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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Determining mass of a weight on a three spring scale setup
- merricksdad
- · Replies 14 ·
Worldlines and spacetime diagrams
- alc95
- · Replies 4 ·
Evaluating my experiment; kettle water boiling efficiency
- Omar H
- · Replies 1 ·
How do I properly set up this F.B.D.?
- Vitani11
- · Replies 1 ·
Can a Tiger Outrun a Lion in a 100 Meter Dash?
- physicaled
- · Replies 1 ·
Understanding Forces in a Whirling Tube Filled with Liquid
- decentfellow
- · Replies 20 ·
Can a cyclist stop before a log 42m away with friction coefficient 0.36?
- vinamas
- · Replies 1 ·
Flux density expressions at solenoid centre
- moenste
- · Replies 19 ·
Distance of compass to wire based on magnetic field strength
- songoku
- · Replies 3 ·
Calculating velocity using maxwell distribution
- kingkong23
- · Replies 26 ·
Plotting force vs acceleration for Newton's second law investigation
- PhysicsOfLearning
- · Replies 2 ·
What is the Net Force on q1 in a Rectangle of Charges?
- Cimino54
- · Replies 4 ·
How to calculate work done on spring from object on slope?
- Eclair_de_XII
- · Replies 11 ·
Calculating Work Done on a Particle Using Basic Formulas
- Jrlinton
- · Replies 5 ·
How to Calculate Capillary Rise on the ISS
- yung_flower
- · Replies 1 ·
Is My Calculation of Kinetic Energy Change Correct?
- Jrlinton
- · Replies 6 ·
Finding the voltage at a radius of a cylinder
- Blockade
- · Replies 1 ·
Figuring Out if A Force Field is Conservative or Not
- Summer95
- · Replies 1 ·
Moment about a point in an incline plane
- Robb
- · Replies 1 ·
Determining work of a 3 particle system
- Dusty912
- · Replies 1 ·
Finding Touchdown Point Distance on a Slope with a Circular Arc and Ramp Launch
- BrainMan
- · Replies 4 ·
Deriving error propagation for simple pendulum gravitational acceleration
- tdog13
- · Replies 13 ·
Two bodies on elastic spring system
- zvonecar13
- · Replies 1 ·
Surface Charge Density, Polarization
- Destroxia
- · Replies 2 ·
How quickly are you moving relative to the ground?
- emily081715
- · Replies 1 ·
Determine the location of the center of mass of spheres
- emily081715
- · Replies 3 ·
Find the centre of mass of the system?
- emily081715
- · Replies 23 ·
Trouble w/ setting up the equations for capacitive circuits
- Blockade
- · Replies 3 ·
Coils arrangement so the hotplate operates at 3 diff. powers
- moenste
- · Replies 25 ·
Rotation due to center of gravity
- JustAnotherNewton
- · Replies 4 ·
Inclined plane problem strange result
- kubaanglin
- · Replies 3 ·
Distance contraction vs time dilation for spaceship to distant star
- member 545369
- · Replies 1 ·
Simple harmonic motion calculations from doubling the mass.
- Wes Ellgass
- · Replies 1 ·
Forces of motion, Newton 2nd law
- kidgt23
- · Replies 3 ·
Derivative of Position Vector at Specified Time
- bghommy
- · Replies 1 ·
Aquarium on a train during braking
- ChessEnthusiast
- · Replies 13 ·
Elementary questions about error estimation
- jonjacson
- · Replies 3 ·
What is the ratio of lengths for two vibrating strings with a beat frequency?
- Hamal_Arietis
- · Replies 6 ·
PD across the terminals of two cells
- moenste
- · Replies 34 ·
Why does the second kinematics method give negative displacement?
- Kajan thana
- · Replies 6 ·
Taylor mechanics chap3,problem 4
- kylinsky
- · Replies 1 ·
Moment about a point of a crane
- Robb
- · Replies 18 ·
Bug moving on a turntable rotating with constant omega
- Dustgil
- · Replies 5 ·
How Long to Boil Water with Two Thermophores?
- ChessEnthusiast
- · Replies 14 ·
Newton's Laws - Incline. Do I have the right idea?
- Lauren0619
- · Replies 3 ·
Calculating velocity needed for uniform circular motion?
- Eclair_de_XII
- · Replies 19 ·
A piece of ejecta is thrown up, what is the velocity
- nysnacc
- · Replies 13 ·
Can I post homework answers here for checking?
- Lauren0619
- · Replies 1 ·
Energy conservation with tension
- nysnacc
- · Replies 22 ·
Discharging a capacitor to to charge multiple capacitors
- Biker
- · Replies 9 ·
Internal resistance of the battery and energy transformed
- moenste
- · Replies 14 ·
What is the difference between apparent weight and true weight in elevators?
- AlexandraMarie112
- · Replies 12 ·
Calculating Magnetic Field of Two Coils on a Common Axis
- cranen
- · Replies 11 ·
Batteries, Resistance, Power, Potential, and Current
- NkaujHelp
- · Replies 3 ·
Dumbell problem (conservation of energy)
- terryds
- · Replies 1 ·
Why Does a Lamp Light Up Slowly When Connected with a NTC Thermistor?
- moenste
- · Replies 7 ·
Draw circuit, % increase in the resistance
- moenste
- · Replies 13 ·
Solving Double Slit Homework Qs: Phase Difference & Destructive Interference
- MartinFreeman
- · Replies 13 ·
How a heating element is connected to increase power
- moenste
- · Replies 28 ·
Mass within a box hung from a spring
- Elvis 123456789
- · Replies 2 ·
Clay hitting hinged stick: finding energy loss ratio
- MickeyBlue
- · Replies 4 ·
How to Calculate the Resultant Electric Field from a Line Charge?
- diredragon
- · Replies 2 ·
Acceleration = (Force of boy on sled - Force of friction)/Mass of sled
- kubaanglin
- · Replies 3 ·
Free body diagram of two different objects
- Ehden
- · Replies 19 ·
Determining angular frequency and amplitude for SHM
- Elvis 123456789
- · Replies 6 ·
Fermilab relativity energy problem
- erisedk
- · Replies 1 ·
Moment about a point of a hammer
- Robb
- · Replies 9 ·
Puck on string with hanging mass centripetal force
- sens
- · Replies 4 ·
GZK cutoff energy for cosmic ray protons colliding with CMB photons
- erisedk
- · Replies 1 ·
How do you modify the Bohr model equation for Li++?
- Vitani11
- · Replies 3 ·
Mechanics problem -- 2 masses and a string in motion
- Kumar Singh
- · Replies 19 ·
Finding M1 in a Mass Sliding Problem with an Angle and Friction
- Kpgabriel
- · Replies 4 ·
Projectile motion of arrow shot parallel to ground
- cmkluza
- · Replies 14 ·
Finding x(t) for a particle with force F(x)=kx
- Ryan95
- · Replies 2 ·
Find the mass of a metal block with heat capacity 60JK
- RabbitWho
- · Replies 5 ·
Electric field inside concentric solenoids
- mikeyBoy83
- · Replies 2 ·
Definition of Success problems with projectile motion
- Minestra
- · Replies 4 ·
A box Under Air Pressure -- will it blow?
- MichaelT17
- · Replies 4 ·
Can a beam of light appear to have different trajectories?
- thazard
- · Replies 1 ·
Calculating Standard Error of Mean with Significant Figures
- emeraldskye177
- · Replies 4 ·
Statics Double-Mass Pulley Incline Problem
- physicsman32
- · Replies 2 ·
Resultant Velocities in 2D (Relativistic)
- jeffbarrington
- · Replies 1 ·
Calculating Average Velocity for a Multi-Segment Trip
- Beanie
- · Replies 10 ·
Determining electric field at origin from semicircle charge
- JesseJC
- · Replies 1 ·
Direction of alpha particles/protons from isotope decay
- Vitani11
- · Replies 3 ·
Why does this system of equations lead to inaccurate results?
- k_squared
- · Replies 11 ·
Kinetic Energy and Work/ Work depends on acceleration?
- Any Help
- · Replies 3 ·
Reading of the voltmeter with closed switch
- moenste
- · Replies 25 ·
Resistance of the resistor and voltmeter's readings
- moenste
- · Replies 25 ·
Adding and Subtracting Significant Figures
- cvc121
- · Replies 1 ·
How many M&Ms needed to run at 19 m/s or lift 1 kg?
- BavarianBrew
- · Replies 1 ·
Quantity of heat, phase change of ice to water
- Tafe
- · Replies 7 ·
Finding the point of equilibrium
- Augustine Duran
- · Replies 16 ·
Quadrupole Moment and Potential
- Destroxia
- · Replies 3 ·
What is the speed of 1.4-kg cart right after the separation?
- emily081715
- · Replies 4 ·
Two athletes time compensation
- Andremag12
- · Replies 3 ·
Projectile Motion pea shooter question
- Touran Khan
- · Replies 11 ·
Calculating Relative Velocity: Train vs. Car Collision
- kidgt23
- · Replies 3 ·
Penguin sliding down incline with friction: find the angle
- Any Help
- · Replies 5 ·
Internal resistance of each cell+energy dissipated in 1 min
- moenste
- · Replies 20 ·