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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Calculate Coefficient of Friction for a Bike Starting from Rest
- ludic
- · Replies 1 ·
How Does a Graph Demonstrate Newton's Law of Cooling?
- Procrastinate
- · Replies 1 ·
How to Calculate Voltage Gain for Amplifiers B and D with Limited Input Voltage
- breeno
- · Replies 4 ·
Finding the Angle Between Two Charged Spheres Using Coulomb's Law
- seto6
- · Replies 1 ·
Can torque only be caused by a force couple?
- Voliminal
- · Replies 3 ·
Calculate Power Needed for Conveyor Belt System
- tehipwn
- · Replies 1 ·
Magnetism (determining the magnetic field)
- jojo14
- · Replies 1 ·
How Do I Calculate Energy Changes in Thermodynamics Problems?
- Roro312
- · Replies 3 ·
Special relativity: Lightning and Trains (no math involved)
- Gravitino22
- · Replies 4 ·
Position vs. Time graph equation
- lcary
- · Replies 1 ·
Ive got a gravitational Potential Energy Question
- clearlyjunk
- · Replies 1 ·
Force Per Length and Magnitude of a Current
- hexus0
- · Replies 1 ·
Basic Nuclear Decay: Calculating Min Mass for 10Ci in 30 Months
- Lachlan1
- · Replies 2 ·
How to Calculate Reactions at Point A Using the Laws of Sine and Cosine?
- drkidd22
- · Replies 10 ·
Black Body Net Heat Absorption Problem
- MattMark'90
- · Replies 3 ·
What is the change in entropy when mixing water and alcohol?
- huybinhs
- · Replies 2 ·
Calculating Torque and Power in Flywheel Energy Storage Systems
- ZzZerozZ
- · Replies 1 ·
Rate of medication elimination
- csands
- · Replies 1 ·
Angular Momentum - Train Placed on a Wheel
- Crusher8576
- · Replies 2 ·
3 ways of finding muzzle velocity?
- bails24
- · Replies 1 ·
Electric Potential and Charges Problem
- buyerat
- · Replies 3 ·
Pendulum question - Vector addition of forces
- daysrunaway
- · Replies 4 ·
Understanding Displacement Current in Charging a Capacitor
- frozenguy
- · Replies 1 ·
Measuring g with Physical Pendulum Time Period (T)
- bon
- · Replies 6 ·
Solving Conduction Heat Wave in Metal Bar
- roam
- · Replies 6 ·
How do I calculate the gravitational red shift for a white dwarf star?
- roam
- · Replies 1 ·
What is the Work Done by a Heat Engine Operating on a Given Cycle?
- huybinhs
- · Replies 10 ·
How Is Work Related to Heat in Thermodynamic Processes?
- jagged06
- · Replies 2 ·
Satellite following circular orbit.
- dator
- · Replies 4 ·
Adiabatic expansion in a thermodynamic system
- cirimus
- · Replies 5 ·
What is the threshold speed needed for this process to occur?
- bon
- · Replies 22 ·
Calculating Power for a 1300 Kg Sports Car Accelerating to 95 km/h in 7.3 sec
- brando
- · Replies 2 ·
Elastic and inelastic collision formula
- trust_noone
- · Replies 1 ·
Calculating Slit Width Using Microwave Wavelength
- Funf
- · Replies 1 ·
Calculate Heat Removed from 130 g Steam to Ice
- jagged06
- · Replies 1 ·
Why do identical vessels with different gases at same P and T have different properties?
- jagged06
- · Replies 6 ·
Relating molar volume to fugacity in solution thermodynamics
- danago
- · Replies 1 ·
Diffraction grating (missing diffraction beam)
- pfellas
- · Replies 4 ·
Potential Energy Change of Mass at Earth's Radius
- sphyics
- · Replies 3 ·
Finding wave speed from y = 0.2cos(10x - 4t)
- ninjarawr
- · Replies 3 ·
Conserved kinetic energy in collisions in different frames
- bon
- · Replies 5 ·
AP FRQ, cue stick strikes a billiard ball, torque, COM, etc
- therest
- · Replies 3 ·
Shanghai Tian Yang Steel Tube Co.,Ltd
- tianyang88
- · Replies 1 ·
How do i measure thermal conductivity?
- TimeTraveler
- · Replies 2 ·
Finding Thevenin equivalent with dependent voltage sources
- endrezr
- · Replies 8 ·
Work done by motor pulling up elevator
- JUSTaROCK
- · Replies 5 ·
Solving a Horizontally Oscillating Ball Problem
- Cfem
- · Replies 3 ·
Annoying electrostatic question
- superaznnerd
- · Replies 7 ·
Pulling a box up a ramp - Newton's second law
- mybrohshi5
- · Replies 6 ·
Finding tinfoil length from mass, thickness and width
- JUSTaROCK
- · Replies 3 ·
Surface area of basket ball full of sand
- JUSTaROCK
- · Replies 5 ·
Proof of the equation of gravational potential energy
- jwu
- · Replies 2 ·
Propagation of uncertainty problem
- libelec
- · Replies 4 ·
Energy Changes of Cyclist: X to Y
- Cheesus128
- · Replies 3 ·
Is the beam in equilibrium with three forces acting on it?
- Cheesus128
- · Replies 2 ·
Diffrence between negative accelaration and positive decelaration?
- Cheesus128
- · Replies 6 ·
How Do You Calculate Average Speed If You're Given Distance and Time in Minutes?
- Cheesus128
- · Replies 3 ·
Finding initial temperature of copper shot in water and aluminum cup
- tcharger130
- · Replies 1 ·
Camera tossed to rising hot air balloon passenger
- P944
- · Replies 1 ·
Finding power line height from ball throw times
- P944
- · Replies 4 ·
Book dropped in descending elevator at 3.3 m/s
- P944
- · Replies 2 ·
Solve Moving Train Problem: Acceleration of -1.85 m/s^2
- Logistix
- · Replies 2 ·
Carnot Air Conditioner Question.
- MrGoodyear812
- · Replies 2 ·
Work done by and on gas in isothermal expansion
- ƒ(x)
- · Replies 2 ·
Calculating Heat Transfer from a Person in a Room
- febbie22
- · Replies 6 ·
Deducing the Elementary Charge from Milikan's Oil Drop Experiments
- imatreyu
- · Replies 13 ·
How Does Voltage Variation Affect Power in a 100-W Heater?
- LeakyFrog
- · Replies 3 ·
Pendulum hanging from a roller coaster
- CloCon
- · Replies 5 ·
Net force on charge between two point charges on x axis
- adam32386
- · Replies 12 ·
How Does the Lorentz Transformation Affect Observed Velocity?
- Camilla
- · Replies 1 ·
Spring hanging from ceiling gives twice the answer with energy method
- IDumb
- · Replies 2 ·
Two-photon production from 0.8c electron-positron annihilation
- Krappy
- · Replies 4 ·
Energy of a Binary System (Gravitation)
- somebody8888
- · Replies 1 ·
Force between blocks in a line with 14 N push
- farrah003
- · Replies 12 ·
Mass of Atom in a Mass Spectrometer
- JonHO
- · Replies 4 ·
What Forces and Powers Are Involved in Moving a Wire Through a Magnetic Field?
- cse63146
- · Replies 4 ·
Image position from object at infinity in glass rod with hemispherical end
- fl415
- · Replies 8 ·
How Do You Calculate Resistance and Current in a Carbon Block Using Ohm's Law?
- LeakyFrog
- · Replies 3 ·
Determining Acceleration of Collar P on Rod AB
- marshall104
- · Replies 14 ·
Frequency of a pressure vs time chart
- emc2566
- · Replies 2 ·
What is the Equivalent Resistance in this Circuit?
- keemosabi
- · Replies 3 ·
How Can I Make a Simple Electric Motor with These Materials?
- Sirsh
- · Replies 1 ·
How Is the Total Momentum Calculated in a Two-Car Collision?
- mybrohshi5
- · Replies 2 ·
How Does Gauss' Law Explain Charge Induction on a Shell from External Charges?
- keemosabi
- · Replies 5 ·
How Does a Heat Engine Lift a Mass Efficiently?
- CloCon
- · Replies 1 ·
Electromagnetism and earth question
- lolzwhut?
- · Replies 1 ·
Box up a ramp - Work and friction force (easy)
- mybrohshi5
- · Replies 11 ·
What is the maximum height h of his jump above the end of the ramp
- nmegabyte
- · Replies 1 ·
Throwing a Short Put - simple Distance problem?
- helpphysics
- · Replies 2 ·
Special Relativity and spacecraft
- sean-820
- · Replies 4 ·
Is the Thrust Problem on an Airbus A320 Jetliner Unsolvable?
- acspin
- · Replies 11 ·
Harmonics Question; prove that v max of a mass on a spring is given by 2 pi f A
- lost_in_phys
- · Replies 11 ·
Particle rolling on a circular path
- diegocas
- · Replies 7 ·
Finding Displacement Amplitude of a Pressure Wave
- roam
- · Replies 4 ·
Unleashing 1.8MJ in Just 1ns: The NIF's Power Per Pulse
- VelvetRebel
- · Replies 1 ·
Angular Momentum of a Bird Flying Near a Building
- mybrohshi5
- · Replies 2 ·
Calculate the magnitude and direction of the resultant force on the object.
- Cheesus128
- · Replies 6 ·
Coulombs Law solving for electrostatics force
- alan1592
- · Replies 5 ·
Acceleration-Constant speed-Deceleration over fixed distance and time
- puppetworks
- · Replies 5 ·