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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Rotational inertia - globes connected by a thin rod
- naji0044
- · Replies 9 ·
Derivation of the Emptying Time for a buoyant box to drain
- tjholi
- · Replies 4 ·
Why doesn't the car skid at 4th option if safe velocity is 20 m/s?
- Shivam
- · Replies 7 ·
Relation between mass distribution and angular velocity
- songoku
- · Replies 7 ·
When to use Momentum vs When to use K.E.
- Konner54
- · Replies 10 ·
Coefficient of static friction and banking of roads
- hyunxu
- · Replies 13 ·
Applying Kirchhoff's rules to a magnetic circuit
- jisbon
- · Replies 10 ·
Why is my answer for the rotating wedge problem not matching?
- Prabs3257
- · Replies 7 ·
Calculating Centripetal Acceleration of a Locomotive's Crank Pin
- skyyyyyyyyyyyy
- · Replies 1 ·
Laws of motion and a projectile thrown from an accelerating elevator car
- Prabs3257
- · Replies 13 ·
Would a longer lever require less force to hand pump water? (PHOTO)
- RipleyGallegos
- · Replies 3 ·
Gravity due a hemispherical planet
- Yalanhar
- · Replies 2 ·
Direction of a rope with a ball inside an accelerating box
- UnPetitGarcon
- · Replies 5 ·
How Does Expansion Affect Internal Energy in a Monatomic Ideal Gas?
- Dan13
- · Replies 1 ·
Calculate the acceleration as the tractor slows down
- Jeff97
- · Replies 11 ·
Can energy be negative or can just a change in energy be negative?
- Jaccobtw
- · Replies 2 ·
Find v(x) of a mass suspended from a spring
- spsch
- · Replies 67 ·
How do pulleys work?
- markyyyyyy
- · Replies 4 ·
How to solve this sound problem (minimum sampling rate required)
- Physicsfan2379
- · Replies 3 ·
Converting finite square well differential equation to sine and cosine form
- Irishdoug
- · Replies 2 ·
Confirming eigenfunctions of the Schrödinger equation
- medofx
- · Replies 3 ·
A small mass on a wedge having a stationary circular track
- Kaushik
- · Replies 17 ·
Electron helix in a magnetic field
- Basil Fawlty
- · Replies 5 ·
Inelastic collision problem: Bullet striking a wood block
- naji0044
- · Replies 2 ·
Pressure and Volume of a Neutral Hydrogen Cloud
- Parzeevahl
- · Replies 6 ·
Fourier transformation of the Wavefunction in QM
- B4cklfip
- · Replies 5 ·
Dynamics: A wedge, a mass, and two pulleys
- A185
- · Replies 2 ·
Finding net gravitational force from two masses
- Jaccobtw
- · Replies 2 ·
Electric field due to two positive charges
- sebah
- · Replies 10 ·
By using Gauss' law, can the electric field be p/(pi*ε*r^2)
- adamaero
- · Replies 5 ·
Confusion regarding Quantum numbers
- subhradeep mahata
- · Replies 1 ·
Direction of the net force acting on a pendulum
- songoku
- · Replies 10 ·
Friction of Water Pumped Into 6in Tube from Chamber
- RipleyGallegos
- · Replies 1 ·
Elastic potential energy and natural length of a spring- relation?
- Stormzy67
- · Replies 3 ·
Why friction forces can be equal while friction coefficients differ
- Matt Raj
- · Replies 9 ·
Master and Slave Cylinder at different heights
- nmsurobert
- · Replies 6 ·
How to find the number of oscillations a block goes through
- kileigh
- · Replies 10 ·
Calculating Uncertainty: Where Am I Going Wrong?
- Taylor_1989
- · Replies 3 ·
Electrons moving in an electric field
- ooohffff
- · Replies 8 ·
Newton's Laws — Pushing a box horizontally on a surface
- adams_695
- · Replies 4 ·
Balancing forces on charged balls hanging on strings
- orbital_laser
- · Replies 1 ·
How do I calculate the fluence of a Gaussian Laser Beam?
- Kanneman5413
- · Replies 3 ·
Sum of torques, equilibrium problem
- Jaccobtw
- · Replies 3 ·
Finding acceleration of block B using Newton's second law
- adams_695
- · Replies 6 ·
Determination of the velocity of a particle in a hollow cone
- gnits
- · Replies 2 ·
Equation of motion of a mass on a 2d curve
- Jenny Physics
- · Replies 4 ·
Normal reactions at the bases of two light supports
- brotherbobby
- · Replies 3 ·
A question of kinematics involving a changing velocity vector
- Adesh
- · Replies 11 ·
Expanding a function for large E using the Taylor Expansion technique
- CricK0es
- · Replies 2 ·
Solving a system of three equations with three unknowns
- kaydis
- · Replies 7 ·
Finding the coefficient of kinetic friction - problem with a mass on a plane
- hollym123
- · Replies 1 ·
Separation of variables: Context of decelerating charged particle
- CricK0es
- · Replies 2 ·
Finding speed of sound using dimensional analysis
- kaydis
- · Replies 25 ·
Deriving linear magnification from refraction angles
- Baal Hadad
- · Replies 3 ·
Does the block move along the pink dotted lines
- Kaushik
- · Replies 57 ·
Universal Gravitation - calculating orbital period of satellite
- EEristavi
- · Replies 3 ·
Where Is the Center of Mass of a Leg?
- epuen23
- · Replies 8 ·
Free fall time in an accelerating frame of reference
- archaic
- · Replies 21 ·
Electric field on a ring's axis
- ranger281
- · Replies 10 ·
Very simple vector question (solid state)
- Phys128
- · Replies 4 ·
Velocity Question for a Car Accelerating Down a Road
- asdek
- · Replies 5 ·
Seemingly simple Physics 2 wave question (third harmonic frequency)
- novera
- · Replies 1 ·
Why is the nuclear radius cubed in the density formula?
- nmsurobert
- · Replies 2 ·
Does wavelength change when EM waves reflect at an angle?
- engnrshyckh
- · Replies 1 ·
Ratio of total refelected intensity compared to incident intensity
- Taylor_1989
- · Replies 8 ·
Finding Vector C: Magnitude and Angle Calculation
- Koko23
- · Replies 5 ·
De Broglie wavelength in terms of accelerated potential difference
- Von Neumann
- · Replies 11 ·
Calculation of minimum angular velocity of a mass on a spinning plate
- gnits
- · Replies 2 ·
Why is my displacement calculation -100m when the answer should be 273.6m?
- loku
- · Replies 27 ·
Relativistic charged particle in a constant, uniform EM field
- Giuops
- · Replies 3 ·
Particle tunneling through potential barrier with three regions
- ja07019
- · Replies 4 ·
Plotting cosine vs temperature with large angle uncertainties
- Physicist_2
- · Replies 5 ·
Deriving Lorentz Transformations for Moving Reference Frames
- B4cklfip
- · Replies 4 ·
Airtime for halfpipe skateboarder
- ec-physics
- · Replies 9 ·
What does "Fully Charged Capacitor" mean?
- Kosta1234
- · Replies 6 ·
The ratio of compression of springs from three different setups
- Kaushik
- · Replies 15 ·
Can a 10N Force Overcome Friction to Move a 10kg Block?
- Benjamin_harsh
- · Replies 2 ·
Impossible Relative Velocity Values
- Manasan3010
- · Replies 3 ·
What is the final angular velocity of each cylinder
- samm12345
- · Replies 1 ·
Determine the capacitor value so that this circuit is in resonance
- baywa2
- · Replies 3 ·
Determine the acceleration of block m1 in this wedge-pulley system
- Kaushik
- · Replies 13 ·
Spring is stretched, then attached to a mass, what is its speed at x?
- spsch
- · Replies 10 ·
Finding time-displacement and velocity-time relations with velocity-dependent forces
- AhmedHesham
- · Replies 10 ·
How does convex lens focal length affect water temperature in sunlight?
- fernelau
- · Replies 5 ·
Terminal Speed of Vessel in Vacuum and Weightlessness
- andrea1313
- · Replies 1 ·
Force on a copper loop entering into a magnetic Field B with speed v
- spsch
- · Replies 4 ·
Block sliding down incline: deriving time equation
- Benjamin_harsh
- · Replies 12 ·
Why include reaction forces in equilibrium calculations
- agusb1
- · Replies 6 ·
Particle in a magnetic field -- question
- Cyclone Charlie
- · Replies 3 ·
How to show the root mean square deviation
- arcTomato
- · Replies 2 ·
Induced EMF in copper plate oscillating in magnetic field
- Moara
- · Replies 39 ·
What is the kinetic energy of the block when it is moved 2cm.
- Shivam
- · Replies 3 ·
Is my formulae correct for time of flight in this projectile problem?
- Benjamin_harsh
- · Replies 2 ·
Why is My Relativity Light Clock Calculation Incorrect?
- PASta95
- · Replies 8 ·
Conservation of Momentum Question Involving Two-Dimensions
- omgbeandip
- · Replies 3 ·
What is the proper formula for ##Y_{max}## for this trajectory?
- Benjamin_harsh
- · Replies 9 ·
Proving the formula for a random walk
- arcTomato
- · Replies 6 ·
Vertical circular motion with accelerating centre
- subhradeep mahata
- · Replies 3 ·
Proving a random walk problem with unequal steps
- arcTomato
- · Replies 16 ·
Stationary Point - Possible Values
- BAH0003
- · Replies 1 ·