is the solution to the straw paradox?
- Ansuman
- · Replies 9 ·
Kirchhoff's Loop Rule Problem.
- Prashasti
- · Replies 10 ·
Why Does the Bar Exert More Force Than the Gymnast's Weight?
- urbano
- · Replies 1 ·
What Happens to a Partially Inserted Dielectric in a Capacitor?
- Patrikp
- · Replies 1 ·
Changing pitch in frequency ratio?
- Mickey Tee
- · Replies 6 ·
Coefficient of kinetic friction between a car and the road
- discosucks
- · Replies 12 ·
Air is compressed in a cylinder
- Karol
- · Replies 5 ·
Laws of Motion topic -- Car being decelerated by a headwind
- Barclay
- · Replies 5 ·
How Does Changing the Wheel's Axis Affect Platform Rotation?
- hitemup
- · Replies 1 ·
Neutral Point between point charges
- Samurai44
- · Replies 12 ·
Change in voltage due to additional source
- Queequeg
- · Replies 3 ·
Pressure increase when force is applied to all four pistons of a water-filled container
- jonny23
- · Replies 8 ·
What is the effect of air resistance on a parachutist's acceleration?
- lila adel omar
- · Replies 18 ·
How Does Adding Weight to a Forklift's Forks Affect the Load on the Rear Axle?
- longnh
- · Replies 12 ·
Using Compressed Air Tools Outdoors: Can it be Done?
- stephenranger
- · Replies 1 ·
What is the acceleration of a falling coin?
- Barclay
- · Replies 8 ·
Finding velocities of asteroids after an inelastic collision
- Timothy S
- · Replies 5 ·
Question of Force - why it differs in reality?
- PhysicStud01
- · Replies 10 ·
Velocity of end points of the rod
- Satvik Pandey
- · Replies 33 ·
''Invariant mass of the electron and electron antineutrino''
- Coffee_
- · Replies 5 ·
Does the formula W = pc apply to work on massive particles like electrons?
- Alettix
- · Replies 6 ·
Ray transfer matrix - Plano convex lens
- AwesomeTrains
- · Replies 9 ·
How to describe motion of the wall of a liquid container?
- sceptic
- · Replies 6 ·
Energy and momentum in a car accident
- Jakob Weg
- · Replies 4 ·
Why Does Rearranging an Inductor Yield Different Magnetic Fields?
- matej1408
- · Replies 3 ·
Why multiply by speed instead of area in magnetic flux calculation
- Samurai44
- · Replies 5 ·
Calculating Mean Free Path of N2 Molecule in UHV Chamber
- albega
- · Replies 2 ·
FRW dust universe: deriving energy-momentum conservation equation
- binbagsss
- · Replies 1 ·
Calculating Mass Increase of Coffee Using Specific Heat Capacity
- Smartgurl
- · Replies 9 ·
Labeling + or - on random point on circuit- What does it mea
- LongApple
- · Replies 6 ·
Does a Silvered Plano-Convex Lens Act Like a Concave Mirror?
- sarthak sharma
- · Replies 5 ·
Motor Principle and Magnet on Balance
- mixedbag4444
- · Replies 2 ·
How High Can a Garbage Can Be Lifted by a Geyser?
- geoffrey159
- · Replies 13 ·
Nuclear / Particle Phys Notation quick q spin, parity,J
- binbagsss
- · Replies 1 ·
How Does a Pendulum Bob's Speed Relate to Its Displacement Angle?
- ubergewehr273
- · Replies 10 ·
A wheel with rotational inertia I = 1/2MR^2
- hitemup
- · Replies 6 ·
Find a for infinite distance travel with drag force F=kv^a
- Patrikp
- · Replies 10 ·
Redrawing circuit with series/parallel combinations to match solution
- LongApple
- · Replies 9 ·
Given Force is 4xDisplacement, find work done
- Govind_Balaji
- · Replies 10 ·
A rotational tire and tape problem.
- Lazar Trif
- · Replies 8 ·
Wind turbine powering alternator of car instead of engine?
- quietfury
- · Replies 13 ·
Why Does the Laplacian of 1/Vector r Equal Zero?
- NewtonApple
- · Replies 3 ·
How to calculate wind turbine output?
- quietfury
- · Replies 16 ·
How Can I Trigger a Ball While the Car is Moving for My Physics Experiment?
- nese
- · Replies 2 ·
Tensions of cable over a pulley
- arpon
- · Replies 6 ·
Finding initial velocity when jogger accelerates then decelerates over 11m
- Ksenia
- · Replies 6 ·
The 1100 kg mass of a car includes four tires
- hitemup
- · Replies 6 ·
Determine the speed of the rock as it leaves the spring.
- HumanPerson
- · Replies 9 ·
Question based on using vectors
- katuan
- · Replies 6 ·
Why is nσvdt a probability for molecular collisions?
- fayled
- · Replies 33 ·
Impulse and average force in a baseball collision
- julianwitkowski
- · Replies 5 ·
Induced electric field due to a moving wire
- ELB27
- · Replies 3 ·
How much oxygen escaped from the container?
- Karol
- · Replies 4 ·
Find the Tension and Acceleration of Cable B in Picture 3
- arpon
- · Replies 4 ·
Electric current function of time
- Karol
- · Replies 3 ·
The voltage and an electric heater
- Karol
- · Replies 4 ·
Latent Heat Solid->gas Liquid->gas transitions
- thonwer
- · Replies 2 ·
Angular momentum of non-coaxial rotating disks
- basheer uddin
- · Replies 4 ·
Energy, momentum and centre of mass
- erisedk
- · Replies 19 ·
Resistance grows with temperature
- Karol
- · Replies 4 ·
Sign of Frictional Torque in Pulley Equation
- hitemup
- · Replies 5 ·
Matrix representation of an operator in a new basis
- peripatein
- · Replies 8 ·
Modulation of waves (Communication Systems)
- Prashasti
- · Replies 6 ·
Find Tension of Rope in Two Blocks System: 5kg, 7kg, 4kg, 200N
- legendknight
- · Replies 3 ·
What Factors Affect the Speed of a Skydiver One Second After Jumping?
- Barclay
- · Replies 11 ·
Dependence of resistance on temperature
- Karol
- · Replies 2 ·
Calculating Heat Capacity of Calorimeter
- Armitage12
- · Replies 12 ·
Oxygen and mercury in a tube problem
- Rugile
- · Replies 6 ·
Amplitude Modulation of a wave
- Prashasti
- · Replies 3 ·
How Does a Rope Fall Through a Hole in Physics?
- geoffrey159
- · Replies 4 ·
What Is the Fastest Way to Cross a Flowing River by Boat?
- rasen58
- · Replies 5 ·
Find resistance of resistor in RC circuit
- AndrejN96
- · Replies 4 ·
What Is the Stopping Distance for Cars A and B?
- Barclay
- · Replies 9 ·
Does a static container apply a torque on Earth ?
- Cri85
- · Replies 2 ·
How Does a Gravitational Slingshot Affect Spacecraft Velocity?
- MMS
- · Replies 22 ·
Why does constant curvature force Riemann tensor to depend only on the metric?
- binbagsss
- · Replies 8 ·
Why apply weight force at center of mass for a fluid instead of at the bottom
- Cri85
- · Replies 15 ·
Calculating Velocity on an Incline Slide
- keithcuda
- · Replies 21 ·
Why Do Planets and Stars Revolve Around Their Center of Mass?
- erisedk
- · Replies 11 ·
Finding Effective Resistance using Kirchhoff's Rule
- Hijaz Aslam
- · Replies 12 ·
Notation for marking the voltage drop in this picture
- LongApple
- · Replies 5 ·
Is the Bar of Gold Real? Using Buoyancy to Determine Density
- BrainMan
- · Replies 15 ·
Maximum Angle for Non-Null Initial Velocity of Billiard Ball Hit by Cue
- anon90
- · Replies 38 ·
Accelerating projectile force needed
- cheekibreeki
- · Replies 2 ·
Water discharging vertically from a pipe at 5 m/s
- EmmaWillow
- · Replies 2 ·
Horizontal velocity over an uneven surface
- rasen58
- · Replies 2 ·
Why does the thinner wire experience 4 times the stress, not 8 times?
- BrainMan
- · Replies 2 ·
Elastic properties of solids problem
- BrainMan
- · Replies 4 ·
Calculate the buoyant force on a solid object made of copper
- BrainMan
- · Replies 4 ·
At What Distance Will a 10 km/s Bullet Fired Vertically from Earth Arrive?
- ezio1400
- · Replies 7 ·
How Long Should the Inclined Plane Be for a 100 kg Box?
- keithcuda
- · Replies 31 ·
Bubble in water tank affects overall weight?
- Cri85
- · Replies 31 ·
Resultant Velocities / Elastic Collision / 1-D?
- julianwitkowski
- · Replies 12 ·
Resonance Experiment:-Air Tube Column
- andyrk
- · Replies 12 ·
Understand Effusion of a Gas: Speed & Angle Distribution
- physiks
- · Replies 6 ·
Finding final position with initial conditions but no acceleration given
- Ryan Hwang
- · Replies 6 ·