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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Changing galvanometer reading in the secondary coil of a transformer?
- pkc111
- · Replies 6 ·
Non-interacting gas in homogeneous gravitational field
- AndreasC
- · Replies 16 ·
Increase in conductivity of intrisic germanium with temperature
- PhysicsTest
- · Replies 14 ·
Pressure in a bomb calorimeter at the moment of combustion
- Seibtsantos
- · Replies 1 ·
Angular momentum of orbit from orbit parameters and mass of sun
- Kaguro
- · Replies 3 ·
Lorentz transformation of multiple events into one frame of observation
- Oranginayo
- · Replies 27 ·
Gauss' Law: Understand How to Calculate Flux
- sayuri2009
- · Replies 1 ·
Number of Steps on a Stationary Escalator with Varying Person Speeds
- tomas krchnak
- · Replies 4 ·
Partition function of a particle with two harmonic oscillators
- mjmnr3
- · Replies 2 ·
Question regarding time period and distances of a comet
- Kaguro
- · Replies 8 ·
Action variables for the Kepler problem
- etotheipi
- · Replies 2 ·
What happens when the maximum is exceeded in the Mass-Spring System?
- Vigorous
- · Replies 27 ·
Find the velocity and acceleration of a pulley in a mass-spring system
- mattlfang
- · Replies 14 ·
Potential difference across the ends of a solenoid
- songoku
- · Replies 14 ·
How Do You Calculate 4-Acceleration in Schwarzschild Coordinates?
- etotheipi
- · Replies 4 ·
Tension connecting two collinear rotating objects
- songoku
- · Replies 2 ·
Why Is Torque Calculated Differently in Rotating Hoop Problems?
- Leo Liu
- · Replies 25 ·
Motion in one dimension -- Experiments with a Hot Wheels car rolling down a ramp
- chucho11028
- · Replies 12 ·
The angle of tilt of a gyroscope
- Leo Liu
- · Replies 9 ·
Force Exerted by fluid on a Bend, an Enlargement, or a Contraction
- sandmanvgc
- · Replies 2 ·
RC circuit using complex numbers
- Kaguro
- · Replies 12 ·
Square Root Practice: Multiplying by 1000NM/kJ
- sandmanvgc
- · Replies 5 ·
Can Mechanical Energy Be Conserved in an Accelerated Frame?
- A13235378
- · Replies 12 ·
Torque and couples when one pivot is pulled from a beam
- warhammer
- · Replies 6 ·
Sum of oscillating frequency and angular velocity
- Leo Liu
- · Replies 11 ·
Find the tension of a rope with a mass and spring attached
- valentina
- · Replies 4 ·
Finding the number of free electrons
- PhysicsTest
- · Replies 5 ·
Does moving a coil in an electromagnet create current?
- Mar47389595
- · Replies 2 ·
A charged particle entering a magnetic field -- find the position
- namo99
- · Replies 1 ·
Why does a pivoted rod not rotate about its contact point when released?
- NTesla
- · Replies 40 ·
Temperature Distribution of Current Carrying Wire in Matlab
- patric44
- · Replies 1 ·
Why is angular momentum measured at a non inertial CoM conserved?
- Leo Liu
- · Replies 7 ·
Gas in mercury manometer, finding its normal volume
- plain stupid
- · Replies 2 ·
Mercury barometer with a small amount of air
- plain stupid
- · Replies 7 ·
Orbit determination from radar readings of a satellite in orbit
- bwitt
- · Replies 4 ·
Hooke's law does not apply when there is friction, right?
- phase0
- · Replies 18 ·
Find the power needed to accelerate this elevator downward
- phase0
- · Replies 4 ·
Finding the net elongation in a rod due to its own weight
- Hamiltonian
- · Replies 13 ·
A classic string and pulley problem
- sahilmm15
- · Replies 15 ·
General Query on Archimedes' Principle
- TomK
- · Replies 14 ·
Calculating Reynolds number for wind turbine blade flow
- t0mm02
- · Replies 16 ·
Pendulum hung from the ceiling of a train
- brotherbobby
- · Replies 18 ·
Spherical charge distribution to generate this E-field
- Mohomad
- · Replies 13 ·
Does change in 'g' affect frequency of mass spring system?
- tahmidbro
- · Replies 4 ·
Quantum mechanics - several constant potentials
- Eitan Levy
- · Replies 7 ·
To find the parameters of velocity in an electric field
- PhysicsTest
- · Replies 6 ·
Relativistic Mass in this fission decay
- mtuck
- · Replies 3 ·
Finding where my rolling ball moment of inertia calculation went wrong
- roadrunner1994
- · Replies 8 ·
Finding weights in a pulley system using virtual work
- lowea001
- · Replies 12 ·
Why do bar magnets have zero velocity after collision?
- TomK
- · Replies 4 ·
Moments Question (ENGAA 2019) -- Cable and Winch Lifting a Drawbridge
- TomK
- · Replies 17 ·
How much weight can the balloon lift?
- Funny_N_Cool
- · Replies 13 ·
Advice needed: Astronomy radiation problem
- snowflakita78
- · Replies 1 ·
Find the Center of Mass for each of these figures
- rPex
- · Replies 8 ·
Induced voltage difference in a magnetic field
- waazwag
- · Replies 1 ·
Can someone tell me which formula to use here? (time to boil water)
- yuheng_wu
- · Replies 1 ·
Absolute vs gauge pressure at the bottom of a liquid
- yuheng_wu
- · Replies 6 ·
Law of Conservation of Energy Problem (kicking a soccer ball)
- orangegalaxies
- · Replies 4 ·
Amplifier circuit with 5 resistors for gain of 10 between two inputs
- Jason-Li
- · Replies 10 ·
Should the wire's weight create a reaction force on the post?
- Engineering_stud
- · Replies 9 ·
Applying least squares to measurement of nuclei masses and Q-value
- schniefen
- · Replies 1 ·
How Can I Improve DVM Accuracy in Physics Problems?
- blooden
- · Replies 1 ·
Gravitational Potential Energy on an Incline
- Travis Enigma
- · Replies 1 ·
Why Does Increasing G in a Control Loop Cause Vo/Vi to Approach Unity?
- Jason-Li
- · Replies 4 ·
What is the instantaneous potential?
- PhysicsTest
- · Replies 19 ·
What is the recoil energy of a nucleus produced in its first energy level?
- Adams2020
- · Replies 1 ·
Alice and Bob Flyby with Simultaneous Waving
- gtguhoij
- · Replies 1 ·
Mass on an Incline with Spring Attached
- whoareyou
- · Replies 36 ·
Find the equilibrium position of this piston
- utkarshakash
- · Replies 58 ·
Car traveling west at 460 m/s at equator in inertial and rotating frames
- John Mcrain
- · Replies 126 ·
Velocity of wind based on the shape of a smoke trail
- weirdoguy
- · Replies 16 ·
Normal force on a rod by the rim of a bowl
- songoku
- · Replies 5 ·
Cylindrical container with a piston
- mavidias
- · Replies 2 ·
Heat engine efficiency and work output
- mavidias
- · Replies 1 ·
Potential inside a concentric sphere
- LCSphysicist
- · Replies 1 ·
Time of flight for projectile with non-zero initial velocity
- so_gr_lo
- · Replies 2 ·
Decrease of Solar radius per year using Virial Theorem
- CharlesDamle
- · Replies 11 ·
Force at the end of a Rod at rest on an inclined surface
- so_gr_lo
- · Replies 14 ·
Find the function of velocity of a person that accelerates to a constant v
- diazdaiz
- · Replies 3 ·
Calculating moments about a support point
- Shaye
- · Replies 7 ·
Tension in a rotating ring under gravity
- ricles
- · Replies 19 ·
Electric Field of two line charges
- badluckmath
- · Replies 3 ·
Physics -- deriving Planck's constant
- YungSung
- · Replies 6 ·
Imaging resolution for a microscope and eye
- StillAnotherDave
- · Replies 5 ·
How to Find Linear Acceleration Without Cylinder Radius?
- ricles
- · Replies 2 ·
Thermodynamics pressure-temperature-volume problems
- Termodinamica
- · Replies 5 ·
Why is my refrigeration cycle efficiency over 100% with R-22?
- yecko
- · Replies 13 ·
Velocity from spring pushing on 2 masses
- JoeyBob
- · Replies 3 ·
Determining non-conserved work from a collision
- JoeyBob
- · Replies 3 ·
Determining the accelerations -- two masses connected by a spring
- JoeyBob
- · Replies 18 ·
Static friction equilibrium with tension at an angle
- JoeyBob
- · Replies 6 ·
Mass dropped onto spring compression using energy conservation
- JoeyBob
- · Replies 9 ·
Elastic collision between two balls with different masses
- kshitij
- · Replies 8 ·
Physics Graph Word Problem -- Motion of a person skiing down a slope
- Lui4
- · Replies 14 ·
Properties of materials like rubber bands
- shk
- · Replies 17 ·
A sudden change in the depth of delta function potential well
- Mazhar12
- · Replies 1 ·
Projectile motion: finding time when object reaches specific height
- Lui4
- · Replies 6 ·
Force extension graph for copper wire
- shk
- · Replies 1 ·
Two rotating masses balanced by a third mass (rotational dynamics)
- Eirik
- · Replies 4 ·
Time in moving frame (v=0.6c, distance 3×10^8 m)
- gtguhoij
- · Replies 24 ·