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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Find the internal series resistance of the battery
- prishila
- · Replies 7 ·
How would I calculate the work done by the gas molecules?
- spacealgae
- · Replies 2 ·
Angular momentum in projectile motion
- Yatin
- · Replies 2 ·
Finding orbital period of a satellite at different distances from Earth
- Atominate
- · Replies 17 ·
Snell's law experiment with glass block
- Barclay
- · Replies 5 ·
Measuring current and voltage in a series-parallel capacitor circuit
- ft92
- · Replies 6 ·
Change of Time period of a pendulum with additional mass
- Hijaz Aslam
- · Replies 2 ·
Velocity of a vehicle through a skid
- purplemonkey
- · Replies 4 ·
Metal frame moved through uniform magnetic field
- Masafi
- · Replies 1 ·
Electric field from a charged conductor at 12.9 cm distance
- ft92
- · Replies 2 ·
Most likely speed in Maxwell-Boltzmann distribution
- Vrbic
- · Replies 9 ·
How to Calculate Amplitude Modulation Index Without Prefix
- Padmal
- · Replies 2 ·
The motion of the mass starting from its highest point t=1.3
- Marisabel
- · Replies 4 ·
Absorption Length of Aluminium for Thermal Neutrons
- says
- · Replies 15 ·
Kinetic Theory of Gases- no. of collisions
- erisedk
- · Replies 3 ·
Calculating Pressure at High Altitudes Using Air Density and Temperature
- kent davidge
- · Replies 2 ·
Tension, centrifugal force, two objects rotating
- physics user1
- · Replies 4 ·
Finding position of particle with time-varying acceleration
- Kernul
- · Replies 14 ·
What is the acceleration and velocity of a falling chain on a cylinder?
- manosairfoil
- · Replies 6 ·
Sound waves in carbon dioxide -- I think book answer is *wrong*
- Barclay
- · Replies 24 ·
Rolling Bottle: Calculating Acceleration of Center of Mass
- Sonntag
- · Replies 2 ·
Find launch angles for projectile through wall opening 40 m away
- M.Samad-CNAQ-
- · Replies 25 ·
Find tensions and angle for 120-N board with suspended weight
- Felix Gana
- · Replies 3 ·
Finding q1 and q2 when electric field at point D is zero
- WeiLoong
- · Replies 8 ·
Phasor algebra in AC circuit analysis
- Titan97
- · Replies 1 ·
Topic for physicasor mathematical project
- Kalenz
- · Replies 1 ·
Relativistic Centre of Momentum Frame
- xoxomae
- · Replies 4 ·
How Does Pulling the String Affect the Speed of a Ball in Circular Motion?
- Koko$
- · Replies 4 ·
Finding the overall uncertainty
- Ch3m_
- · Replies 3 ·
Drag force and power for 9 mm antenna at 100 km/h
- Nurah
- · Replies 3 ·
Upthrust/ how does the weight of a sphere change in water?
- C0balt
- · Replies 5 ·
How to determine a value of force for equilibrium
- Strontium90
- · Replies 2 ·
How Does Bullet Velocity Change After Passing Through Different Block Widths?
- Verrine
- · Replies 16 ·
A wood block is launched up a ramp
- kenway
- · Replies 21 ·
How much energy is lost due to friction?
- GiantSheeps
- · Replies 19 ·
A problem regarding gravity
- CherryWine
- · Replies 6 ·
Kleppner Power and Kinetic Energy Conceptual Questions
- RubinLicht
- · Replies 4 ·
Calculate the muzzle velocity and the time required between lanuches
- Singinginshower
- · Replies 2 ·
Electrostatics -- the case of a charged cylinder
- Pablo3
- · Replies 4 ·
Acceleration of wedge due to normal force exerted by block?
- ajay.05
- · Replies 13 ·
Change of energy loss in driven oscillations
- ngc2024
- · Replies 2 ·
Why can't I use i²R with equivalent resistance in parallel circuits?
- physics user1
- · Replies 17 ·
How does momentum conservation apply to a system with two interacting objects?
- C0balt
- · Replies 7 ·
How to calculate the equivalent resistance using wye delta ?
- Julian102
- · Replies 14 ·
Find wavelength, frequency and speed of a wave,
- selma
- · Replies 5 ·
How Do You Solve a Double Atwood's Machine Problem?
- struggles
- · Replies 3 ·
How to find the Eg of an object thrown at an angle?
- nilfound
- · Replies 7 ·
Variable angular acceleration and velocity
- REVIANNA
- · Replies 15 ·
Photon frequency from relativistic decay with momentum conservation
- Physgeek64
- · Replies 10 ·
Location of Mass in an Oscillator with Time-Varying Force and T->0
- nashed
- · Replies 14 ·
Potential in case of concentric shells
- gracy
- · Replies 82 ·
Equilibrium Tension Along a Curved String
- Raghav anand
- · Replies 3 ·
Calculating Pump Power for Steady Water Flow: Work-Energy Theorem Approach
- Addem
- · Replies 3 ·
Rolling without slipping magnitude
- REVIANNA
- · Replies 7 ·
Shannon entropy of logic gate output.
- Dazed&Confused
- · Replies 4 ·
Magnetic field outside the solenoid
- XXZZ
- · Replies 21 ·
Finding maximum velocity at point D on a roller coaster
- Rumplestiltskin
- · Replies 19 ·
Microwave interference from water reflection across a lake
- Richard L
- · Replies 1 ·
Doppler effect for accelerated source
- Patrikp
- · Replies 11 ·
Why Is Calculating Rope Tension with Angles Confusing?
- druidwoody
- · Replies 2 ·
Conceptual question, fluid pressure in a barometer
- Addem
- · Replies 2 ·
Pendulum with a spring attached
- physiccool78
- · Replies 1 ·
Work done by gravity on fluid in u-tube.
- Addem
- · Replies 1 ·
Max Displacement of 6.0 kg Object: 0.27 m?
- RubinLicht
- · Replies 3 ·
Calculating impedance in op-amp circuit with resistors and capacitor
- Pablo3
- · Replies 6 ·
Induced Charges on Uncharged Conductors
- Vibhor
- · Replies 9 ·
Given two waves, find phase angle
- JavierOlivares
- · Replies 4 ·
Railroad handcar momentum: object thrown sideways, backward, and into car
- David112234
- · Replies 8 ·
What is the new temperature of the system?
- kent davidge
- · Replies 7 ·
Problem regarding projectile motion on a inclined plane
- CherryWine
- · Replies 8 ·
Using series in a 2D kinematics problem
- CherryWine
- · Replies 5 ·
How Do You Calculate Minimum and Maximum Velocities in Projectile Motion?
- CherryWine
- · Replies 7 ·
Discrepancy with Toricellis equation in a 2D kinematics prob
- CherryWine
- · Replies 2 ·
Gravitational potential energy of a cylinder to a particle
- Gian Lukmana
- · Replies 6 ·
Maximum Positive Coordinate Reached by a Particle
- Satonam
- · Replies 2 ·
Projectile Motion Practice Problems | Calculate Distance and Maximum Height
- Rumplestiltskin
- · Replies 8 ·
Finding fall time and height when James is halfway down 1 second before impact
- Creaver
- · Replies 13 ·
Hydrostatic forces on a submerged curved surface question
- abuh11
- · Replies 24 ·
Change in frequency with a small change in tension (guitar string)
- kent davidge
- · Replies 4 ·
Speeds regarding 2D inelastic collision
- Negus
- · Replies 8 ·
What Angle Should the Goose Fly to Head Directly Southward?
- David112234
- · Replies 8 ·
Density of a liquid above a column of water
- takando12
- · Replies 4 ·
Capacity with 2 R in RC circuit
- potatowhisperer
- · Replies 3 ·
Calculating the Cross Section for Rutherford Scattering
- says
- · Replies 18 ·
Acceleration of two blocks with applied force vs pulley system
- Alexstrasza
- · Replies 5 ·
Balancing magnetic forces on rods
- Will Freedic
- · Replies 4 ·
Solving for time given a messy displacement equation
- Rations
- · Replies 4 ·
How Does a Skydiver's Velocity Change with Distance After Parachute Deployment?
- Will Freedic
- · Replies 6 ·
Volume Charge Density of Proton Beam
- muonneutrino91
- · Replies 2 ·
Pressure inside a soap bubble just under surface
- takando12
- · Replies 3 ·
Angle of Refraction through a Prism
- Jason S
- · Replies 1 ·
Rectilinear motion of two attracting masses
- H. Leone
- · Replies 14 ·
Confusion about how to identify lever arm
- Chozen Juan
- · Replies 4 ·
Why does a cylinder on a frictionless table rotate when pulled by a string?
- Muath Mushtaha
- · Replies 3 ·
How many revolutions does a wheel make at 2.50 rad/s for 30 seconds?
- DTK
- · Replies 18 ·
Is the correct term 'laterally inverted' or 'laterally inversed'?
- Barclay
- · Replies 13 ·
What is the torque needed to lift a weight with a lever?
- Priyadarshini
- · Replies 17 ·
Is it possible to decompose a vector into non-perpendicular components?
- physics user1
- · Replies 2 ·
Static Friction of a Car's Tyre
- Jimmy87
- · Replies 33 ·