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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What is the speed of the boat relative to the water?
- Lori
- · Replies 6 ·
Period of three oscillating charged coins
- timetraveller123
- · Replies 27 ·
Internal energy of an ideal gas as a function of pressure?
- Jacob Dale
- · Replies 5 ·
How can I determine the curve and tension in a hammock with damaged cords?
- ShaddollDa9u
- · Replies 1 ·
Initial Speed of Hanging Mass (HW Check)
- Masrat_A
- · Replies 7 ·
Angular velocity of rod supported by yoyo
- timetraveller123
- · Replies 10 ·
Fraction of Kinetic Energy from Rotating Wheels in Moving Car
- Ignitia
- · Replies 10 ·
Finding Final Velocity or Setting it Equal to 0(Kinematics)
- Lori
- · Replies 5 ·
Potential energy of particle in gravitational field of disk
- Oomph!
- · Replies 3 ·
Finding vectors needed to cancel out given sets of forces
- aron silvester
- · Replies 2 ·
Finding the direction of an angle in the unit circle
- aron silvester
- · Replies 2 ·
Calculating Work on a Falling Raindrop
- stormypanda
- · Replies 4 ·
∆KE if angle between force and displacement varies
- patrykh18
- · Replies 11 ·
Effective cross-section of catching a comet with the Sun
- Oomph!
- · Replies 1 ·
Circular motion - velocity vector
- Poetria
- · Replies 7 ·
Solve for vectors needed to cancel out given sets of forces
- aron silvester
- · Replies 3 ·
Minimum work needed to compensate for a heat leak
- Muthumanimaran
- · Replies 3 ·
Why is specific volume 0.5 m³/kg if saturation tables give 0.001073?
- yecko
- · Replies 7 ·
What is the energy needed for Deuterium-Tritium fusion to occur?
- PhyS194
- · Replies 1 ·
Induced Electric Field In Circuit With Varying Resistance
- PumpkinCougar95
- · Replies 3 ·
The pendulum is released from rest with θ = 30deg
- Alexanddros81
- · Replies 5 ·
How Does Thermal Conductivity Affect Heat Transfer Between Two Water Vessels?
- Roxas ross
- · Replies 1 ·
How Is the Average Power Output Calculated for an Airplane Propeller?
- mcchoy528
- · Replies 1 ·
Electric field outside 2 same charge parallel plates
- Taniaz
- · Replies 10 ·
Centripetal Acceleration Problem: Finding Angular Speed
- Nahtee
- · Replies 2 ·
Cyclotron Radius of Proton: .625m
- Noreturn
- · Replies 3 ·
Falling object, time between images
- physicscanbefun
- · Replies 1 ·
Calculating Impulse and Energy in a Car Collision
- MooPhysics
- · Replies 4 ·
Why does choosing the pivot point change the answer for a ladder equilibrium problem?
- mistermill
- · Replies 13 ·
Finding the time for charging Voltage
- Mohamed Abdul
- · Replies 9 ·
How can I find the maximum KE of the photoelectrons?
- sodnaz
- · Replies 9 ·
Finding x and y components of a magnitude
- aron silvester
- · Replies 1 ·
Field between two parallel postive plate different voltages
- maxelcat
- · Replies 2 ·
Problem in central force motion
- Vashist Settipalli
- · Replies 4 ·
Board on top of two cylinders - inclined plane
- WannabeNewton
- · Replies 2 ·
Two Questions on Newton Law Problems
- Lori
- · Replies 5 ·
Driven resonance v. natural resonance
- BunmiFariyike
- · Replies 6 ·
Newton's third law - normal force
- Lori
- · Replies 5 ·
Calculating the Velocity of an Elevator
- mdavies23
- · Replies 35 ·
Swimmer jumping from 10m tower: velocity and water force
- Wanting to Learn
- · Replies 21 ·
Force on an Accelerating Car: Calculating the Net Force
- Wanting to Learn
- · Replies 2 ·
Velocities and Acceleration on a rolling wheel
- Ignitia
- · Replies 2 ·
Max Input Signal: 0.3V for 1.5mA Collector Current
- Pushoam
- · Replies 3 ·
Minimum Speed for a Horizontally Projected Diver to Clear a Ledge
- dregozo
- · Replies 7 ·
Does the moon orbit as a classical particle?
- Big_Tubbz
- · Replies 1 ·
Direction of friction on two stacked boxes
- fontseeker
- · Replies 9 ·
Tension in string during vertical circular motion
- barryj
- · Replies 5 ·
Train speed from a strap angle on an unbanked curve
- Slam
- · Replies 3 ·
Question Regarding Changes in Kinetic Energy
- Chan M
- · Replies 3 ·
Finding the Formula for Speed and Distance on an Icy Hill
- artireiter
- · Replies 11 ·
Heat flow between systems at different temperatures: net entropy change
- TristanJones
- · Replies 23 ·
Optics - Adding magnification in an optical system
- nordmoon
- · Replies 3 ·
Calculating Acceleration of a Toy Plane Flying in a Circle
- starstruck_
- · Replies 5 ·
Calculating Tension in a Telephone Wire with Mass and Angle
- SillyYak
- · Replies 5 ·
Distance or Displacement-time graph equation explanation requested
- tsuria
- · Replies 3 ·
Can I ask my teacher to mark my homework answers?
- Medeiros
- · Replies 5 ·
What is the velocity of a decelerating boat after 4.9 seconds?
- Lenart Kovac
- · Replies 3 ·
Acceleration, Displacement, Graph Interpretation
- lthcn99
- · Replies 4 ·
Understanding Tension on a Pulley
- TiredCollegeStudent
- · Replies 6 ·
Change in momentum for a satellite in circular orbit
- Peter Coe
- · Replies 6 ·
Why does ΔS = 0 at equilibrium not imply both equations are satisfied?
- Pushoam
- · Replies 14 ·
Griffith Intro to QM, 1st order perturb theory in time-dep
- tjsgkdms1111
- · Replies 1 ·
Work extracted from a general cycle
- Pushoam
- · Replies 6 ·
Calculating Height of a Twice-Daily Orbit Above Earth's Surface
- somekid99
- · Replies 38 ·
Conservation Laws and the Movement of Particles around a Pole
- Jahnavi
- · Replies 1 ·
Vectors and Angles in Helicopter Flight
- gric122
- · Replies 5 ·
Two masses connected by spring with initial velocity
- Jahnavi
- · Replies 18 ·
Space physics scenarios: inertia, momentum and buoyancy
- Matt Poirier
- · Replies 2 ·
Could a steering wheel cause acceleration/deceleration of a car?
- bahtiyar
- · Replies 11 ·
What is the required velocity to make the field goal?
- sololight
- · Replies 2 ·
What Forces Affect an Electron in a Particle Accelerator?
- tarkin
- · Replies 1 ·
Calculate the angular velocity and angular acceleration (pendulum)
- Alexanddros81
- · Replies 1 ·
Frame of reference (non inertial/inertial) in an Atwood Mach
- fontseeker
- · Replies 13 ·
How Does Angle of Force Application Affect Acceleration on a Frictional Surface?
- chahud42
- · Replies 7 ·
Why use infinite series in Laplace equation with Fourier coefficients
- Mike Jonese
- · Replies 3 ·
Strength of materials -- Normal stresses and Shear stresses
- skatoulis100
- · Replies 2 ·
Is Vertical Circular Motion Ever Uniform?
- Sam McCrea
- · Replies 10 ·
How to calculate pressure of a bulb in a system
- mohamad
- · Replies 1 ·
Maximum mass value possible to fuel a spaceship
- Daniel Sellers
- · Replies 18 ·
Maximum height from which a cuboid can fall and not be damaged
- cromata
- · Replies 17 ·
Solving for Radius in Magnetic Field: q of Sr+?
- wjdgone
- · Replies 2 ·
Three masses in an elevator accelerating downwards
- Korrie
- · Replies 8 ·
Object on a vertical Ring with spring attached
- Lambdalove
- · Replies 4 ·
Motion of a particle in a magnetic field and viscous medium
- PumpkinCougar95
- · Replies 10 ·
Magnitude of the Electric Field at the Following Distances
- Darkgora
- · Replies 4 ·
Electric Flux through Cubical Surface Enclosing Sphere
- Darkgora
- · Replies 2 ·
Angular velocity of disk rotating with two arms at different rates
- Mandex Chak
- · Replies 1 ·
What errors did Rutherford encounter in his experiment
- zakthrowaiz
- · Replies 3 ·
Pulling an object at an angle with friction -- find the Kinetic Energy
- omgbeandip
- · Replies 6 ·
Comparing momentum of masses m and 2m under equal force
- robax25
- · Replies 10 ·
How to know whether a given process is reversible?
- Pushoam
- · Replies 10 ·
Two forces questions - Extremely difficult
- Element1674
- · Replies 6 ·
Calculating R with Beta in a Circuit
- Cocoleia
- · Replies 3 ·
Constant thickness lens varying refractive index
- timetraveller123
- · Replies 11 ·
What is the relationship between ds vector and theta in flux integrals?
- Marcin H
- · Replies 7 ·
Ball rolls without slipping in an accelerating car
- astrocytosis
- · Replies 6 ·
Derive a general expression for range when launch angle=0
- aron silvester
- · Replies 7 ·
Two particles on a vertical ring
- EmmanuelE
- · Replies 16 ·
How far to move squat stand for barbell and plate to balance?
- Dave27
- · Replies 17 ·
Calculating Solar Panel Area Needed for a 1MW Power Output
- Ethan_Tab
- · Replies 4 ·