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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Elastic collision heavy particle problem
- Abu
- · Replies 12 ·
Kinetic energy of recoil atom in the photoelectric effect
- thatguy145
- · Replies 1 ·
How Do Sign Conventions Affect Focal Length Calculations?
- Noreturn
- · Replies 8 ·
Breaking Distance of a Car Traveling on an Inclined Plane
- Emma Hughes
- · Replies 2 ·
Angular momentum conservation point for impulse on a rod
- ubergewehr273
- · Replies 8 ·
Specific heat capacity, Q = mcθ
- a129
- · Replies 3 ·
Find the period of radial oscillation through effective potentials
- Richardbryant
- · Replies 1 ·
About moving through the air and Newton´s 3rd law
- Javier Mont
- · Replies 11 ·
What is the total displacement?
- ilittlepotato
- · Replies 2 ·
Mass bouncing on spring after heavier mass removed
- Abu
- · Replies 14 ·
Kinetic energy of a compound system (atwood machine)
- Davyd Sadovskyy
- · Replies 1 ·
Finding the decrease in potential energy of atwood machine
- Davyd Sadovskyy
- · Replies 1 ·
Starting height of marble rolling around a loop the loop
- Jamie_Pi
- · Replies 12 ·
How to understand linear momentum?
- Javier Mont
- · Replies 4 ·
Find the magnitude of the electromagnetic force on electron?
- prokaryote
- · Replies 3 ·
Find the total electric charge in a spherical shell
- Physics Dad
- · Replies 16 ·
Normal force for stacked objects in a moving elevator
- marcusesses
- · Replies 5 ·
Intuition for why escape velocity doesn't depend on angle
- RubinLicht
- · Replies 9 ·
Pressure caused by beam of molecular oxygen
- TheGreatExplainer
- · Replies 1 ·
How does hanging mass affect revolution period in a centripetal force lab?
- Richer Su
- · Replies 6 ·
Calculating Forces and Torques in a Basic Equilibrium Problem
- Matt Armstrong
- · Replies 4 ·
Collision Angle for Two Particles with Constant Velocity and Acceleration
- Christoffelsymbol100
- · Replies 3 ·
Understanding Net Force Calculation in Physics Problem #93?
- Rijad Hadzic
- · Replies 14 ·
Inelastic collision, determine ratio KEf/KEi
- Anonymous123451234
- · Replies 3 ·
Transistor circuit: current in R1 when on, output voltage when off
- Mohamed Abdul
- · Replies 4 ·
Elastic collision - Trigonometry equations
- Dandi Froind
- · Replies 4 ·
How to find coefficient of friction *Without* mass?
- APphysicsSenior
- · Replies 3 ·
How do you find the current going through a weird circuit?
- giantf
- · Replies 4 ·
50 kg box with friction: finding acceleration after it starts sliding
- APphysicsSenior
- · Replies 1 ·
Why does a charged particle move in a circle when analysis suggests a straight line?
- Jahnavi
- · Replies 21 ·
How much power must a refrigerator draw to remove 300W of heat leak?
- patrickmoloney
- · Replies 2 ·
Can F_1,2 Be Defined Using r-hat_2,1 Instead of r-hat_1,2?
- Ryan McParlan
- · Replies 1 ·
How does angular momentum conservation apply to a cylinder rolling up a step?
- ashankrudola
- · Replies 48 ·
Voltmeter Ammeter and percentage error in R
- Jahnavi
- · Replies 28 ·
Questions about Subsolar Temperature
- MathIsFun
- · Replies 1 ·
Power of radiation received by a surface
- Jahnavi
- · Replies 10 ·
Why Is the Calculated Angular Momentum of the Pucks Zero?
- Joshua A
- · Replies 5 ·
How to Derive Impedance in an LCR Circuit at Various Frequencies?
- Blue Kangaroo
- · Replies 5 ·
[Nuclear Physics] photoelectric peak
- CarmenGonzalez
- · Replies 1 ·
Acceleration and Gravity with Circular Motion
- Joshua A
- · Replies 9 ·
Expectation of energy for a wave function
- thomas19981
- · Replies 13 ·
Magnetic field above the center of a square current loop
- astrocytosis
- · Replies 5 ·
Finding potential at center of sphere with charge density ρ = βr
- Neolight
- · Replies 5 ·
Velocity of a slider in magnetic field
- Jahnavi
- · Replies 18 ·
Boyle's law pressure calculation
- Daan van Driel
- · Replies 3 ·
Wrong assumptions in Gibbs free energy calculation for water heating
- WWCY
- · Replies 6 ·
How to Solve for T in an Equilibrium Problem?
- Ashley1nOnly
- · Replies 2 ·
Finding how long it takes for a_t to equal a_c
- klm_spitfire
- · Replies 3 ·
Minimum spring force required to keep a car level
- at570
- · Replies 34 ·
Example in chapter: Gravitation
- EngMan
- · Replies 3 ·
Radial force on charged particle in beam of positive ions
- astrocytosis
- · Replies 12 ·
A system comprising blocks, a light frictionless pulley, and
- maestro3000
- · Replies 6 ·
Conservation of Energy and projectile motion
- vlmstudent
- · Replies 3 ·
Finding click frequency when echoes coincide with new clicks
- CrazyNeutrino
- · Replies 3 ·
Calculating Work and Change in Thermal Energy
- alyssad
- · Replies 2 ·
Monkey and hunter - forces, vectors
- mgsk
- · Replies 8 ·
Displacement of Center of Mass Problem
- halo168
- · Replies 3 ·
Electric potential of a dipole moment
- Leporad
- · Replies 10 ·
Finding experimental Centripetal force from F=4pi^2rM/T^2
- HexRei
- · Replies 10 ·
Waves and Vibrations -- Vector Diagram
- Blue Kangaroo
- · Replies 23 ·
Coefficient of friction for rubber on wood
- LESLEY
- · Replies 4 ·
Underground cable with electrical short
- carlyn medona
- · Replies 1 ·
Tension Ratio in a Uniformly Distributed Rope System
- Poetria
- · Replies 11 ·
Transformers and Electromagnetism
- mortymoose
- · Replies 3 ·
Phase and Line current in 3 phase circuits
- Cocoleia
- · Replies 5 ·
Finding the Magnetic Field Due to a Wire stretching from Infinity to 0
- B3NR4Y
- · Replies 16 ·
3 phase Delta / Star : Line or Phase?
- Cocoleia
- · Replies 1 ·
What is the direction of P relative to A?
- EastWindBreaks
- · Replies 7 ·
Radius and centripetal relation
- SUSUSUSUSUSUSUSU
- · Replies 4 ·
Rotational Inertia and Angular Momentum
- ScreamingIntoTheVoid
- · Replies 2 ·
Angular Momentum of a Ball at Half Height
- ScreamingIntoTheVoid
- · Replies 9 ·
Springs and Splitting Mass Concept Confusion
- snowcrystal42
- · Replies 1 ·
Questions involving airflow and pressure around a car
- Matt Poirier
- · Replies 21 ·
Relating surface and linear polarization charge density in a coaxial cable
- Granger
- · Replies 10 ·
Flux induced in a circular loop
- meaghan
- · Replies 5 ·
Finding magnetic force direction using Fleming's left hand rule
- Devs
- · Replies 4 ·
Solenoid with current carrying wire inside
- meaghan
- · Replies 3 ·
How Does Changing EMF Affect Current in an Inductor?
- Vibhor
- · Replies 27 ·
Finding work and the Change in Thermal Energy
- alyssad
- · Replies 5 ·
How Does Gravity Affect Kinetic Energy in a Glider System?
- aron silvester
- · Replies 3 ·
Derivation of an expression for centripetal acceleration
- Sophieg
- · Replies 3 ·
Magnetic Force direction on a charged particle moving parallel to a wire
- Devs
- · Replies 3 ·
Mean life of a mixture of two radioactive species with different decay constants
- ubergewehr273
- · Replies 5 ·
QM: Difference between these Initial Wavefunctions
- WWCY
- · Replies 2 ·
How to calculate the force of a charge through its kinetic Energy?
- MichaelC960
- · Replies 5 ·
Launch angle to hit moose 500 m away in a depression
- EggsBenedict1
- · Replies 5 ·
Will a block slide in a moving lift with equilibrium?
- ProfManas
- · Replies 4 ·
What is the tension along wire 1 after wire 2 is cut?
- Bestfrog
- · Replies 10 ·
The energy stored in a system of capacitors (only)
- Roxas ross
- · Replies 1 ·
Work In Circular Motion With Tension
- Lori
- · Replies 17 ·
Distance from wall of collision
- hendrix7
- · Replies 2 ·
What Defines Induced EMF in Circuit Analysis?
- Amplitude
- · Replies 88 ·
Calculate the probability that the particle's x coordinate
- Frankenstein19
- · Replies 3 ·
Spring launching 250g block up 10° frictionless incline
- CrazyCatMom
- · Replies 15 ·
Distance traveled during the fourth second of free fall
- SUSUSUSUSUSUSUSU
- · Replies 7 ·
Magnetic field produced at point P
- Rijad Hadzic
- · Replies 4 ·
Determining the Poles of a Magnet Using a Hall Probe and Lab Equipment
- waley
- · Replies 2 ·
Varying mass- finding centripetal force
- HexRei
- · Replies 5 ·