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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Approximations used in solving for the electric field
- AeroKaro
- · Replies 1 ·
Calculate the total stopping distance of the car
- eefje
- · Replies 7 ·
Problem related to vector diagram. Thanks.
- Help help
- · Replies 9 ·
The minimum applied force before an object slips off wall
- blueray101
- · Replies 4 ·
Circuit question: Find size and direction of current at P
- Faris A
- · Replies 3 ·
Calculate the change of temperature in terms of T
- Sam J
- · Replies 4 ·
Finding position coordinates from given force vector
- Sreekuttan Jayakumar
- · Replies 1 ·
Explanation for Non-Inertial Frames of Reference
- Balsam
- · Replies 3 ·
Solve Tension in Moving Speedboat w/o Mass?
- Balsam
- · Replies 3 ·
Physics olympiad problem -- struggling with polar coordinates
- cr7einstein
- · Replies 37 ·
Fleming left hand rule or right hand grip rule?
- Help help
- · Replies 5 ·
Friction losses due to expansion vs losses due to contract
- foo9008
- · Replies 2 ·
Calculate acceleration and kinetic friction coefficient
- fission
- · Replies 15 ·
How to Solve HX Equation in Physics?
- foo9008
- · Replies 7 ·
What does current density mean?
- AeroKaro
- · Replies 2 ·
HR-diagram: Describing the sun's life cycle
- MarieO
- · Replies 2 ·
Friction loss is significant in short pipe
- foo9008
- · Replies 9 ·
Mass hanging in a boxcar accelerating
- brake4country
- · Replies 2 ·
Momentum and percent kinetic energy loss
- physicsstudent30192
- · Replies 3 ·
Elastic collision of billiard balls with 30° deflection
- Enharmonics
- · Replies 1 ·
Distance from potential difference
- Sho Kano
- · Replies 8 ·
Determine whether the object is floating or not
- thumn
- · Replies 2 ·
What forces causes the top book to accelerate horizontally?
- Balsam
- · Replies 5 ·
Calculating Electrical Force on Alpha Particle Near Gold Nucleus
- komarxian
- · Replies 2 ·
How Does Process B Work If PV Is Constant and Internal Energy Changes?
- bartersnarter
- · Replies 3 ·
Velocity of water in water hose
- foo9008
- · Replies 3 ·
How to graph a linear relationship between T and v of sound?
- Banker
- · Replies 14 ·
Non-inertial Frames of Reference
- Balsam
- · Replies 44 ·
Work done by crane lifting a 425 kg bar with 1.8 m/s² acceleration
- Le_Anthony
- · Replies 12 ·
Mass propelled backwards in 1 second?
- ultralightbeam
- · Replies 18 ·
Is v = 11,2km/s enough to wrest away from the Sun's gravitation
- wiegetz
- · Replies 9 ·
What Frequencies Emerge in a Sampled Signal of Mixed Sine Waves?
- skrat
- · Replies 19 ·
How Do You Calculate Impedance in an RLC Circuit at 3000 Hz?
- ReidMerrill
- · Replies 9 ·
Elastic collision between 0.060 kg and 0.090 kg tennis balls
- Of Mike and Men
- · Replies 2 ·
Adiabatic relationship for P and V using Maxwell relations
- grandpa2390
- · Replies 1 ·
Eigenvalues of a string with fixed ends and a mass in the middle
- Frank93
- · Replies 2 ·
Why find voltage of AB in parallel circuit when voltage is constant
- nfcfox
- · Replies 10 ·
What is the correction to the wavelength of an emitted photon due to recoil?
- kent davidge
- · Replies 4 ·
Why is atmospheric pressure used for a closed gas tank?
- foo9008
- · Replies 9 ·
Loss of head at submerged discharge
- foo9008
- · Replies 3 ·
Average Speed Calculation: Why 2x266.67 Doesn't Work
- Janiceleong26
- · Replies 2 ·
Solving For Rolling Friction in Bike Tires
- grv413
- · Replies 3 ·
Small focal spot in X-ray imaging
- BobP
- · Replies 11 ·
Express dH(V,T) as a state function
- grandpa2390
- · Replies 12 ·
Uncertainty -- particle through single slit
- limper
- · Replies 1 ·
Calculating Work Done by a Spring
- Le_Anthony
- · Replies 2 ·
Find the Units of the Torsional Constant for a Balance Wheel
- Flinze
- · Replies 1 ·
Deriving Capacitor Voltage for a Discharging Capacitor
- Potatochip911
- · Replies 5 ·
Why are light bulbs and diodes linear or non-linear elements?
- kamhogo
- · Replies 12 ·
Instantaneous Power calculation
- Le_Anthony
- · Replies 5 ·
Finding the length of a string given f, F, λ and m
- romakarol
- · Replies 4 ·
What is the relationship between R1 and R5 in a Thevenin's theorem problem?
- Potatochip911
- · Replies 2 ·
Peak Voltage across a capacitor.
- ReidMerrill
- · Replies 1 ·
Capacitor Peak Current and Voltage in an AC Circuit
- ReidMerrill
- · Replies 2 ·
Sphere rolling with slipping on a movable platform
- Alkaid
- · Replies 1 ·
How to find if equilibrium points of a force is un/stable?
- Blockade
- · Replies 3 ·
What Does Head in Fluid Dynamics Refer To?
- foo9008
- · Replies 26 ·
Struggling with DC Circuit Combinations?
- cvc121
- · Replies 2 ·
Electric dipole antenna voltage
- loki4000
- · Replies 1 ·
Calculating Instantaneous Current in an Inductive Circuit with Delayed Switches
- DevonZA
- · Replies 27 ·
Why are pressures equal at inlet and outlet in a bent pipe with elevation difference?
- foo9008
- · Replies 7 ·
Understanding the Dynamics of Acceleration in the Wedge Problem
- vaibhav garg
- · Replies 7 ·
Question regarding angular frequency of a SHM
- Janiceleong26
- · Replies 8 ·
Why is P1 not equal to Patm in a nozzle?
- foo9008
- · Replies 10 ·
Why is neutron-induced uranium fission possible?
- Janiceleong26
- · Replies 4 ·
What Is the Stopping Distance of a Mobile Machine Pushed at 1.2 m/s?
- Johny Prime
- · Replies 12 ·
Simplifying output for a XOR gate using Boolean Algebra
- Potatochip911
- · Replies 3 ·
Kinetic energy of the photoelectrons
- manaXmizery
- · Replies 3 ·
What faults I have made in the following mathematical soluti
- Nousher Ahmed
- · Replies 1 ·
Kinetic Energy v. Time Graph for Freefall
- Asleky
- · Replies 4 ·
Calculating Power Requirements for an Escalator
- Le_Anthony
- · Replies 2 ·
Wire loop entering magnetic field: induced current direction
- mick5000x
- · Replies 5 ·
Why do two masses on a compressed spring rise to the same height?
- Sho Kano
- · Replies 7 ·
Calculating Work Using a Force vs Distance Graph
- Le_Anthony
- · Replies 2 ·
Calculating the Normal Force on an Inclined Flat Plate Struck by a Jet of Water
- foo9008
- · Replies 6 ·
Block vs spool pulled across frictionless surface: acceleration, work, and kinetic energy
- Zach_Sch
- · Replies 3 ·
Why Did the Author Ignore Certain Terms in the Bent Pipe Pressure Equation?
- foo9008
- · Replies 17 ·
Angular Momentum and Conservation of Angular Motion
- Aarron Anderson
- · Replies 1 ·
Smallest duration pulse frequency
- Polkadot
- · Replies 11 ·
Conservation of Energy: Finding the Speed of a Falling Ball
- sireh
- · Replies 1 ·
Compute the magnitude of the current density
- Sho Kano
- · Replies 11 ·
The Pressure Distribution in a Narrowing Tube with Increasing Fluid Velocity
- Johny Prime
- · Replies 10 ·
Finding currents using the junction and loop rules
- Robb
- · Replies 16 ·
Maximum Kinetic Energy of Photoelectrons from Irradiated Hydrogen Atoms
- kent davidge
- · Replies 2 ·
Calculating Kinetic Energy of Photoelectrons in Ultraviolet Metal Interaction
- JakeP
- · Replies 6 ·
Finding (∂H/∂U)_P from H = U+PV using thermodynamic relations
- grandpa2390
- · Replies 19 ·
Thermodynamics Particles in Water
- dcrisci
- · Replies 1 ·
How to interpret this circuit configuration? (Sensor bridge)
- Benighted
- · Replies 7 ·
Distance between hydrogen and carbon in methane molecule
- crastinus
- · Replies 6 ·
Water flowing uphill: does pressure at inlet equal outlet?
- foo9008
- · Replies 2 ·
Kinetic energy object vs opposing KE object?
- normal_force
- · Replies 53 ·
How many photons are there in a 1 m long He-Ne laser beam?
- manaXmizery
- · Replies 1 ·
Finding Internal Resistance of a Battery
- Potatochip911
- · Replies 18 ·
Transformer current theory problem
- Ange98
- · Replies 2 ·
Collisions Impulse; Balls dropped from same height.
- AdkinsJr
- · Replies 2 ·
A basic conservation of energy question
- unified
- · Replies 10 ·
Motion of mass connected to a spring at constant velocity
- Holmez2_718
- · Replies 2 ·
Find I through one of three resistors in a 3-battery circuit
- kamhogo
- · Replies 6 ·
Why is length independent of young modulus ?
- Ysondh
- · Replies 2 ·
Checking my series and parallel circuit network solutions
- cvc121
- · Replies 1 ·